Arlington, TX Accessory Structures: Tiny Homes (2026)

Tiny home regulation in Arlington hinges on whether the structure is a site-built dwelling, a manufactured home, or a tiny home on wheels (THOW). Site-built tiny homes on permanent foundations must comply with the International Residential Code as adopted by the city, including minimum habitable room sizes, ceiling heights of 7 feet, egress windows, and proper HVAC, electrical, and plumbing systems. Appendix Q of the IRC provides relaxed standards for dwellings 400 square feet or less, including reduced loft ceiling heights and alternative stair/ladder requirements, and Arlington follows these when Appendix Q is adopted. Zoning may impose its own minimum dwelling size in certain districts, commonly 600 to 1,000 square feet, which can exceed the IRC tiny home floor, so zoning verification is critical. Manufactured tiny homes built to HUD code are treated as manufactured housing under Texas Occupations Code Chapter 1201 and face additional placement restrictions in single-family zones. Tiny homes on wheels, built to RVIA standards or as park models, are classified as recreational vehicles and cannot be occupied as permanent dwellings on a lot zoned single-family; they must be placed in licensed RV parks or used only for short-term stays. Texas Local Government Code Chapter 211 authorizes these zoning distinctions. Owner-occupied THOWs placed on private property as permanent residences generally violate Arlington zoning unless the lot is specifically zoned for RV use or the owner obtains a variance. Water, sewer, and electrical connections require permits regardless of the structure type.