Sammamish, WA Parking Rules: Oversized Vehicle Parking (2026)

Sammamish has no oversized-vehicle parking ordinance setting maximum lengths, heights, weights, axle counts, or time-of-day bans for large vehicles on residential streets, unlike some neighboring cities. An oversized motorhome, RV, trailer or large truck on a public street is regulated by the general provisions of SMC Chapter 46.30: it may not park or stand for more than 72 consecutive hours (SMC 46.30.060), it cannot be an unlicensed vehicle in the public right-of-way (SMC 46.30.050), and it must avoid the prohibited locations in SMC 46.30.070 and adopted RCW 46.61.570/46.61.575 (bike lanes, sidewalks, crosswalks, hydrants, driveways, intersections). The lack of a dedicated size rule became a public issue when residents complained about a very large motorhome that repeatedly relocated to reset the 72-hour clock and asked the City Council for an ordinance clearly prohibiting chronic on-street RV parking. The council ultimately tightened its general parking ordinance and enforcement (including the unlicensed-vehicle prohibition and stricter mailbox-clearance rules) rather than adopting an oversized-vehicle dimensional standard.