Hire a Miami-Dade Commercial Kitchen Ventilation and Grease Management Permit Expert 2026 — Type I Hoods, Ansul System, Grease Interceptor, and DERM Discharge Compliance

Order the Miami-Dade commercial kitchen ventilation permit, hire a Florida certified mechanical contractor, schedule the Ansul wet chemical fire suppression inspection, and buy the complete grease management package through Endless Life Design before your health department opening inspection or the DERM industrial waste discharge audit. Restaurant kitchens in Miami-Dade carry the highest concentration of overlapping permit requirements of any commercial occupancy — fire code, mechanical code, plumbing code, building code, environmental discharge, health department, and DBPR public food service license all converge on the same hood, the same grease trap, and the same makeup-air balance calculation.

INDEX 1. Type I and Type II Hood Classification and NFPA 96 Requirements 2. Exhaust CFM, Makeup Air, and Building Pressure Balance 3. Ansul, Range Guard, and Wet Chemical Fire Suppression Systems 4. Grease Interceptor, Trap Sizing, and Miami-Dade DERM Discharge 5. Gas Line Sizing, Shutoff Valves, and Combustion Air 6. Health Department Plan Review and DBPR Hotel and Restaurant Division 7. Hood Cleaning, Filter Maintenance, and Inspection Records 8. Government Accountability and Corrected Facts 9. Order Your Commercial Kitchen Permit Through Endless Life Design

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Type I and Type II Hood Classification and NFPA 96 Requirements

Type I hoods capture grease-laden vapors from cooking appliances — ranges, fryers, charbroilers, woks, salamanders, rotisseries — and must be constructed of 18 gauge stainless steel or 16 gauge galvanized steel, with continuous welded liquid-tight seams, listed grease filters or extractors, and a dedicated exhaust duct routed direct to atmosphere through the roof. Type II hoods capture steam, heat, and odor from non-grease appliances — dishwashers, steamers, ovens, kettles — and have lower duct construction requirements. NFPA 96 governs the entire commercial kitchen ventilation assembly, and Miami-Dade enforces NFPA 96 through the Florida Fire Prevention Code Chapter 27. Hire Endless Life Design to specify the right hood class because a Type II hood over a fryer is a code violation that closes the kitchen on opening inspection.

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Exhaust CFM, Makeup Air, and Building Pressure Balance

Hood exhaust CFM is calculated by the appliance heat output and the hood overhang, typically 200 to 400 CFM per linear foot of hood for medium-duty cooking and 300 to 600 CFM per linear foot for heavy-duty. Total exhaust above 400 CFM requires interlocked makeup air supplying 80% to 90% of the exhaust volume to prevent negative pressurization that pulls combustion gases from water heaters and furnace flues. Florida Energy Code Chapter 4 mandates the makeup air to be tempered when exhaust exceeds 5,000 CFM, adding $8,500 USD to $45,000 USD in equipment cost. The total system commissioning report is filed with the permit closeout, and three independent mechanical engineers should be retained because a single retirement strands the closeout.

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Ansul, Range Guard, and Wet Chemical Fire Suppression Systems

NFPA 96 and NFPA 17A require a wet chemical fire suppression system over every Type I hood, listed to UL 300 standards. Common systems include Ansul R-102, Range Guard, Pyro-Chem Kitchen Knight, and Amerex KP. The system covers every appliance under the hood, the hood plenum itself, and the exhaust duct collar. Activation triggers fuel shutoff to all gas appliances under the hood, makeup air shutoff, exhaust fan continued operation, and audible alarm to a monitoring station. Semi-annual inspection and tagging are required, $185 USD to $385 USD per visit, and a missed tag is grounds for fire-marshal closure. Schedule the Ansul installation and the semi-annual inspection contract through Endless Life Design.

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Grease Interceptor, Trap Sizing, and Miami-Dade DERM Discharge

Miami-Dade Department of Regulatory and Economic Resources, formerly DERM, regulates fats, oils, and grease discharge into the sanitary sewer under the Industrial Pretreatment Program. Restaurants must install a grease interceptor sized at 0.5 gallon per seat per day for full-service operations, with a minimum 750 gallon exterior interceptor for any establishment over 50 seats. Under-counter grease traps of 25 to 50 gallon capacity are permitted only for prep sinks and small operations under 25 seats. The pump-out frequency is quarterly minimum, with manifests submitted to DERM, and the discharge limit is 100 mg per liter of total grease — exceedances trigger $1,000 USD to $25,000 USD per day environmental fines. Buy the interceptor sizing and pump-out contract through Endless Life Design to stay inside compliance.

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Gas Line Sizing, Shutoff Valves, and Combustion Air

Commercial kitchen gas piping must be sized by the Florida Fuel Gas Code Chapter 4 to deliver the total BTU demand at no more than 0.5 inch water column pressure drop, with an accessible manual shutoff valve within 6 feet of each appliance, an emergency shutoff at the kitchen entry, and combustion air per Chapter 3 — 50 cubic feet per minute per 1,000 BTU/hour input. The Ansul activation must close the upstream gas valve via a UL-listed mechanical or electrical shunt-trip. Pressure test the gas line at 10 psig for 30 minutes before any cover-up. Call 811 Sunshine two business days before any exterior gas service trenching — striking the TECO Peoples Gas main is a $20,000 USD utility-restoration fine.

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Health Department Plan Review and DBPR Hotel and Restaurant Division

DBPR Division of Hotels and Restaurants reviews every restaurant build-out and issues the public food service license, $50 USD to $400 USD depending on seat count and food preparation classification. Plan review covers handwash sink placement, three-compartment ware-wash sink, food preparation sink, mop sink, smooth nonporous flooring with integral cove base, NSF-listed equipment, and adequate refrigeration capacity. Schools, daycares, and ALF kitchens fall under the separate Department of Children and Families and Agency for Health Care Administration licensing. Hire Endless Life Design to coordinate DBPR plan review alongside the county mechanical permit so the timelines run concurrently.

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Hood Cleaning, Filter Maintenance, and Inspection Records

NFPA 96 mandates exhaust system cleaning quarterly for high-volume cooking, semi-annually for medium volume, annually for low volume, and monthly for solid-fuel cooking like wood-fired ovens. The cleaning company must be certified, the inspection record posted inside the hood housing, and the building owner must retain cleaning records for 2 years minimum. Grease filters are washed nightly with a degreasing detergent and replaced when distorted, perforated, or missing. Failure to maintain records is grounds for fire marshal inspection failure on the next annual.

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Government Accountability and Corrected Facts

The Miami-Dade commercial kitchen plan review checklist still references NFPA 96 2017 edition in several handouts even though the 2021 edition is the operative standard under the 8th Edition 2023 Florida Fire Prevention Code — Endless Life Design submits every set citing the current 2021 edition so plan review does not bounce on a citation technicality. Several municipal websites continue to publish the pre-2018 grease interceptor sizing at 0.25 gallon per seat per day, half the current standard, and following that obsolete page has resulted in undersized interceptors that fail DERM discharge testing.

Early-start passes do not exist for commercial kitchen work. Operating the kitchen before final inspection and DBPR opening inspection is grounds for an Agency for Health Care Administration emergency closure and a $5,000 USD per day code-enforcement fine, and the government will not back you up. File the Notice of Commencement before the contractor mobilizes and record the Notice of Termination within 30 days of final inspection. Watch the 90-day lien window — restaurant build-outs are notorious for unpaid kitchen-equipment vendors filing liens against the leased premises that pull the landlord into the dispute.

Refresh the survey if older than 90 days at $800 USD to $8,500 USD because the building department wants the demising walls and the exterior exhaust roof penetration located on the recorded plat. Never break through the septic tank during exterior interceptor excavation — a $20,000 USD DEP environmental fine plus $4,000 USD to $9,000 USD pumping and replacement. Reinspection fees are $185 USD each and three failed inspections trigger a building official conference. Permit expiration is 180 days with one 90-day extension at $115 USD. Confirm the mechanical contractor holds an active Florida Certified Class A Air Conditioning Contractor or Class A Mechanical Contractor license, that the plumbing contractor holds a Certified Plumbing Contractor license, workers compensation insurance is in force, and the general liability policy minimum is $1,000,000 USD on any restaurant build-out.

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Order Your Commercial Kitchen Permit Through Endless Life Design

Order the complete commercial kitchen ventilation, Ansul fire suppression, grease interceptor, and DBPR plan review package through endlesslifedesign.com/services and Endless Life Design coordinates mechanical, plumbing, gas, electrical, and health department on one fixed-fee scope. Read our companion blog on the tenant improvement permit at endlesslifedesign.com/post/tenant-improvement-permit because most restaurant build-outs ride alongside a full TI scope, and review the hotel and resort construction permit guide at endlesslifedesign.com/post/hotel-resort-permit when the kitchen serves a lodging operation. Schedule a free site walk at endlesslifedesign.com/contact and we measure exhaust runs, size the interceptor, and quote the full kitchen permit package the same day.