Plan HG-1868•Garage with Loft / Apartment Above•40' × 30' Footprint

1,200 Sq Ft (30x40) 3 Bed 2 Bath Garage with Loft / Apartment Above Floor Plan with Apartment Above (Drive-Through Carriage Loft + Primary Suite)

1,500 sq ft heated living + 900 sq ft 1-bay shop • 3 Bedrooms, 2 Baths • Free 2D CAD Blueprint (.SVG)

Download Free CAD (.SVG)

Room Dimensions & Zones

40' × 30' Shell

1-BAY GARAGE

900 sq ft

30'-0" × 30'-0"

UTILITY & GEAR

135 sq ft

10'-0" × 13'-6"

FOYER & STAIRS

165 sq ft

10'-0" × 16'-6"

PRIMARY SUITE

224 sq ft

16'-0" × 14'-0"

BEDROOM 2

196 sq ft

14'-0" × 14'-0"

FULL BATH

140 sq ft

10'-0" × 14'-0"

LIVING & DINING

280 sq ft

17'-6" × 16'-0"

KITCHEN & ISLAND

200 sq ft

12'-6" × 16'-0"

STAIR LANDING

160 sq ft

10'-0" × 16'-0"

Build Cost Estimator

Estimated Cost to Build (40' × 30' Garage with Loft / Apartment Above)

Region:

Shell / Building Kit

$76,500 – $98,000

Framing package, roof trusses & exterior shell for 1,200 sq ft base.

Owner-Builder

$170,500 – $223,500

Saves ~$76,500 by managing local slab & interior trades.

Turnkey Builder

$247,000 – $300,000

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

Est. Monthly Payment

$1,419 / mo

$218,800 financed (30-Yr)

Down Payment:20%

Interest Rate:6.75%

Free Vector CAD Blueprint • Plan HG-1868

Download 40' × 30' Garage with Loft / Apartment Above 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 (29 yd³), roof surface (~1,615 sq ft), wall framing & architectural notes

Building Package	Specification	Quantity	Est. Range
Structural Shell & Trusses	40'×30' 2x6 Lower Walls + 14" Engineered Wood I-Joist Floor System	1,200 sq ft shell kit	$76,500 – $98,000
Concrete Slab & Grade Beams	6" Reinforced Garage Slab w/ Perimeter Footings & Apron	29 Cubic Yards (4,000 PSI)	$13,250 – $17,000
Roofing & Underlayment	Dormered Gable or Gambrel Roof (8:12 / 4:12 Shed Dormers) (8:12 Pitch)	16 Roofing Squares (1,600 sq ft)	$6,720 – $10,880
Closed-Cell Spray Foam / Insulation	3" Closed-Cell Wall & Roof Deck Thermal Envelope (R-21 to R-38)	12,120 Board Feet	$16,362 – $22,422
Windows & Exterior Doors	Low-E Argon Black Architectural Glazing + Insulated Overhead Shop Door(s)	9 Windows • 8 Doors	$9,050 – $14,220
HVAC & Multi-Zone Mini-Split	High-SEER2 Heat Pump / Ductless Mini-Split System	3 Ton (36,000 BTU/hr)	$7,800 – $12,300

Exterior Perimeter

140 Linear Ft

Interior Partitions

~202 Linear Ft

Est. Concrete Slab

29 Cubic Yards

Roof Deck Area

~1,615 Sq Ft

Plan HG-1868 (1,200 Sq Ft (30x40) 3 Bed 2 Bath Garage with Loft / Apartment Above Floor Plan with Apartment Above (Drive-Through Carriage Loft + Primary Suite)) is an IRC R304/R310-vetted garage with loft / apartment above blueprint engineered around a 40'-0" × 30'-0" structural grid (1,200 sq ft base footprint, 0.75:1 Square-Bay Proportion). Configured on the Drive-Through Carriage Loft + Primary Suite topology, this layout delivers 1,500 sq ft of conditioned residential living area paired with a 900 sq ft fire-separated workshop/garage bay and 105 sq ft of covered outdoor porch deck.

Inside the conditioned envelope, the floor plan is organized into 9 distinct architectural zones: 1-BAY GARAGE (30'-0" × 30'-0", 900 sq ft), UTILITY & GEAR (10'-0" × 13'-6", 135 sq ft), FOYER & STAIRS (10'-0" × 16'-6", 165 sq ft), PRIMARY SUITE (16'-0" × 14'-0", 224 sq ft), BEDROOM 2 (14'-0" × 14'-0", 196 sq ft), FULL BATH (10'-0" × 14'-0", 140 sq ft). Plumbing rough-ins are consolidated across UTILITY & GEAR, FULL BATH, KITCHEN & ISLAND to minimize sub-slab trenching and manifold pipe runs. Sleeping quarters (PRIMARY SUITE at 224 sq ft; BEDROOM 2 at 196 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 2x6 lower walls + 14" engineered wood i-joist floor system bearing on 140 linear feet of 6" exterior wall framing (~187 framing studs/posts) and 202 linear feet of interior partitions. The 8:12 dormered gable or gambrel roof (8:12 / 4:12 shed dormers) requires approximately 1,615 sq ft of roofing material (16 roofing squares), while the 6" reinforced garage slab w/ perimeter footings & apron pours at an estimated 29 cubic yards of 4,000-PSI concrete.

Frequently Asked Questions • Plan HG-1868

Building costs, foundation specs, egress & CAD customization questions

How much does it cost to build the 40x30 1,200 Sq Ft (30x40) 3 Bed 2 Bath Garage with Loft / Apartment Above Floor Plan with Apartment Above (Drive-Through Carriage Loft + Primary Suite) (HG-1868)?

Based on current national residential construction data for garage with loft / apartment above structures, the dried-in structural shell for Plan HG-1868 (1,200 sq ft base footprint) ranges from $76,500 to $98,000 ($38/sq ft baseline). A complete turnkey build—including the 29-yard concrete foundation, 202 linear feet of interior framing, MEP rough-ins for 2 bath(s), and interior finishes across 1,500 sq ft of heated space plus the 900 sq ft shop bay—ranges from $247,000 to $300,000. 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 1,500 sq ft 3-bedroom layout?

Plan HG-1868 features 9 architecturally solved spaces inside its 40' × 30' footprint: 1-BAY GARAGE (30'-0" × 30'-0", 900 sq ft), UTILITY & GEAR (10'-0" × 13'-6", 135 sq ft), FOYER & STAIRS (10'-0" × 16'-6", 165 sq ft), PRIMARY SUITE (16'-0" × 14'-0", 224 sq ft), BEDROOM 2 (14'-0" × 14'-0", 196 sq ft), FULL BATH (10'-0" × 14'-0", 140 sq ft), LIVING & DINING (17'-6" × 16'-0", 280 sq ft), KITCHEN & ISLAND (12'-6" × 16'-0", 200 sq ft), STAIR LANDING (10'-0" × 16'-0", 160 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' × 30' 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" × 30'-0" structural grid (140 LF perimeter) with clear-span 8:12 trusses, a local structural engineer or building kit supplier can adapt the blueprint for 2x6 Lower Walls + 14" Engineered Wood I-Joist Floor System, 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-1868?

Downloading Plan HG-1868 provides the high-resolution scalable vector floor plan (.SVG) with crisp architectural lineweights, exterior dimension strings (40'-0" × 30'-0"), room-by-room callouts, door swing arcs, and window schedules, plus instant browser printing for contractor bidding and preliminary municipal zoning review.