Muncie, IN Accessory Structures: ADU Rules (2026)
ADU rules in Muncie, IN, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.
Key Facts
- R-3 zone approval
- special use, Board of Zoning Appeals
- R-4 zone approval
- permitted use since 2025 amendment
- Minimum floor area
- 300 square feet
- Parking
- additional off-street spaces per Sec. 150.211
- R-4 amendment
- Ord. No. 24-25, § 20, effective 8-4-25
- General penalty
- up to $2,500.00 per offense
Summary
An accessory dwelling unit in Muncie's R-3 Residence Zone cannot go up without a hearing. Muncie City Code Sec. 150.76(F) makes it a special use requiring Board of Zoning Appeals approval, a minimum 300-square-foot floor area, and extra off-street parking under Sec. 150.211.
(F)Accessory dwelling provided the floor area of the accessory dwelling be not less than 300 square feet and provided the additional off-street parking requirements are met in accordance with § 150.211.
Full Breakdown
Sec. 150.240 defines an accessory dwelling as a second dwelling unit accessory to the principal dwelling, allowed in the R-3 and R-4 residence zones when approved by the board of zoning appeals, at least 300 square feet in area, with additional off-street parking spaces required. The operative regulation for the R-3 Residence Zone sits in Sec. 150.76(F): an accessory dwelling is listed among the special uses subject to approval by the Delaware-Muncie Metropolitan Board of Zoning Appeals, conditioned on a floor area not less than 300 square feet and additional off-street parking meeting Sec.
150.211. Getting that approval means following the special-use procedure in Sec. 150.216: filing an application with the board, a Plan Commission study and written recommendation, then a public hearing where the board weighs the commission's report against surrounding conditions before deciding. The R-4 Residence Zone has moved further: a 2025 amendment (Ord. No. 24-25, § 20, 8-4-25) added accessory dwellings to the permitted-use list in Sec. 150.85(H), using the identical 300-square-foot minimum and Sec. 150.211 parking condition, while the matching special-use entry in Sec. 150.86(F) now reads [Reserved.].
In practical terms, an accessory dwelling meeting the size and parking standard no longer needs a Board of Zoning Appeals hearing in the R-4 zone, but it still does in R-3. The administrative zoning officer under Sec. 150.232 issues the zoning permit and certificate of occupancy for either scenario and can revoke them for noncompliance. No dedicated ADU penalty exists in Chapter 150, so a violation is punished under the citywide general penalty in Sec. 10.99, fined not more than $2,500.00 per offense.
Violations & Fines
Building or occupying an accessory dwelling in the R-3 zone without the Board of Zoning Appeals special-use approval required by Sec. 150.76(F), or without meeting the 300-square-foot minimum and Sec. 150.211 parking, is a zoning violation the administrative zoning officer enforces under Sec. 150.232 through permit denial, revocation, or injunctive relief in Delaware County Circuit or Superior Court. The general penalty in Sec. 10.99 applies, fining each offense up to $2,500.00.
Frequently Asked Questions
Can I build an accessory dwelling unit in Muncie's R-3 zone?
How big must a Muncie accessory dwelling be?
Does an ADU in Muncie's R-4 zone need a Board of Zoning Appeals hearing?
Does an accessory dwelling need extra parking in Muncie?
Sources & Official References
Other rules in Muncie
How Muncie compares: Easiest Cities to Build an ADU·Compare Muncie to another location·View the Indiana accessory structures overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.