Roofing for Lake St. Louis homes: replacement, leaks and storm damage. In Lake St. Louis, the 2021 Construction Codes are in force and 50% of the 7,657 homes were built before 2000. Any permit the job needs is ours to pull.
Lake St. Louis runs to about 9.35 square miles and roughly 16,707 people. It sits about 34 miles northwest of downtown St. Louis. The community dates back to 1975. We cover ZIP code 63367.
No completed roof in Lake St. Louis is logged in our job records yet.
Lake St. Louis is a planned lake community, developed from its first planning in 1961 and its 1975/1977 incorporation onward. The city reportedly had very little commercial development until growth sped up after 2004, so its housing skews newer than much of the metro.
That includes Harbor Town and The Meadows at Lake St. Louis. Housing age and construction shift across Lake St. Louis, sometimes by decades within a few streets, which is why we look at the roof before we quote rather than after.
The community is built around two private lakes owned by the Lake St. Louis Community Association, and not all residents have lake-access membership. Before incorporating, it faced annexation pressure from O'Fallon to the east and Wentzville to the west.
Newer construction in Lake St. Louis generally has OSB decking, architectural shingles and a proper ridge vent, so the roofs themselves start in better shape. The catch is what the shingle was: a great deal of the building through the 2000s went on with builder-grade shingles carrying a nominal warranty far longer than their real service life, and those are reaching the end now. Hail is the other factor — a newer roof is not a hail-proof roof, and a bruised mat can look perfect from the driveway for two years and then start failing all at once. If yours has never been looked at after a storm, that is the reason to have it looked at.
By the Census Bureau's estimate there are 7,657 homes in Lake St. Louis, with a median year built of 2000. None of them went up before 1940 — one of the five lowest pre-1940 shares of the 48 places on this site — and 3,824 (50%) in 2000 or later. The 2000s were the busiest decade, adding 1,944 of today's homes (25%). That is below St. Charles County's 2%.
Missouri's Department of Commerce and Insurance puts the useful life of a roof at usually about 25 years. That puts 3,833 homes in Lake St. Louis, the 50% built before 2000, past at least one full roof life, and 4% (336 homes) go back before 1970, two roof lives and more. Homes from the 2000s (1,944 in Lake St. Louis) are reaching their first replacement, while the 1,880 built since 2010 are mostly still on the roof they were built with.
67% of homes in Lake St. Louis are single-family detached houses (5,118) and 11% attached ones such as townhouses (835). 859 homes (11%) sit in two- to nine-unit buildings and 845 (11%) in buildings of ten units or more, where a resident rarely gets to choose the roofer. 5,559 of 7,351 occupied homes (76%) are lived in by their owners. With houses like these, the jobs we expect most are first replacements on 2000s builder-grade shingles, flat and low-slope sections, which turn up more on attached and multi-unit buildings and hail checks on newer roofs that look fine from the driveway.
| Built | Homes | Share | |
|---|---|---|---|
| Before 1940 | 0 | 0% | |
| 1940s | 0 | 0% | |
| 1950s | 4 | 0% | |
| 1960s | 332 | 4% | |
| 1970s | 1,151 | 15% | |
| 1980s | 1,169 | 15% | |
| 1990s | 1,177 | 15% | |
| 2000s | 1,944 | 25% | |
| 2010s | 1,133 | 15% | |
| 2020 or later | 747 | 10% |
Census ACS 2020–2024, tables B25034, B25035, B25024 and B25003: 7,657 homes, 7,351 occupied. Survey estimates.
NOAA’s Storm Prediction Center logged 12 reports of hail 1 inch or larger within 5 miles of Lake St. Louis’ center from 2016 through 2025, on 9 different days. None was 1.75 inches or larger. The largest, 1.25 inches, came on May 16, 2025, about 4.1 miles east of the center. Counts follow people as much as storms, since every report is a spotter’s or a resident’s.
| Latest reports | Size | From center |
|---|---|---|
| May 16, 2025 | 1 inch | 3.6 mi E |
| May 16, 2025 | 1.25 inches | 4.1 mi E |
| May 16, 2025 | 1 inch | 4.7 mi E |
| April 30, 2025 | 1 inch | 3 mi E |
| April 1, 2024 | 1 inch | 4.8 mi W |
Hail damage rarely shows from the ground; a storm inspection photographs each slope so you know either way.
Nothing Lake St. Louis publishes says whether a like-for-like re-roof needs a permit. We call the department (636-625-7984) before the job and pull whatever is required.
Lake St. Louis enforces the 2021 Construction Codes.
The published number is 636-625-7984. The building official on record is James Hoeltge, Chief Building Official (636-625-7984). The department page is here.
The design figures are metro-wide rather than local: 115 mph ultimate design wind and a 20 psf ground snow load. What they do to a roof is in the roofing code guide.
Lake St. Louis borders O'Fallon, MO and Wentzville. Our pages for them:
Also in St. Charles County:
| City | Re-roof permit | Code | Median built |
|---|---|---|---|
| Lake St. Louis | Not published | 2021 Construction Codes | 2000 |
| Wentzville | Not published | 2015 I-Codes | 2008 |
| Cottleville | Not published | 2021 IRC | 2012 |
| O'Fallon | Yes | Not published | 2000 |
| St. Charles | No | 2021 IRC | 1986 |
| St. Peters | Not published | 2021 IRC | 1988 |
All 6 St. Charles County cities side by side →
Lake St. Louis publishes no rule on it. We ask the building department first and pull whatever it requires.
Lake St. Louis enforces the 2021 Construction Codes.
Median year built 2000, by the Census Bureau's 2020–2024 estimates. Of 7,657 homes, 3,833 were built before 2000 and 0 before 1940, so most roofs in Lake St. Louis are not the first one the house has had.
12 reports of 1-inch-plus hail fell within 5 miles of Lake St. Louis between 2016 and 2025, the biggest 1.25 inches on May 16, 2025 (NOAA Storm Prediction Center).
The building official on record is James Hoeltge, Chief Building Official. The department's own number is on this page, beside its name.
Not yet: no completed roof in Lake St. Louis is in our job records, so this page shows no job count.
Researched 2026-09-09; housing, Census ACS 2020–2024; hail, NOAA SPC. Sources: www.lakesaintlouis.com · www.lakesaintlouis.com · www.lakesaintlouis.com · ecode360.com · en.wikipedia.org · www.bestplaces.net · data.census.gov · www.spc.noaa.gov. Rules and staff change; check with the jurisdiction.
