Fairfax County Home Building Costs
Building a house in Fairfax County, Virginia costs about $222/sq ft in 2026 — roughly $444,000 for a 2,000 sq ft mid-range home (construction only, land excluded). Population: 1,150,000.
Local Market Factors
- ›DC suburb
- ›Highest costs in state
- ›Federal contractor labor market
Cost by Home Size in Fairfax County
| Home Size | Basic | Mid-Range | Premium |
|---|---|---|---|
| 500 sq ft | $82,069 | $111,000 | $151,149 |
| 1,000 sq ft | $164,138 | $222,000 | $302,298 |
| 1,500 sq ft | $246,207 | $333,000 | $453,447 |
| 2,000 sq ft | $328,277 | $444,000 | $604,596 |
| 2,500 sq ft | $410,346 | $555,000 | $755,745 |
| 3,000 sq ft | $492,415 | $666,000 | $906,894 |
| 4,000 sq ft | $656,553 | $888,000 | $1,209,191 |
| 5,000 sq ft | $820,691 | $1,110,000 | $1,511,489 |
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 Virginia state average (which itself is 1.05× 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.