ADU Rules in Indiana (2026)
ADU rules in Indiana — no statewide ADU law. Regulation is entirely local. Key provisions and city-specific frameworks for accessory dwelling units.
Law Name
Preempts Local Ordinances
No — local rules may be stricter
Has State Law
No — regulation is local
Statewide Preemption Status Unconfirmed
No statewide preemption statute was confirmed for this jurisdiction — regulation is local. Local governments retain full authority to set their own rules.
Local Control Framework
Indiana does not have a statewide ADU law as of 2026 · Source
ADU regulation is left entirely to local municipalities and counties · Source
Indiana Code Title 36 (Local Government) grants municipalities broad authority over zoning · Source
Indianapolis/Marion County, Fort Wayne, and other cities set their own local ADU rules through local zoning codes · Source
Indiana has been discussing housing supply legislation but comprehensive statewide ADU mandates had not been enacted as of 2026 · Source
Indianapolis Consolidated City-County has a unified zoning code with provisions that may affect ADU development · Source
Source: Indiana Local Zoning Authority. Last verified April 5, 2026. View source