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40×60 Pole Barn Cost in Montana (2026)

A 40×60 pole barn in Montana costs about $71,578 turnkey in 2026 ($29.82 per sq. ft.). Here's the itemized breakdown of materials, site prep and labor, using local crew rates.

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Materials-Only Kit
$26,117
Delivered lumber, trusses, metal panels & hardware
= Rows 3–7 below, materials only
Concrete Slab & Site Prep
$18,316
Grading, forms, rebar & poured concrete floor
= Rows 1–2 below, installed price
Turnkey Installed Total
$71,578
$29.82 per sq. ft.
Complete build with a local licensed crew, materials & slab
= All rows below, installed price
A fair bid from a local builder in Montana should land between $65,852 and $78,736. Get 3 quotes, and if one is far outside this range, ask why.

Estimate only. Actual prices vary. No guarantee or warranty. Use as a guide only. Read the full disclaimer

Itemized cost breakdown

#ItemQuantityMaterialsLaborInstalled
1Site grading & building padLaser-leveled pad 2 ft past the walls, compacted fill2,816 sq ft$1,256$1,822$3,694
24" standard concrete slab3,500 PSI ready-mix, #4 rebar 18" grid, vapor barrier, forms31.7 cu yd$6,752$5,433$14,622
36×6 treated posts, girts & framing lumber26 posts × 18 ft (.60 CCA ground-contact), 2×6 girts, 2×8 treated skirt board26 posts + 1,600 lf$5,764$7,115$15,455
440' engineered roof trusses & purlins16 trusses at 4 ft on center, 115 mph rated, 2×4 purlins16 trusses + 1,240 lf$6,536$4,140$12,811
529-ga metal roof & wall panels + trimPainted steel panels, ridge cap, corner/door/base trim, closures56.3 squares$7,576$3,493$13,283
6Overhead & walk doorsDetails in the spec sheet🔒 Included in $19 spec sheet$3,330$970$5,160
7Screws, hardware & condensation barrierDetails in the spec sheet🔒 Included in $19 spec sheet$2,911$776$4,424
8Permit, stamped drawings & deliveryDetails in the spec sheet🔒 Included in $19 spec sheet$1,774$0$2,129
Turnkey total$35,899$23,749$71,578
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Prices use 2026 material costs and typical local crew rates. Site work, custom options and material price swings can move your final price.

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Common questions

How much does a 40×60 Pole Barn cost in Montana?

About $71,578 fully built by a local crew in 2026, or roughly $26,117 for the materials kit alone. Most fair bids land between $65,852 and $78,736.

What drives the price up or down?

Site prep (slope, soil, driveway access), floor choice, doors and insulation, and local labor rates. Lumber and steel prices also move a few percent a year.

Do I need a permit?

Most counties require a building permit for structures over 200 sq ft. Call your county building department with your size and location before you order materials.

How do I make sure I'm getting a fair quote?

Get at least 3 itemized bids for the same spec. Compare them line by line against this breakdown and ask about anything far above or below it.

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