Gallatin County Home Building Costs
Building a house in Gallatin County, Montana costs about $201/sq ft in 2026 — roughly $402,000 for a 2,000 sq ft mid-range home (construction only, land excluded). Population: 125,000.
Local Market Factors
- ›Bozeman area
- ›Fastest growing in state
- ›Remote worker influx driving costs up
Cost by Home Size in Gallatin County
| Home Size | Basic | Mid-Range | Premium |
|---|---|---|---|
| 500 sq ft | $74,306 | $100,500 | $136,851 |
| 1,000 sq ft | $148,612 | $201,000 | $273,702 |
| 1,500 sq ft | $222,918 | $301,500 | $410,553 |
| 2,000 sq ft | $297,223 | $402,000 | $547,404 |
| 2,500 sq ft | $371,529 | $502,500 | $684,255 |
| 3,000 sq ft | $445,835 | $603,000 | $821,106 |
| 4,000 sq ft | $594,447 | $804,000 | $1,094,809 |
| 5,000 sq ft | $743,059 | $1,005,000 | $1,368,511 |
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 1.15× applied to Montana state average (which itself is 0.98× 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.