Sammamish, WA Fire Regulations: Propane Storage (2026)

Sammamish does not have a separate stand-alone propane ordinance. Instead, the storage and use of liquefied petroleum gas (LP-gas / propane) are regulated through the 2021 Washington State Fire Code, which the city adopted under Sammamish Municipal Code 16.05.130 (WAC 51-54A, based on the International Fire Code). Eastside Fire & Rescue, the fire authority serving Sammamish, enforces these provisions through plan review and fire prevention. The Washington State Fire Code's LP-gas chapter sets standards for cylinder and tank sizes, separation distances from buildings and property lines, and aggregate quantity limits, with larger installations requiring permits and inspections. For typical homeowners, small portable propane cylinders used with barbecue grills and patio heaters are permitted, but the fire code restricts the quantity that may be stored, particularly indoors and in multifamily settings, and requires that cylinders be stored upright in a ventilated outdoor location away from ignition sources. Larger residential or commercial propane tanks must meet the fire code's tank-placement and clearance requirements and generally require a permit. Because the precise cylinder limits, separation distances, and permit thresholds are set by the adopted state fire code rather than a unique Sammamish section, residents and businesses planning to store larger quantities of propane should consult Eastside Fire & Rescue and the city's building/fire permit process for the applicable requirements.