Willis, TX Swimming Pools & Spas: Hot Tub Rules (2026)

Hot tubs and spas in Texas are regulated primarily for electrical safety and barrier protection. In unincorporated Montgomery County, no building permit is required, but Texas Health & Safety Code §757 enclosure rules apply to any spa capable of holding water deeper than 24 inches unless the spa has a locking, rigid safety cover meeting ASTM F1346 performance standards — this is the standard exception used in Texas case law. In the City of Conroe, Code Ch. 18 requires an electrical permit (~$50-$150) for the dedicated 240V/50A circuit. NEC Article 680 requires GFCI protection, equipotential bonding grid, and disconnect within sight but at least 5 feet from the spa wall. Structural load: plug-in 110V spas weigh 3,000-4,000 lbs filled; a 240V 6-person spa can exceed 5,000 lbs. Elevated deck installations require PE analysis. Setbacks under Conroe UDC: 5 feet from side/rear property lines, behind front building line. Lake Conroe shoreline installations need SJRA review. The Woodlands DSC approval required; many villages mandate screening from street view. Drainage of hot tub water must not discharge onto neighboring property (Water Code §11.086) or storm drain.