ADU Rules: Grand Rapids vs Wyoming
How do adu rules rules compare between Grand Rapids, MI and Wyoming, MI?
Grand Rapids and Wyoming have similar restriction levels.
Grand Rapids, MI
Kent County
Grand Rapids permits Accessory Dwelling Units (ADUs) in residential zones. ADUs must be 400-850 sq ft, not exceed 40% of the main house floor area, and cannot be rented for less than 30 days.
View full Grand Rapids rules →Wyoming, MI
Kent County
Wyoming is a home-rule city in Kent County (population approximately 77,000) just southwest of Grand Rapids, with its municipal code (including the Zoning Ordinance) hosted on Municode at https://library.municode.com/mi/wyoming. Michigan has no statewide accessory dwelling unit preemption statute; ADU permissibility, owner-occupancy requirements, density caps, and design standards in Wyoming are determined entirely by the Wyoming Zoning Ordinance under the Michigan Zoning Enabling Act (MCL 125.3201 et seq.). Property owners must consult the Wyoming Zoning Ordinance and the Wyoming Department of Community and Economic Development (Planning Division / Zoning Administrator) for whether ADUs (typically referred to as accessory dwelling units or accessory apartments) are permitted by right, by special land use, or by variance in the applicable residential district.
View full Wyoming rules →Key Facts Comparison
| Fact | Grand Rapids | Wyoming |
|---|---|---|
| Size Range | 400–850 sq ft | - |
| Max Floor Area | 40% of main house | - |
| Minimum Lease | 30 days | - |
| Annual Rental Limit | 11 different parties per year | - |
| Types | Attached, detached, or internal | - |
| State ADU Preemption | - | None (locally controlled) |
| Local Authority | - | Wyoming Zoning Ordinance |
| Enabling Statute | - | MI Zoning Enabling Act (MCL 125.3201+) |
| Construction Code | - | MI Single State Code (MCL 125.1501+) |
| Review Bodies | - | Planning Commission / ZBA |
| Court | - | 62-A District Court (civil infractions) |
Highlighted rows indicate differences between cities.
Grand Rapids FAQ
Can I build an ADU in Grand Rapids?
Yes. ADUs between 400 and 850 sq ft are allowed in residential zones. They cannot exceed 40% of the main house floor area. Rentals must be at least 30-day terms.
Can I use my Grand Rapids ADU as an Airbnb?
No. ADUs may not be rented for less than 30 days and are limited to 11 different rental parties per year. Short-term rental use is not permitted.
Wyoming FAQ
Are ADUs allowed in Wyoming, MI?
There is no statewide right to build an ADU in Michigan. Whether an accessory dwelling unit is permitted on your Wyoming property depends on the underlying residential district under the Wyoming Zoning Ordinance. Contact the Wyoming Department of Community and Economic Development (Planning Division) for a written zoning determination before designing or applying for permits.
What state law governs Wyoming ADU rules?
The Michigan Zoning Enabling Act (MCL 125.3201 et seq., PA 110 of 2006) authorizes Wyoming to adopt and enforce its own zoning ordinance, including ADU standards. Unlike California or Oregon, Michigan has not enacted statewide ADU preemption. Construction must comply with the Stille-DeRossett-Hale Single State Construction Code Act at MCL 125.1501 et seq., which adopts the Michigan Residential Code based on the IRC.
Compare other topics
See how Grand Rapids and Wyoming compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool