Ann Arbor Zoning & Land Use Guide
Last updated: Verified:
Key Zoning Facts
Regulatory Layers That Apply in Ann Arbor
Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.
Federal
- FEMA Flood Zones: Applicable
- View FEMA Flood Map
State — Michigan
- Building Code: Michigan Building Code (based on 2021 IBC)
County — Washtenaw County
- Role: Property records, tax assessment, unincorporated area planning
City / Municipal
The city's zoning ordinance, building codes, and local permits form the primary layer of land-use regulation for your property.
Overlay Districts
No overlay districts identified.
Private Restrictions
- HOA / CC&Rs common: Yes
- Check HOA CC&Rs for additional restrictions.
Primary Zoning Districts
| District Code | Name | Min Lot | Max Height | Front Setback | Side Setback | Rear Setback | FAR |
|---|---|---|---|---|---|---|---|
| R1A | Single-Family Dwelling | 5,500 sq ft | 30 ft | 25 ft | 5 ft | 30 ft | — |
| R4B | Multi-Family Dwelling | 6,000 sq ft | 45 ft | 15 ft | 8 ft | 15 ft | — |
| C1 | Local Business | None | 30 ft | 0 ft | 0 ft | 10 ft | — |
ADU Rules in Ann Arbor
ADUs:Allowed
- Max Size
- 800 sq ft
- Max Height
- 20 ft
- Rear Setback
- 3 ft
- Side Setback
- 3 ft
- Parking
- No additional parking required
- Owner Occupancy
- Owner must occupy one unit
- Permit Timeline
- 45-90 days
Official Sources
Frequently Asked Questions
Frequently Asked Questions
Can I build an ADU in Ann Arbor?
Yes. Ann Arbor allows accessory dwelling units in residential zones, subject to size limits, setback requirements, and owner-occupancy mandates. The city has been expanding ADU provisions to address housing affordability.
How do I find the zoning for my property in Ann Arbor?
Use the City of Ann Arbor's online zoning map or contact Planning and Development Services for parcel-specific zoning data.
What zones allow multi-family housing in Ann Arbor?
Multi-family housing is permitted in R2A through R4E residential districts, C1 through C3 commercial districts, and D1/D2 downtown districts.
Disclaimer: The information on this website is provided for general informational purposes only and does not constitute legal, financial, or professional advice. Zoning codes and building regulations change frequently. Always verify current requirements with your local planning department and building authority before making any decisions.