Mono County, CA Fire Regulations: Propane Storage (2026)

No unique unincorporated-county propane ordinance was identified for Mono County; LPG storage is governed by the California Fire Code (CCR Title 24, Part 9, Chapter 61 - Liquefied Petroleum Gases) and the referenced standard NFPA 58 (Liquefied Petroleum Gas Code), which California adopts statewide and which the county applies through building permits and fire review. Under NFPA 58 setback tables, common residential tanks up to 125 gallons water capacity must sit at least 10 feet from buildings, structures, and property lines (and a 100-lb cylinder at least 3 feet from building openings and 5 feet from ignition sources). A 500-gallon above-ground tank (a typical rural size) must be at least 10 feet from any building or structure, 10 feet from any property line, and 10 feet from any ignition source; tanks of 501-1,000 gallons require 25 feet. Indoor storage of LP-gas containers is generally prohibited except small listed cylinders. Mono County's own Fire Safe Regulation (Chapter 22) separately requires defensible space and vegetation clearance around structures, and combustible vegetation should be kept well clear of tanks. Because Mono County is high-wildfire country, owners should verify tank placement, clearances, and any permit needs with Mono County Building & Safety and the local fire authority before installation.