Snohomish County, WA Short-Term Rentals: Parking Rules (2026)

Snohomish County's Unified Development Code (Title 30 SCC) does not list short-term rental as a separate use in the use matrices at SCC 30.22.100 through 30.22.120, so an STR in a single-family or duplex dwelling in unincorporated Snohomish County is treated as the underlying residential use for parking purposes. Off-street parking minimums in the SCC parking and circulation chapter generally require two off-street stalls per single-family detached dwelling and one additional stall for an accessory dwelling unit; a duplex requires two stalls per unit. Bed and breakfast inns and guesthouses are allowed in many residential and rural zones by administrative conditional use permit under SCC 30.28.020 and add off-street parking equal to the underlying residential standard plus one stall per guest room. On-street parking on county roads is governed by SCC Title 13 (Roads and Bridges) and the state rules of the road in Chapter 46.61 RCW; vehicles cannot block driveways, fire hydrants, mailboxes, or sight distance, and parked vehicles cannot create a traffic hazard. Many unincorporated rural roads have no shoulder and no on-street parking. RVs, trailers, and oversized guest vehicles parked on residential lots must comply with SCC 30.28 accessory-use standards and any applicable HOA covenants. STR operators should also confirm whether emergency vehicle access is maintained per the International Fire Code adopted under WAC 51-54A and Snohomish County Fire Marshal requirements.