Bellingham, WA Property Maintenance: Garage Sale Rules (2026)

Bellingham does not have a stand-alone garage-sale ordinance setting numeric caps on consecutive days or annual sale-days (unlike Longmont's 3-day / 12-day limits). Occasional residential garage, yard, moving, or estate sales are treated as permitted accessory residential activity. The constraints come from three places: (1) BMC 20.12.040 sign rules — one unlighted on-premise temporary sign up to 6 sq ft per residential street frontage, no off-premise signs in the public right-of-way; (2) BMC Chapter 20.10 (Residential and Mixed Use District Standards) and BMC home-occupation provisions — a recurring or commercial-scale sale operating from a residence may cross the line into an unpermitted home occupation or commercial use in a residential zone, which is enforceable; and (3) Washington State Department of Revenue rules — occasional sales of personal household property by a non-business seller are not subject to retail sales tax, but recurring or business-volume activity triggers state business registration, sales-tax collection, and a Bellingham business license. Estate sales conducted by professional estate-sale companies typically require a Bellingham business license for the operator. Code Compliance enforces residential-zone use violations under BMC Chapter 10.28 procedures (7-day notice under BMC 10.28.030) when a residence is operated as a continuing retail outlet.