City building permits · May 2026
O'Fallon Building Permits
Monthly residential building permits for O'Fallon, Illinois — 13 units in May 2026, 205 over the last 12 months — latest month -43.5% vs. a year earlier.
13
Units (latest month)
7
Single-family units
0
Multifamily (5+) units
$3,594,496
Reported value
Trailing 12 months: 205 units permitted · latest month -43.5% vs. a year earlier.
| Structure type | Units | Share |
|---|---|---|
| Single-family (1-unit) | 7 | 53.8% |
| 2-unit structures | 6 | 46.2% |
| 3–4 unit structures | 0 | 0.0% |
| Multifamily (5+ units) | 0 | 0.0% |
| All units | 13 | 100% |
O'Fallon building permits — FAQ
How many building permits were issued in O'Fallon, Illinois?+
13 new residential units were authorized in O'Fallon in May 2026, and 205 over the trailing 12 months, per the Census Building Permits Survey.
What types of housing is O'Fallon permitting?+
In May 2026, 7 single-family and 0 units in 5+ unit buildings were permitted — 46.2% of the total was multifamily.
Why might O'Fallon's numbers be zero some months?+
Permit activity is lumpy at the city level, and small jurisdictions may report to the Census with a lag. Zero in a month means no permits were reported, not necessarily no construction interest.