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

Internal

Attached

Detached Image credits: Peter Crandall, City of Minneapolis

Unlikely to qualify

Durable materials? Window coverage?

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.

Minimum size: 300 square feet

office /bathroom TV room/bathroom

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 - materials and roof pitch• Neither are required to match principal structure.

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.

Detached: height and stories• Allows for both 1.5 and 2 story structures.

Internal 1918 Cedar Lake Pkwy

Attached 4700 & 4704 Bryant Ave N

Detached 3210 Zenith Ave S

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