Troy Zoning & Land Use Guide
Key Zoning Facts
Troy Zoning Overview
Troy is an affluent suburban city in Oakland County known as a major business and retail center, home to numerous corporate offices and the Somerset Collection shopping center. The zoning ordinance is administered by the Planning Department and divides the city into residential, commercial, and industrial districts with specific dimensional and use regulations.
The city has been updating its master plan and zoning to address evolving development needs, including commercial corridor revitalization, housing diversification, and infrastructure improvements. Michigan's Zoning Enabling Act provides the statutory framework for local zoning authority.
Troy continues to adapt its land use regulations to balance established neighborhood character with new development pressures and changing economic conditions in the greater Michigan region.
Key Zoning Districts
Troy's zoning includes One-Family Residential (R-1A) for low-density areas, Multiple-Family Residential (R-M) for higher-density residential, and General Commercial (C-2) for commercial uses. Additional districts cover industrial, office, and special-purpose areas.
ADU Regulations
Troy does not currently have specific ADU provisions in its zoning ordinance. Michigan has no statewide ADU mandate. Property owners interested in adding a secondary dwelling should contact the Planning Department.
Development Process
Development in Troy begins with a zoning review at the Planning Department. Conforming projects proceed to the Building Department for permits. Projects requiring relief apply to the Zoning Board of Appeals. Larger commercial and multi-family projects may require Planning Commission site plan review.
Regulatory Layers That Apply in Troy
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 — Oakland 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
- Min Lot
- 12,000 sq ft
- Max Height
- 30 ft
- Front Setback
- 30 ft
- Side Setback
- 8 ft
- Rear Setback
- 35 ft
- Min Lot
- 2 acres
- Max Height
- 40 ft
- Front Setback
- 40 ft
- Side Setback
- 25 ft
- Rear Setback
- 40 ft
- Min Lot
- None
- Max Height
- 40 ft
- Front Setback
- 30 ft
- Side Setback
- 0 ft
- Rear Setback
- 10 ft
ADU Rules in Troy
- Max Size
- N/A
- Max Height
- N/A
- Rear Setback
- N/A
- Side Setback
- N/A
- Parking
- N/A
- Owner Occupancy
- N/A
- Permit Timeline
- N/A
Permit Costs & Timelines
Permit Costs & Timelines
Specific permit fee schedules for Troy are available from the local planning department. Fees vary based on project type, scope, and valuation.
Check Troy permit fees →