Seattle, WA Home Business: Customer Traffic Restrictions (2026)
Key Facts
- Vehicle cap
- 3 vehicles tied to the business
- Vehicle weight limit
- under 10,000 lbs GVW each
- Parking rule
- only where already legal on lot
- Spillover rule
- no impacts beyond the property line
- Enforcement
- SDCI notice of violation, up to $500/day
Summary
Seattle's home-occupation ordinance caps the vehicle traffic a home business can generate rather than counting customers: SMC 23.42.050(G) allows no more than three vehicles tied to the business on site at once, parking is confined to spaces already legal on the lot, and any spillover, including traffic-related noise, can't cross the property line.
C. Parking of vehicles associated with the home occupation is permitted anywhere that parking is permitted on the lot, including required parking spaces. ... G. A maximum of three passenger vehicles, vans, and similar vehicles, associated with the home occupation, each not exceeding a gross vehicle weight of 10,000 pounds are permitted to be at the home occupation site, independent of commercial deliveries and pickups. ... H. The home occupation shall be conducted so that noise, odor, smoke, dust, light and glare, and electrical interference and other similar types of spillover effects do not create negative impacts at or beyond the property line of the lot where the home occupation is located.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Municipal Code: Supplement 44 Update 1).
Full Breakdown
050 regulates the vehicle and impact footprint that home-business traffic creates. Subsection C confines parking: "Parking of vehicles associated with the home occupation is permitted anywhere that parking is permitted on the lot, including required parking spaces", meaning a home business can't create new parking areas or push cars onto the street beyond what zoning already allows for the house. E. " Because home occupations are permitted outright rather than conditionally, there's no separate traffic study or hearing, SDCI enforces these numeric and impact standards after the fact, typically once a neighbor complains about cars or noise tied to the business.
Violations & Fines
A home business that draws more than three associated vehicles, spills parking onto the street beyond what's already legal, or lets traffic-related noise or exhaust cross the property line is out of compliance with SMC 23.42.050. SDCI can issue a notice of violation under SMC 23.90.006, and the operator faces a civil penalty of up to $150 per day for the first ten days and up to $500 per day after that under SMC 23.90.018.A.
Frequently Asked Questions
Does Seattle limit how many customers can visit a home business?
Can a home business use street parking for customers?
What vehicle limit applies to a Seattle home business?
Sources & Official References
Other rules in Seattle
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Customer Traffic Restrictions in Nearby Cities
How other cities in King County handle customer traffic restrictions.