Mono County, CA Swimming Pools & Spas: Above-Ground Pools (2026)

Mono County's zoning code does not create a separate category for above-ground pools; the swimming-pool standards in Section 04.120(7)(e) apply to 'pools, spas and hot tubs' generally. That section requires that they 'may not be located closer than 5 feet from any side or rear lot line, nor shall they encroach into any easements,' and on corner lots 'no pool shall be located closer than 10 feet to the lot line abutting the side street.' An above-ground pool typically also requires a building permit from the Mono County Building Division when it constitutes construction subject to state codes; portable, small, or temporary pools may be treated differently, so applicants should confirm with the Building Division. Where the structure is a permanent installation, the California Swimming Pool Safety Act applies: a new pool must include at least one approved drowning-prevention feature, and an above-ground pool wall at least 60 inches high with a compliant, secured ladder/access can serve as part of that barrier system. Any deck, surrounding fence, or screen must also respect the County's general fence height limits — up to 7 feet, but no more than 4 feet within a required front yard (Section 04.160).