City building permits · May 2026
Darien Building Permits
Monthly residential building permits for Darien, Illinois — 1 units in May 2026, 70 over the last 12 months — latest month -90% vs. a year earlier.
1
Units (latest month)
1
Single-family units
0
Multifamily (5+) units
$400,000
Reported value
Trailing 12 months: 70 units permitted · latest month -90% vs. a year earlier.
| Structure type | Units | Share |
|---|---|---|
| Single-family (1-unit) | 1 | 100.0% |
| 2-unit structures | 0 | 0.0% |
| 3–4 unit structures | 0 | 0.0% |
| Multifamily (5+ units) | 0 | 0.0% |
| All units | 1 | 100% |
Darien building permits — FAQ
How many building permits were issued in Darien, Illinois?+
1 new residential units were authorized in Darien in May 2026, and 70 over the trailing 12 months, per the Census Building Permits Survey.
What types of housing is Darien permitting?+
In May 2026, 1 single-family and 0 units in 5+ unit buildings were permitted — 0.0% of the total was multifamily.
Why might Darien'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.