Answers · Commissary & shared kitchens

Commercial Kitchen Requirements & Licensing Questions & Answers

What defines a commercial kitchen and the equipment, sinks, ventilation, permits, and licensing it needs, plus how requirements differ from state to state.
Plain-English answers to common questions. Educational, not legal advice — confirm specifics with your local authority.

Any kitchen used to make food for sale must meet commercial and health-code standards, whether it is your own space, a shared kitchen, or a home conversion. These answers explain what defines a commercial kitchen, the equipment and licensing typically required, and how rules differ by state. Requirements vary a lot by jurisdiction, so always confirm with your local health department.

What are the requirements for a commercial kitchen?

While specifics differ by jurisdiction, commercial kitchens generally must have commercial-grade, often NSF-certified equipment; adequate refrigeration; a three-compartment sink for warewashing plus separate handwashing sinks (and often a mop or utility sink); proper ventilation and a hood over cooking equipment; cleanable floors, walls, and surfaces; hot and cold running water; grease management; and pest control. You will also need the right permits and licenses. Because codes vary widely, confirm exact requirements with your local health department before building or renting.

What are the regulations for a commercial kitchen?

Commercial kitchens are regulated mainly by state and local health departments (following the FDA Food Code as a model), plus building, fire, plumbing, and zoning codes. Rules cover food storage and temperatures, sanitation and warewashing, handwashing, ventilation, equipment standards, water and waste, and staff food-safety certification. You typically undergo plan review before opening and periodic inspections afterward. Requirements and how strictly they are applied vary by state and county, so check with your local authorities before you start.

What counts as a commercial kitchen?

A commercial kitchen is a facility licensed and inspected for preparing food to sell to the public, built to health-code standards rather than residential ones. Key traits: commercial equipment, proper sinks and handwashing, ventilation, cleanable surfaces, and the required permits. A home kitchen generally does not qualify unless it is separately built and licensed as commercial, or you sell only under limited cottage-food rules. What officially counts depends on your local health department's definitions, which vary by market, so verify locally.

What are the requirements for a commercial kitchen in Texas?

In Texas, commercial kitchens follow the Texas Food Establishment Rules (based on the FDA Food Code), enforced by the state and by local health departments. Expect requirements for commercial equipment, warewashing and handwashing sinks, refrigeration and temperature control, ventilation, approved water and waste handling, and a certified food manager. You will need a food establishment permit and to pass inspection; some areas require plan review first. Details differ by city and county, so confirm with your local health department.

What are the requirements for a commercial kitchen in Michigan?

Michigan regulates food establishments under the Michigan Food Law and the FDA Food Code, enforced by local health departments. Commercial kitchens generally need commercial equipment, three-compartment and handwashing sinks, proper refrigeration and hot water, ventilation, cleanable surfaces, and safe water and waste systems, plus a licensed food establishment and a certified food-safety manager. Plan review and inspection are typically required before opening. Because local health departments administer the rules, confirm the exact requirements for your county.

What are the requirements for a commercial kitchen in Wisconsin?

Wisconsin licenses food establishments through the state Department of Agriculture, Trade and Consumer Protection or agent local health departments, following the FDA Food Code. Commercial kitchens generally need commercial equipment, warewashing and handwashing sinks, adequate refrigeration and hot water, ventilation, cleanable finishes, and approved water and waste handling, plus the proper license and food-safety-certified staff. Plan review and inspection usually apply before opening. Confirm specifics with your local or state licensing authority, since details vary.

Do commercial kitchen requirements vary by state?

Yes, considerably. Most states base their rules on the FDA Food Code, but each adopts its own version, and enforcement often happens at the county or city level, so requirements for equipment, sinks, ventilation, permits, and certifications can differ from one jurisdiction to the next. Even neighboring counties may interpret rules differently. Never assume another area's rules apply to yours. Always confirm the exact requirements with the health department that will license and inspect your specific location.

What is a commercial kitchen license?

A commercial kitchen license (often called a food establishment permit) is the health-department approval that legally allows a facility to prepare food for sale. Getting one typically involves submitting plans, meeting equipment and sanitation standards, passing an inspection, and often having a certified food manager on staff. It must usually be renewed periodically. When you rent a shared kitchen, the facility holds this license, but you generally still need your own business and food permits. Requirements vary by market.

How do I get a commercial kitchen license?

Typically you register your business; contact your local health department; submit kitchen plans for review; build or set up to code; schedule and pass a health inspection; complete required food-safety certification; and pay the permit fees. You may also need building, fire, and zoning sign-offs. The process can take weeks to months. Renting an already-licensed shared kitchen skips much of this. Exact steps, fees, and timelines vary by market, so start with your local health department early.

How much does a commercial kitchen license cost?

A food establishment permit commonly costs about $100 to $1,000 or more per year, with plan-review and initial application fees sometimes adding several hundred more. Larger or higher-risk operations pay more. Related costs include food-manager certification, a business license, and inspection fees. These are separate from construction or rent. Renting a licensed shared kitchen avoids the facility permit, though you still need your own licenses. Fees vary widely by jurisdiction, so check with your local health department for exact amounts.

Do I need a hood and ventilation in a commercial kitchen?

If you cook with equipment that produces grease-laden vapor or smoke, fryers, griddles, ranges, charbroilers, you almost always need a commercial exhaust hood with a fire-suppression system, per NFPA 96 and local codes. Some low-heat or non-grease equipment may be exempt. Ventilation also requires make-up air to replace what the hood exhausts. Hood requirements are a major cost and a common inspection focus. Whether your specific equipment needs a hood varies by code, so confirm with your local authorities.

Does a commercial kitchen need a grease trap?

Usually yes. Most jurisdictions require a grease trap or interceptor to keep fats, oils, and grease out of the sewer system, especially for kitchens with fryers, woks, or heavy warewashing. The required size depends on your fixtures and flow. Shared kitchens and commissaries already have compliant grease management, one reason mobile units use them. Grease-trap rules, sizing, and cleaning schedules vary by local plumbing and sewer codes, so confirm requirements with your local authority before building.

What sinks are required in a commercial kitchen?

Most codes require a three-compartment sink for washing, rinsing, and sanitizing wares; one or more dedicated handwashing sinks near food-prep and warewashing areas; and often a separate mop or utility sink for cleaning. Kitchens that prep produce may also need a food-prep sink. Sinks generally must drain properly (often through an air gap) and have hot and cold water. Exact sink requirements depend on your menu and local code, so confirm with your local health department.

Does commercial kitchen equipment need to be NSF certified?

Many health departments require, or strongly prefer, that commercial food equipment be NSF-certified (or certified to an equivalent standard), meaning it is built to be cleanable, durable, and food-safe. This is why residential appliances often are not accepted in licensed kitchens. NSF certification frequently comes up during plan review and inspection. Not every item must be certified, but food-contact and major equipment usually should be. Because rules vary by jurisdiction, confirm which equipment must be certified with your local health department.

How big does a commercial kitchen need to be?

There is no single required size; it depends on your menu, volume, and equipment. Small commercial kitchens can operate in a few hundred square feet, while full-service restaurant kitchens often run 500 to 1,500 or more square feet, and roughly a third of a restaurant's floor space is a common rule of thumb. What matters for code is having room for required equipment, sinks, safe workflow, and storage, not a minimum square footage. Space needs and any local minimums vary by market.

How do I size a commercial kitchen?

Size it around your menu and peak volume: list the cooking, prep, refrigeration, warewashing, and storage equipment you need, then lay it out for a safe, efficient workflow with room for staff, required sinks, and aisles. Plan storage (dry, cold, frozen) for your inventory and deliveries. Over-tight kitchens slow service and fail inspections; over-large ones waste rent. Many operators work with a kitchen designer. The right size varies by concept and volume, and any code minimums vary by market.

Can I turn my home kitchen into a commercial kitchen?

Sometimes, but it is difficult. Most home kitchens do not meet commercial code, and many jurisdictions prohibit selling food made in a residential kitchen except under limited cottage-food laws. Options include building a separate, licensed commercial kitchen at your home (subject to zoning and inspection) or renting a shared commercial kitchen instead. Cottage-food rules let you sell certain low-risk foods from home within limits; see cottage food laws by state. What is allowed varies by state and county.

What are the flooring and wall requirements for a commercial kitchen?

Commercial kitchens generally need smooth, durable, non-absorbent, easily cleanable surfaces, think sealed concrete, quarry tile, or commercial vinyl flooring, often with coved edges where floor meets wall, and washable wall finishes like FRP panels or stainless. Painted or porous residential surfaces usually are not acceptable in food-prep areas. These standards make sanitation and pest control easier and are checked at inspection. Exact material and finish requirements vary by local code, so confirm with your health department.

Do I need a certified food manager for a commercial kitchen?

In most jurisdictions, yes, food establishments must have at least one Certified Food Protection Manager (for example, ServSafe-certified) on staff, and other employees often need a food handler card. The manager certification demonstrates knowledge of safe food handling, temperatures, and sanitation. Requirements for how many certified managers and which programs count vary by state and county. Confirm your local rules and get certified before opening. Renting a shared kitchen does not remove your own certification requirements.

Does a commercial kitchen need a health inspection?

Yes. Health departments inspect commercial kitchens before opening (often after a plan review) and periodically afterward, checking food temperatures, sanitation, handwashing, equipment, pest control, and more. Passing inspection is required to get and keep your permit. Shared kitchens and commissaries are inspected as facilities, but your operation within them can also be evaluated. Inspection frequency and scoring differ by jurisdiction. Prepare by knowing your local code, since standards vary by market.

What permits do I need to open a commercial kitchen?

Common permits include a food establishment or health permit, a business license, building and possibly construction permits, fire-department approval (especially for hoods and suppression), plumbing permits (grease trap, backflow), and zoning sign-off; you will also need food-safety certification. Selling certain products, like packaged foods, may require extra approvals. The exact list and order depend on your location and menu; see commercial kitchen permits and licenses. Requirements and timelines vary by market.

What makes a home kitchen different from a commercial kitchen?

A commercial kitchen is built and licensed for high-volume food production and public sale, with commercial equipment, multiple code-compliant sinks, ventilation, cleanable surfaces, and inspections. A home kitchen uses residential appliances and finishes and is not designed or (usually) permitted for selling food, except limited cottage-food items. The differences are about food-safety capacity and legal approval, not just size. Whether a home kitchen can ever be used for sales depends on local cottage-food and licensing rules, which vary by market.

Does a commercial kitchen need a separate handwashing sink?

Yes, almost universally. Codes require dedicated handwashing sinks, separate from warewashing, food-prep, and mop sinks, located conveniently near food-handling areas and stocked with soap and paper towels. Using a prep or dish sink for handwashing is a common violation. The number and placement depend on your kitchen's size and layout. This is a core food-safety requirement checked at every inspection. Specifics on how many and where vary by local code, so confirm with your health department.

Can a shared or commissary kitchen satisfy my commercial kitchen requirement?

Often yes. Renting a licensed shared or commissary kitchen gives you access to a code-compliant, inspected facility, which is why food trucks, caterers, and packaged-food makers use them instead of building their own. The facility's license covers the space, but you still typically need your own business license, food permits, and food-safety certification. Confirm the facility meets the specific requirements for your operation, for example commissary rules for a truck. What qualifies varies by market, so verify locally.

How long does it take to get a commercial kitchen licensed and inspected?

It varies, but plan for several weeks to a few months. Plan review, construction or setup, scheduling inspections, and correcting any issues all take time, and permitting backlogs can add delays. Renting an already-licensed shared kitchen is far faster, sometimes you can start within days once your own licenses and insurance are in order. Start the process early and stay in close contact with your health department. Timelines vary widely by market and project complexity.

What happens if my commercial kitchen fails inspection?

A failed inspection usually means you must correct the cited violations by a deadline and pass a re-inspection before opening or continuing to operate; serious hazards can trigger immediate closure. Inspectors typically provide a report listing what to fix. Common issues include improper temperatures, missing handwashing supplies, poor sanitation, or unapproved equipment. Fixing root causes, not just symptoms, prevents repeat failures. Scoring systems and consequences vary by jurisdiction, so review your local health department's process.

Does a commercial kitchen need a mop sink or utility sink?

Most codes require a mop or utility (service) sink, separate from food and handwashing sinks, for filling and emptying mop buckets and cleaning tools, so wastewater does not contaminate food areas. It is usually a floor-level basin with hot and cold water. Skipping one, or using a food sink for cleaning, is a common violation. In a shared kitchen the facility provides this. Whether one is strictly required, and its specifications, varies by local code, so confirm with your health department.

What water and plumbing does a commercial kitchen require?

Commercial kitchens generally need an adequate supply of hot and cold potable water, properly sized drains, and fixtures that drain indirectly through an air gap where required (for example, prep sinks and ice machines). Codes commonly require backflow prevention to protect the water supply, a grease trap or interceptor, and often a floor drain or floor sinks. A commercial water heater must meet demand for warewashing and sanitizing. Exact plumbing requirements vary by local code, so confirm with your local authority before building.