Sammamish, WA Short-Term Rentals: Night Caps (2026)

Unlike jurisdictions that cap unhosted rentals at a set number of nights per year, Sammamish has not adopted any annual or per-booking night cap for short-term rentals. The municipal code contains no maximum-nights provision, and Washington's RCW 64.37 imposes none. The only night-related threshold that matters is definitional: under RCW 64.37.010, a short-term rental is a lodging use offered to a guest for fewer than thirty consecutive nights. That 30-night line determines whether a stay is regulated and taxed as transient short-term lodging or treated as a longer-term tenancy. The Washington Department of Revenue uses the same boundary for tax purposes, defining transient lodging as service furnished for less than 30 continuous days (or less than one month if the rental does not begin on the first of the month). Below that threshold, the stay is taxable transient lodging; at or above it, different rules apply. Because there is no annual cap, a Sammamish property may, as far as city and state STR law are concerned, be rented for short stays throughout the year, subject to zoning, licensing, safety, and tax compliance. Operators should still watch for any future Sammamish ordinance introducing a night cap, and should confirm that bookings structured around the 30-night line are handled correctly for tax purposes.