Roof Permits and Zoning Approval in Chesterfield
Chesterfield sits in an unusual middle position. It does not run its own building inspection for this work, it contracts that to St. Louis County. But it does add a step of its own before the county side moves. A roofer who works this metro every week knows both halves. A crew that arrived after a storm from three states away often knows neither.
Who signs off on what
The building side is the county's. Chesterfield contracts building inspection to St. Louis County, so the permit, the plan review where one is needed and the inspection all run through the county's process rather than a city building department.
The zoning side is the city's. Chesterfield requires a Municipal Zoning Approval, which is the municipality confirming that what is being proposed is allowed on that particular parcel before the county process proceeds. For a straightforward roof replacement it is a formality. It is still a step, it still has to be done in the right order, and it is one of the small things that separates a contractor who works here from one who does not.
If your property sits inside a subdivision with an active trustee body or an architectural review committee, there is often a third layer that has nothing to do with either government: a private covenant about colour, profile or material. That one binds you by contract, not by ordinance, and no permit clerk will warn you about it.
Ask the bidder
Who pulls the permit if one is needed, whose name it goes in, and whether the fee is inside the quoted price or added afterward. Get the answer written into the scope, not agreed to on the driveway.
Watch for
Any version of "you do not need a permit for this" delivered before anybody has established the slope, the decking condition or whether the material is changing. That is a claim about your specific roof and it cannot be made from the kerb.
When a St. Louis County roof permit is required
The rule is narrower than most homeowners assume, and knowing it protects you in both directions: it stops you being charged for paperwork that was never needed, and it stops a job quietly crossing a threshold that should have triggered a permit.
- No permit for a like for like asphalt shingle replacement on a slope of 4:12 or steeper. Same material, same kind of roof, ordinary pitch. That covers most of the sloped roofs in Chesterfield.
- Permit required if the slope is shallower than 4:12. Low slope sections, porch roofs, sunroom additions and some ranch extensions fall here even when the main roof does not.
- Permit required if more than a quarter of the decking is replaced. This is the one that moves during the job rather than before it.
- Permit required if the covering material changes. Asphalt to metal, asphalt to synthetic slate, anything that is not a like for like swap.
Nobody knows how much decking is bad until the shingles come off. If a roof turns out to need more than a quarter of its boards replaced, two things change at once: your bill, and whether the job now needs a permit it did not need at eight in the morning. This is the single strongest argument for having a decking allowance and a written unit price per sheet or per board in the proposal before the tear off starts. After the tear off your roof is open, the crew is standing on it and your negotiating position has gone.
There is no Missouri roofing licence
Missouri has no statewide licensing scheme for roofing contractors. Senate Bill 1022 in 2016, Senate Bill 153 in 2019 and Senate Bill 326 in 2021 were all introduced and all failed. SB 326 in particular gets cited on contractor websites as though it were law. It is not law. It never passed.
What exists instead is municipal, and it is patchy. Some municipalities in this metro require contractors to register or hold a local licence, some require a bond, and some require nothing at all. Ballwin and Kirkwood, both within a short drive of Chesterfield, run their own contractor licensing. A roofer perfectly legitimate to work in Chesterfield is not automatically registered to work in either of them.
The practical consequence is that "licensed" is a much weaker word in Missouri roofing than it sounds. It does not refer to a state examination, a state board, or a state disciplinary record, because none of those exist for this trade. When a company tells you it is licensed and insured, the useful follow up is not "show me the licence", it is "which municipalities are you registered in, and email me the insurance certificate from your agent with my name on it as certificate holder."
General liability certificate, issued by the insurer, naming you as certificate holder. Workers compensation coverage, or a written statement of why it does not apply. Municipal registration where the municipality requires one. And the permit question answered in writing inside the scope. Four items, all obtainable in a day, all more informative than any star rating.
Do not assume the rule travels
Everything above applies to a property inside Chesterfield city limits in St. Louis County. Cross a municipal line and the answer changes. Cross the Missouri River into St. Charles County and it changes again, and this site will not give you a definitive St. Charles rule, because the official published guidance is currently unreachable and the secondary sources disagree with each other. Anyone quoting you a confident St. Charles permit rule off the top of their head should be asked where they read it. The right move there is to call the county's building division directly and get the answer for your address.
The general principle holds everywhere in this metro: the permit question is answered by the jurisdiction your house sits in, not by the jurisdiction your roofer's office sits in, and not by what a salesperson believes. If you take one habit from this page, take the habit of asking for the answer in writing before work starts.
Have Keys Roofing look at it instead
Keys Roofing works across greater St. Louis and deals with the county process and the Chesterfield zoning step as a matter of routine. If you want the permit question answered for your specific address before you commit to anybody, ask.
A look at the roof here means photographs, measurements and a written scope you keep on file whether or not you hire anybody. If an insurance claim is part of your situation, the claim stays in your name and in your hands: under RSMo 407.725 a Missouri roofing contractor may not represent or negotiate a homeowner's insurance claim, and Keys does not. Keys documents what is on the roof and meets the adjuster there as the contractor.
Straight through to the Keys Roofing office. Roofing, gutters and downspouts across greater St. Louis, and nothing else. Atlas and Malarkey shingles. Licensed and insured.
This goes to Keys Roofing. It does not go to anyone in the ranking. None of the ranked companies pay to appear here, and none of them receive anything you type into this form.