Sammamish, WA Parking Rules: Commercial Vehicle Restrictions (2026)

Sammamish municipal code does not single out commercial vehicles for special on-street parking thresholds the way some cities do. A commercial truck, box van or trailer parked on a public street is subject to the same rules as any vehicle: it may not stand or park for more than 72 consecutive hours (SMC 46.30.060), it may not be an unlicensed vehicle in the right-of-way (SMC 46.30.050), and it must obey the prohibited-place rules in SMC 46.30.070 and the adopted state statutes RCW 46.61.570 and 46.61.575. Where Sammamish does regulate commercial vehicles is through land use: the Sammamish Development Code (Title 21, Section 21.07.080, Development Standards - Parking and Circulation) requires that dedicated truck loading zones and service areas for commercial businesses generally be located at the back of the building and not face a pedestrian or residential street, with an exception for on-street loading zones and businesses under 20,000 square feet that use parking spaces for incidental deliveries. Long-term storage of commercial vehicles on residential lots is also constrained by the city's zoning and nuisance provisions rather than a stand-alone parking-code section.