What it actually takes to re-roof a house in Unincorporated St. Louis County — whether the county wants a permit, which code edition applies, who to call at the building department, and how old the housing here really is. No sales copy dressed up as local knowledge.
This page covers the parts of the county that are not inside a city — where the county, not a municipality, runs building and permits. The Census does not publish population or housing totals for that remainder on its own, so this page does not quote any: the figures you will see elsewhere for “St. Louis County” include every municipality in it as well.
We have not logged a completed roof in Unincorporated St. Louis County yet. We would rather say so than put a number on this page that is not real.
The county's Historic Buildings Commission maintains a countywide National Register list, but districts are attributed to specific municipalities rather than the unincorporated area as a whole.
St. Louis County Public Works publishes a dedicated 'Residential Re-Roofing Checklist and Guide,' which indicates re-roofing is a permitted activity in unincorporated county.
Unincorporated St. Louis County has not published the edition it currently enforces anywhere we could verify, so this page does not name one. Editions across the metro run from the 2006 IRC to the 2024 IRC, which is a genuinely wide spread — worth asking your contractor which one they are building to.
The published number is 314-615-5184. Unincorporated St. Louis County does not publish the building official's name, so this page does not name one. Plenty of sites will show you one anyway. The department page is here.
Permitting is on us, not on you.
Unlike some states, Missouri does not assign each municipality its own wind and snow numbers — these are metro-wide.
| Criterion | Figure | What it drives |
|---|---|---|
| Ultimate design wind (Vult) | 115 mph | Fastener schedule and the manufacturer wind rating we specify |
| Nominal design wind (Vasd) | 89 mph (derived, not published locally) | The allowable-stress figure older specs quote |
| Ground snow load | 20 psf | Structure, and how much the eaves hold in a freeze-thaw |
| Frost depth | 30 in | Footings, not roof covering |
| Seismic design category | C residential / D commercial | Lateral bracing and structural connections — not shingles |
What each of these actually does to a roof, why New Madrid does not change how shingles go on, and the difference between the code minimum and the manufacturer minimum on nails per shingle, are all in the St. Louis roofing code guide.
Elsewhere in St. Louis County we also cover:
Missouri sets none of this at state level, so a specification that was right one municipality over is not automatically right here.
| City | Permit for a re-roof | Adopted code | Building dept. |
|---|---|---|---|
| Affton | Yes | Not published | 314-615-5184 |
| Ballwin | Yes | 2015 I-Codes (2024 I-Codes proposed for 2026) | 636-227-2129 |
| Brentwood | Not published | 2024 IRC | 314-963-8602 |
| Chesterfield | Not published | 2015 IBC / 2015 IRC | 636-537-4000 |
| Clayton | Not published | 2021 IRC | 314-290-8463 |
| Creve Coeur | Not published | 2009 IRC | 314-872-2500 |
| Des Peres | Not published | 2018 I-Codes | 314-835-6100 |
| Ellisville | Not published | 2015 IRC | 636-227-9660 |
| Eureka | Not published | 2018 IRC | — |
| Florissant | Not published | 2021 IRC | 314-839-7648 |
| Kirkwood | Not published | 2021 IRC | 314-822-5823 |
| Manchester | Not published | Not published | 314-615-5184 |
| Maryland Heights | Yes | 2021 IRC | 314-291-6550 |
| Mehlville | Yes | Not published | 314-615-5184 |
| Oakville | Yes | Not published | 314-615-5184 |
| Richmond Heights | Not published | Not published | 314-646-7658 |
| Town and Country | Yes | 2018 I-Codes (2024 I-Codes pending) | 314-587-2820 |
| University City | Not published | 2018 IRC | — |
| Webster Groves | Not published | 2015 IBC family | 314-963-5300 |
| Wildwood | Not published | Not published | — |
Free inspection, a written scope, and photos you keep either way.
St. Louis County Public Works publishes a dedicated 'Residential Re-Roofing Checklist and Guide,' which indicates re-roofing is a permitted activity in unincorporated county.
Not yet. We have no completed roof logged in Unincorporated St. Louis County, and we would rather say so than put a number on this page that is not real.
Missouri has no state-level roofing contractor licence. Licensing and registration are imposed municipally, and several St. Louis metro cities require it. Illinois does licence roofers statewide, so a contractor working the Metro East needs an IDFPR roofing licence.
Permit and code details for Unincorporated St. Louis County come from the jurisdiction's own published pages and codified ordinances. Population, housing and neighbourhood detail come from census data and the sources below; housing-age figures are ACS-derived medians republished by housing-data services, so treat them as approximate. Sources: manchestermo.gov · stlouiscountymo.gov · stlouiscountymo.gov · en.wikipedia.org · censusreporter.org · stlouiscountymo.gov. Municipal staffing, phone numbers and adopted code editions change — confirm with the jurisdiction before relying on anything here.