Straight answers to the design questions that come up when building out a commercial kitchen, covering how big it needs to be, what floors and walls to use, drainage and ventilation basics, and rough costs. Material and code requirements vary by jurisdiction, so treat these as guidance and confirm specifics with your local health department and building plan review.
There is no universal figure, but many full-service restaurant kitchens fall somewhere around a third of the total floor area, often in the range of a few hundred to over a thousand square feet depending on menu and volume. Smaller footprints work for limited menus. The better approach is to size from your seat count and menu rather than a flat number; see our size requirements guide.
Averages vary widely by concept, but commonly cited ranges put full-service restaurant kitchens at roughly a few hundred to around a thousand-plus square feet, with a frequent planning benchmark of about a third of total restaurant area going to back-of-house. Fast-casual and delivery-only kitchens run smaller. Because the range is broad, size to your menu and equipment list rather than to an average.
There is rarely a single hard minimum in square feet; instead, codes require enough space to fit required equipment, hand sinks, a three-compartment or dishwasher, storage, and code-mandated clearances and exits. Some very small kitchens operate successfully, but they need tight menus and multi-function equipment. Your real floor is whatever fits the required fixtures with legal aisles, so confirm through local plan review.
Quite small, if the menu is limited and equipment does double duty, some food-service kitchens run in the low hundreds of square feet or less. The constraints are fitting required sinks, storage, ventilation, and equipment while keeping legal aisle and exit clearances. Cramming a space hurts workflow and safety, so plan carefully. Our commercial kitchen size requirements guide covers how compact a workable kitchen can be.
A common planning heuristic is roughly 5 square feet of kitchen and back-of-house per dining seat, though scratch-cooking and broad menus need more, and limited menus less. Use it only as a starting estimate, then check against your actual equipment list and workflow. Our kitchen size and seating planner helps translate a target seat count into an approximate kitchen footprint.
Work from the menu outward: list every dish, the equipment and prep each requires, and expected peak volume, then group that equipment into stations and add storage, warewashing, and clear aisles. Sum the footprints and clearances to get a working area, and allow room for growth. Menu-driven sizing beats generic square-foot rules. Our seating and kitchen planner gives a quick first estimate.
Costs vary enormously with size, location, equipment, and how much construction is needed, ranging from tens of thousands for a light buildout to several hundred thousand dollars for a full new kitchen with hoods, refrigeration, and finishes. Ventilation, refrigeration, and utility work are often the biggest line items. Scope your equipment first with our required equipment guide, then get local contractor bids for accurate numbers.
The most common durable choices are quarry tile and seamless resinous (epoxy or urethane) systems, both of which resist grease, moisture, and heavy traffic and can be made slip-resistant. Whatever you choose, it should be non-absorbent, cleanable, coved at the wall base, and paired with proper drainage. Health codes specify smooth, durable, non-porous floors in food areas, so confirm accepted materials through local requirements.
Commercial kitchen floors are typically quarry tile, seamless epoxy or urethane resin, or sometimes sealed concrete or commercial sheet flooring, all chosen because they are non-absorbent, grease-resistant, durable, and easy to sanitize. They are usually finished with a coved base where floor meets wall to eliminate crevices, and paired with floor drains. Absorbent materials like wood, carpet, or standard laminate are not acceptable in food-prep areas.
Quarry tile is a dense, unglazed fired-clay tile widely used in commercial kitchens because it is hard, grease- and moisture-resistant, and long-lasting. Installed with an abrasive grit for slip resistance and set in appropriate grout, it stands up to heavy carts and hot spills. It is coved at the walls and used with drains. The main downsides are cost, hardness underfoot, and grout that needs proper sealing and cleaning.
Resinous flooring is a seamless coating of epoxy or urethane troweled or poured over a prepared concrete slab to form a continuous, non-porous surface. Its lack of seams makes it very sanitary and easy to clean, and slip-resistant aggregate can be added. Urethane systems handle thermal shock and heavy grease well. Proper installation and slab prep are critical, since failures usually trace back to moisture or a poorly prepped base.
Pricing depends on the system, slab condition, and square footage, but quarry tile and seamless resinous floors generally cost more per square foot than basic residential flooring because of materials, coving, drains, and skilled installation. Surface prep and drainage add to the total. Treat any figure as a range and get local bids, since labor and slab conditions drive the number more than the material alone.
Both quarry tile and resinous systems start with a sound, clean, properly sloped slab. Tile is set in mortar with grout and a coved base; resinous floors need the slab shot-blasted or ground, primed, then built up in coats with aggregate and a topcoat. Floor drains and slope to drain are integrated during the work. Because prep and moisture control are decisive, most operators use experienced commercial flooring installers.
Most do. Health and plumbing codes typically require floor drains in wet and cleanable areas, dish rooms, near cooking lines, walk-ins, and mop areas, with the floor sloped toward them so wash-down water and spills drain away. Certain equipment also needs indirect drains with air gaps. Exact requirements and drain types vary by jurisdiction, so confirm placement and count with your plumber and local plan review.
A cove base is a curved, sealed transition where the floor meets the wall, replacing the sharp 90-degree corner that traps dirt and grease. Health codes commonly require coving in food-prep and warewashing areas because the rounded, sealed junction has no crevice and can be cleaned and sanitized easily. It is formed with quarry-tile cove pieces or built into a resinous floor system as part of installation.
Anti-fatigue and anti-slip floor mats are not usually mandated by code, but they are widely used for staff safety and comfort on hard, wet floors and can support slip-resistance efforts under safety guidelines. Choose grease-resistant, drainage-style commercial mats that can be lifted and cleaned regularly, since mats left dirty become a sanitation problem. Check whether your insurer or local health rules address matting in wet areas.
FRP stands for fiberglass-reinforced plastic (or panel), a rigid, water-resistant sheet applied over wall substrates in commercial kitchens. Its smooth, non-absorbent surface resists moisture, grease, and impacts and wipes clean easily, which is why it is a go-to for meeting the washable, cleanable wall-finish requirements health codes expect in food-prep and warewashing areas. Panels come in large sheets installed with adhesive and sealed seams.
FRP panels are made of a polyester or plastic resin reinforced with glass fibers, producing a lightweight but tough, water-resistant sheet. The exposed face is smooth and often lightly textured, giving a cleanable, non-porous surface. They are typically mounted over moisture-resistant gypsum or other approved backing with adhesive and plastic trim, then sealed at seams and edges to keep water out of the wall assembly.
FRP is used as a durable, washable wall (and sometimes ceiling) finish in food-prep, cook-line, dish, and storage areas where walls must resist moisture, grease, and frequent cleaning. It protects the substrate, satisfies the smooth, non-absorbent, cleanable finish that health codes call for, and holds up to bumps from carts and equipment. It is popular because it is affordable, easy to install, and simple to sanitize.
FRP is installed over a smooth, moisture-resistant backing such as treated gypsum. Panels are cut to size, adhesive is troweled onto the wall (and sometimes the panel), and each sheet is pressed on with plastic division and corner trim between panels. Seams, edges, and trim are then sealed with silicone to keep moisture out. Fastener and sealant choices matter, so follow the manufacturer's specs and any code requirements.
FRP can be painted, but its slick, non-porous surface must be cleaned, degreased, and lightly scuff-sanded first, then primed with a bonding primer before applying a durable, washable topcoat such as an epoxy or acrylic enamel. Even done well, paint is less durable than the original finish and can chip in high-wear spots. In food areas, make sure the painted result still meets cleanable, non-toxic finish requirements.
Health codes generally require that walls in food-prep, cooking, and warewashing areas be smooth, durable, non-absorbent, and easily cleanable, light colors are often preferred to show soil. Common compliant finishes include FRP panels, stainless steel, sealed or epoxy-coated surfaces, and glazed tile. Rough, porous, or textured surfaces are not acceptable where splashes occur. Because specifics differ, confirm accepted materials with your local health authority.
Many jurisdictions want the smooth, cleanable finish to run the full height of walls in wet and food-prep areas, or at least well above splash and work levels, sometimes to the ceiling near dishwashing and cook lines. Requirements vary, so some areas may allow washable finish to a set height with a cleanable surface above. Confirm the required extent with your local health department during plan review.
Ceilings over food-prep and warewashing areas must be smooth, non-absorbent, and cleanable, so common choices are washable coated panels, sealed drywall, or vinyl-faced tiles rated for kitchens rather than standard fissured acoustic tile. Above cooking lines and in wet areas, moisture- and grease-resistant materials are expected. Because acceptable ceiling systems vary locally, verify what your jurisdiction allows before ordering, especially near hoods and dish machines.
Kitchens with grease- or smoke-producing equipment need a Type I exhaust hood over the cook line, with ductwork to the exterior and matching make-up air to replace what is exhausted. Type II hoods handle heat and moisture from ovens, dishwashers, and steamers. Sizing depends on the equipment and hood style. Estimate exhaust volume with our hood CFM calculator, then have a mechanical professional confirm code compliance.
A commercial kitchen is designed and equipped for high-volume food service and built to health and safety codes: NSF-rated stainless equipment, commercial ventilation, multiple sinks including hand and warewashing sinks, cleanable FRP or tile walls, non-absorbent floors with drains, and grease management. It is inspected and permitted for public food service. The combination of code compliance, durable sanitary finishes, and workflow-driven design is what sets it apart from a home kitchen.
Health departments generally require food-contact equipment and surfaces to be certified to a recognized sanitation standard such as NSF, or equivalent, meaning they are made of smooth, non-toxic, cleanable, corrosion-resistant materials. This is why commercial kitchens use stainless steel and NSF-listed refrigeration, sinks, and worktables. Requirements can vary, so verify that your equipment carries an accepted certification and confirm specifics with your local inspector before purchase.
Codes typically set minimum light levels for different areas, brightest at food-prep and cooking stations, with lower levels acceptable in storage, and require shatter-resistant fixtures or protective shielding over food areas so broken glass cannot contaminate food. Fixtures should be cleanable and appropriate for a moist, greasy environment. Because required foot-candle levels and shielding rules vary, confirm lighting specifications with your local building and health authorities.
Yes. Wall areas behind and beside ranges, fryers, and broilers must be noncombustible and cleanable, commonly finished in stainless steel or another approved fire-resistant, grease-resistant material rather than ordinary FRP or drywall, which can be combustible or degrade under heat. Required clearances to combustibles are set by equipment listings and fire codes. Confirm the specific wall protection and clearances with your building and fire officials.