State building permits

Illinois building permits: new housing

18,623 new housing units permitted in the 12 months to September 2026, -8% on the year before, with $5.9B of construction value.

Plus 2,618 commercial and multifamily projects in the last 90 days in Chicago, where we track every permit.

New housing units permitted per month

Commercial permits

Commercial construction in Illinois cities we cover

2,618 commercial and multifamily projects in the last 90 days, from each city’s own permit data.

Rolling 90 days, from each city’s own permit data.

By declared value; contractors named 30 days after the first permit.

Building size	Buildings	Units	Value
Single-family	10,547	10,547	$4B
2 units	247	494	$94.2M
3–4 units	264	861	$168M
5+ units	358	6,721	$1.7B

Year	Housing units	In 5+ unit buildings	Value
2025	18,551	6,267	$5.8B
2024	20,326	8,771	$5.8B
2023	16,863	5,999	$4.5B