Plan HG-2759•Barndominium•40' × 20' Footprint

20' × 40' Barndo with Shop

Attached Shop + Mudroom Entry • 521 sq ft heated + 280 sq ft 1-bay shop • 2 Bed, 1 Bath

Room Dimensions & Zones

40' × 20' Shell

1-BAY SHOP / GARAGE

280 sq ft

14'-0" × 20'-0"

PRIMARY SUITE

122 sq ft

13'-6" × 9'-0"

BEDROOM 2

113 sq ft

12'-6" × 9'-0"

GREAT ROOM & DINING

176 sq ft

16'-0" × 11'-0"

BATH & MUDROOM

50 sq ft

10'-0" × 5'-0"

KITCHEN & ISLAND

60 sq ft

10'-0" × 6'-0"

Build Cost Estimator

Estimated Cost to Build (40' × 20' Barndominium)

Region:

Shell / Building Kit

$26,000 – $33,000

Framing package, roof trusses & exterior shell for 800 sq ft base.

Owner-Builder

$59,500 – $77,500

Saves ~$26,500 by managing local slab & interior trades.

Turnkey Builder

$86,000 – $104,000

Full general contractor finish including slab, HVAC, kitchen & baths.

Est. Monthly Payment

$493 / mo

$76,000 financed (30-Yr)

Down Payment:20%

Interest Rate:6.75%

Free Vector CAD Blueprint • Plan HG-2759

Download 40' × 20' Barndominium Floor Plan (.SVG)

Scalable 2D architectural vector drawing with exterior and room dimensions, door swings, and fixture layout. Opens in AutoCAD, Illustrator, Inkscape, or any browser.

Material Takeoff & Framing Specifications

Concrete volume (19 yd³), roof surface (~944 sq ft), wall framing & architectural notes

Building Package	Specification	Quantity	Est. Range
Structural Shell & Trusses	40'×20' Cold-Formed Steel / Post-Frame Clear-Span Trusses (8' o.c.)	800 sq ft shell kit	$26,000 – $33,000
Concrete Slab & Grade Beams	4" Reinforced Monolithic Concrete Slab w/ Grade Beam (6" in Shop)	19 Cubic Yards (4,000 PSI)	$10,000 – $12,750
Roofing & Underlayment	26-Gauge Standing Seam Metal Gable Roof (4:12 Pitch)	12 Roofing Squares (1,200 sq ft)	$5,040 – $8,160
Closed-Cell Spray Foam / Insulation	3" Closed-Cell Wall & Roof Deck Thermal Envelope (R-21 to R-38)	7,080 Board Feet	$9,558 – $13,098
Windows & Exterior Doors	Low-E Argon Black Architectural Glazing + Insulated Overhead Shop Door(s)	6 Windows • 6 Doors	$7,100 – $11,280
HVAC & Multi-Zone Mini-Split	High-SEER2 Heat Pump / Ductless Mini-Split System	1.5 Ton (18,000 BTU/hr)	$3,900 – $6,150

Exterior Perimeter

120 Linear Ft

Interior Partitions

~98 Linear Ft

Est. Concrete Slab

19 Cubic Yards

Roof Deck Area

~944 Sq Ft

Plan HG-2759 (800 Sq Ft (20×40) 2 Bed, 1 Bath Barndo Floor Plan with Shop) is an IRC R304/R310-vetted barndominium blueprint engineered around a 40'-0" × 20'-0" structural grid (800 sq ft base footprint, 0.5:1 Square-Bay Proportion). Configured on the Attached Shop + Mudroom Entry topology, this layout delivers 521 sq ft of conditioned residential living area paired with a 280 sq ft fire-separated workshop/garage bay and 208 sq ft of covered outdoor porch deck.

Inside the conditioned envelope, the floor plan is organized into 6 distinct architectural zones: 1-BAY SHOP / GARAGE (14'-0" × 20'-0", 280 sq ft), PRIMARY SUITE (13'-6" × 9'-0", 122 sq ft), BEDROOM 2 (12'-6" × 9'-0", 113 sq ft), GREAT ROOM & DINING (16'-0" × 11'-0", 176 sq ft), BATH & MUDROOM (10'-0" × 5'-0", 50 sq ft), KITCHEN & ISLAND (10'-0" × 6'-0", 60 sq ft). Plumbing rough-ins are consolidated across BATH & MUDROOM, KITCHEN & ISLAND to minimize sub-slab trenching and manifold pipe runs. Sleeping quarters (PRIMARY SUITE at 122 sq ft; BEDROOM 2 at 113 sq ft) are acoustically buffered from the primary living core and positioned on exterior elevations for code-compliant egress glazing.

From a builder takeoff standpoint, the 40' clear-span width utilizes cold-formed steel / post-frame clear-span trusses (8' o.c.) bearing on 120 linear feet of 6" exterior wall framing (~150 framing studs/posts) and 98 linear feet of interior partitions. The 4:12 26-gauge standing seam metal gable roof requires approximately 944 sq ft of roofing material (12 roofing squares), while the 4" reinforced monolithic concrete slab w/ grade beam (6" in shop) pours at an estimated 19 cubic yards of 4,000-PSI concrete.

Frequently Asked Questions • Plan HG-2759

Building costs, foundation specs, egress & CAD customization questions

How much does it cost to build the 40x20 800 Sq Ft (20×40) 2 Bed, 1 Bath Barndo Floor Plan with Shop (HG-2759)?

Based on current national residential construction data for barndominium structures, the dried-in structural shell for Plan HG-2759 (800 sq ft base footprint) ranges from $26,000 to $33,000 ($32/sq ft baseline). A complete turnkey build—including the 19-yard concrete foundation, 98 linear feet of interior framing, MEP rough-ins for 1 bath(s), and interior finishes across 521 sq ft of heated space plus the 280 sq ft shop bay—ranges from $86,000 to $104,000. Use the interactive Regional Cost Multiplier on this page to adjust for your local labor market and owner-builder sweat equity.

What are the exact room dimensions inside this 521 sq ft 2-bedroom layout?

Plan HG-2759 features 6 architecturally solved spaces inside its 40' × 20' footprint: 1-BAY SHOP / GARAGE (14'-0" × 20'-0", 280 sq ft), PRIMARY SUITE (13'-6" × 9'-0", 122 sq ft), BEDROOM 2 (12'-6" × 9'-0", 113 sq ft), GREAT ROOM & DINING (16'-0" × 11'-0", 176 sq ft), BATH & MUDROOM (10'-0" × 5'-0", 50 sq ft), KITCHEN & ISLAND (10'-0" × 6'-0", 60 sq ft). Every habitable room meets or exceeds IRC R304 minimum area (70+ sq ft) and minimum horizontal dimension (7'-0"+) requirements.

Can this 40' × 20' floor plan be built with post-frame, red-iron steel, or 2x6 stick framing?

Yes. Because the outer envelope is engineered on an even 40'-0" × 20'-0" structural grid (120 LF perimeter) with clear-span 4:12 trusses, a local structural engineer or building kit supplier can adapt the blueprint for Cold-Formed Steel / Post-Frame Clear-Span Trusses (8' o.c.), conventional 2x6 stick framing at 16" o.c., laminated post-frame columns at 8' o.c., or structural insulated panels (SIPs).

What files are included in the free CAD blueprint download for Plan HG-2759?

Downloading Plan HG-2759 provides the high-resolution scalable vector floor plan (.SVG) with crisp architectural lineweights, exterior dimension strings (40'-0" × 20'-0"), room-by-room callouts, door swing arcs, and window schedules, plus instant browser printing for contractor bidding and preliminary municipal zoning review.

3D Exterior Concept

20' × 40' Barndo with Shop

Est. $26,000 Kit