How Much Does a 40×60 Pole Barn Shop Cost in Idaho in 2026?

A 40×60 pole barn is the most common shop size we build in Eastern Idaho. Here’s exactly what it costs in 2026 and where the money goes.

The three price tiers

Shell only: $67,200–$100,800. Posts, trusses, metal siding/roofing, framed openings, no concrete, no doors, no electrical. $28–$42/sq ft.

Insulated with slab and basics: $135,000–$168,000. 6″ reinforced slab, R-25 walls, R-49 ceiling, two 16×10 overhead doors, walk door, 200-amp electrical, basic lighting. $55–$70/sq ft.

Turnkey shop: $180,000–$240,000. Adds radiant floor heat, drywall and paint, upgraded lighting, compressor wiring, half-bath. $75–$100/sq ft.

Where the money actually goes

• Steel package and labor: $48K–$72K
• Concrete slab (6″, reinforced): $22K–$28K
• Site work and pad prep: $8K–$15K
• Doors (two 16×10): $6K–$9K
• Electrical (200-amp + interior): $9K–$14K
• Insulation: $11K–$16K
• Permitting and engineering: $2.5K–$5K

Cost drivers most builders don’t mention

Sidewall height. 12′ to 14′ adds $4K–$6K but matters every day.

Slab thickness. 4″ to 6″ reinforced adds $4K, doubles load capacity.

Roof pitch. 6/12 sheds snow better than 4/12 but adds $3K–$5K.