Home Business in Sammamish, WA (2026)
5 verified home business rules for Sammamish, Washington, sourced directly from the municipal code and official government pages.
Verified from official government sources
Zoning Restrictions
Sammamish allows home businesses in residential zones under SMC 21A.65.050. A Type 1 home business (no odors, no visible/audible activity) is permitted outright; a Type 2 business with limited odors or some visible activity requires a Conditional Use Permit. The business area is limited to 50% of the dwelling, with no more than three nonresident employees per property.
Sammamish Home Business Zoning Rules
Some RestrictionsSignage Rules
Sammamish home businesses may have one sign — freestanding, wall, monument, or A-frame — with a maximum area of 6 square feet, under SMC 21A.45.060. A Sign Permit Application is required. The single-sign, 6-square-foot limit keeps home-business signage consistent with residential neighborhood character.
Sammamish Home Business Signage Rules
Some RestrictionsCottage Food Operations
Sammamish defers to Washington's cottage food law. To sell homemade food, you need a Washington State Department of Agriculture (WSDA) Cottage Food Operation Permit (RCW 69.22; WAC 16-149), which allows up to $35,000 in annual sales of approved non-hazardous foods. Larger food operations require a commercial kitchen, a City building permit, and King County Health Department approval.
Sammamish Cottage Food / Home Kitchen Rules
Some RestrictionsHome Daycare
A home daycare is allowed as a home business in Sammamish, but rules vary by zone (R-4 vs R-12). A Daycare I (up to 12 adults or children in any 24-hour period) is permitted, while a Daycare II (more than 12) requires a Conditional Use Permit. Providers must also obtain a Washington DCYF family home child care license.
Sammamish Home Daycare Rules
Some RestrictionsHome Occupation Permits
A Type 1 home business in Sammamish needs no special land use permit but must meet SMC 21A.65.050 standards; a Type 2 business requires a Conditional Use Permit. Separately, every business operating in Sammamish — including home occupations — must hold a City business license obtained through Washington's joint Business License Service.
Sammamish Home Occupation Permits
Some RestrictionsLooking for King County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Sammamish city rules.
Home Business in King County →