What it actually takes to re-roof a house in St. Charles — whether the city 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.
St. Charles runs to about 25.67 square miles and roughly 72,458 people. It sits about 20 miles northwest of downtown St. Louis. There are around 33,094 housing units here, and every one of them has a roof with a clock on it. The community dates back to 1809. We cover ZIP codes 63301, 63302, 63303 and 63304.
We have not logged a completed roof in St. Charles yet. We would rather say so than put a number on this page that is not real.
The typical home in St. Charles dates to around the mid-1980s. A house of that vintage has usually been through two roofs, and the one on it now is often the second — which means it is old enough to be checked rather than assumed.
Historic riverfront/Main Street core (St. Charles Historic District, Frenchtown Historic District) has buildings mostly from the 1830s-1940s in Greek Revival, Italianate and Late Victorian styles.
That includes Frenchtown and New Town. Housing age and construction shift across St. Charles, sometimes by decades within a few streets, which is why we look at the roof before we quote rather than after.
St. Charles was Missouri's first state capital (1821-1826); its historic districts hold over a hundred structures spanning the state's early statehood period, while New Town is a modern New Urbanist-style planned development.
Housing from this stretch in St. Charles sits on plywood or OSB decking and was largely first roofed with three-tab shingles. Most are on their second covering by now. The things worth checking are the penetrations rather than the field: pipe boots from this era are the single most common leak we trace, because the rubber collar splits long before the shingles wear out. Ridge venting was inconsistent through these years, and OSB that has been damp for a season goes soft in a way plywood does not — you find it with your feet, not from the ground.
The city's Building Division page lists 'Replacing roof shingles' among projects that generally do NOT require a permit. It does not address structural roof repairs or full sheathing replacement, so a job that goes beyond shingles should be confirmed.
St. Charles enforces the 2021 IRC. Currently enforced: 2021 IBC, 2021 IRC, 2021 IEBC, 2021 IPC, 2021 IMC, 2021 IFGC, 2021 ISPSC, 2015 IECC, 2020 NEC. Adoption dates are not published on the city's adopted-codes page.
The published number is 636-949-3222. The city references a 'City Building Commissioner' but does not publish the incumbent's name. 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. Charles 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. |
|---|---|---|---|
| Cottleville | Not published | 2021 IRC | 636-498-6565 |
| Lake St. Louis | Not published | 2021 Construction Codes | 636-625-7984 |
| O'Fallon | Yes | Not published | 636-379-5660 |
| St. Peters | Not published | 2021 IRC | 636-278-2244 |
| Wentzville | Not published | 2015 I-Codes | 636-327-5101 |
Free inspection, a written scope, and photos you keep either way.
The city's Building Division page lists 'Replacing roof shingles' among projects that generally do NOT require a permit. It does not address structural roof repairs or full sheathing replacement, so a job that goes beyond shingles should be confirmed.
St. Charles enforces the 2021 IRC. Currently enforced: 2021 IBC, 2021 IRC, 2021 IEBC, 2021 IPC, 2021 IMC, 2021 IFGC, 2021 ISPSC, 2015 IECC, 2020 NEC. Adoption dates are not published on the city's adopted-codes page.
The typical home in St. Charles dates to around the mid-1980s, so most roofs here are on their second or third covering rather than their first. That figure is an ACS-derived median republished by housing-data services, not a survey of individual roofs.
It can. St. Charles has St. Charles Historic District and Frenchtown Historic District. Inside a designated district, changing a visible roof material or colour can need preservation review before the permit is issued. Like-for-like replacement usually raises fewer questions, but we check before quoting.
Not yet. We have no completed roof logged in St. Charles, 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 St. Charles 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: www.stcharlescitymo.gov · www.stcharlescitymo.gov · ecode360.com · en.wikipedia.org · censusreporter.org · en.wikipedia.org · en.wikipedia.org · www.city-data.com. Municipal staffing, phone numbers and adopted code editions change — confirm with the jurisdiction before relying on anything here.