Short answer: St. Louis County has no single fire code for restaurants. It's served by 19 municipal fire departments and 24 fire protection districts, and each one adopts its own fire code and runs its own permits and inspections. Your authority having jurisdiction (AHJ) is whichever department or district covers your address, and code editions range from the 2015 to the 2021 International Fire Code.
One County, Dozens of Fire Authorities
In June 2026, Firehouse reported that St. Louis County "is currently served by 19 municipal fire departments, run by local cities, and 24 fire districts," with each district governed by an elected board. The same report covered seven cities (Olivette, University City, Clayton, Richmond Heights, Maplewood, Webster Groves and Shrewsbury) studying a possible fire department merger. Older counts differ slightly, and a 2015 study counted 43 departments and districts in all. The exact number shifts, but the practical point doesn't: your kitchen answers to one specific fire authority, and its rules may not match the one a mile away.
Fire district boundaries don't always follow city limits. A restaurant with a city mailing address may be protected by a fire protection district rather than a city fire department. If you're not sure who your AHJ is, ask your city hall or the fire department that responds to your address, or ask the provider to confirm it when they quote the job.
How the Rules Differ: Examples From Around the County
These are examples we were able to confirm from district and city documents. They show how much variation there is. They aren't a complete list, and every AHJ can update its code.
| Fire authority | Code edition | Hood-related detail |
|---|---|---|
| Metro West FPD (Wildwood, Ellisville, Clarkson Valley area) | 2021 IFC, Ordinance No. 121 | Local amendment requires wet- and dry-chemical systems to be acceptance tested with a discharge of the extinguishing agent |
| City of Clayton | 2021 IFC | Kitchen hood systems are listed among fire protection permits; the permit card and approved plans must be on site or the inspection request is rejected |
| Creve Coeur FPD | District-adopted code (edition not confirmed) | Permit application lists "Hood Suppression" as a permit type; covers Creve Coeur, Town & Country and unincorporated areas in the district |
| City of Kirkwood | 2021 IFC (per published reports) | Fire prevention permits include "Commercial Kitchen Hood and Suppression Systems" |
| Mehlville FPD (south county) | 2015 IFC in most policies; 2021 IFC in 2023 policies | Plan review and permit fees set by district ordinance |
| University City | Own fire code | Bureau of Fire Prevention under the Fire Marshal |
Affton, Monarch, West County EMS & FPD, Webster Groves, Maplewood, Brentwood, Ladue and the rest are each their own AHJ too. We haven't confirmed their individual editions or hood procedures, so check with them directly.
Code note: Section numbers depend on the edition your AHJ adopted. Under the 2021 IFC, kitchen suppression is §904.13 and hood maintenance is §606. Under the 2015 IFC, they're §904.12 and §609. If a write-up cites a section that doesn't seem to match, the edition is usually why.
The Metro West Discharge Test
One local amendment stands out. Metro West FPD's Ordinance No. 121, which adopts the 2021 IFC as the district's Fire Prevention Code, amends acceptance testing (§904.4.4) to say that "all dry-chemical and wet-chemical extinguishing systems shall also be tested by a discharge of the extinguishing agent," in addition to an expellant-gas discharge through the piping and nozzles. In plain terms, a new system in that district is expected to actually discharge agent during acceptance, which affects scheduling, cleanup and recharge planning before opening day. If you're building out a kitchen in the Wildwood or Ellisville area, raise this with your provider early. The kitchen fire suppression installation page explains the permit and acceptance steps in more detail.
What This Means for Your Kitchen
- Routine service is the same everywhere. The IFC requires service at least every six months and after any activation. Fusible links are replaced at least every six months under NFPA 17A/NFPA 96 and manufacturer guidance; some code texts set an annual minimum. The kitchen fire suppression inspection page covers what a semiannual visit includes.
- Permits come from your district or city. New systems, modifications and appliance changes go through the AHJ that covers your address, not a county office.
- Write-ups follow local practice. Deadlines, re-inspection steps and how corrections are reported vary. If you were cited, the fire code deficiency repair page explains common items and documentation.
- Discharges need a recharge before cooking. After any activation, the system needs service before that cook line goes back into use. See hood system recharge and repair.
Health permits run separately
St. Louis County Department of Public Health issues food permits under County Ordinance 22.724, and those permits are reported to be void on a change of ownership. That's a health rule, not a fire code rule. Whether a new owner needs anything from the fire district is up to that district, so ask. Either way, a new owner should get the last semiannual report and check the service tag. Our restaurant fire inspection checklist is a good starting point.
Where the County's Restaurant Kitchens Are
County dining is spread across older downtowns and newer commercial corridors:
- Clayton: the county seat, with steakhouses and business dining.
- Maplewood: Manchester Road and Sutton Boulevard.
- Kirkwood and Webster Groves: historic downtown restaurant districts.
- Delmar Loop in University City, and the Brentwood and Richmond Heights corridor.
- Chesterfield and Chesterfield Valley in west county, plus the Manchester Road corridor.
- Casinos: Hollywood Casino in Maryland Heights and River City Casino in Lemay.
- Campuses: UMSL in Normandy and Washington University's Danforth Campus on the Clayton and University City line.
Recent Kitchen Fires in the County
Two recent fires show why hood areas get so much attention from fire officials:
- Three Kings Public House, Delmar Loop (April 26, 2023). A three-alarm fire around 3 a.m. University City Fire Battalion Chief Jon Bollinger said "the fire started in the hood vent area of the kitchen."
- Asador Del Sur, Maplewood (August 30, 2025). Firefighters believed the fire started in the kitchen area. No injuries were reported.
Neither report says whether a suppression system operated. What they show is that the hood and kitchen area is where restaurant fires tend to start, which is what semiannual service and hood cleaning are meant to address.
Requesting Service in St. Louis County
Include your address and, if you know it, your fire district. Add the system brand from the cylinder label, your last tag date, and any notice from the fire marshal. If the system is ANSUL, the ANSUL system service page explains what to ask about manufacturer training. For what drives quotes, see our restaurant fire suppression cost guide.
Neighboring Areas
East of the county line, St. Louis City has a single fire authority on the 2018 IFC. Across the Missouri River, St. Charles County, Missouri fire districts have largely moved to the 2021 IFC and use occupancy permits. Across the Mississippi, Metro East, Illinois adds state rules and technician licensing.
Sources: Firehouse, June 21, 2026; EMS World, fragmented fire/EMS study; Metro West FPD Ordinance No. 121; Mehlville FPD Policy Book; Creve Coeur FPD permit application; Clayton FD plan submission; Kirkwood fire prevention permits; 2021 code adoptions report; University City fire code; IFC §904.12 text; St. Louis Magazine, Clayton; St. Louis Magazine, Maplewood/Brentwood; Missouri Gaming Commission; St. Louis Magazine, Three Kings fire; First Alert 4, Asador Del Sur fire. Requirements vary by jurisdiction; confirm with your local fire official.