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 phone or in person at Interim City Hall, 6100 219th Street SW, Suite 200. Business license fees are due at the time the business license application is submitted.
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
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.
For information on permanent signage, please contact our Community & Economic Development Department at 425-744-6267. You may download a Temporary Signs Brochure here.