Builder Spec Sheet: 30×40×12 Pole Barn in Huntsville, AL

Sample preview. 2026 prices with local crew rates.

Price summary

Materials-Only Kit$15,902

Concrete Slab & Site Prep$7,400

Turnkey total$39,613

Itemized materials & labor

Item	Quantity	Materials	Labor	Installed
Site grading & building padLaser-leveled pad 2 ft past the walls, compacted fill	1,496 sq ft	$649	$908	$1,869
4" standard concrete slab3,500 PSI ready-mix, #4 rebar 18" grid, vapor barrier, forms	15.9 cu yd	$3,292	$2,550	$7,011
6×6 treated posts, girts & framing lumber18 posts × 16 ft (.60 CCA ground-contact), 2×6 girts, 2×8 treated skirt board	18 posts + 980 lf	$3,493	$3,340	$8,200
30' engineered roof trusses & purlins11 trusses at 4 ft on center, 115 mph rated, 2×4 purlins	11 trusses + 630 lf	$3,270	$1,943	$6,256
29-ga metal roof & wall panels + trimPainted steel panels, ridge cap, corner/door/base trim, closures	31.5 squares	$4,243	$1,831	$7,289
Overhead & walk doors2 × 10×10 overhead doors with track, 1 steel 3×7 walk door	2 overhead + 1 walk door	$3,239	$911	$4,980
Screws, hardware & condensation barrier2,675 color-matched screws, hurricane straps, drip-stop roof barrier	Full fastener schedule	$1,656	$364	$2,424
Permit, stamped drawings & deliveryCounty building permit, engineer-stamped plans, freight to site	Allowance	$1,321	$0	$1,585

Permit & site-prep checklist

☐ Call 811 at least 3 business days before any digging
☐ Check setbacks, HOA covenants and easements for your lot
☐ Apply for a county/city building permit (bring a simple site plan and this spec sheet)
☐ Confirm the truss/frame design meets your local wind and snow load
☐ Plan the building pad 6" or more above grade with drainage away from the building
☐ Make sure concrete trucks can reach the pad (about 12 ft wide, firm ground)
☐ Plan electrical service: trench route, panel location, outlets and lights
☐ Order trusses and steel early (lead times are often 2–4 weeks)
☐ Schedule inspections: post holes or footings, framing, and final
☐ Get 3 itemized bids on this exact spec and compare them with the Bid Comparison sheet

In the full pack: every line unlocked, an editable Excel shopping list (change any price and totals update), this spec sheet as a PDF, and a sheet for comparing 3 builder bids. 30-day money-back guarantee.