Louisiana Tiny Homes Law: Statewide Accessory Structures Rules (2026)

Key Facts

Code provision: IRC Appendix Q adopted
Tiny home size: 400 sq ft or less
On-chassis units: RV/HUD rules apply
Local zoning: Still controls siting

Full Breakdown

The Louisiana State Uniform Construction Code Council has adopted IRC Appendix Q, which governs site-built tiny homes 400 square feet or smaller. Under La. R.S. 40:1730.28, this construction standard is mandatory statewide and cannot be weakened by parish or municipal amendments. Appendix Q permits reduced ceiling heights in lofts, ladder access, and modified egress windows. Tiny homes built on chassis are regulated as park trailers or RVs under federal HUD or ANSI standards rather than the LSUCC. Local zoning may still restrict where tiny homes may be sited, minimum dwelling size for the district, and use as primary residence.

Violations & Penalties

Building a permanent tiny home without LSUCC permits or siting one outside permitted zoning can lead to stop-work orders, removal demands, and denial of utility connections.

Frequently Asked Questions

Are tiny homes legal everywhere in Louisiana?

Construction standards are uniform statewide, but local zoning determines where tiny homes can be placed and may set minimum dwelling sizes that exclude some tiny home designs.

Does a tiny home on wheels need a Louisiana building permit?

Generally no. Tiny homes built on a chassis follow RV or HUD manufactured housing rules, not the LSUCC, though local zoning may still regulate placement.

Louisiana Tiny Home Construction Code Standards