Lake County, CA Swimming Pools & Spas: Hot Tub Rules (2026)

Lake County's barrier handout distinguishes two spa types. A 'self-contained' spa is a continuous-duty appliance in which all control, water-heating, and water-circulating equipment is integral to the product and located entirely under the spa skirt; it holds water over 18 inches deep. Under the handout's stated exception, hot tubs or spas meeting the self-contained definition AND having a locking safety cover that complies with ASTM ES 13-89 (ASTM F-1346) are EXEMPT from the fence enclosure requirement, consistent with 2019 CBC 3109.4.4.5. Such self-contained units may even be recessed below the adjoining floor, deck, or grade so long as the manufacturer's specifications allow it and the safety cover operates normally. By contrast, a 'non-self-contained' spa - a hydro-massage pool or tub with a separate filter, heater, and motor-driven blower, holding water over 18 inches deep - is considered a swimming pool, and an enclosure is required to comply with 2019 CBC 3109.4.4.2 and 3109.4.4.3 (the full Part A and Part B requirements). The County's electrical-code provisions also address spas and hot tubs: listed package units may be connected with a cord no longer than 15 feet and must be GFCI protected, and a disconnect must be within sight and at least 5 feet from the inside edge of the spa or hot tub. Confirm permitting details with the Building & Safety Division.