Restaurants · October 22, 2026 · 5 min read

Building a restaurant in Orange County: the health department plan check.

Before a new or remodeled restaurant can be built in Orange County, the Health Care Agency has to approve the plans. What the review covers, how long it takes, and the kitchen details that most often cause delays.

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By the Builteck team

A restaurant build-out needs more approvals than most tenant improvements. Along with the city building permit and the fire department, the kitchen plans must be approved by the Orange County Health Care Agency (OCHCA), Environmental Health. Its Plan Check program reviews new food facilities, remodels and significant changes to a menu, operation or equipment.

The rule is simple: construction may not start until plans from all agencies have been reviewed and approved in writing. The health permit to operate is issued only after the final inspection.

How the review works

Submittal: under the county’s current construction guidelines, plans are submitted electronically with the review fee.
Review time: initial reviews are completed within 20 business days. Expedited reviews are generally completed within 10 business days.
Revisions: the fee includes three reviews, one initial review and two revisions. Approved plans are valid for up to one year.
Inspections: a preliminary inspection is highly recommended at about 80% completion, and a final inspection is required at 100%. Three construction inspections are included, and requests need at least 10 business days’ notice.

Kitchen details that are checked

The county’s guidelines are specific. A few of the items that shape the design and the budget:

Hand sinks: at least 8 by 8 inches and 5 inches deep, with a 6-inch backsplash, soap, paper towels and warm water.
Three-compartment sink: compartments of at least 18 by 18 by 12 inches (or 16 by 20 by 12), with drainboards, draining indirectly to a floor sink.
Food preparation sink: a bowl of at least 18 by 18 by 12 inches, also draining indirectly to a floor sink.
Floors: continuous, with a coved base of at least a 3/8-inch radius that runs at least 4 inches up the wall. Carpet, wood, VCT and luxury vinyl plank are not allowed in food areas.
Mop sink: at least 24 by 24 inches, in its own room or behind a partition at least 6 feet high.
Hot water: at least 120°F at all sinks except hand sinks, which need at least 100°F.

Hoods and make-up air

Cooking equipment used with raw animal products needs a Type I hood. The hood must extend at least 6 inches beyond the cooking surfaces, and its lower lip may be no more than 4 feet above them. UL-listed hoods need dedicated make-up air for at least 80% of the exhausted air; non-listed hoods need 100%. At final inspection, the hood must be balanced and ready for a smoke test, and an air balance report may be required.

Grease interceptors are a city matter

Grease rules are set by the city or sewer agency, so check them early. In Fountain Valley, for example, newly built food facilities must install a grease interceptor, and remodels can trigger one too, such as new under-slab plumbing in the food area or a 20% increase in kitchen or seating area. The minimum tank size there is 750 gallons, and no certificate of occupancy is issued until the device is installed, inspected and approved. An interceptor of that size often has to go in the parking lot or under the slab, which affects cost, schedule and landlord approvals.

What owners and tenants can do

Fix the menu and equipment list before the plans are drawn. Equipment drives sinks, floor sinks, hoods and power.
Ask the city about grease interceptor rules during lease negotiations, not after.
Allow at least four weeks for the first health review, plus time for corrections.
Schedule the 80% inspection, so problems are found while walls are still open.
Plan for permanent power and gas before the final inspection. Generators are not accepted.

This article is a general summary of published county and city guidance, not legal or code advice. Requirements vary by city, menu and scope; always confirm with OCHCA Plan Check and your local building department.

See our preconstruction for restaurant build-outs and commercial services, or request a bid for your project.

Photo: Ricardo Gomez Angel (opens in a new tab) on Unsplash