30x40 Pole Barn Kit
A 30x40 pole barn kit is the most versatile post-frame footprint there is. It parks three vehicles, or two vehicles and a real shop, and still leaves room for a loft or a heated work area. If you are not sure what size to build, start your comparison here.
- Footprint
- 30′ × 40′
- Floor area
- 1,200 sq ft
- Typical eave
- 12–14 ft
- Clear span
- 30 ft
What a 30x40 pole barn kit costs
Plan on $18K–$45K in materials for a 30x40 (1,200 sq ft). Industry shell-kit materials range for this footprint, from our pole barn cost guide. Labor, concrete and site work are separate.
Your exact number depends on the choices on the right. Send us the size, use and build-site zip code and we will send back an engineered price for your site — usually the same business day.
Pre-designed package
The Wheatland
Our pre-designed 30x40 shop package starts around $24,000–$28,000 in materials, depending on location, steel gauge, colors and engineering.
See The Wheatland →What moves the price
- Eave heightTaller walls mean longer columns, more steel and bigger doors.
- Doors and windowsCount and size of overhead doors is often the biggest single swing.
- Snow and wind loadsHigh-snow and high-wind counties need heavier trusses and tighter spacing.
- Steel and finishesWoodgrain or textured steel, stone wainscot and pre-finished siding.
- Porches and lean-tosCovered space on a sidewall adds cost, but far less than more building.
- Insulation and linerInterior liner panels and insulation packages for heated space.
What people build with a 30x40
- Shop and garage combination
- Three-car garage
- Hobby farm and equipment storage
- Contractor shop or storage building
Typical doors: Two or three overhead doors plus a walk door
Sizing notes from the field
- A 12 ft eave handles 10 ft overhead doors. Go to 14 ft for 12 ft doors, a pickup with a rack, a tractor with a loader, or a storage loft.
- A 30 ft clear span leaves the floor open — no posts to work around.
- Split it: 30x24 for parking and a 30x16 insulated shop behind a partition wall.
- Add a 10 or 12 ft lean-to or porch on a sidewall for covered storage or outdoor work space.
What ships in a 30x40 kit.
- Engineered trussesCustom spans up to 86′ in one piece, designed for your site’s snow and wind loads and built in Wheatland.
- Laminated columnsStraighter than solid posts, with better treatment penetration where the column meets the ground.
- Steel roofing & siding35+ colors, including textured finishes and a woodgrain, backed by a 40-year paint warranty.
- Trim & flashingRidge cap, corner trim, J-channel and drip edge, color-matched to your steel.
- Fasteners & hardwareEvery screw, bolt, bracket and closure strip the build calls for — counted, not guessed.
- Stamped engineeringSite-specific drawings for your county’s loads, ready to hand to the building department.
- Delivered on our trucksOur flatbeds, our drivers, with an onboard forklift to set materials where your crew wants them.
Not included: concrete, site work, labor, insulation and interior finish. We’ll tell you exactly where the package stops before you order.
See every component →30x40 kit questions.
How much does a 30x40 pole barn kit cost?
Industry-wide, a 30x40x12 shell kit runs about $18,000 to $45,000 in materials. Our pre-designed 30x40 Wheatland shop package starts around $24,000 to $28,000, depending on location, steel gauge, colors and engineering. Labor, concrete and site work are separate.
What eave height is best for a 30x40 pole barn?
12 ft is the common choice and fits 10 ft overhead doors. Choose 14 ft if you need 12 ft doors for taller trucks or equipment, want a storage loft, or plan to add a car lift.
Can a 30x40 pole barn be insulated and heated?
Yes. Post-frame walls take batt or blanket insulation well, and many owners insulate the whole building or partition off a heated shop. Tell us your plan so the package includes the right framing and liner.
How many cars fit in a 30x40 garage?
Three vehicles fit comfortably, or two vehicles plus a full shop area with benches and tool storage.
What is included in a 30x40 kit from Western?
Engineered trusses, laminated columns, steel roofing and siding, trim and flashing, fasteners and hardware, framing for doors and windows, and stamped engineering drawings for your site. Concrete, labor, insulation and interior finish are not included.
Do you deliver to my area?
We deliver on our own trucks to Wyoming, Colorado, Montana, South Dakota, Nebraska, Kansas, Idaho, Utah, New Mexico, Texas and Nevada.
Other pole barn kits
- 24x30720 sq fttwo-car garage, small shop, toy storage$14K–$28K typical materials range
- 30x501,500 sq ftworkshop plus parking, equipment storage$22K–$55K typical materials range
- 36x481,728 sq fthorse barn, hobby farm, ag storage$26K–$62K typical materials range
- 40x602,400 sq ftfull shop, RV storage, barndominium shell$34K–$85K typical materials range
- 40x803,200 sq ftcommercial shop, fleet building, large equipment$46K–$110K typical materials range
- 60x1006,000 sq ftmachinery storage, warehouse, arena$85K–$200K typical materials range
Price your 30x40.
Tell us the use, eave height you have in mind and your build-site zip code. We will engineer it for your site and send back a price.
Mon–Thu 7am–5pm, Fri 8am–3:30pm MT