ADU Pass
Dryden
Oakland County portion
Also in: Lapeer County
ADU Pass helps homeowners in Dryden, Oakland County, Michigan navigate the permit paperwork for building an accessory dwelling unit. This area covers 1 ZIP code.
Map
Oakland County — county ADU rules and overlays
County ADU ordinance
Oakland County, MI (1.27M residents in suburban Detroit) does not exercise broad zoning authority over its 61 municipalities. Each (Troy, Farmington Hills, Rochester Hills, Pontiac, Southfield, Royal Oak, Bloomfield Hills, Birmingham, Auburn Hills, Novi) sets its own ADU rules under the Michigan Zoning Enabling Act.
State-floor overlay: No Michigan statewide ADU preemption.
County regulatory overlays
Oakland County administers flood-hazard, and (where mapped) coastal, wildland-fire, historic, and airport overlays that shape ADU project feasibility. The most consistent overlay across the county is FEMA NFIP floodplain regulation; other overlays apply to specific geographies inside the county.
- FEMA NFIP Special Flood Hazard Areas in Oakland County — A new ADU in a mapped SFHA must be elevated to or above the Base Flood Elevation; cost impact on the project is often material.
- Historic districts and individually-listed historic resources
County permitting (unincorporated parcels)
Oakland County issues building permits for parcels in unincorporated territory through its development services / planning department, with separate review tracks for zoning conformance, building-code compliance, on-site sewage where applicable, floodplain compliance, and addressing. Inside incorporated municipalities, city departments handle their own permits; the county's authority is geographically limited to unincorporated territory. An ADU permit application is typically processed as a residential building permit with a zoning verification step against the county's ordinance for the parcel's zoning district.
Michigan state — ADU law and programs
State financing programs
Michigan does not currently operate an ADU-specific statewide loan, grant, or forgivable-loan program. The Michigan State Housing Development Authority (MSHDA), established 1966, administers the MI Home Loan and MI Home Loan Flex mortgage products, the MI 10K DPA Loan (up to $10,000 down-payment assistance as a 0% interest second mortgage due at sale or payoff), and the MI Neighborhood statewide housing grant program. MSHDA's housing-readiness initiatives explicitly mention streamlining site-plan review and approval for ADU and missing-middle projects, but no ADU-targeted construction loan exists yet. ADU costs may be financed through standard renovation or construction loans when the ADU is part of a qualifying primary-residence transaction.
State housing programs
Michigan's primary state-level ADU-related programs are MSHDA's Housing Ready Initiative (technical assistance to municipalities for streamlined ADU and missing-middle approval processes) and the MI Neighborhood statewide housing grant. There is no statewide pre-approved ADU plan catalog, no statewide ADU rebate, and no statewide ADU impact-fee waiver statute. The pending HB 5529-5531 / HB 5581-5585 zoning preemption package, if enacted, would establish a statewide ADU floor; until then, state-level intervention is technical-assistance-only.
- MSHDA Housing Ready Initiative — Technical assistance to Michigan municipalities to streamline ADU, missing-middle, and infill-housing approvals. Focuses on site-plan review, density-friendly zoning, and ministerial-permit pathways.
- MI Neighborhood Statewide Housing Grant — MSHDA grant program for housing-supply expansion. Can fund municipal ADU pilot programs and ADU-supportive infrastructure investments.
Federal (United States) — ADU-relevant rules and programs
Federal ADU law
The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.
Federal financing programs
Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.
Federal tax credits
There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.
Federal housing programs
HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.
ZIP Code
- 48367
Post Office
- 5580 Main St, 48428