Denton County, TX Accessory Structures: Shed Rules (2026)

Shed and storage building regulations in Denton County vary by city and jurisdiction. In the City of Denton, accessory structures under 200 square feet that do not contain electrical or plumbing systems are generally exempt from building permit requirements but must still meet zoning setback rules, typically 5 feet from side and rear property lines. Structures over 200 square feet require a building permit and must comply with the adopted residential building code. In Lewisville, the permit threshold is 120 square feet. Flower Mound requires permits for structures over 120 square feet and limits the total accessory structure coverage to a percentage of the rear yard area. Maximum height for sheds is typically 15 feet in residential zones across most Denton County cities. Metal storage containers and shipping containers used as sheds are generally prohibited in residential zones by most city ordinances within the county. Unincorporated Denton County has fewer restrictions on accessory structures but still requires compliance with county subdivision standards, floodplain regulations, and septic setbacks where applicable. HOA covenants in many Denton County subdivisions impose additional restrictions on shed materials, colors, and placement that may be more restrictive than city codes.