Swimming pool permit rules in Lassen County, CA — also covering above-ground pools, in-ground pools, and spa installations — set fencing, barrier, alarm, and inspection requirements.
In unincorporated Lassen County, a building permit from the Planning and Building Services Department is required before constructing or installing any swimming pool or spa. The County has no separate pool-specific ordinance; pools are regulated through the Lassen County Building Code (Title 12), which adopts the 2022 California Building Standards Codes including the California Residential Code.
Lassen County Code Title 12 (the Lassen County Building Code) makes it unlawful to erect, construct, enlarge, alter, or move any building or structure in the unincorporated territory of the County without first obtaining a building permit from the Lassen County building official. A residential in-ground or above-ground swimming pool or spa is a structure subject to this requirement. The County adopts the 2022 California Building Standards Codes by reference, including the California Building Code (CBC), California Residential Code (CRC), California Plumbing Code, California Electrical Code, and California Green Building Standards Code. Plan review covers the pool shell, electrical bonding/grounding, plumbing, and the drowning-prevention barrier and safety features required by the California Swimming Pool Safety Act (Health and Safety Code 115922-115929). The County does not publish a standalone pool fee schedule online; valuation-based building permit fees apply and are determined by Planning and Building Services. Applications can be submitted through the County's online permitting portal. Because Lassen relies on adopted state codes rather than a custom local pool ordinance, the state requirements effectively set the standard.
Constructing a pool or spa without a building permit violates Lassen County Code Title 12 and can result in stop-work orders, code-enforcement citations, double permit fees, and required removal or correction. Pools that fail to meet the California Swimming Pool Safety Act barrier and safety-feature requirements will not pass final inspection.
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