Cook County Home Building Costs
Building a house in Cook County, Illinois costs about $236/sq ft in 2026 — roughly $472,000 for a 2,000 sq ft mid-range home (construction only, land excluded). Population: 5,200,000.
Local Market Factors
- ›Chicago metro
- ›Strong union labor
- ›Complex permit process
Cost by Home Size in Cook County
| Home Size | Basic | Mid-Range | Premium |
|---|---|---|---|
| 500 sq ft | $87,245 | $118,000 | $160,681 |
| 1,000 sq ft | $174,489 | $236,000 | $321,362 |
| 1,500 sq ft | $261,734 | $354,000 | $482,043 |
| 2,000 sq ft | $348,979 | $472,000 | $642,723 |
| 2,500 sq ft | $436,223 | $590,000 | $803,404 |
| 3,000 sq ft | $523,468 | $708,000 | $964,085 |
| 4,000 sq ft | $697,957 | $944,000 | $1,285,447 |
| 5,000 sq ft | $872,447 | $1,180,000 | $1,606,809 |
Costs are estimates only and represent construction costs, excluding land, architect fees, permits, and landscaping. Add 30–40% to these figures for total project cost.
County multiplier of 1.18× applied to Illinois state average (which itself is 1.12× the national average of $179/sq ft).
Cost data: HouseBuildCalc Permit Cost Index (876,000+ building permits, 1,700+ ZIP codes), U.S. Census Bureau Survey of Construction, BLS Producer Price Index, NAHB Cost of Constructing a Home (published summaries). County-level multipliers are estimates derived from regional market data. For planning purposes only.