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Western Building Supply
Barndominium entry with stone veneer, pre-finished siding and timber porch posts

50x80 Barndominium Kit

A 50x80 barndominium kit is built for people who want everything under one roof: a large custom home, a real shop, and a bay tall enough for the motorhome. This is where premium finishes and careful engineering pay off.

Typical materials range$100K–$300K
Footprint
50′ × 80′
Floor area
4,000 sq ft
Typical eave
14–16 ft
Clear span
50 ft

What a 50x80 barndominium kit costs

Plan on $100K–$300K in materials for a 50x80 (4,000 sq ft). Industry range of $25–$75 per sq ft for barndominium shell materials, applied to this footprint. Interior finish, 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.

Full cost guide →

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 50x80

  • Luxury home with attached shop
  • Living quarters plus RV bay
  • Ranch home and equipment building
  • Multi-generational home

Typical doors: Residential entries and windows, plus 12–14 ft overhead doors on the shop side

Sizing notes from the field

  1. Plan about 2,500 sq ft of living space and a 1,500 sq ft shop or RV bay.
  2. A 16 ft eave fits a 14 ft RV door on the shop end.
  3. 50 ft clear-span trusses leave wide, open great rooms with no posts.
  4. Wraparound porches, stone wainscot and gable accents turn the size into curb appeal.
Western Building Supply flatbed loaded with a post-frame building package on a mountain highway

What ships in a 50x80 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 →

50x80 kit questions.

How much does a 50x80 barndominium kit cost?

Using the industry range of $25 to $75 per sq ft for shell materials, a 50x80 barndominium shell runs roughly $100,000 to $300,000. Finish level, eave height, glazing and the shop doors move the number most.

Can a barndominium include an RV garage?

Yes. Frame the shop end with a 16 ft eave and a 14 ft tall overhead door, separated from the living space by a rated wall per your local code.

Do you supply premium finishes for luxury barndominiums?

Yes. We supply Versetta Stone, Diamond Kote siding, Gerkin windows and woodgrain or textured steel in 35+ colors, all shipped with the building package.

What is included in a 50x80 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.

Western Building Supply truck hauling a post-frame building package down the highway

Price your 50x80.

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

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