Lewisville, TX Accessory Structures: Tiny Homes (2026)

Lewisville regulates tiny homes based on their construction type. Tiny homes built on permanent foundations are treated as conventional dwellings and must comply with the International Residential Code as adopted by the city. They must meet the minimum dwelling unit size established in the zoning ordinance, which is typically at least 1,000 square feet for single-family districts though some districts may allow smaller. All permanent tiny homes require a building permit, must connect to city water and sewer, and must meet energy code, electrical code, and plumbing code requirements. Tiny homes on wheels (THOWs) are classified as recreational vehicles under Texas law and Lewisville zoning. They cannot be used as permanent residences on residential lots. RVs may only be parked in designated RV parks or stored in side and rear yards of residential properties when not occupied. THOWs parked on residential lots and used as dwellings violate the zoning ordinance. Manufactured homes (HUD-code) are only permitted in designated manufactured home zoning districts or parks. Contact Planning at (972) 219-3600 for minimum size requirements in your zoning district and Inspections at (972) 219-3480 for building permit requirements.