In Ballwin, the 2015 I-Codes are in force and 0% of the 12,563 homes went up before 1940. We replace and repair roofs here and inspect after hail, starting with a free, photographed inspection.
Ballwin runs to about 9.1 square miles and roughly 31,279 people. It sits about 18 miles west of downtown St. Louis. The community dates back to 1950. We cover ZIP codes 63011 and 63021.
No completed roof in Ballwin is logged in our job records yet.
Ballwin's housing is predominantly 1960s-70s subdivision construction.
Ballwin was settled in 1837 and incorporated in December 1950. The median home here was built in 1976. The original 1870 sanctuary of Salem in Ballwin United Methodist Church, with its German-language inscription, still stands today.
Housing from this stretch in Ballwin 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.
By the Census Bureau's estimate there are 12,563 homes in Ballwin, with a median year built of 1976. 57 of them (0%) went up before 1940 — one of the five lowest pre-1940 shares of the 48 places on this site — and 1,002 (8%) in 2000 or later. The 1960s were the busiest decade, adding 3,139 of today's homes (25%). That is below St. Louis County's 10%.
About 25 years is the usual working life of a roof, by the figure Missouri's insurance department publishes. By that measure, 92% of Ballwin's homes — the 11,561 built before 2000 — are past their first roof, and 35% (4,376 homes) go back before 1970, two roof lives and more. The 666 homes from the 2000s are where first replacements come up now, while the 336 built since 2010 are mostly still on the roof they were built with. At that age it pays to know whether the last roof was torn off or laid over the one before it, because a second layer hides the deck.
Detached single-family houses make up 81% (10,207); attached houses and townhouses 7% (886). 1,177 homes (9%) sit in two- to nine-unit buildings and 293 (2%) in buildings of ten units or more, where the roof is usually a landlord's or an association's decision. 84% of occupied homes are owner-occupied, 16% rented. On a housing mix like this, the likely work is flat and low-slope sections, which turn up more on attached and multi-unit buildings.
| Built | Homes | Share | |
|---|---|---|---|
| Before 1940 | 57 | 0% | |
| 1940s | 180 | 1% | |
| 1950s | 1,000 | 8% | |
| 1960s | 3,139 | 25% | |
| 1970s | 3,028 | 24% | |
| 1980s | 2,162 | 17% | |
| 1990s | 1,995 | 16% | |
| 2000s | 666 | 5% | |
| 2010s | 336 | 3% | |
| 2020 or later | 0 | 0% |
Census ACS 2020–2024, tables B25034, B25035, B25024 and B25003: 12,563 homes, 12,079 occupied. Survey estimates.
NOAA’s Storm Prediction Center logged 16 reports of hail 1 inch or larger within 5 miles of Ballwin’s center from 2016 through 2025, on 9 different days. 6 of them were 1.75 inches or larger. The largest, 2 inches, came on May 16, 2025, about 4.5 miles north of the center. These are reports, not a full record: they come from spotters and the public, so busier areas log more.
| Latest reports | Size | From center |
|---|---|---|
| May 16, 2025 | 1.25 inches | 4.5 mi N |
| May 16, 2025 | 1.25 inches | 4.9 mi NE |
| May 16, 2025 | 1 inch | 4.5 mi N |
| May 16, 2025 | 1 inch | 4 mi N |
| May 16, 2025 | 1.75 inches | 4.5 mi N |
If one of those storms crossed your street and nobody has been on the roof since, a storm inspection photographs what it did.
The city's building permit page lists 'Roofing Requirements' among the items that need a building permit.
Ballwin enforces the 2015 I-Codes (2024 I-Codes proposed for 2026). The city has been on the 2015 codes and has proposed adopting the 2024 International Codes effective 2026 (2024 IBC, 2024 IRC, 2023 NEC, 2024 IPMC, 2024 IFGC, 2024 IPC, 2024 IMC). We confirm which edition is in effect with the city before work starts.
The published number is 636-227-2129. The city refers to 'the City's Building Inspector' but does not publish a name. The department page is here.
Ballwin shares the metro's figures: 115 mph design wind, 20 psf ground snow. The code guide explains both.
Ballwin borders Chesterfield, Manchester, Ellisville, Town and Country, Clarkson Valley and Winchester. Our pages for them:
Also in St. Louis County:
| City | Re-roof permit | Code | Median built |
|---|---|---|---|
| Ballwin | Yes | 2015 I-Codes (2024 I-Codes proposed for 2026) | 1976 |
| Chesterfield | Not published | 2015 IBC / 2015 IRC | 1982 |
| Manchester | Not published | Not published | 1977 |
| Ellisville | Not published | 2015 IRC | 1983 |
| Town and Country | Yes | 2018 I-Codes (2024 I-Codes pending) | 1983 |
| Wildwood | Not published | Not published | 1992 |
| Affton | Conditional | 2015 IRC | 1958 |
All 21 St. Louis County cities side by side →
The city's building permit page lists 'Roofing Requirements' among the items that need a building permit.
Ballwin enforces the 2015 I-Codes (2024 I-Codes proposed for 2026). The city has been on the 2015 codes and has proposed adopting the 2024 International Codes effective 2026 (2024 IBC, 2024 IRC, 2023 NEC, 2024 IPMC, 2024 IFGC, 2024 IPC, 2024 IMC). We confirm which edition is in effect with the city before work starts.
Median year built 1976, by the Census Bureau's 2020–2024 estimates. Of 12,563 homes, 11,561 were built before 2000 and 57 before 1940, so most roofs in Ballwin are not the first one the house has had.
The last report near Ballwin of hail 1 inch or bigger came on May 16, 2025; NOAA's records hold 16 of them within 5 miles since 2016.
Not yet: no completed roof in Ballwin 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.ballwin.mo.us · www.ballwin.mo.us · www.ballwin.mo.us · en.wikipedia.org · censusreporter.org · www.point2homes.com · www.ballwin.mo.us · data.census.gov · www.spc.noaa.gov. Rules and staff change; check with the jurisdiction.
