Michigan MCL 125.3205 — Prohibition on Mandatory Inclusionary Zoning (MI)
Tracked preemption from the Michigan overlay bundle.
Overview
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Effective
1988-01-01
Sunset
—
Authority
state
Scope
state:MI
Other Michigan preemptions
Michigan Recodified Tax Increment Financing Act — 2018 PA 57Detroit Transit-Oriented Corridor — People Mover + QLINEMichigan Regulation and Taxation of Marihuana Act (MRTMA) — Local Opt-Out & Establishment SitingDetroit Land Bank Authority — Tax-Foreclosed Property Disposition & Blight ProgramsMichigan Zoning Enabling Act (MZEA) — Unified Zoning AuthorityMichigan MCL 125.3207 — Moratoria Duration & Renewal LimitsMichigan Renaissance Zone Act — 1996 PA 376Michigan Brownfield Redevelopment Financing Act — 1996 PA 381
Primary-source summary
Michigan Zoning Enabling Act (MZEA) — MCL 125.3101 et seq.Trigger predicate
When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.
always true
Preempted fields
2 fields on the base district schema are rewritten when the trigger fires.
| Field | Op | Value | Note |
|---|---|---|---|
inclusionary_zoning_mandate | prohibit | mandatory_below_market_set_aside | Local units exercising MZEA authority cannot require below-market unit set-asides, control rents/prices, or condition zoning approval on affordability designation. |
base_districts[*].affordability_set_aside_pct | waive | — | Any zoning condition mandating an affordable set-aside is facially invalid. Voluntary density-bonus / fee-waiver / tax-abatement programs are NOT preempted. |
Citation
Authority source
MCL 125.3205 (codifying 1988 PA 48 ban, re-enacted in 2006 PA 110)
Research notes
Cleanest preemption in MI zoning law — express substantive ceiling. Voluntary IZ, PILOT/LIHTC/MSHDA-funded deed-restricted projects, brownfield/TIF/NEZ/OPRA negotiated affordability, and Detroit Community Benefits Ordinance contract-based negotiation all remain available. As of 2026-05-18, reform proposals to permit opt-in mandatory IZ have not advanced past committee.