Snohomish County, WA Parking Rules: Commercial & Oversized Vehicles (2026)

030 makes it unlawful to park or store a large commercial vehicle, trailer, or construction equipment on any public road adjacent to or within an urban residential area, unless the vehicle is actively loading or unloading materials or passengers, or is covered by an approved right-of-way permit under Title 13 SCC. 21 SCC, listing zones R-9,600, R-8,400, R-7,200, T, LDMR, MR, and MHP. 'Large commercial vehicle' means anything with a GVWR of 14,001 pounds or more used to haul commodities, freight, or livestock, or used in construction, industry, or farming, such as bulldozers, backhoes, cranes, and welding rigs; vehicles at or under 14,000 pounds GVWR are excluded.

040 caps parking or storage of a large commercial vehicle or trailer there at 12 hours within any 24-hour period, again unless authorized by a Title 13 right-of-way permit. 040(2) both state that restricted-parking signs do not need to be posted for the county to enforce either rule, so the absence of a sign is not a defense. The chapter, added by Ordinance 19-044 in 2019, applies only on public roads in unincorporated county territory and does not reach the incorporated cities that ring it.