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Minneapolis’ Accessory Dwelling Unit Ordinance
Aaron Hanauer Thursday, February 25, 2016
www.smartgrowthamerica.org
granny flatmother-in-law suite
basement apartment
ancillary unit
ADU / accessory dwelling unit
secondary suite
carriage house
backyard cottage
laneway house
alley flat
Why should Minneapolis allow ADUs?
• Accommodate multigenerational living.• Provide a means for residents to remain in their
homes and neighborhoods.• Respond to increase in number of 1 & 2 person
households.• Accommodate growth with minimal impacts
neighborhood character.
0 0.5 10.25Miles
Citywide Zoning
City of Minneapolis
Created on: Month 00, 2015
Community Planning and Economic Development
Data compiled from bestavailable sources. The City ofMinneapolis assumes nolegal responsibility for theaccuracy of this map. Forillustrative purposes only.
/
Legend
Zoning Districts
R1
R1A
R2
R2B
R3
R4
R5
R6
OR1
OR2
OR3
C1
C2
C3A
C3S
C4
B4N
B4-1
B4-2
B4C-1
B4C-2
B4S-1
B4S-2
I1
I2
I3
67%
5-10 min walk to activity centers, nodes, and parks
best practices research, internal meetings -------> ------->analysis of issues continually updated ordinance draft based on feedback
OCTOBER - DECEMBERJULY - SEPTEMBERAPRIL - JUNEJANUARY - MARCH
Ordinance introduction by Council Member Bender
4 open houses, survey administered
draft published / 5
th open house
City Planning Commission
Zoning & Planning Committee
City Council adoption
One-year process: 2014
best practices research, internal meetings -------> ------->analysis of issues continually updated ordinance draft based on feedback
OCTOBER - DECEMBERJULY - SEPTEMBERAPRIL - JUNEJANUARY - MARCH
Ordinance introduction by Council Member Bender
4 open houses, survey administered
draft published / 5
th open house
City Planning Commission
Zoning & Planning Committee
City Council adoption
Best practices research• Focused on cities with longstanding ADU
ordinances, such as Vancouver (BC), Portland,Seattle, Santa Cruz.
• Common themes: - one ADU/lot, homeowner lives on site, parking not required for ADU, exterior design regulation, floor area limits.
best practices research, internal meetings -------> ------->analysis of issues continually updated ordinance draft based on feedback
OCTOBER - DECEMBERJULY - SEPTEMBERAPRIL - JUNEJANUARY - MARCH
Ordinance introduction by Council Member Bender
4 open houses, survey administered
draft published / 5
th open house
City Planning Commission
Zoning & Planning Committee
City Council adoption
Internal Partners External Partners• Dept. of Community Planning &
Economic Development - Building Code Plan Review - Planning sections - Housing Policy
• Other City departments - Regulatory Services/HousingInspections
- Public Works, Sewer & Water - Office of Sustainability - City Assessor - City Attorney - Neighborhood & CommunityRelations (Minneapolis for a Lifetime)
• Community members• Builders• Architects• Senior Citizen Advisory Committee• City Council offices• Neighborhood leaders• AARP• Metropolitan Council• Hennepin County• and many more!
Photo credits: Aaron Hanauer, City of Minneapolis
best practices research, internal meetings -------> ------->analysis of issues continually updated ordinance draft based on feedback
OCTOBER - DECEMBERJULY - SEPTEMBERAPRIL - JUNEJANUARY - MARCH
Ordinance introduction by Council Member Bender
4 open houses, survey administered
draft published / 5
th open house
City Planning Commission
Zoning & Planning Committee
City Council adoption
Accessor y D well ing Unit Sur veyPlease complete this questionnaire to provide us with your input on allowance of
accessory dwelling units in Minneapolis. We value your input!
Strongly Agree Agree Neutral Disagree
Strongly Disagree
Don’t Know
1 I would support allowing ADUs in the city of Minneapolis. q q q q q q
Please explain:
2 I would support interior ADUs. q q q q q q
3 I would support attached ADUs. q q q q q q
4 I would support detached ADUs. q q q q q q
5If ADUs were allowed in Minneapolis, I would be interested in adding one to my property.
q q q q q q
Please explain:
6Homestead - either the primary or accessory unit should be owner-occupied for the entire year.
q q q q q q
7
Maximum size - there should be a specific maximum square feet and/or number of bedrooms allowed within an ADU.
q q q q q q
8
Maximum height - there should be a specific height in feet and/or a requirement that the ADU be shorter than the primary unit.
q q q q q q
9
Off-street parking - there should be a minimum of 1 off-street parking space for each dwelling (primary and accessory), even if it means in-creasing impervious surfaces and/or the bulk and height of the ADU.
q q q q q q
10
Design - the ADU should match the primary structure rather than allowing flexibility in materials, colors, or roof style/pitch.
q q q q q q
Please explain:
• 92% supported allowingADUs in Mpls.
• 72% interested in adding anADU.
• 54% supported owneroccupancy.
• 50% supported height orfloor area limitations.
• 44% supported flexibility inthe exterior design (materials,roof style/pitch).
• 55% against requiring 1parking spot for the ADU.
In general• Allowed where single and two-family homes are
permitted.• Either the ADU or the main unit must be owner-
occupied.• No more than 1 per lot.• Must be smaller in area than the principal
structure.• Minimum 1 off-street parking space for each
dwelling unit, but not required to provide anadditional parking space for the ADU.
Attached / Internal• Max. floor area: 800 sq. ft. (with exceptions for
existing structures).• Exterior materials must match principal structure.• Prohibit exterior stairways leading to an upper
story.
Exterior stairways
Detached• Exterior materials must be durable (e.g. brick,
stone, wood).• Prohibit rooftop decks and balconies facing a side
lot line.• Min. 10% windows on elevation facing an alley or
public street.
durable materials 10% windows
Detached• Max. footprint: 676 sq. ft. or 10% of lot.• Must be 20 ft. away from main house.• Allowed up to 3 ft. from side and rear property
lines.
DetachedHeight and area:• Not to exceed principal structure.• Max. area: 1,000 sq. ft.• Max. height: 20 ft.
Minneapolis' Approved Accessory Dwelling Units
Created on September 14, 2015
0 1 20.5Miles °
Data compiled from best available sources. The City
of Minneapolis assumes no legal responsibility for the accuracy
of this map. For illustrative purposes only.
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LegendAccessory Dwelling Units
ADU Type
Attached
Detached
Internal
Unpermitted Units
Median Household Income
Less than $32,000
$32,001 to $53,000
$53,001 to $70,000
$70,001 to $104,000
More than $104,000
45
http://www.ci.minneapolis.mn.us/cped/projects/ADU