SF 592 - NYU Furman Center

State Land Use Enacted Legislation

Bill #	State	Year	Party	Topic
SF 592	IA	2025	R	Accessory dwelling units regulations, Allow ADUs where single-family homes are permitted, By-right zoning, Impact fees, Limit local requirements on ADU occupants, Manufactured Housing, Minimum parking requirements, Streamline hearings, Written findings, burden and standard of proof

Provided by Furman

Summary

Legalizes ADUs by-right on single-family lots, though they may be prohibited under state historic building codes or rules from common interest communities.
Declares that if a manufactured or mobile home is used as an ADU, it shall be converted to real property by being placed on a permanent foundation and assessed for real estate taxes.
Except otherwise provided by state law, prohibits municipalities/counties from:
- Creating restrictions related to bulk requirements, lot size, or design that are more restrictive than those imposed on a single family residence.
- Adding additional parking requirements for an ADU in addition to those required for the single-family residence.
- Imposing rent regulations for ADUs that are more restrictive than existing state landlord/tenant laws.
- Requiring a separate utility line or impact fee for the ADU (cannot be a different fee structure than those used for the single family residence on the lot).
The bill states a county shall approve ADUs without discretionary review or a hearing, and consistent with the time frame assigned to approval for a single-family residence. If denied, the county must provide the reason for denial in writing.
Declares any ordinances that conflict with this subsection as void, though local ordinance can be more permissive than these requirements.