Plan HG-1198•Barndominium•40' × 20' Footprint

800 Sq Ft (20x40) 1 Bed 1 Bath Barndominium Floor Plan with Shop (Pull-Through Shop + Split Living Core)

502 sq ft heated living + 300 sq ft 1-bay shop • 1 Bedroom, 1 Bath • Free 2D CAD Blueprint (.SVG)

Download Free CAD (.SVG)

Room Dimensions & Zones

40' × 20' Shell

1-BAY SHOP / GARAGE

300 sq ft

15'-0" × 20'-0"

PRIMARY SUITE

158 sq ft

17'-6" × 9'-0"

WALK-IN CLOSET

68 sq ft

7'-6" × 9'-0"

GREAT ROOM & DINING

171 sq ft

15'-6" × 11'-0"

BATH & MUDROOM

48 sq ft

9'-6" × 5'-0"

KITCHEN & ISLAND

57 sq ft

9'-6" × 6'-0"

Build Cost Estimator

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

Region:

Shell / Building Kit

$25,500 – $32,500

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

Owner-Builder

$58,000 – $76,000

Saves ~$26,000 by managing local slab & interior trades.

Turnkey Builder

$84,000 – $102,000

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

Est. Monthly Payment

$483 / mo

$74,400 financed (30-Yr)

Down Payment:20%

Interest Rate:6.75%

Free Vector CAD Blueprint • Plan HG-1198

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	$25,500 – $32,500
Concrete Slab & Grade Beams	4" Reinforced Monolithic Concrete Slab w/ Grade Beam (6" in Shop)	19 Cubic Yards (4,000 PSI)	$9,750 – $12,500
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)	5 Windows • 7 Doors	$6,450 – $10,300
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

~97 Linear Ft

Est. Concrete Slab

19 Cubic Yards

Roof Deck Area

~944 Sq Ft

Plan HG-1198 (800 Sq Ft (20x40) 1 Bed 1 Bath Barndominium Floor Plan with Shop (Pull-Through Shop + Split Living Core)) 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 Pull-Through Shop + Split Living Core topology, this layout delivers 502 sq ft of conditioned residential living area paired with a 300 sq ft fire-separated workshop/garage bay and 200 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 (15'-0" × 20'-0", 300 sq ft), PRIMARY SUITE (17'-6" × 9'-0", 158 sq ft), WALK-IN CLOSET (7'-6" × 9'-0", 68 sq ft), GREAT ROOM & DINING (15'-6" × 11'-0", 171 sq ft), BATH & MUDROOM (9'-6" × 5'-0", 48 sq ft), KITCHEN & ISLAND (9'-6" × 6'-0", 57 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 158 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 97 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-1198

Building costs, foundation specs, egress & CAD customization questions

How much does it cost to build the 40x20 800 Sq Ft (20x40) 1 Bed 1 Bath Barndominium Floor Plan with Shop (Pull-Through Shop + Split Living Core) (HG-1198)?

Based on current national residential construction data for barndominium structures, the dried-in structural shell for Plan HG-1198 (800 sq ft base footprint) ranges from $25,500 to $32,500 ($32/sq ft baseline). A complete turnkey build—including the 19-yard concrete foundation, 97 linear feet of interior framing, MEP rough-ins for 1 bath(s), and interior finishes across 502 sq ft of heated space plus the 300 sq ft shop bay—ranges from $84,000 to $102,000. 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 502 sq ft 1-bedroom layout?

Plan HG-1198 features 6 architecturally solved spaces inside its 40' × 20' footprint: 1-BAY SHOP / GARAGE (15'-0" × 20'-0", 300 sq ft), PRIMARY SUITE (17'-6" × 9'-0", 158 sq ft), WALK-IN CLOSET (7'-6" × 9'-0", 68 sq ft), GREAT ROOM & DINING (15'-6" × 11'-0", 171 sq ft), BATH & MUDROOM (9'-6" × 5'-0", 48 sq ft), KITCHEN & ISLAND (9'-6" × 6'-0", 57 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-1198?

Downloading Plan HG-1198 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.