What permits do you need to open a salon or barber in King County?

Salon / Cosmetology Licensing — State License Applies (King County)

Salon and cosmetology licensing is a Washington State Department of Licensing function, recorded at the state layer, and the County's business-license list names no salon license, so this record carries no fee at the county level. The Board of Health's only cosmetology chapter, Title R18, covers ear-piercing sanitation standards alone, with no permit or fee, and neither the County's current business-license list nor Title 6 has a cosmetology, barber or nail license. Two County licenses can still reach a salon in the unincorporated area: the public bathhouse license if it offers baths, saunas or hot tubs, and the massage license if it provides massage outside a state-licensed cosmetologist's authorized scope of practice (see the massage and bathhouse record). Ordinary building, sign and, in Seattle, Clyde Hill and unincorporated King County, plumbing permits apply to a salon's premises as they would to any commercial space.

Massage Business / Public Bathhouse License

In unincorporated King County a massage business, or any place furnishing baths of any kind — including Finnish, Russian, Swedish and Turkish baths, saunas, steam rooms and hot tubs at a gym or salon, but not an ordinary tub or shower where no attendant is required — needs a $150-a-year public bathhouse or massage business license expiring each November 30, valid for one location; individual massage practitioners pay $50. Per the County's own license page, businesses of the kind that need this license include hot tub establishments, sauna establishments, beauty salons and athletic clubs offering bath facilities; the code itself exempts barbers and cosmetologists from needing the license for massage practiced within their state-authorized scope of practice, but sets no exemption for a state-licensed massage practitioner who owns their own massage business, so the $50 practitioner fee still applies unless the business itself qualifies for the cosmetologist exemption. An ordinary hair, nail or skin salon without bath facilities and without massage service beyond a cosmetologist's authorized scope does not need a license under this chapter. Applications are inspected by the Sheriff's Office and Permitting. This Title 6 fee is fixed in the code and is not affected by the Local Services fee schedule that expires January 1, 2027.

Salon or Shop Location License

The premises license runs on a different clock from the people in it: $121 every year for the location, against $35 to apply and $66 to renew every two years for a cosmetologist, barber, manicurist or esthetician. Conflating the two is the standard error. A mobile unit and a personal services license cost the same $121; a school is $330. There is no separate booth-rental credential — an operator leasing space must hold both an operator license and a salon license for that specific location — and a business with branches needs a separate license for each. Late renewal adds $60. The license does not transfer, so a change of ownership means a new application.

Shared with other businesses in King County

• Fire Code Operational Permit (annual, unincorporated King County) — King County Fire Marshal's Office (Permitting Division), with delegated fire districts for operational-permit inspection, $171 per code item, initial permit; renewal $114 per item; building occupancy inspection $419 per building per site visit (2026), annual. Also required for restaurants, retail stores, childcare centres, fitness studios, auto repair shops and veterinary clinics; what it involves is set out on the retail stores page.
• Pet Grooming Service Operating Permit — Public Health – Seattle & King County, Environmental Health Services (pet business, water recreation, on-site sewage, and plumbing & gas piping programs), $281 a year per location (2026); the 2026 sheet prices a mobile grooming unit at a flat $281, while the Board of Health Code (2024) prices a mobile unit at $270 for the first vehicle plus $270 for each additional vehicle, annual. Also required for veterinary clinics; what it involves is set out on the veterinary clinics page.
• Conditional Use Permit — King County Department of Local Services, Permitting Division, $6,487–$18,106 per application by category: residential or home industry $6,487; commercial $13,266; industrial, institutional or other $18,106 (2026), one-time. Also required for restaurants, retail stores, childcare centres, fitness studios, auto repair shops and veterinary clinics; what it involves is set out on the fitness studios page.
• Home Occupation — Allowed Under Zoning Standards (King County) — King County Department of Local Services, Permitting Division, No fee, not applicable. Also required for retail stores, contractors and trades, fitness studios and childcare centres; what it involves is set out on the contractors and trades page.
• Zoning Variance — King County Department of Local Services, Permitting Division, $13,266 per variance review (2026); extension of approval $483, one-time. Also required for restaurants, retail stores, childcare centres, fitness studios, auto repair shops and veterinary clinics; what it involves is set out on the auto repair shops page.