Business Licenses

Per Mountlake Terrace Municipal Code 5.05.020, a business is defined as “the carrying on of any form of activity for gain, profit or advantage, whether direct or indirect”.

In Mountlake Terrace, business licenses are required for all businesses, including home occupations, single-family residence rentals, apartment complexes, and businesses located outside the city, performing work within the city.

A business license application can be obtained by clicking on a link below or in person at Interim City Hall, 6100 219th Street SW, Suite 200. Business license hours are Monday through Friday, 8:00AM to 5:00PM. License fees are due at the time the business license application is submitted. We are unable to accept payment online or over the phone.

Business License Applications

Businesses Physically Located Within the City

Please call 425-744-6211 for information (including pricing) for these types of business license applications: 
 • Commercial Business License
 • Home Occupation Business License
 • Residential Rental Business License
 • Taxi Cab Driver’s Certificate Application

Businesses Physically Located Outside the City

Please contact City Hall at 425-776-1161 if estimated annual gross revenue will be under $12,000. 

For businesses physically located outside of the city and doing work within the city, you need the following application: 
• Non-Resident Business License

Business Tax Information

The City of Mountlake Terrace does not have a B&O tax. To obtain a UBI number or for tax information, visit the Washington State Department of Revenue website or contact them at 1-800-647-7706.
Signage Information
For information on permanent signage, please contact our Community & Economic Development Department at 425-744-6267.  You may download a Temporary Signs Brochure here.

Events for Businesses

Mountlake Terrace Business Association Meetings 
The association meets monthly on the third Wednesday at 11:30 a.m. for lunch with the formal meeting beginning about noon.

Most meetings are held at the Mountlake Terrace Library, Small Conference Room, 23300 58th Avenue West, but please check their website or Facebook page each month to confirm.