DuPage County Home Building Costs
Building a house in DuPage County, Illinois costs about $220/sq ft in 2026 — roughly $440,000 for a 2,000 sq ft mid-range home (construction only, land excluded). Population: 930,000.
Local Market Factors
- ›Chicago suburb
- ›Affluent area with quality expectations
Cost by Home Size in DuPage County
| Home Size | Basic | Mid-Range | Premium |
|---|---|---|---|
| 500 sq ft | $81,330 | $110,000 | $149,787 |
| 1,000 sq ft | $162,660 | $220,000 | $299,574 |
| 1,500 sq ft | $243,989 | $330,000 | $449,362 |
| 2,000 sq ft | $325,319 | $440,000 | $599,149 |
| 2,500 sq ft | $406,649 | $550,000 | $748,936 |
| 3,000 sq ft | $487,979 | $660,000 | $898,723 |
| 4,000 sq ft | $650,638 | $880,000 | $1,198,298 |
| 5,000 sq ft | $813,298 | $1,100,000 | $1,497,872 |
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 1.10× 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.