Permitting is where first-time restaurant owners lose the most time — not because it's impossible, but because they start in the wrong order and design plans that were never going to pass. Here's how restaurant permitting actually works in King County, and how to keep it from eating your opening date.
The two tracks you're really running
A restaurant permit isn't one thing. You're running two review tracks, ideally at the same time:
- Health / food establishment — Public Health – Seattle & King County reviews your plans, then your food-establishment permit.
- Building — your city (Seattle, Bellevue, Redmond, Sammamish, etc.) or King County for unincorporated areas reviews building, mechanical, plumbing, and electrical.
Step 1 — Confirm use and occupancy before you sign
Make sure the space is zoned for a restaurant and that a change of use won't trigger expensive upgrades. This belongs before the lease, not after.
Step 2 — Get plans drawn to code
Your architect and contractor produce the plan set: floor plan, equipment schedule, finish schedule, plumbing and mechanical, hood and make-up air, and ADA compliance. This is where an experienced restaurant contractor earns their keep — designing to pass the first time.
Step 3 — Submit health plan review
Public Health reviews finishes, handwashing, warewashing (the three-compartment sink), refrigeration, and food-flow. Approvable plans move fast; vague ones bounce back.
Step 4 — Submit building permits (in parallel)
Building, mechanical, plumbing, and electrical review happen through your local jurisdiction. Running this alongside health review — not after — is how you compress the timeline.
Step 5 — Build, inspect, and open
During construction you'll pass rough-in and final inspections for each trade, plus a final health inspection before your food permit is issued. Then you're clear to open.
The rejections that cost first-timers months
- Missing or non-compliant finish schedule (floors, walls, ceilings in food areas).
- Inadequate handwashing sinks or an undersized three-compartment sink.
- Hood and make-up air problems, or grease interceptor sizing.
- ADA and restroom counts that don't match occupancy.
None of these are surprises to a contractor who has opened restaurants — they're the checklist. We handle permits and plan review as part of the build so approvals land the first time. If you're still budgeting, our build-out cost guide shows how permitting fits the overall number.
Planning a restaurant, café or bar?
Talk to a contractor who has actually opened restaurants. The first consultation is free.
Book a Free ConsultationFrequently asked questions
What permits do I need to open a restaurant in King County?
At a minimum you'll need a health-department plan review and food-establishment permit through Public Health – Seattle & King County, plus building, mechanical, plumbing, and electrical permits from your city (or the county in unincorporated areas). A sign permit and a business license round it out.
How long does restaurant permitting take in King County?
Plan on several weeks to a few months. Health plan review and building permit review often run in parallel but each can take weeks, and every correction cycle adds time. Starting with code-compliant plans is the single biggest way to keep it short.
Why do restaurant permits get rejected?
The usual culprits: missing or non-compliant finish schedules, inadequate handwashing or three-compartment sinks, hood and make-up air issues, grease interceptor sizing, and ADA/restroom problems. These are exactly the things an experienced restaurant contractor designs in from the start.