HomeMy WebLinkAbout2022-11-16 Planning Commission Special Work SessionAg enda
Planning Commission Work Session
City of E dina, Minnesota
City H all, Com m unity R oom
Wednesday, Novem ber 16, 2022
5:30 PM
I.Ca ll To Ord er
II.Roll Ca ll
III.Develop m ent Review Process
IV.Accessory Dwelling Un its
V.Adjournm en t
The City of Edina wants all residents to be comfortable being part of the public
process. If you need assistance in the way of hearing ampli$cation, an
interpreter, large-print documents or something else, please call 952-927-8861
72 hours in advance of the meeting.
Date: November 16, 2022 Agenda Item #: I I I.
To:P lanning C ommission Work S es s ion Item Type:
R eport and R ecommendation
F rom:Addis on Lewis, C ommunity Development
C oordinator Item Activity:
Subject:Development R eview P roc es s Disc ussion
C ITY O F E D IN A
4801 West 50th Street
Edina, MN 55424
www.edinamn.gov
A C TI O N R EQ U ES TED:
None
I N TR O D U C TI O N:
I nitiative #3 on the P lanning Commission's 2022 Work P lan is to "review and recommend possible changes to the
development review process including sketch plans, public feedback, and public hearings". At the work session,
C ommissioner L ori O lson will give a presentation on this topic and lead a discussion on possible
recommendations.
AT TAC HME N T S:
Description
Staff report
Pres entation
Public Hearing Current Timeline Handout
Development Review - City Comparison Table
November 16th, 2022
Chair and Commissioners of the Planning Commission
Addison Lewis, Community Development Coordinator
Development Review Process
Information / Background:
Initiative #3 on the Planning Commission’s 2022 work plan is to “review and recommend possible changes
to the development review process including sketch plans, public feedback, and public hearings”.
Commissioner Lori Olson is the lead commissioner for this initiative. City staff compiled research on the
development review process for Edina in comparison to several nearby communities, which is provided in
the attached table. Staff met with Commissioner Olson to review this information and a few things stood
out:
• The number of required public hearings for PUD approval varies from just one in St. Louis Park,
Hopkins, Eagan, and Plymouth to four in Golden Valley and Wayzata.
• Concept/sketch plan review is a required review stage for PUDs in Hopkins and Wayzata though
there are still just two review stages in those communities.
• Eden Prairie and Plymouth require just one review stage for PUDs.
• Edina is the only community to require 1,000-foot mailed notice. All other cities require 500 feet at
most, except Plymouth, which requires 750 feet.
The following were identified as preliminary recommendations for the Commission to consider:
• Consider removing the public hearing for applications that are site plan review only. Offering a
public hearing implies to the public that there is opportunity to influence the outcome. Since a site
plan review is limited to confirming whether a development complies with the code, there is very
little discretion involved.
• Consider removing one of the public hearings for PUDs, either at the Planning Commission or City
Council.
o Removal of the public hearing at the Planning Commission meeting would potentially
minimize the political influence on the Planning Commission’s recommendation and allow it
to focus its recommendation on consistency with the Comprehensive Plan and zoning
STAFF REPORT Page 2
ordinance. It would remove the burden on residents from feeling like they need to show up
to both public hearings and it would decrease the length of Planning Commission meetings.
o Removal of the public hearing at the City Council meeting would allow the City Council to
review all public hearing comments ahead of time so that it can take action on the same
night a PUD is introduced. This would decrease the length of time from application to final
approval, which is often cited as a cost by developers. It would decrease the length of City
Council meetings, which are often longer than Planning Commission meetings, and remove
the burden on residents from feeling like they need to attend both public hearings.
At the work session, Commissioner Olson will lead a discussion on the development review process and
recommended changes to be considered by the Commission.
Development Review Process
November 16th, 2022
Background
PC Work Plan
•Initiative #3: Review and recommend possible changes to the
development review process including sketch plans, public feedback,
and public hearings
EdinaMN.gov 2
What we
know about
barriers to
participation
EdinaMN.gov 3
*Source, International Association for Public Participation
People don’t
know when or
how to participate
Communication
method for notices are
not clear
Process is complicated
The decision to be
made is unclear
People are unable
to participate
Time, location and
number of public
meetings
Frustrating and
difficult for residents
to attend multiple
meetings on same
topic
People don’t trust
the process
Public hearings occur
at the end of the
process
Late meetings look and
feel less transparent
Individuals who
commented in the past
don’t feel like their
participation mattered
Opportunities to provide input
•Public Hearing (required)
•Attend public hearings
•Call in to public hearing
•Better Together website
•Leave a voicemail
•Correspondence (optional)
•On-line correspondence form
•Email city staff
•Developer (optional)
•Neighborhood meeting hosted by developer
EdinaMN.gov 4
Identify Goals
•Streamline process?
•Improve engagement?
•More predictability?
•Improve equity?
•Others?
EdinaMN.gov 5
Possible Recommendations
•Eliminate public hearings for projects that only require site plan review.
•Conduct one public hearing at either the Planning Commission or City
Council for PUDs and rezonings.
EdinaMN.gov 6
Yes No
PC
Public Hearing
CC
Public Hearing
Sketch Plan
Review PC
Preliminary PUD
PC Public Hearing
Preliminary PUD
CC Public Hearing
Final PUD
CC Review
Preapplication
Conference w/ staff
Sketch Plan
Review CC
Neighborhood
Meeting
Preliminary PUD
CC Action
Public Hearing
PC or CC Meeting
No Public Hearing
Optional Step
PC = Planning Commission
CC = City Council
Proposed
Development
Complies with underlying
zoning?
Site Plan Review PUD*Rezone to
Other Base Zoning District*
Building Permit
Building Permit PC
Public Hearing
CC
Public Hearing
Building Permit
Building Permit
*Site Plan Review occurs concurrently with any application for PUD or rezoning to other base zoning district
Existing Process
Sketch Plan
Review PC
Sketch Plan
Review CC
Yes No
PC
Recommendation
CC
Action
Sketch Plan
Review PC
Preliminary PUD
PC Recommendation
Preliminary PUD
CC Public Hearing
Final PUD
CC Review
Preapplication
Conference w/ staff
Sketch Plan
Review CC
Neighborhood
Meeting
Preliminary PUD
CC Action
Public Hearing
PC or CC Meeting
No Public Hearing
Optional Step
PC = Planning Commission
CC = City Council
Proposed
Development
Complies with underlying
zoning?
Site Plan Review PUD*Rezone to
Other Base Zoning District*
Building Permit
Building Permit
PC
Recommendation
CC
Public Hearing
Building Permit
Building Permit
*Site Plan Review occurs concurrently with any application for PUD or rezoning to other base zoning district
Remove
Public
Hearing
from PC
Alternative 1
Remove
Public
Hearings from
PC & CC
Remove
Public
Hearing
from PC
Sketch Plan
Review PC
Sketch Plan
Review CC
Yes No
PC
Recommendation
CC
Action
Sketch Plan
Review PC
Preliminary PUD
PC Public Hearing
Preliminary PUD
CC Public Hearing
Final PUD
CC Review
Preapplication
Conference w/ staff
Sketch Plan
Review CC
Neighborhood
Meeting
Preliminary PUD
CC Action
Public Hearing
PC or CC Meeting
No Public Hearing
Optional Step
PC = Planning Commission
CC = City Council
Proposed
Development
Complies with underlying
zoning?
Site Plan Review PUD*Rezone to
Other Base Zoning District*
Building Permit
Building Permit
PC
Public Hearing
CC
Action
Building Permit
Building Permit
*Site Plan Review occurs concurrently with any application for PUD or rezoning to other base zoning district
Remove
Public
Hearing
from CC
Alternative 2
Remove
Public
Hearings from
PC & CC
Remove
Public
Hearing
from CC
Sketch Plan
Review PC
Sketch Plan
Review CC
Questions for City Council
EdinaMN.gov 10
Public Hearing Workflow
Monday Tuesday Wednesday Thursday Friday Sat Sun
Key
= On-line public hearing
= Comment deadline
= In-person Public Hearing
= Comment period
closed; no more
comments included in final
record
Day 1
Public Hearing Notice Mailed
Public Comment Period
Opens
2 3
Day 4 Day 5 Day 6 Day 7
Public Comment Report
completed for Planning
Commission packet
Day 8
Planning Commission Packet
Published
9 10
Day 11 Day 12 Day 13
Planning Commission in-person
Public Hearing
Public Comment to-date
report emailed to commission
Day 14 Day 15 16 17
Day 18 Day 19 Day 20 Day 21 Day 22 23 24
Day 25
Public Comment Report
Completed for City Council
packet
Day 26 Day 27 Day 28 Day 29
City Council Meeting Packet
Published
30 31
Public Hearing Current Process Timeline
Day 32
Day 33
City Council in-person
Public Hearing
Day 34 Day 35 Day 36
37 38
Day 39
Public Hearing Closes/Public
Comment Period Closed
Public Comment Report
Completed for Meeting Packet
Day 40
Day 41 Day 42 Day 43
City Council Meeting Packet
Published
44 45
Day 46 Day 47
City Council Meeting
Final Decision
Public Hearing
Process Complete
Offer Sketch Plan Charge fee for Sketch Plan
Recommended information
to be submitted Neighborhood Meeting
PC Review /
Public Hearing
CC Review /
Public Hearing
Notice
Requirement
Allows minor
changes
administratively Lapse of Approval
Neighborhood Meeting
Required
PC Review / Public
Hearing
CC Review / Public
Hearing Notice Requirement Requires Site Plan
Allow minor changes
administratively Lapse of Approval
Pre-application
meeting with City
Staff Required
Neighborhood Meeting
Required
PC Review / Public
Hearing
CC Review /
Public Hearing
Notice
Requirement
Allow minor changes
administratively PC Review / Public Hearing CC Review / Public Hearing
Allow preliminary and final
PUD to be reviewed
simultaneously?Lapse of approval Comments
Edina Yes No Yes Encouraged, not required Yes/Yes Yes/Yes 1,000 feet Yes 2 years. May be extended by 1 year upon written
request Encouraged, not requried Yes/Yes Yes/Yes 1,000 feet Yes Yes 2 years. May be extended by 1 year upon
written request Yes Encouraged, not required Yes / Yes Yes / Yes 1,000 feet Yes No / No Yes / No Yes Following Final Site Plan approval, 2 years. May be extended by 1 year upon written request City Council does not take action on Preliminary PUD the same night of the public hearing. It is tabled and acted on at the following meeting.
St. Louis Park Yes No No No Yes/Yes Yes/No 350 feet No N/A (site plan not required)N/A (site plan not required)Encouraged, not
required Yes Yes/Yes Yes/No 350 feet Yes No / No Yes / No Yes 180 days between preliminary PUD approval and final PUD application
Minnetonka Yes No Yes No Yes/Yes No/No 400 feet Yes
Construction or initiation of the use by no later
than December 31 of the following year. May be
extended by 1 year upon written request up to 3x.
Encouraged, sometimes
required Yes/Yes Yes/No 400 feet No N/A (site plan not required)N/A (site plan not required)No Encouraged, sometimes
required Yes/Yes Yes/No 400 feet
No, requires majority vote
of the Planning
Commission
Yes/Yes Yes/No Yes
If application for final site and building plan is not made by December 31 of the year following
approval of a rezoning to PUD, or of any extension granted by the city, the Council may rezone the
property to its original zoning classification.
If construction has not started by December 31 of the year following approval of final site and building
plans, or of any extension granted by the city, the Council may rezone the property to its original
zoning classification.
Bloomington
Not noted in their city code
but possibly offered
informally
No No No Yes/Yes Yes/No 500 feet Yes 2 years if no building permit is issued. May be
extended by 1 year upon written request No Yes/Yes Yes/Yes 500 feet No N/A (site plan not required)N/A (site plan not required)Yes No Yes/Yes Yes/Yes 500 feet Yes Yes/Yes Yes/No No
If a property owner has not obtained approval of an associated final development plan within three
years after approval of the preliminary develoment plan, the Council may rescind the preliminary
development plan and repeal the Planned Development Overlay District.
Final development plans expire two years after approval if no building permit is issued for the
approved development.
Richfield Yes Yes ($350)Yes No Yes/Yes Yes/No 350 feet Yes
Construction must begin within one year unless a
different time period is approved by the Council.
The Council may approve an extension, though
the length of the extension or number of
extensions is not specified.
No Yes/Yes Yes/No 350 feet Yes Yes
Construction must begin within one year
unless a different time period is
approved by the Council. The Council
may approve an extension, though the
length of the extension or number of
extensions is not specified.
No No Yes/Yes Yes/No 350 feet Yes Yes/Yes Yes/No Yes
Construction must begin within one year unless a different time period is approved by the Council.
The Council may approve an extension, though the length of the extension or number of extensions
is not specified.
Hopkins Yes Yes ($250)Yes No Yes/Yes Yes/No 350 feet Yes
A site plan approval expires one year after it has
been granted unless the use for which the
approval had been granted is in effect. One
extension for one year can be approved by staff.
Future extensions are considered by council.
No Yes/Yes Yes/No 350 feet No N/A (site plan not required)N/A (site plan not required)Yes No Yes/Yes Yes/No 350 feet Yes Yes (Concept Plan and Final Plan)
If substantial development has not occurred within the time frame as specified in the development
agreement, the city council may instruct the Planning Commission to initiate rezoning to the original
zoning district.
Concept Plan review is a required stage of the PUD process. No public hearing is required as part of the Concept Plan stage but approval must be given to
proceed to the next step, which is Final Plan stage. Final Plan stage is similar to our Preliminary PUD stage as this is where the public hearing occurs and
where the property is officially rezoned. Final site and building plans are wrapped into this stage so it represents the last stage of the process.
Eden Prairie Yes Yes ($950 + $5/acre)Yes No Yes/No Yes/Yes 500 feet Yes Not specified No Yes/No Yes/Yes 350 feet No N/A (site plan not required)N/A (site plan not required)No No Yes/Yes Yes/Yes 500 feet Yes N/A (only one review cycle
requried)Not specified The PUD approval process is done in a single stage. Concept Plan is optional. The city code requires one round of review for PUDs and it is likely that this is
done simultaneously with site plan review.
Golden Valley
Not noted in their city code
but possibly offered
informally
No No No Yes/No No/No None Not specified Not specified No Yes/Yes Yes/Yes 500 feet No N/A (site plan not required)N/A (site plan not required)Yes Yes, 500' Yes/Yes Yes/Yes 500 feet Yes Yes/Yes Yes/Yes No Application for Final PUD must be made within 180 days of Preliminary PUD approval. Extensions of
180 days may be made by the Council. Site Plan Review is only required within the Mixed Use Zoning District.
Eagan Yes Yes ($150 + $1500 escrow)Yes No No/No No/No None Yes Not specified No Yes/Yes Yes/No 350 feet No N/A (site plan not required)N/A (site plan not required)No No Yes/Yes Yes/No 350 feet No No/No Yes/No No
Upon expiration of the specific time period approved by the city for total development of a planned
development, the subject area shall become a permanent planned development district, and the
conditions, provisions, and restritions of the final development plan shall continue to govern the use
of the land. Provided, nevertheless, that if a planned development is not completed within the
required time period, the planned development district classification shall automatically terminate as
to that portion of the district that has not been developed. The requirements and provisions of the
underlying zoning classification in its entirety shall thereafter apply to the underdeveloped area.
Site Plan Review is handled by the City Planner. The Planner may refer a Site Plan Review to Planning Commission and Council for review and comment but
it is not required. The Planner is the decision maker on Site Plan Reviews
Plymouth Yes Yes ($200 + $2,000 escrow)Yes No Yes/No Yes/No 200 feet Yes
2 years if construction has not commenced. One
extension for one year may be approved by the
Zoning Administrator. Additional extensions may
be approved by the Council.
No Yes/Yes Yes/No 750 feet Yes Yes
2 years if construction has not
commenced. One extension for one year
may be approved by the Zoning
Administrator. Additional extensions
may be approved by the Council.
No No Yes/Yes Yes/No 750 feet Yes No/No No/No N/A (only one review cycle
requried)
Final PUD approval expires one year from date of approval unless the authorized use has commenced.
One extension of one year may be approved by the Zoning Administrator. Additional extensions or
those longer than a year may be considered by the Council.
Final PUD Plan approval is done by the Zoning Administrator
Wayzata Yes Yes ($2,090 + $3640 escrow)Yes No No/No No/No N/A Yes Not specified No Yes/Yes Yes/No 500 feet Yes Yes Not specified No No Yes/Yes Yes/Yes 500 feet No Yes/Yes Yes/Yes Yes (Concept Plan and General
Plan)
General Plan must be applied for within 6 months of Concept Plan approval unless an extension is
approved by the Council.
Following Final Plan approval, if the Building Official finds that development is not proceeding in
accordance with the approved schedule, he shall immediately notify the council. Within 30 days, the
Council shall revoke the PUD and the land shall thereafter be governed by the regulations of the
district in which it is located, or shall take such steps as it deems necessary to compel compliance with
the Final Plan as approved; or shall require the land owner or applicant to seek amendment of the
Final Plan
The Concept Plan review is a requirement of all PUDs. A public hearing is required. It is treated similar to our preliminary PUD process except that the
submission requirements are still very general. Their next step is General PUD Plan which is similar to the submission requirements for our preliminary
PUD process and requires a PH before PC with CC making final approval. This is the last step in the approval of the PUD. The final plans are reviewed
administratively for compliance with the approved General PUD plan.
N/A (see comments)
Sketch Plan
NOT REQUIRED
Site Plan Review
PUD
Rezoning to Other Base Zoning District Preliminary PUD Final PUD
N/A (see comments)
Date: November 16, 2022 Agenda Item #: I V.
To:P lanning C ommission Work S es s ion Item Type:
R eport and R ecommendation
F rom:Addis on Lewis, C ommunity Development
C oordinator Item Activity:
Subject:Acc es s ory Dwelling Units Disc ussion
C ITY O F E D IN A
4801 West 50th Street
Edina, MN 55424
www.edinamn.gov
A C TI O N R EQ U ES TED:
None
I N TR O D U C TI O N:
I nitiative #4 on the P lanning Commission's 2022 Work P lan is to "Review and recommend ordinance for
Accessory Dwelling U nit". C ommissioner Q uincy Smith will give a brief presentation on this topic and lead the
C ommission in discussion regarding a possible recommendation.
AT TAC HME N T S:
Description
ADU Presentation
ADU Regulations - City Comparison Table
Accessory Dwelling Units City Adoption
Recommendation
November 16, 2022
Work Plan Team: Quincy Smith, Jimmy Bennett, Lou
Miranda
•Why ADUs?
•Project Goal and Timeline
•What is an ADU
•Points of Discussion
•Recommendation
•Appendix
•SWOT Analysis
Overview
EdinaMN.gov 2
Why ADUs
ADUs have been identified in several policy documents, including the
Comprehensive Plan, Affordable Housing Strategy Task Force Report,
and the Climate Action Plan as a potential tool to primarily address
the need for increased housing options for for Edina residents while
addressing other city and sustainability goals.
3
Work Plan Goal and Timeline
4
Goal: Review and recommend ordinance for Accessory Dwelling Unit
Deliverable: Recommendation to the City Council
Target Completion:End of 2022
Q1
Team Alignment
Planning Commission and City
Staff members assembled to
work on the work plan item.
Draft Recommendation
Development
Planning Commission work
group research and draft initial
recommendation for ADU
development in City of Edina.
Q2
Planning Commission
Review
Planning Commission review the
recommendation and provide
their feedback and additional
recommendation
11/16
City Council
Recommendation
Planning Commission work
group to present to the City
Council for their approval to
move forward on the drafting of
the ADU ordinance
TBD
What is an ADU?
Accessory dwelling units (ADUs) are independent permanent
independent housing units, typically (but not always) created on single-
family lots through remodeling or expanding the existing home or
constructed as a detached dwelling.
An ADU is not a rented out bedroom, nor a temporary structure such
as an RV or camper nor structure without a permanent foundation.
5
What is an ADU? (Con’t)
6Source: AARP Model State Act and Local Ordinances
What is an ADU? (detached)
7
Source: ZillowSource: City of Portland, OR Source: City of Oakland, CA
What is an ADU? (above garage)
8
Source: Ben Quie & Sons Source: MinnPostSource: Fernandina Observer
White Crane Construction of above garage ADU Design Blog
Source: White Crane Construction
What is an ADU? (attached)
9
Source: CTA Design Builders, Inc.Source: Streets MN
Benefits of ADUs
1.Increase supply of a more affordable housing type. ADUs are
more cost effective to build than multi-family on a per unit basis.
2.Help older homeowners, single parents, young home buyers, and
renters seeking a wider range of homes, prices, rents, and
locations.
3.Increase housing diversity and supply, providing opportunities to
reduce the segregation of people by race, ethnicity and income
that resulted from decades of exclusionary zoning.
4.Provide homeowners with extra income to meet rising costs.
10Source: AARP
Benefits of ADUs (con’t)
5.Create convenient living arrangement allowing family members to
provide care and support in a semi-independent living situation.
6.Provide opportunity for increased security, home care, and
companionship for older and other homeowners.
7.Reduce burdens on taxpayers while enhancing local property tax
base by providing cost-effective means of accommodating
development without the cost of building, operating, and
maintaining new infrastructure.
8.Promote more compact growth to reduce sprawl
9.Enhance job opportunities by providing housing nearer to
employment centers.
11Source: AARP
Points of discussion
Key topics identified by the workgroup
13
Criteria Discussion
Owner
Occupied
Some neighboring cities have the requirement of the owner be an occupier of either the primary dwelling or the ADU to
alleviate any concerns around poor property maintenance.
Sewer
capacity
There is sewer capacity concern in the southwest region of the city. As a result, Engineering staff have concerns about growth
in this area until sewer capacity is increased. See “Fig A -Sewer Capacity” slide.
Max Allowed One ADU per single family residence would be in line with the max allowed with neighboring cities.
ADU Type Allowing all ADU types (attached, detached, internal) would provide options to residents and can increase the potential for
more ADU construction in the city. Internal and attached ADUs are least costly whereas detached ADUs would be most
expensive.
Size This size of the ADUs in neighboring cities is between 300-1000 sq. ft. It would be wise for Edina to establish a minimum ADU
size standard that would ensure comfortable living space.
Affordability While ADUs are not commonly income restricted, and thus would not count towards Edina's affordable housing goal,
they are intended to provide a new housing option that is relatively more affordable than a single -family home.
Points of discussion
Points of discussion con’t
14
Criteria Reason
Permitting by
Right
Many cities allow ADUs by right while others may require a CUP (Conditional Use Permit) or other means. As a city we need
to consider the pros / cons of either approach and determine the best path forward. Architecture, Lawsuits, Historical
Preservation Rules etc.
Parking Parking requirements are considered a barrier to ADU development; however, the City does not allow on street parking
for more than six hours or between the hours of 1am -6am Nov. 1 to Mar. 31. If the City moves forward with an
ordinance, it would need to be decided if additional parking should be required that would meet current setback,
hardcover or other city ordinances requirements.
WAC and
SAC
For internal and attached units, water and sewer are typically provided from existing service lines for the primary
dwelling. For detached units, existing service lines may be extended from the primary dwelling or separate services
may be provided.
Sale and
Subdivisions
While allowed by some cities around the country, most ordinances prohibit the sale of an ADU separate from the
primary dwelling.
Building
Code
All ADUs would be required to comply with Minnesota State Building Code. Internal and attached ADUs would need to
meet a 1-hour fire separation rating for walls between units.
15
The southwest half of Edina has sewer
capacity concerns that would
adversely impact services with any
additional increase in flow volume.
Potential impacted neighborhoods are:
Fig: A -Sewer Capacity
Presidents
Parkwood Knolls
Bresden
Countryside
Indian Hills
Indian Trails
Normandale Park
Creek Valley
Braemar Hills
The Heights
Prospect Knolls
Dewey Hill
Cahill
Lake Edina
Pentagon Park
Recommendation to City Council
In summary, construction costs appear to be the biggest barrier to ADU development. As a
neighboring city, Edina may also experience moderate development demand with the
issuance of a new ADU ordinance. As an incentive, the city may want to consider
incorporating various expense reduction policies as outlined above to increase demand.
The planning commission also recognizes the complex code challenges that would need to
be addressed within the ordinance to ensure safety while meeting appropriate utility service
levels. Communicating the value of ADUs as both an income generator for residents and a
vehicle to address an ongoing housing affordability shortage would be necessary. Guided by
our Comprehensive, Climate and Housing Plans and through a deliberate, moderate and
collaborative approach, an ordinance can be developed that would satisfy residents,
developers and the city.The Planning Commission recommends moving forward with the
development of an ADU ordinance as the net benefits and opportunities to be gained
would outweigh any potential drawbacks.
16
Appendix
SWOT Analysis Framework
18
Strength
●What are the benefits of ADUs?
●Strengths need to be maintained, built
upon or leveraged.
Weakness
●What are the limitations of ADUs?
●Weaknesses need to be remedied or
stopped.
Opportunities
●How can we apply these strengths for
maximum benefit?
●Opportunities need to be prioritized and
optimized.
Threats
●What can impede or derail the
development of ADUs?
●Threats need to be countered or
minimized.
SWOT is an acronym for Strengths, Weaknesses, Opportunities, and Threats and is a simple but
powerful structured planning tool to evaluate a set of competing forces when making a decision.
SWOT Analysis
19
Strength
●Increase affordable housing supply
●Provides homeowners with extra income
●Allows the provision of supportive care
●Provides alternative housing option
●Increases the city property tax base
●Aligns with Comprehensive, Climate
Action, and Housing Strategy Plans
Weakness
●Construction costs
●City infrastructure limitations
●Not feasible for all dwellings
●Impacts many current city code
●Administrative learning curve
●Community not familiar with ADUs
Opportunities
●Regional ADU development leadership
●City tax revenue increase
●Increases collaboration amongst city
departments and commissions
Threats
●City aesthetic character change
●Residential congestion (traffic, density)
●Susceptible to legislative changes
Strength mitigation
20
Strength Enhancement
Increase affordable housing supply Promote through public forums the benefits of ADU development.
Provides homeowners with extra income Provide resources to make it easier for homeowners to generate
additional rental income from their ADU homes.
Allows the provision of supportive care Partner with local care facilities to provide support for ADU residents in
need of supportive care. I.e home care nurses.
Provides alternative housing option Coordinate with other neighboring cities to align on their ADU ordinances
to attract residents needing this alternative housing option.
Increases the city property tax base Fairly assess dwellings with ADUs for property tax assessments.
Aligns with Comprehensive, Climate
Action, and Housing Strategy Plans
Promote ADU development as supportive of other city strategies including
the comprehensive plan, climate action plan and housing plans.
Weakness mitigation
21
Weakness Mitigation
Planning, Construction
and City costs / fees
Waive some or all permitting fees.
Provide free architectural plans and consultative services to interested
builders.
Leverage state / city funds or grants to promote the development of
ADUs.
City infrastructure
limitations
There may be concerns with the sewer capacity in south west half of the
city (see Fig A). This can be mitigated with city investments in newer
sewer line capacity. There is little concerns with other city infrastructure
services such as water line capacity, or electricity.
Not feasible for all
dwellings
Although rare, the topography and size of some lots may prohibit building
an ADU (attached or detached).
Weakness mitigation con’t
22
Weakness Mitigation
Impacts many current city
codes
Leverage the existing building codes and those used for sheds and other
property structures to model the ADU setback and height requirements.
Delayed permitting
timelines
Develop standard ADU plans that could speed up the permitting and
approval process.
Administrative learning
curve
This program is new for the city however they can leverage existing
processes for permitting ADU development.
Community not familiar
with ADUs
Schedule community communication events via multiple channels
including public meetings, city sites, social media, city mailings and/or
newspapers to share vision, future ordinance and plan for ADU
development. Develop an ADU handbook and website so residents can
review for more construction information.
Opportunity
23
Opportunity Enhancement
Regional ADU
development leadership
Edina’s unique demographics can position the city to lead on the
architectural design, build process and ongoing administration of ADUs.
City tax revenue increase ADU development can increase the tax assessed values of homes and
increase city tax revenue.
Increases collaboration
amongst city departments
and commissions
This new housing type option creates opportunity to collaborate more
closely with many city departments.
Threats
24
Threats Mitigation
City aesthetic
character change
As part of the building code ensure setback requirements, building materials,
height and other ordinances are maintained for ADU development.
Residential
congestion (traffic,
density)
Monitor and report the traffic changes due to ADU development.
Establish a traffic density alert that would initiate a review of ADU density in the
city.
Proactively collect and respond feedback from residents on the impact of the ADU
development to their neighborhoods
Adverse legislative
changes
Monitor and advocate for ADU development for the city and at state level.
Share ADU ordinances with other Commissions and civic groups such as Edina for
Affordable Housing for awareness, exposure and notification of impacts.
Partner with other neighboring cities to advocate for ADU development
Neighboring City ADU Comparisons
25
Criteria St. Louis Park Minneapolis Richfield Bloomington Minnetonka
Zoning / Max
Allowed
R-1, R-2, R-3. Single
family lots / 1
Single family and 2 family
zones / 1
R-1 / 1 R-1, RS-1 / 1 R-1, R-1A, R-2 / 1
No. / Issue 0 since Oct 2020 137 May 2015 -2019 < 5 since 2015 1 since 2009 61 since 1986
Detached Attached, Detached,
Internal
Attached, Detached,
Internal
Must be attached to
principal structure or
above a detached garage
Yes (newly proposed
ordinance)
Attached, Detached,
Internal
Min / Max
Size
200 sq. ft. / Attached
units: <= 40% gross floor
area of the single family
home Detached: 800 sq.
ft. or 25% of rear yard,
whichever is less
300 sq. ft. / 1300 sq. ft.
or 16% of lot size area
300 sq. ft. / 800 sq. ft.300 sq. ft. / No max None / 1,000 sq. ft. or
35% of the floor area of
the principal dwelling,
whichever is less.
Height 15 ft.21 ft.Height of principal
residence (or 18 ft if lot
is less than 75 ft wide)
Same as principal
structure
Up to the roof height of
the principal dwelling.
Neighboring City ADU Comparisons con’t
26
Criteria St. Louis Park Minneapolis Richfield Bloomington Minnetonka
Setbacks Rear: 15 ft.
Interior side: 5 ft.
Interior side: 3 ft. Rear: 3
ft.
Same as principal
structure if attached.
Same as detached garage
if above garage
Same as principal
structure
Rear and side: ADU
height but not less than
15'
Parking No additional parking
required.
Minneapolis has no parking
minimums
A minimum of three off-
street spaces on the
property
No additional parking
requirement for ADUs;
however, no more than 4
vehicles may be parked
outside at any single or two
family dwelling unit.
No number of spaces
specified but no more than
four vehicles may be parked
outside on the property.
Ownership Property must be occupied
by the owner as their
primary residence. The ADU
may not be sold
independently of the
principal dwelling or be
made into a separate tax
parcel.
Shall not create a separate
tax parcel ID. Does not
require the owner to reside
at the property. Both the
ADU and the principal
dwelling can be rented out.
A separate tax parcel may
not be created. An owner
of the property must live on
the lot. Proof of
homesteading is required.
May not be subdivided or
separated in ownership
from the associated single
family home. Owner must
reside at the property.
The owner of the property
must reside at the principal
structure or ADU as a
primary residence at least
185 days per year. ADUs
may not be subdivided or
otherwise separated in
ownership from the
principal dwelling unit.
Neighboring City Demographics
27
Criteria Edina St. LP Minneapolis Richfield Bloomington Minnetonka
Population 53,494 50,010 429,954 36,994 89,987 53,781
Households 22,269 23,774 178,886 15,322 35,064 23,293
Households with one or more
people 65 years and over
36.9%24.4%17.4%28.3%33.4%35.5%
Disability 9%10%10.9%13.8%12.4%9.2%
Median income $ 108,576 $ 84,694 $ 66,068 $ 70,091 $ 78,224 $ 100,363
Income below poverty 4.7%5.9%18.3%7.8%7.5%3.5%
Median rent $ 1,442 $ 1,267 $ 1,078 $ 1,150 $ 1,220 $ 1,467
Cost burdened households 29.3%25.0%33.2%28.1%26.6%26.3%
Source: MNCompass
ADU Build Cost Factors & Est.
28
Planning Costs City Costs Construction Costs Finishing Costs
❖Architectural
drawings
❖Engineer calculations
❖Energy calculations
❖Land surveys
❖Plan check
❖Utility connection
fees
❖Building permit
❖Design and plans
❖Structure type
❖Size
❖Conditions of
property
❖Conditions of the
existing structure
❖Distance and location
of utility connections
❖Cost of materials
❖Flooring
❖Doors
❖Windows
❖Cabinetry
❖Tile
❖Stone
Est. $6,000 –$14,000 Est. $3,000 –$11,000 Est. $229 –$376 / Sq. ft Est. $50 –$75/Sq. ft.
❖500 Sq. ft can cost between $123,500 -$213,000
❖1200 Sq. ft can cost between $283,800 -$476,200
Resources / Links
1.AARP Model State Act and Local Ordinances
2.The ABCs of ADUs (AARP)
3.Home + home: Twin Cities ADU Guidebook -Family Housing Fund
4.MNCompass
5.Maxfield Housing Study
6.ADU Matrix
7.Various neighboring city ADU ordinances
29
Allow ADUs Allow by right Zones Parking Allow detached Max ADUs allowed Min Size Max Size Max Height Setbacks Ownership
Owner must reside
at property? Max Bedrooms Allowed to be rented? Max Occupancy Appearance Utilities ADU Definition Other Comments
Bloomington Yes Yes R-1, RS-1
No additional parking requirement for ADUs; however, no
more than 4 vehicles may be parked outside at any single or
two family dwelling unit.
Yes 1 300 sq. ft. 960 sq. ft. May not exceed height
of principal structure. Same as principal structure
May not be subdivided or separated in ownership
from the associated single family home. Owner must
reside at the property.
Yes 2 Yes (a rental license is required)Not specified
Must be designed to maintain the outward appearance of one
single-family dwelling; the appearance of a two family dwelling
must be avoided.
A secondary dwelling unit, but not a manufactured home built on a permanent chassis,
located on the same lot as a single-family dwelling unit, either physically attached to, within,
or detached from the single-family dwelling unit.
Crystal Yes Yes R-1, R-2 One space in addition to the two required spaces for the
home Yes 1 None 50% of the finished floor area of the
home 22 ft.
Rear: 5 ft.
Side: 5 ft.
Corner side: 10 ft.
The ADU may not have a separate PID with the
county. Both the ADU and principal dwelling can be
rented out.
No Not specified Yes (a rental license is required) Not specified Compatible with the exterior materials of the home. Must be
constructed on a frost protected foundation.
Must connect to the utility main or to the existing water and
sewer connections at a point on the private property.
A dwelling unit that is located on the same lot as a one family dwelling to which it is accessory
to and subordinate in size. An accessory dwelling unit may be within or attached to the one
family dwelling, or in a detached accessory building on the same lot.
Must be at least ten feet from principal structure if detached
Eden Prairie No
Golden Valley Yes Yes R-1, R-2 One additional off-street parking space for the ADU is
required.Yes 1 250 sq. ft.
35% of the home's gross floor living
area or 950 square feet, whichever
is less. In the case of internal ADUs,
the area being converted shall be
included in this calculation of gross
living area.
12 ft. for detached Rear: 10 ft.
Side: 10 ft.
The ADU shall not be sold independently of the
principal residential dwelling and may not be a
separate tax parcel.
Yes Not specified Yes (a rental license is required) Not specified
For attached & internal: 1. Exterior changes to the home shall not
substantially alter the single-family character of the structure. 2.
Entrance to the ADU shall face either the side or rear yard.
For detached: 1. Shall be designed and use materials which
complement and match the existing principal dwelling. 2. Rooftop
decks are not permitted in conjunction with a detached ADU. 3.
Windowed dormers shall not face towards adjacent properties to
the side or rear.
Utility connections for the ADU shall be provided from the
existing principal structure so long as adequate capacity exists
or can be provided.
A smaller, independent residential dwelling unit located on the same lot as a stand-alone
single family home.
A CUP is required for a detached ADU if the ADU does not meet
the same setbacks as required for the principal dwelling.
Detached ADUs shall be located completely to the rear of the
principal structure, unless it is built with frost footings. In that
case, an ADU may be built no closer to the front setback than
the principal structure.
A minimum lot size of 10,000 sq. ft. is required to establish a
detached ADU.
Detached ADUs must be located at least 10 feet from the
principal structure.
The floor area of a detached ADU shall not count towards the
maximum area limitation for accessory structures in the R-1 or
R-2 zoning districts.
Hopkins No
Minneapolis Yes Yes Allowed on single and
two family properties Minneapolis has no parking minimums Yes 1 300 sq. ft.
Internal/attached: 800 sq. ft.
Detached: 1,300 sq. ft. or 16% of lot
area, whichever is greater.
21 ft. Interior side: 3 ft.
Rear: 3 ft.
Shall not create a separate tax parcel ID. Does not
require the owner to reside at the property. Both the
ADU and the principal dwelling can be rented out.
No Not specified Yes (a rental license is required) Not specified
The primary exterior materials shall be durable, including, but not
limited to masonry, brick, stone, wood, cement-based siding, or
glass. Not less than 5% of the total area of the facade of a
detached unit facining an alley or public street shall be windows.
Exterior stairways are allowed provided that the finish of the
railing matches the finish or trim of the detached accessory
dwelling unit. Raw or unfinished lumber shall not be permitted on
an exterior stairway. Balconies and decks shall not face an interior
side yard. Rooftop decks not allowed. No additional entrances
facing the public street.
Water and sewer are typically served through extensions from
the primary residence. Dedicated water and/or sewer services
to a detached ADU may be allowed in special circumstances.
A dwelling unit that is located on the same lot as a principal residential structure to which it is
accessory, and that is subordinate in area to the principal dwelling.
Must be at least twenty feet from the principal sturcture if
detached
Minnetonka Yes No, CUP is required R-1, R-1A, R-2 No number of spaces specified but no more than four vehicles
may be parked outside on the property. Yes 1 None
1,000 sq. ft. or 35% of the floor
area of the principal dwelling,
whichever is less.
The highest point may
not extend above the
highest point of the roof
of the principal dwelling.
Rear and side: ADU height but
not less than 15'
The owner of the property must reside at the principal
structure or ADU as a primary residence at least 185
days per year. ADUs may not be subdivided or
otherwise separated in ownership from the principal
dwelling unit.
Yes 2 Yes (the city of Minnetonka does not require
rental properties to be licensed)Not specified
Must be designed to maintain the single-family appearance of the
principal dwelling from off-site views. Must be located behind the
rear building line of the principal dwelling unit. Must be
constructed on permanent foundation with no wheels.
Must be served by municipal water, municipal sewer, and gas
and electric utilities via service lines shared with the principal
dwelling.
A secondary dwelling unit located on the same property as a principal dwelling unit, which
includes provisions for living independent of the principal dwelling, such as areas for sleeping,
cooking, and sanitation, as determined by the city planner. This definition includes secondary
dwelling units attached to or detached from the principal dwelling unit.
Richfield Yes Yes R-1 A minimum of three off-street spaces on the property Must be attached to principal
structure or above a detached garage 1 300 sq. ft.800 sq. ft.
Height of principal
residence (or 18 ft if lot
is less than 75 ft wide)
Same as principal structure if
attached. Same as detached
garage if above garage
A separate tax parcel may not be created. An owner
of the property must live on the lot. Proof of
homesteading is required.
Yes Not specified Yes (a rental license is required) Not specified
Exterior materials must match the structure to which the ADU is
attached. No additional entrances facing the public street may be
added. No exterior stairways constructed of raw or unfinished
lumber.
A dwelling unit that is located on the same lot as a principal residential structure to which it is
accessory, and that is subordinate in area to the principal dwelling.The lot must meet current width and depth requirements
St. Louis Park Yes Yes
R-1, R-2, R-3. ADUs
allowed only on single
family lots
No additional parking required.Yes 1 200 sq. ft.
Attached units: not more than 40%
gross floor area of the single family
home
Detached: 800 sq. ft. or 25% of rear
yard, whichever is less
15 ft.
Rear: 15 ft. (5 ft if adjacent to
alley)
Interior side: 5 ft.
Property must be occupied by the owner as their
primary residence. The ADU may not be sold
independently of the principal dwelling or be made
into a separate tax parcel.
Yes Not specified Yes (a rental license is required) 2
Shall be compatible in design and materials to the principal
building. Must be located in rear or side yard. Decks and balconies
above the ground floor shall not face an interior side yard or rear
yard not abutting an alley. Rooftop decks are not allowed.
Not defined
St. Paul Yes Yes RL-RM2 No additional parking required Yes 1 None 75% floor area of the primary
dwelling
25 ft. or the height of
the principal structure,
whichever is less
Interior side: 3 ft.
Rear: 3 ft.
The ADU shall not be sold separately from the
principal dwelling and may not create a separate tax
parcel. Both the ADU and the principal dwelling can
be rented out.
No Not specified Yes (rental properties must be registered)
No more than one household is
allowed in both the principal unit
and the accessory unit together. A
household is six (6) or fewer
adults, together with the minors in
their care. (For example, if four
adults occupy the principal
dwelling unit, only two adults may
occupy the ADU.)
Exterior stairs are not allowed on the front of the building.
Exterior stairways shall be built of durable materials that match
the finish of the structure to which they are attached. Raw or
unfinished lumber shall not be permitted.
Not defined
Boulder, CO Yes Yes RR, RE, RL, RMX, A, P One additional space is required for an ADU. An additional
space is not required for affordable units. Yes 1 None
Attached units: 1/3 floor area (1/2
for affordable units) of primary
dwelling or 1,000 sq. ft., whichever
is less.
Detached: 550 sq. ft. (800 sq. ft. for
affordable units)
20 ft. (up to 25 ft. if roof
pitch greater than 8:12)
Same as for other accessory
structures. Depends on zoning
district.
No person shall convey an accessory unit
independently of the principal dwelling unit on the lot
or parcel. The property owner must reside in the
principal dwelling or ADU
Yes Not specified Yes (a rental license is required)
One family plus two additional
persons can reside between the
primary dwelling and ADU
Must be architecturally consistent with existing residence and
neighboring properties. Additional entrances facing the street
must be screened.
A separate and complete single housekeeping unit within a detached dwelling unit or within
an accessory structure to the principal dwelling unit of the lot or parcel upon which the unit is
located, permitted under the provisions of Subsection 9-6-4(a).
In some zoning districts, the number of ADUs is restricted to a
percentage (e.g. 20%) of the properties within a distance (e.g.
300 ft.)
ADUs require at least 60 sq. ft. of private open space exlusively
for the use of the ADU occupants.
The incentives for no parking required and additional size of
the ADU are offered if the ADU rents at 75% AMI or lower.
Somerville, MA Yes
No, requires site plan review,
which includes two neighborhood
meetings, a meeting before the
Urban Design Commission, and a
public hearing before the Zoning
Board of Appeals
NR 1 space per dwelling unit. No parking required if within a
transit area. Yes 1 None 576 sq. ft. 12 ft. Rear: 3 ft.
Interior side: 3 ft.
"Backyard Cottages" are defined as being on the same
lot as a principal building type so a separate parcel
cannot be created. Ordinance does not prohibit sale
of the the Backyard Cottage separate from the
primary dwelling. Both the Backyard Cottage and the
principal dwelling can be rented out.
No Not specified Yes (no rental license required)Not specified The ADU can have its own utility hookups or be serviced
through the primary dwelling.
Backyard Cottage: A small floor plate, detached, accessory building type typically providing
space for one (1) small dwelling unit, a home occupation, a playhouse for children, or vehicular
parking on the same lot as a principal building type.
A three foot wide paved walkway capable of allowing an
ambulance cot to be wheeled to and from the Backyard
Cottage is required.
Utility services for the Backyard Cottage must be buried
underground
If occupied for residential use, must have an automatic
sprinkler system unless on a corner lot, a lot with a driveway
leading to the Backyard Cottage, or a lot autting an alley.
Seattle, WA Yes Yes
SF5000, SF7200,
SF9600, RSL, and
Lowrise
No additional parking is required for an ADU.Yes 2 but no more than 1
can be detached None
1,000 sq. ft. excluding garage areas,
storage areas accessed from the
exterior, porches and covered decks
less than 25 sq. ft., and gross floor
area below grade. Up to 35 sq. ft.
can be exempt if designed for
bicycle parking.
For lots at least 50 feet
wide: 25 ft. for pitched
roof. 22 ft. for
shed/butterfly roof.
Less for lots less than 50
ft. wide
Rear: 5 ft.
Side: 5 ft.
The ADU may not be conveyed separately from the
primary dwelling. Both the ADU and primary dwelling
can be rented. Owner not required to reside on site.
No Not specified Yes (a rental license is required)
For lots with 1 ADU: no more than
8 unrelated people.
For lots with 2 ADUs: no more than
12 unrelated people.
If the entrance is located on a façade facing a side lot line or rear
lot line, the entrance may not be within 10 feet of that lot line
unless that lot line abutss an alley or other public right-of-way.
One or more rooms that:
a. are located within a principal dwelling unit or within an accessory structure on the same lot
as a principal dwelling unit;
b. meet the standards of Section 23.44.041, Section 23.45.545, or Chapter 23.47A, as
applicable;
c. are designed, arranged, and intended to be occupied by not more than one household as
living accomodations independent from any other household; and
d. are so occupied or vacant.
A second ADU is allowed if the unit either meets a green
building standard or meets affordability criteria (80%AMI for at
least 50 years).
Pasedena, CA Yes Yes RS (2), RM-12, REM-
16, RM-32, RM-48
One additional space is required for an ADU. The requirement
is waived if within 1/2 mile of a transit stop Yes 1 150 sq. ft.
For detached: 1,000 sq. ft. for
parcels under 10,000 sq. ft.;1,200
sq. ft. for parcels 10,000 sq. ft. or
more
For attached: 800 sq. ft. or 50% of
the floor area of primary dwelling,
whicever is greater.
12 ft to top plate and 17
ft to highest ridgeline
Side: 4 ft if ADU is 800 sq. ft. or
less; 5-10 ft. if over 800 sq. ft.
and depends on lot width
Rear 4 ft if ADU is 800 sq. ft. or
less; 10 ft. if over 800 sq. ft.
A separate parcel cannot be created and the ADU may
not be conveyed independently of the primary
dwelling. Both the ADU and primary dwelling can be
rented. Owner not required to reside on site, unless it
is a junior ADU.
No, unless junior
ADU Not specified Yes (no rental license required)Not specified
An ADU 750 sq. ft. or greater shall be charged a Residential
Impact Fee in an amount proportional to the square footage of
the primary dwelling. The impact fee may be reduced if
affordability criteria are met.
A residential dwelling unit that provides complete independent living facilities for one or more
persons on the same parcel as a proposed or existing legal single family residence. An
accessory dwelling unit shall include permanent provisions that include, but are not liminted
to, living, sleeping, eating, cooking, and sanitation.
The city offers an incentive (Second Unit ADU Program) to
create affordable ADUs by offering comprehenisve assistance
for financing, designing, permitting, and constructing a new
ADU. The unit must be rent to a Section 8 voucher holder for 7
continuous years
Any "mature tree" as defined by Section 8.52.020 in a
protected zone shall be replaced at a one-for-one ratio it is
proposed to be removed to construct a new ADU.
Burlington, VT Yes Yes All single family lots No additional parking required.Yes 1 None
900 sq. ft. or 30% of gross floor
area of primary dwelling, whichever
is greater.
35 ft.
Side: 5 ft. if under 15 ft. in
height. Otherwise 10% of lot
width or average of 2 adjecent
lots on either side.
Rear: 5 ft. if under 15 ft. in
height. Otherwise 25% of lot
depth, no less than 20 feet.
The owner must live on the property and may occupy
either the principal or accessory dwelling unit. Yes 1 bedroom Yes (a rental license is required)2 adults and their minor children The property must have sufficient wastewater capacity as
certified by the Department of Public Works.
A dwelling unit that is clearly subordinate to a single-family dwelling, and has facilities and
provisions for independent living, including sleeping, food preparation, and sanitation.
If impervious surface limits are a barrier, a property owner can
exceed the limit to build a maximum 650 sq. ft. ADU as long as
stormwater management is addressed. This is intended to
relieve the barrier faced by smaller lots that are already legally
at or over their lot coverage limit. Requires approval by
Development Review Board (See Section 5.2.3 (b) 10. of Zoning
Ordinance)
Requires a deed restriction be recorded prior to occupancy
referencing the conditions of the ADU permit, including that
the owner reside on the property.
Highland Park, IL No
Evanston, IL Yes Yes R1, R2, R3, R4, R5, R6 No additional parking is required for an ADU.Yes 1 None 1,000 and not larger than the
primary dwelling
28 ft for sloped roofs
and 20 feet for flat and
mansard roofs
Side: 5 ft.
Rear: 3 ft
Owner does not need to live on the property. Both the
ADU and primary dwelling can be rented. No Not specified Yes (a rental license is required)No more than 1 family
There can only be one entrance on the front facing side of the
property and there must be a separate entrance for the ADU. Any
exterior stairs to an attached unit must be on the rear side of the
property.
Water service/sewer must be connected to the main residence
and cannot be connected to the street. An upgrade may be
required if the main residence does not have sufficient
capacity for the new ADU.
A smaller, secondary independent housekeeping establishement located on the same zoning
lot as a residential building. ADUs are independently habitable and provide the basic
requirements of shelter, heating, cooking, and sanitation, and may be internal, attached or
detatched.
Portland, OR Yes Yes
Almost all zones,
when accessory to a
detached single family
dwelling, an attached
house, or
manufactured home.
ADUs may also be
allowed with duplexes
No additional parking is required for an ADU.Yes 2 (only 1 on a lot with
a duplex)None
75% of living area of primary
structure or 800 sq. ft., whichever is
less.
20 feet if principal
structure setbacks are
met. 15 feet if principal
structure setbacks not
met.
Side & Rear: 0 ft. if certain
criteria met, including overall
structure height less than 15 ft
and walls of the structure less
than 10 ft high. Otherwise,
principal structure setbacks
apply
Owner does not need to live on the property. Both the
ADU and primary dwelling can be rented. No Not specified Yes (a rental license is required)Not specified
Additional design standards required if ADU is over 15 ft in height:
Exterior finish materials, roof pitch, trim, eaves, window
orientation, and dimension must be the same or visually match
those of the primary dwelling in type, size and placement.
Applicants have the option of connecting the ADU to existing
sewer/water connections through the primary structure or
having a separate connection.
An additional dwelling unit created on a lot with a primary dwelling unit. The additional unit is
smaller than the primary dwelling unit except when the accessory dwelling unit is in an
existing basement. The accessory dwelling unit includes its own independent living facilities
including provision for sleeping, cooking, and sanitation, and is designed for residential
occupancy by one or more people, independent of the primary dwelling unit. Kitchen facilities
for cooking in the unit are described in Section 29.30.160 of Title 29, Property and
Maintenance Regulations. The unit may have a separate exterior entrance or an entrance to
an internal common area accessible to the outside.
When more than one ADU is proposed, at least one unit must
meet certain "visitability" standards for entrances, bathrooms,
living areas, and doors. This is to ensure that units can
accommodate a range of individuals living in or visiting the
residence regardless of age or ability.
Portland, ME Yes Yes All lots with
residential uses No additional parking is required for an ADU.Yes 2 None 2/3 the gross floor area of the
primary dwelling
18 ft. (Shall not exceed
the height of the
primary structure)
Rear: 5-25 ft (varies by district
and size of structure)
Side: 5-16 ft (varies by district
and height of structure)
A deed restriction must be recorded that the ADU
must remain in common ownership with the primary
dwelling.
Yes, but only at the
time of the ADUs
construction
Not specified Yes (a rental license is required)Not specified
When and ADU is significantly visible from public ways, the
building design shall a.) be cearly subordinate to the principal
structure(s) in scale and position in relationship with the street
and principal structure(s); b.) Not include outside stairways or fire
escapes above the ground floor.
A dwelling unit subordinate in size to the principal residential structure(s) on a lot and located
either within the principal residential structure(s) or in an accessory structure.
Redmond, WA Yes Yes All single family lots One off-street parking space is required for an ADU. No
parking required if within 1/3 mile of transit stop.Yes 1 None
For detached: 40% of the total
square footage of the primary
dwelling and the accessory dwelling
unit combined, excluding any
garage area, and in no case shall it
exceed 1,000 sq. ft.
Attached: 1,500 sq. ft.
25 ft Side: 5 ft
Rear: 10 ft
An ADU shall not be subdivided or otherwise
segregated in ownership from the primary dwelling
unit. Either the primary dwelling or ADU must be
occupied by an owner of the property.
Yes Not specified Yes (rentals of four units or less do not require a
rental license). Not specified
Only one entrance on the front of the primary dwelling is
permitted (some exceptions allowed). Additional entrances are
permitted on the side and rear of the primary structure. Additions
to an existing structure or the development of a newly
constructed detached ADU shall be designed consistent with the
existing facade, roof pitch, siding, and windows of the primary
dwelling unit.
A habitable living unit that provides basic requirements for living, sleeping, eating, cooking,
and sanitation. An ADU is accessory to the primary unit on a lot and may be added to, created
within, or detached from the primary single-family dwelling unit.
Lake Forest, IL
No, only ADUs existing prior to
November 17, 2014 may continue
to be used.
Chapel Hill, NC Yes Yes Single family lots 1 per ADU bedroom Yes 1 None 750 sq ft or 75% of floor area of
primary dwelling, whichever is less.29 ft Varies by district (generally 6-11
ft for rear and side)
Must remain under same ownership as primary
dwelling. No Not specified Yes (no rental license required)Not specified
Dwelling units, single family with accessory apartment: A dwelling or combination of dwellings
on a single zoning lot consisting of two (2) dwelling units, for which:
1. Accessory (attached or not attached) apartments have a floor area limit of no more than
seven hundred fifty (750) square feet or seventy-five (75) percent of the floor area of the
principal dwelling unit (whichever is smaller), except as provided in the next sentence.
2. The floor area of an attached accessory apartment may exceed the afrementioned floor
area limit of seven hundred fifty (750) square feet and be up to one thousand (1,000) square
feet of floor area only if both of the following conditions are met: a). an attached accessory
apartment does not increase the existing footprint of the structure (principal dwelling unit,
garage or other exisitng, standalone structure on the property) to which it would be attached;
and b) the attached accessory apartment does not exceed seventy-five (75) percent of the
floor area of the principal dwelling unit.
3. Together, the principal dwelling unit and the accessory apartment that are part of a two-
family dwelling shall be classified as a rooming house (a different use type and group) if
occupied by more than four (4) personons who are not related by blood, adoption, marriage,
or domestic partnership.