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Barndominium Sizes Guide

30×40, 40×60 and 50×80: what fits, and what the shell may cost.

  • Free written quote
  • Building and slab quoted together
  • Serving all of Central Oklahoma
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Prefer to talk? Call 405-823-2831 or text us. Photos help; you can text them after you send.

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Roofing, metal roofing and metal building work performed by Jose's Construction, a licensed Oklahoma roofing contractor (license #80002601). ECS Enterprises Inc. handles your estimate and project coordination.

Common sizes at a glance

30×4040×6050×80Drawn to the same scale (feet).
SizeFloor areaCommon usesShell-only kit at $40–$70/sq ft [1], [2]
30×401,200 sq ftA 2–3 car shop, or a small cabin-style living area with a garage bayAbout $48,000–$84,000
40×602,400 sq ftA roomy shop, or a shop and living split such as about 1,200 sq ft eachAbout $96,000–$168,000
50×804,000 sq ftEquipment storage plus a family-size living area, or a large shopAbout $160,000–$280,000

Shell math is floor area times the published shell-only kit range. It is not our quote and leaves out the slab, site work and finish-out. Published finished, turnkey ranges run about $160–$225 per sq ft [1], [2].

Planning the shop and living split

  • Start with the shop. List what you park or store and size the bays and doors first.
  • Then the living space. Bedrooms, baths and kitchen set how much of the building gets finished out, which drives most of the total cost [1].
  • Leave room to grow. A lean-to or porch can add covered space for less than a bigger building.

Kit vs. shell vs. turnkey · Barndominium cost guide · Permits & engineering

Sources

  1. Fry Design Co, 2026 Oklahoma barndominium pricing guide
  2. Turner & Son Homes, barndominium cost in Oklahoma (2026)

How it works

What happens after you reach out

  1. You reach out
    Send the 3-field form, call or text 405-823-2831. Rough size and location are enough.
  2. We contact you
    We call or text you back to talk through use, size, doors and the site.
  3. Plan the details
    Layout, doors, insulation, slab and site work, with permit questions noted.
  4. Written quote
    You get a free written quote. If you go ahead, ECS Enterprises Inc. coordinates the build with Jose's Construction.

Your written quote

One quote for the whole project, not just the kit

Online kit prices often leave out the slab, doors, delivery and crew. We quote the complete job, itemized, so you can compare real numbers.

  • Building, slab and doors quoted together.
  • Travel included for farms, ranches and acreage across Central Oklahoma.
  • Itemized so you can change sizes or options and see what moves the price.
  • Built by Jose's Construction, a licensed Oklahoma roofing contractor.
Get my free quote
What your quote coversSample layoutBuilding size and frameW × L × wall heightConcrete slabThickness and reinforcementRoll-up and walk doorsCount and sizesInsulationIf you heat, cool or work insideDelivery and erectionCrew travel includedSite workPad, leveling, drainage

Illustration of how a quote is itemized. Your quote depends on your building and site.

Questions

Frequently asked questions

What size barndominium is most popular?

It depends on your family and what you need to park or store. Tell us your list and we will suggest sizes in your quote.

Can you quote just the shell?

Yes. We quote the shell and slab, itemized.

Who builds it?

Metal building and metal roofing work is performed by Jose's Construction, a licensed Oklahoma roofing contractor (license #80002601). ECS Enterprises Inc. handles your estimate and project coordination.

Service area

All of Central Oklahoma. We travel.

Serving all of Central Oklahoma: the OKC metro and surrounding counties. We travel to farms, ranches and acreage across the region.

Oklahoma CityEdmondNormanGuthrieKingfisherEl RenoChickashaShawneeChandlerPerkinsPurcellPauls ValleyMarlowPragueHennesseyTecumsehBlanchardMincoLindsayWe travel across the region

Map is approximate. Not sure if we come to you? Call 405-823-2831.

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Ready for a free, no-obligation estimate?

Call, text or use the 30-second form. Serving all of Central Oklahoma.

Get my free estimate Call 405-823-2831