How does the turnkey cost comparison differ between post-frame, steel, and stick-frame?

Post-frame pole barn homes generally offer the lowest shell cost ($30–$42/sq ft) and slab cost due to simplified perimeter footings. Red-iron and cold-formed steel barndominiums offer high clear-span durability ($42–$55/sq ft shell). Conventional 2x6 stick framing provides traditional residential framing ($48–$65/sq ft shell). Turnkey finishes typically range from $115 to $195/sq ft depending on regional labor and finish grade.

Can I pre-fill my exact building footprint dimensions?

Yes. Pass query parameters ?width=W&length=L (or ?w=W&d=D) in the URL to immediately configure this calculator for any dimension from 16x24 to 60x100.

Does this include foundation, slab, and interior finish costs?

Yes. The calculator details shell kit fabrication, concrete slab and monolithic footings, rough mechanicals (HVAC, plumbing, electrical), and living interior drywall and flooring finishes.

Interactive Structural Cost Engine

Turnkey House & Barndominium Cost Calculator

Compare dried-in shell kits, foundation concrete, mechanical rough-ins, and turnkey interior finishes across Post-Frame Pole Barns, Engineered Steel Barndominiums, and 2x6 Conventional Stick-Frame construction.

Structural Framing Cost Comparator

30' × 40' (1,200 sq ft) • 900 sf Heated + 300 sf Shop

Width30'

Depth40'

Shop / Garage Bay Share25% (300 sf Shop)

Sidewall Eave Height

Regional Cost Multiplier

Project Management Mode

Lowest Upfront Cost

Post-Frame (Pole Barn Shell)

$140,856

$117/sq ft complete • Dry-In: 2–3 Weeks

Dried-In Shell:$43,656

Foundation / Slab:$12,600

MEP & Finishes:$84,600

Clear-Span Wood Trusses (8' o.c.)

Fastest dry-in, lowest shell & pier foundation cost, ideal for DIY owner-builders.

Maximum Durability & Span

Red-Iron / Cold-Formed Steel

$162,264

$135/sq ft complete • Dry-In: 3–4 Weeks

Dried-In Shell:$59,064

Foundation / Slab:$16,200

MEP & Finishes:$87,000

Bolt-Up Clear-Span Steel (10'–20' bays)

Non-combustible, zero rot/termite risk, lower insurance rates, supports 40'–60' clear spans.

Easiest Conventional Appraisal

2×6 Conventional Stick-Frame

$178,968

$149/sq ft complete • Dry-In: 5–8 Weeks

Dried-In Shell:$66,768

Foundation / Slab:$16,800

MEP & Finishes:$95,400

2×6 Studs @ 16" o.c. + Interior Load Walls

Standard residential drywall/insulation cavities, familiar to all municipal inspectors and lenders.

Compare 30' × 40' Floor Plans Across All 3 Systems

Every HoolieHaus 30'×40' blueprint can be framed with post-frame columns, bolt-up steel, or 2×6 studs.

Browse 30'×40' Plans

Complementary Site Takeoff & Blueprint Tools

Carry your footprint dimensions across HoolieHaus engineering estimators

Concrete Slab & Footing Tool

Cubic yardage, perimeter turn-down footings, and rebar grids

Spray Foam Board-Foot Tool

Closed-cell vs open-cell board-feet and vapor barrier sizing

2D Floor Plan Drafter

Configure rooms, door swings, and download vector CAD (.SVG)