Plan HG-2031•Duplex / Multi-Gen•60' × 30' Footprint

1,800 Sq Ft (30x60) 3 Bed 2 Bath Duplex / Multi-Gen Floor Plan

1,800 sq ft heated living • 3 Bedrooms, 2 Baths • Free 2D CAD Blueprint (.SVG)

Download Free CAD (.SVG)

Room Dimensions & Zones

60' × 30' Shell

UNIT A SUITE

250 sq ft

18'-6" × 13'-6"

UNIT A BATH

155 sq ft

11'-6" × 13'-6"

UNIT A LIVING

305 sq ft

18'-6" × 16'-6"

UNIT A KITCHEN

190 sq ft

11'-6" × 16'-6"

UNIT B BATH

155 sq ft

11'-6" × 13'-6"

UNIT B SUITE

250 sq ft

18'-6" × 13'-6"

UNIT B KITCHEN

190 sq ft

11'-6" × 16'-6"

UNIT B LIVING

305 sq ft

18'-6" × 16'-6"

Build Cost Estimator

Estimated Cost to Build (60' × 30' Duplex / Multi-Gen)

Region:

Shell / Building Kit

$72,000 – $92,000

Framing package, roof trusses & exterior shell for 1,800 sq ft base.

Owner-Builder

$185,500 – $244,500

Saves ~$83,500 by managing local slab & interior trades.

Turnkey Builder

$269,000 – $328,000

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

Est. Monthly Payment

$1,549 / mo

$238,800 financed (30-Yr)

Down Payment:20%

Interest Rate:6.75%

Free Vector CAD Blueprint • Plan HG-2031

Download 60' × 30' Duplex / Multi-Gen 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 (33 yd³), roof surface (~2,184 sq ft), wall framing & architectural notes

Building Package	Specification	Quantity	Est. Range
Structural Shell & Trusses	60'×30' 2x6 Exterior + Double-Stud Insulated Acoustic Party Wall	1,800 sq ft shell kit	$72,000 – $92,000
Concrete Slab & Grade Beams	Monolithic Concrete Slab w/ Dual Sewer/Water Stub-Outs	33 Cubic Yards (4,000 PSI)	$18,250 – $23,250
Roofing & Underlayment	Architectural Shingle or Standing Seam Metal Hip/Gable (5:12 Pitch)	26 Roofing Squares (2,600 sq ft)	$10,920 – $17,680
Closed-Cell Spray Foam / Insulation	3" Closed-Cell Wall & Roof Deck Thermal Envelope (R-21 to R-38)	11,340 Board Feet	$15,309 – $20,979
Windows & Exterior Doors	Low-E Argon Black Architectural Glazing + 36" Fiberglass Entry	4 Windows • 6 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

180 Linear Ft

Interior Partitions

~173 Linear Ft

Est. Concrete Slab

33 Cubic Yards

Roof Deck Area

~2,184 Sq Ft

Plan HG-2031 (1,800 Sq Ft (30x60) 3 Bed 2 Bath Duplex / Multi-Gen Floor Plan) is an IRC R304/R310-vetted duplex / multi-gen blueprint engineered around a 60'-0" × 30'-0" structural grid (1,800 sq ft base footprint, 0.5:1 Square-Bay Proportion). Configured on the STC-60 Mirrored Acoustic Party-Wall Duplex topology, this layout delivers 1,800 sq ft of conditioned residential living area and 360 sq ft of covered outdoor porch deck.

Inside the conditioned envelope, the floor plan is organized into 8 distinct architectural zones: UNIT A SUITE (18'-6" × 13'-6", 250 sq ft), UNIT A BATH (11'-6" × 13'-6", 155 sq ft), UNIT A LIVING (18'-6" × 16'-6", 305 sq ft), UNIT A KITCHEN (11'-6" × 16'-6", 190 sq ft), UNIT B BATH (11'-6" × 13'-6", 155 sq ft), UNIT B SUITE (18'-6" × 13'-6", 250 sq ft). Plumbing rough-ins are consolidated across UNIT A BATH, UNIT A KITCHEN, UNIT B BATH, UNIT B KITCHEN to minimize sub-slab trenching and manifold pipe runs. Sleeping quarters (UNIT A SUITE at 250 sq ft; UNIT B SUITE at 250 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 60' clear-span width utilizes 2x6 exterior + double-stud insulated acoustic party wall bearing on 180 linear feet of 6" exterior wall framing (~193 framing studs/posts) and 173 linear feet of interior partitions. The 5:12 architectural shingle or standing seam metal hip/gable requires approximately 2,184 sq ft of roofing material (26 roofing squares), while the monolithic concrete slab w/ dual sewer/water stub-outs pours at an estimated 33 cubic yards of 4,000-PSI concrete.

Frequently Asked Questions • Plan HG-2031

Building costs, foundation specs, egress & CAD customization questions

How much does it cost to build the 60x30 1,800 Sq Ft (30x60) 3 Bed 2 Bath Duplex / Multi-Gen Floor Plan (HG-2031)?

Based on current national residential construction data for duplex / multi-gen structures, the dried-in structural shell for Plan HG-2031 (1,800 sq ft base footprint) ranges from $72,000 to $92,000 ($40/sq ft baseline). A complete turnkey build—including the 33-yard concrete foundation, 173 linear feet of interior framing, MEP rough-ins for 2 bath(s), and interior finishes across 1,800 sq ft of heated space—ranges from $269,000 to $328,000. 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 1,800 sq ft 3-bedroom layout?

Plan HG-2031 features 8 architecturally solved spaces inside its 60' × 30' footprint: UNIT A SUITE (18'-6" × 13'-6", 250 sq ft), UNIT A BATH (11'-6" × 13'-6", 155 sq ft), UNIT A LIVING (18'-6" × 16'-6", 305 sq ft), UNIT A KITCHEN (11'-6" × 16'-6", 190 sq ft), UNIT B BATH (11'-6" × 13'-6", 155 sq ft), UNIT B SUITE (18'-6" × 13'-6", 250 sq ft), UNIT B KITCHEN (11'-6" × 16'-6", 190 sq ft), UNIT B LIVING (18'-6" × 16'-6", 305 sq ft). Every habitable room meets or exceeds IRC R304 minimum area (70+ sq ft) and minimum horizontal dimension (7'-0"+) requirements.

Can this 60' × 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 60'-0" × 30'-0" structural grid (180 LF perimeter) with clear-span 5:12 trusses, a local structural engineer or building kit supplier can adapt the blueprint for 2x6 Exterior + Double-Stud Insulated Acoustic Party 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-2031?

Downloading Plan HG-2031 provides the high-resolution scalable vector floor plan (.SVG) with crisp architectural lineweights, exterior dimension strings (60'-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.