Plan HG-2448•Modular / Prefab Cottage•48' × 36' Footprint

1,729 Sq Ft (36x48) 3 Bed 2 Bath Modular / Prefab Cottage Floor Plan (Split-Bedroom Privacy Wing + Center Great Room)

1,729 sq ft heated living • 3 Bedrooms, 2 Baths • Free 2D CAD Blueprint (.SVG)

Download Free CAD (.SVG)

Room Dimensions & Zones

48' × 36' Shell

PRIMARY SUITE

312 sq ft

14'-6" × 21'-6"

EN-SUITE BATH

210 sq ft

14'-6" × 14'-6"

KITCHEN & ISLAND

320 sq ft

20'-0" × 16'-0"

GREAT ROOM

400 sq ft

20'-0" × 20'-0"

BEDROOM 2

284 sq ft

13'-6" × 21'-0"

HALL BATH

203 sq ft

13'-6" × 15'-0"

Build Cost Estimator

Estimated Cost to Build (48' × 36' Modular / Prefab Cottage)

Region:

Shell / Building Kit

$71,000 – $91,000

Framing package, roof trusses & exterior shell for 1,728 sq ft base.

Owner-Builder

$176,500 – $232,500

Saves ~$79,500 by managing local slab & interior trades.

Turnkey Builder

$256,000 – $312,000

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

Est. Monthly Payment

$1,474 / mo

$227,200 financed (30-Yr)

Down Payment:20%

Interest Rate:6.75%

Free Vector CAD Blueprint • Plan HG-2448

Download 48' × 36' Modular / Prefab Cottage 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 (31 yd³), roof surface (~2,097 sq ft), wall framing & architectural notes

Building Package	Specification	Quantity	Est. Range
Structural Shell & Trusses	48'×36' Factory-Engineered 2x6 Modular Box System w/ Marriage Wall	1,728 sq ft shell kit	$71,000 – $91,000
Concrete Slab & Grade Beams	Stem Wall Crawlspace or Full Perimeter Foundation	31 Cubic Yards (4,000 PSI)	$16,250 – $20,750
Roofing & Underlayment	Hinged 5:12 Architectural Shingle or Metal Gable Roof (5:12 Pitch)	23 Roofing Squares (2,300 sq ft)	$9,660 – $15,640
Closed-Cell Spray Foam / Insulation	3" Closed-Cell Wall & Roof Deck Thermal Envelope (R-21 to R-38)	10,750 Board Feet	$14,513 – $19,888
Windows & Exterior Doors	Low-E Argon Black Architectural Glazing + 36" Fiberglass Entry	4 Windows • 5 Doors	$3,800 – $6,020
HVAC & Multi-Zone Mini-Split	High-SEER2 Heat Pump / Ductless Mini-Split System	3.5 Ton (42,000 BTU/hr)	$9,100 – $14,350

Exterior Perimeter

168 Linear Ft

Interior Partitions

~147 Linear Ft

Est. Concrete Slab

31 Cubic Yards

Roof Deck Area

~2,097 Sq Ft

Plan HG-2448 (1,729 Sq Ft (36x48) 3 Bed 2 Bath Modular / Prefab Cottage Floor Plan (Split-Bedroom Privacy Wing + Center Great Room)) is an IRC R304/R310-vetted modular / prefab cottage blueprint engineered around a 48'-0" × 36'-0" structural grid (1,728 sq ft base footprint, 0.75:1 Square-Bay Proportion). Configured on the Split-Bedroom Privacy Wing + Center Great Room topology, this layout delivers 1,729 sq ft of conditioned residential living area and 140 sq ft of covered outdoor porch deck.

Inside the conditioned envelope, the floor plan is organized into 6 distinct architectural zones: PRIMARY SUITE (14'-6" × 21'-6", 312 sq ft), EN-SUITE BATH (14'-6" × 14'-6", 210 sq ft), KITCHEN & ISLAND (20'-0" × 16'-0", 320 sq ft), GREAT ROOM (20'-0" × 20'-0", 400 sq ft), BEDROOM 2 (13'-6" × 21'-0", 284 sq ft), HALL BATH (13'-6" × 15'-0", 203 sq ft). Plumbing rough-ins are consolidated across EN-SUITE BATH, KITCHEN & ISLAND, HALL BATH to minimize sub-slab trenching and manifold pipe runs. Sleeping quarters (PRIMARY SUITE at 312 sq ft; BEDROOM 2 at 284 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 48' clear-span width utilizes factory-engineered 2x6 modular box system w/ marriage wall bearing on 168 linear feet of 6" exterior wall framing (~179 framing studs/posts) and 147 linear feet of interior partitions. The 5:12 hinged 5:12 architectural shingle or metal gable roof requires approximately 2,097 sq ft of roofing material (23 roofing squares), while the stem wall crawlspace or full perimeter foundation pours at an estimated 31 cubic yards of 4,000-PSI concrete.

Frequently Asked Questions • Plan HG-2448

Building costs, foundation specs, egress & CAD customization questions

How much does it cost to build the 48x36 1,729 Sq Ft (36x48) 3 Bed 2 Bath Modular / Prefab Cottage Floor Plan (Split-Bedroom Privacy Wing + Center Great Room) (HG-2448)?

Based on current national residential construction data for modular / prefab cottage structures, the dried-in structural shell for Plan HG-2448 (1,728 sq ft base footprint) ranges from $71,000 to $91,000 ($44/sq ft baseline). A complete turnkey build—including the 31-yard concrete foundation, 147 linear feet of interior framing, MEP rough-ins for 2 bath(s), and interior finishes across 1,729 sq ft of heated space—ranges from $256,000 to $312,000. 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 1,729 sq ft 3-bedroom layout?

Plan HG-2448 features 6 architecturally solved spaces inside its 48' × 36' footprint: PRIMARY SUITE (14'-6" × 21'-6", 312 sq ft), EN-SUITE BATH (14'-6" × 14'-6", 210 sq ft), KITCHEN & ISLAND (20'-0" × 16'-0", 320 sq ft), GREAT ROOM (20'-0" × 20'-0", 400 sq ft), BEDROOM 2 (13'-6" × 21'-0", 284 sq ft), HALL BATH (13'-6" × 15'-0", 203 sq ft). Every habitable room meets or exceeds IRC R304 minimum area (70+ sq ft) and minimum horizontal dimension (7'-0"+) requirements.

Can this 48' × 36' floor plan be built with post-frame, red-iron steel, or 2x6 stick framing?

Yes. Because the outer envelope is engineered on an even 48'-0" × 36'-0" structural grid (168 LF perimeter) with clear-span 5:12 trusses, a local structural engineer or building kit supplier can adapt the blueprint for Factory-Engineered 2x6 Modular Box System w/ Marriage Wall, 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-2448?

Downloading Plan HG-2448 provides the high-resolution scalable vector floor plan (.SVG) with crisp architectural lineweights, exterior dimension strings (48'-0" × 36'-0"), room-by-room callouts, door swing arcs, and window schedules, plus instant browser printing for contractor bidding and preliminary municipal zoning review.