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

Subsection E.1 of the vehicle parking and storage section is a flat prohibition: it is unlawful for any person to park or store commercial vehicles in residential areas. The only carve-out is for temporary parking for delivery, pick up, moving, or service activities, so a moving truck or a contractor's service van at a house for the job is outside the ban, while a work vehicle kept at the house overnight as its home base is not. The code defines "commercial vehicle" by reference to the Federal Highway Administration (FHWA) standardized vehicle classification system, counting any vehicle type defined within Classes 4 through 13.

The section's stated intent explains the ban. Section 18.604.150(A) says the standards protect property values by reducing visual blight, aid in emergency access and fire safety, guard against rodent and pest harborage, and reduce the impact of leaking motor vehicle fluids on the natural environment. Neighboring subsections add related limits: disabled or unlicensed vehicles and boats cannot be kept on residential property unless stored out of public view in a fully enclosed building, a vehicle counts as disabled once it has not been operated or repaired for over 30 days, and all vehicles kept on site must be operational, currently registered and licensed.

A separate Municipal Code rule governs the street itself. Under IMC 10.28.080, the stopping, standing and parking of trucks and vehicle combinations exceeding 30 feet in total length for in excess of 6 hours is restricted and prohibited upon streets in residential areas, defined as the parts of the City zoned or used for single-family or multiple-family residential purposes. The code site flags that section, along with 10.28.090, as amended by Ordinance 3149 with a pending 11/18/2026 effective date.