Restaurant and Commercial Kitchen Build-Outs: Health Dept and Building Permits
A restaurant build-out is one of the few commercial project types that requires two full, largely independent plan reviews — the building department and the local health department — both of which have to be satisfied before a certificate of occupancy is issued. Permit drawings for a commercial kitchen have to be built with both reviewers in mind from the first floor plan sketch, not sequenced as an afterthought.
The health department review, in parallel with building
Health departments review restaurant plans against food-service sanitation codes, focused on handwashing sink placement, three-compartment sink requirements, food storage separation, and floor and wall finish materials rated for food-service cleanability. This review typically runs alongside — not after — the building department's structural and life-safety review, and both need consistent, matching drawings.
Kitchen exhaust hoods and fire suppression
Commercial cooking equipment producing grease-laden vapors requires a Type I exhaust hood with an integrated fire suppression system, sized and detailed as its own mechanical submittal within the permit drawings. Duct clearance to combustibles, makeup air balancing, and the fire suppression system's coverage of each piece of equipment all need to be documented — this is one of the most frequently under-scoped items in restaurant build-outs prepared without commercial kitchen experience.
Grease interceptors
Most jurisdictions require a grease interceptor (or grease trap) on any drain line serving food-preparation sinks or dishwashing equipment, sized based on the kitchen's projected wastewater flow. Interceptor sizing and location need to appear on the plumbing plan, and undersizing one of the most common reasons a restaurant permit gets a health department correction after otherwise passing building review.
Finish material requirements
Health departments typically require smooth, non-absorbent, cleanable surfaces in food-preparation areas — specific floor, wall, and ceiling finish materials, coved base at the floor-wall junction, and equipment mounted or sealed to allow cleaning underneath. These finish requirements need explicit callouts on the permit drawings' finish schedule, not a generic "per health code" note.
- Quarry tile or equivalent non-absorbent flooring in food-prep zones, with coved base
- Smooth, washable wall finish (FRP panels or equivalent) behind cooking and prep areas
- Handwashing sinks placed within required distance of food-handling stations
- Equipment layout allowing required clearance for cleaning and service access
Sequencing both reviews efficiently
The most efficient path is submitting to both departments simultaneously with drawings that already reflect both code sets, rather than getting building department approval first and discovering health department corrections afterward — a sequence that can add weeks to an already lease-constrained project.
A commercial kitchen floor plan showing cooking equipment under a Type I exhaust hood outline, a three-compartment sink, a grease interceptor symbol on the floor drain line, and finish material hatching on the floor — conveys the health-department-driven detail in restaurant permit drawings.
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