City building permits · May 2026
Ontario Building Permits
Monthly residential building permits for Ontario, California — 174 units in May 2026, 1,063 over the last 12 months — latest month +30.8% vs. a year earlier.
174
Units (latest month)
56
Single-family units
118
Multifamily (5+) units
$37,400,321
Reported value
Trailing 12 months: 1,063 units permitted · latest month +30.8% vs. a year earlier.
| Structure type | Units | Share |
|---|---|---|
| Single-family (1-unit) | 56 | 32.2% |
| 2-unit structures | 0 | 0.0% |
| 3–4 unit structures | 0 | 0.0% |
| Multifamily (5+ units) | 118 | 67.8% |
| All units | 174 | 100% |
Ontario building permits — FAQ
How many building permits were issued in Ontario, California?+
174 new residential units were authorized in Ontario in May 2026, and 1,063 over the trailing 12 months, per the Census Building Permits Survey.
What types of housing is Ontario permitting?+
In May 2026, 56 single-family and 118 units in 5+ unit buildings were permitted — 67.8% of the total was multifamily.
Why might Ontario'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.