Home Business Rules in Seattle, WA (2026)

In Seattle, WA, home-based businesses are permitted subject to specific rules designed to preserve residential character while allowing residents to run legitimate businesses from their homes. No city permit is required, though deed restrictions or state licensing may apply. The local building department or local planning department handles home occupation applications and enforcement. Regulations generally prohibit on-site employees, customer visits, and any external evidence of business activity. Below you will find the current permit requirements, restrictions, prohibited business types, and cottage food law provisions for Seattle.

Permit Requirements

No city permit is required. No city permit application or fee is required to operate a home-based business in Seattle under current regulations. However, state professional licensing requirements still apply (contractors, real estate agents, cosmetologists, etc.). Check your property's deed restrictions — many Seattle neighborhoods have private deed restrictions that prohibit commercial activity in residential areas regardless of city rules.

Operating Restrictions

Home Business Restrictions in Seattle: 1. The occupation is clearly incidental to the use of the dwelling unit as a dwelling. 2. No outdoor storage is permitted in connection with a home occupation. Violations of home occupation rules can result in complaints from neighbors, code enforcement investigations, permit revocation, and daily fines.

• •The occupation is clearly incidental to the use of the dwelling unit as a dwelling. · Verified July 14, 2026 · Source
• •No customers or clients may visit the home occupation
• •No employees who are not residents of the dwelling may work on premises
• •No external evidence of the home occupation visible from the street
• •No outdoor storage is permitted in connection with a home occupation. · Verified July 14, 2026 · Source
• •Business activity limited to no more than one room or 25% of floor area, whichever is less
• •The home occupation must not create noise, odor, smoke, dust, light, glare, or electrical-interference spillover effects that cause negative impacts at or beyond the property line.
• •No commercial vehicles (over 10,000 lb GVW) stored at residence

Cottage Food Law

Frequently Asked Questions