Pennsylvania Tiny Home Rules (2026)

Key Facts

Code Standard: IRC Appendix Q
Threshold: ≤400 sq ft
Statute: PA UCC Act 45
RV Status: DOT-titled, separate

Full Breakdown

The Pennsylvania UCC (Act 45 of 1999) adopts the International Residential Code, including Appendix Q for dwellings 400 square feet or less. All municipalities enforcing UCC must apply these baseline requirements covering ceiling height, lofts, ladder access, and emergency egress. Tiny homes on permanent foundations must comply. Park-model RVs registered as vehicles fall under separate DOT rules.

Violations & Penalties

Occupying a non-conforming tiny home as a permanent dwelling can result in UCC enforcement, certificate-of-occupancy denial, and civil penalties up to $1,000 per day until corrected.

Frequently Asked Questions

Are tiny homes legal in Pennsylvania?

Yes, on permanent foundations meeting the PA UCC and IRC Appendix Q standards. Local zoning controls minimum lot sizes, dwelling-size minimums, and accessory-dwelling status separately.

Can I park a tiny home on wheels permanently in PA?

Park-model RVs are DOT-titled vehicles and generally cannot serve as permanent dwellings. Local zoning typically prohibits permanent RV occupancy outside licensed campgrounds or specific zones.

Pennsylvania Tiny Home Building Code Compliance Statewide

Key Facts

Full Breakdown

Violations & Penalties

Frequently Asked Questions

Sources

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