Issaquah, WA Parking Rules: Overnight Parking (2026)

Section 10.28.015 of the Issaquah Municipal Code sets a 24-hour limit, not an overnight-hours ban. Chapter 10.28 as exported prints no separate overnight prohibition, so the clock that matters is the 24-hour period, and a posted shorter period overrides it. The section applies to any highway or publicly owned parking lot, and it defines "highway" as the entire width between the boundary lines of every way publicly maintained when any part is open to the public for vehicular traffic. That definition covers the whole street, not only the travel lanes.

What happens after 24 hours is spelled out. The vehicle can be deemed a hazard or obstruction to traffic or an abandoned vehicle, and can be impounded in accordance with state law. Chapter 10.34 governs the mechanics. Section 10.34.010 adopts Chapter 46.55 RCW by reference, calls an officer's decision to tow discretionary, and says the impound is remedial and not punitive. Under 10.34.040(B), a vehicle parked in violation of a law, ordinance or regulation is impounded only after a notification sticker meeting RCW 46.55.085 has been attached and displayed for at least 24 hours, and the officer must make a reasonable effort to contact the last owner of record by person, telephone or first-class mail. A vehicle that is impeding traffic or poses an immediate danger to public safety can be impounded without prior notice under 10.34.040(A).

Two neighboring rules also limit long-term parking. Section 10.28.080 prohibits stopping, standing or parking trucks and vehicle combinations exceeding 30 feet in total length for more than 6 hours on streets in residential areas, meaning areas zoned or used for single-family or multiple-family residential purposes. Section 10.28.074 bars parking on a highway or publicly owned lot for the principal purpose of displaying the vehicle for sale, washing or repairing it, displaying advertising, or selling merchandise. The online code flags these sections as amended by Ordinance 3149 with a pending effective date of 11/18/2026.