ADU Laws in Indiana (2026)
Indiana state ADU law details, key provisions, preemption status, and recent legislative changes for accessory dwelling units.
Law Name
State ADU Law
Preempts Local Ordinances
No — local rules may be stricter
Has State Law
Yes
Key Provisions
Indiana does not have a statewide ADU law as of 2026
ADU regulation is left entirely to local municipalities and counties
Indiana Code Title 36 (Local Government) grants municipalities broad authority over zoning
Indianapolis/Marion County, Fort Wayne, and other cities set their own local ADU rules through local zoning codes
Indiana has been discussing housing supply legislation but comprehensive statewide ADU mandates had not been enacted as of 2026
Indianapolis Consolidated City-County has a unified zoning code with provisions that may affect ADU development
Official Sources
Source: Indiana State ADU Law. Last verified April 5, 2026. View source