Fitness Studio Permit Requirements in Seattle, WA

1. EIN (Employer Identification Number)

   Required for LLCs, corporations, and any business with employees. Free from the IRS. You will need this to open a business bank account, hire staff, and file taxes.

   Official government source

   Free·Immediate (online application)

   Free

   Immediate (online application)

2. ADA Compliance

   Fitness studios open to the public must comply with the Americans with Disabilities Act (ADA). This includes accessible entrances, restrooms, parking, and accessible fitness equipment (where feasible). Compliance is enforced by the Department of Justice.

   Official government source

   Cost of accessible design (varies)·Required before opening

   Cost of accessible design (varies)

   Required before opening

1. Washington Secretary of State — Business Registration

   There is no state fitness license in Washington. To form an LLC or corporation, file a Certificate of Formation (LLC/PLLC) or Articles of Incorporation with the Secretary of State via the CCFS portal. Sole proprietors and general partnerships need no SOS filing. Separately, obtain a WA Business License from the Department of Revenue.

   Official government source

   $180 (LLC Certificate of Formation or profit-corporation Articles of Incorporation, online or by mail); $100 extra for expedited service·1–2 weeks online

   $180 (LLC Certificate of Formation or profit-corporation Articles of Incorporation, online or by mail); $100 extra for expedited service

   1–2 weeks online

2. Washington — Sales Tax / Business Tax Registration

   Fitness memberships and services may be subject to retail sales tax in Washington, and gross income is subject to Business & Occupation tax. Register with the Washington Department of Revenue through the Business License Application to determine your obligations. In Seattle the combined sales tax rate is 10.55% - 6.5% state plus 4.05% local, location code 1726 - for the quarter beginning October 1, 2026; rates change quarterly, so confirm with DOR's Tax Rate Lookup Tool. Merchandise and prepared items such as protein shakes sold on site are taxable.

   Official government source

   $50 Business License Application processing fee to open or reopen a business; $0 to add a location; $10 for any other change (hiring employees, registering a trade name, adding endorsements to an existing location); $5 annual renewal processing fee. Endorsement fees are charged in addition.·About 10 business days for online applications, plus another 2-3 weeks if city or state endorsements need approval; mailed applications can take up to 6 weeks.

   $50 Business License Application processing fee to open or reopen a business; $0 to add a location; $10 for any other change (hiring employees, registering a trade name, adding endorsements to an existing location); $5 annual renewal processing fee. Endorsement fees are charged in addition.

   About 10 business days for online applications, plus another 2-3 weeks if city or state endorsements need approval; mailed applications can take up to 6 weeks.

3. Washington — Personal Trainer / Group Fitness Instructor Certifications

   While Washington does not license personal trainers or fitness instructors at the state level, reputable fitness studios require staff to hold certifications from accredited organizations (NASM, ACE, ACSM, ISSA, or NSCA). Most studios also require CPR/AED certification for all fitness staff.

   Official government source

   $400–$1,500 per trainer (exam and certification)·4–12 weeks (self-study and exam)

   $400–$1,500 per trainer (exam and certification)

   4–12 weeks (self-study and exam)

1. Seattle — Business / Occupational License

   All businesses operating within Seattle must obtain a Business License Tax Certificate from Seattle City Finance. Fitness studios operating a commercial space must obtain it and renew annually. You may also need a Certificate of Occupancy from the Seattle Department of Construction & Inspections before opening.

   Official government source

   $73/year if your Seattle taxable revenue is under $20,000, $147 for $20,000-$499,999.99, $667 for $500,000-$1,999,999.99, $1,604 for $2 million-$5 million, and $3,210 for more than $5 million (2026 fee schedule), plus $10 per branch location. Businesses that start July 1 or later pay half the first-year fee.·You can usually print the certificate within 2-3 business days after your payment processes.

   $73/year if your Seattle taxable revenue is under $20,000, $147 for $20,000-$499,999.99, $667 for $500,000-$1,999,999.99, $1,604 for $2 million-$5 million, and $3,210 for more than $5 million (2026 fee schedule), plus $10 per branch location. Businesses that start July 1 or later pay half the first-year fee.

   You can usually print the certificate within 2-3 business days after your payment processes.

2. Seattle / King County — Building Permit & Certificate of Occupancy

   If you are building out, renovating, or changing the use of a commercial space for a fitness studio, you need building permits from the Seattle Department of Construction & Inspections (SDCI). A Certificate of Occupancy is required when the use of the space changes, obtained through SDCI's Construction Permit - Establishing Use. Electrical, plumbing, and fire safety inspections are typically required. King County only permits work in unincorporated areas, not inside Seattle.

   Official government source

   SDCI fees are based on the value of construction plus hourly review at the SDCI hourly rate of $292 (2026 Fee Subtitle); land use review is $551 an hour. Establishing use for the record costs 1.5 times the $292 base fee, about $438. A technology fee is added to all fees, and roughly 75 percent is due at intake.·SDCI can usually take in a complete application within 2-3 weeks; initial review targets are 2-4 weeks for simple or medium projects and 8-12 weeks for complex ones, with corrections adding another round.

   SDCI fees are based on the value of construction plus hourly review at the SDCI hourly rate of $292 (2026 Fee Subtitle); land use review is $551 an hour. Establishing use for the record costs 1.5 times the $292 base fee, about $438. A technology fee is added to all fees, and roughly 75 percent is due at intake.

   SDCI can usually take in a complete application within 2-3 weeks; initial review targets are 2-4 weeks for simple or medium projects and 8-12 weeks for complex ones, with corrections adding another round.

3. Seattle Fire Marshal — Assembly Occupancy Inspection

   Fitness studios classified as assembly occupancies must comply with the Seattle Fire Code. Seattle Fire issues an annual place-of-assembly permit; an inspector schedules a site visit to verify occupant load, exits and egress paths, fire extinguishers, alarms, emergency lighting, and sprinklers before the permit is issued. Applications for an assembly permit require the SDCI Certificate of Occupancy. The permit renews annually and SFD invoices you at least 30 days before expiration.

   Official government source

   Seattle Fire annual assembly occupancy permit fees (base and renewal are the same): $571 for occupant load 100-199; $715 for 200-999; $854 for 1,000-2,999; $1,456 for 3,000-9,999; $2,500 for 10,000-19,999; $3,327 for 20,000 and over. Non-profit assembly permits are no fee. A space with an occupant load under 100 does not need an assembly permit. Late renewal fees apply.·An SFD inspector contacts you to schedule the site review; the permit is mailed after the application is approved and any additional fees are paid. Renewal invoices are sent at least 30 days before expiration, with a 90-day grace period plus late fees before cancellation.

   Seattle Fire annual assembly occupancy permit fees (base and renewal are the same): $571 for occupant load 100-199; $715 for 200-999; $854 for 1,000-2,999; $1,456 for 3,000-9,999; $2,500 for 10,000-19,999; $3,327 for 20,000 and over. Non-profit assembly permits are no fee. A space with an occupant load under 100 does not need an assembly permit. Late renewal fees apply.

   An SFD inspector contacts you to schedule the site review; the permit is mailed after the application is approved and any additional fees are paid. Renewal invoices are sent at least 30 days before expiration, with a 90-day grace period plus late fees before cancellation.

Official Sources

• Washington Secretary of State
• Seattle Business Licensing
• ADA.gov — Fitness Facilities

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