Cost to Build a House in Missoula County, Montana
Building a house in Missoula County, Montana costs about $184/sq ft in 2026 — roughly $323,840–$412,160 for a 2,000 sq ft mid-range home (construction only, land excluded). 423 single-family homes were permitted here in 2025, and the typical existing home is worth $579,808.
That is the Montana statewide rate: no public source measures construction cost county by county, so we don't invent a local premium. What does differ by county is measured below.
How much building happens in Missoula County
Single-family homes permitted each year, 2000–2025. 2025 is highlighted; the 2008–2011 crash years are darker.
Missoula County has recovered most of its pre-crash building volume. Builders are active here and it should be possible to get several competing bids.
U.S. Census Bureau Building Permits Survey, county annual files 2000–2025 (1-unit structures, total including imputation).
Build or buy in Missoula County?
Unusually, building a median-size new home in Missoula County costs about $63,620 less than buying the typical existing one. That gap is narrower than the Montana average of +7.9%, because existing homes here are pricier than in much of the state — which makes Missoula County one of the stronger cases for building in Montana.
The two sides are not the same product: the build is brand new at the median new-home size for the West, the existing home is typically older and smaller. Lot cost uses Montana's average land share, and local lot prices can be well above or below it. Full Montana build-vs-buy comparison
Existing home value: Zillow Home Value Index, single-family, middle tier (2026-08) — an index of typical value, not a median sale price. Land: FHFA Working Paper 19-01.
What builders declared on Missoula County permits (2025)
The average declared valuation was $305,112 per home, against our $368,000 estimate for a 2,000 sq ft mid-range build. The two measure different things: builders declare a valuation for permit-fee purposes, which routinely understates finished cost, and permits cover homes of every size and finish level. We show both because quoting only the flattering one would be dishonest.
Source: U.S. Census Bureau Building Permits Survey, 2025 annual data.
What building in Missoula County actually involves
Cost per square foot is one number. These are the conditions behind it.
How busy this market is
Missoula County ranks 3rd of 46 counties in Montana for single-family permits issued in 2025, accounting for 15.8% of all the single-family homes permitted statewide that year.
That puts it among the busiest building markets in the state — deep contractor supply, but also the most competition for their time.
U.S. Census Bureau Building Permits Survey, co2025a.txt (2025).
What land adds on top
Land averages 25.5% of finished property value in Montana, which is a markup of about 34% on construction cost. For the $368,000 build above, that implies roughly $125,120 for the lot.
This is a statewide figure. Lots inside Missoula County's built-up areas will run above it and rural parcels below, so treat it as an order of magnitude rather than a budget line.
FHFA Working Paper 19-01 land values.
Statewide factors
Trade wages, climate load, energy code and permit seasonality are set at state level, so they are the same for every Montana county. See them on the Montana page.
Cost by Home Size in Missoula County
| Home Size | Basic | Mid-Range | Premium |
|---|---|---|---|
| 500 sq ft | $68,021 | $92,000 | $125,277 |
| 1,000 sq ft | $136,043 | $184,000 | $250,553 |
| 1,500 sq ft | $204,064 | $276,000 | $375,830 |
| 2,000 sq ft | $272,085 | $368,000 | $501,106 |
| 2,500 sq ft | $340,106 | $460,000 | $626,383 |
| 3,000 sq ft | $408,128 | $552,000 | $751,660 |
| 4,000 sq ft | $544,170 | $736,000 | $1,002,213 |
| 5,000 sq ft | $680,213 | $920,000 | $1,252,766 |
Other Montana counties
Costs are estimates only and represent construction costs, excluding land, architect fees, permits, and landscaping. Land in Montana averages 25.5% of finished property value (FHFA), which adds roughly 34% on top of these construction figures.
Priced at the Montana state average, which is 0.98× the national average of $188/sq ft. Permit and home-value figures are specific to Missoula County.
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 permits: U.S. Census Bureau Building Permits Survey. Home values: Zillow Home Value Index. For planning purposes only.