Plan HG-1090•Tiny Home on Foundation•40' × 16' Footprint

640 Sq Ft (16x40) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan

640 sq ft heated living • 1 Bedroom, 1 Bath • Free 2D CAD Blueprint (.SVG)

Download Free CAD (.SVG)

Room Dimensions & Zones

40' × 16' Shell

PRIMARY BEDROOM

175 sq ft

25'-0" × 7'-0"

BATH & LAUNDRY

105 sq ft

15'-0" × 7'-0"

GREAT ROOM & DINING

225 sq ft

25'-0" × 9'-0"

KITCHEN & ISLAND

135 sq ft

15'-0" × 9'-0"

Build Cost Estimator

Estimated Cost to Build (40' × 16' Tiny Home on Foundation)

Region:

Shell / Building Kit

$32,000 – $40,500

Framing package, roof trusses & exterior shell for 640 sq ft base.

Owner-Builder

$80,500 – $106,500

Saves ~$36,500 by managing local slab & interior trades.

Turnkey Builder

$117,000 – $143,000

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

Est. Monthly Payment

$675 / mo

$104,000 financed (30-Yr)

Down Payment:20%

Interest Rate:6.75%

Free Vector CAD Blueprint • Plan HG-1090

Download 40' × 16' Tiny Home on Foundation 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 (15 yd³), roof surface (~756 sq ft), wall framing & architectural notes

Building Package	Specification	Quantity	Est. Range
Structural Shell & Trusses	40'×16' 2x6 High-R-Value Stick Frame or Structural Insulated Panels (SIP)	640 sq ft shell kit	$32,000 – $40,500
Concrete Slab & Grade Beams	Permanent Frost-Protected Shallow Foundation (FPSF) Slab	15 Cubic Yards (4,000 PSI)	$6,750 – $8,500
Roofing & Underlayment	Standing Seam Gable or Shed Roof (4:12 Pitch)	10 Roofing Squares (1,000 sq ft)	$4,200 – $6,800
Closed-Cell Spray Foam / Insulation	3" Closed-Cell Wall & Roof Deck Thermal Envelope (R-21 to R-38)	5,400 Board Feet	$7,290 – $9,990
Windows & Exterior Doors	Low-E Argon Black Architectural Glazing + 36" Fiberglass Entry	6 Windows • 3 Doors	$5,100 – $7,980
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

112 Linear Ft

Interior Partitions

~81 Linear Ft

Est. Concrete Slab

15 Cubic Yards

Roof Deck Area

~756 Sq Ft

Plan HG-1090 (640 Sq Ft (16x40) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan) is an IRC R304/R310-vetted tiny home on foundation blueprint engineered around a 40'-0" × 16'-0" structural grid (640 sq ft base footprint, 0.4:1 Square-Bay Proportion). Configured on the Consolidated Wet-Wall + Open Great Room topology, this layout delivers 640 sq ft of conditioned residential living area and 150 sq ft of covered outdoor porch deck.

Inside the conditioned envelope, the floor plan is organized into 4 distinct architectural zones: PRIMARY BEDROOM (25'-0" × 7'-0", 175 sq ft), BATH & LAUNDRY (15'-0" × 7'-0", 105 sq ft), GREAT ROOM & DINING (25'-0" × 9'-0", 225 sq ft), KITCHEN & ISLAND (15'-0" × 9'-0", 135 sq ft). Plumbing rough-ins are consolidated across BATH & LAUNDRY, KITCHEN & ISLAND to minimize sub-slab trenching and manifold pipe runs. Sleeping quarters (PRIMARY BEDROOM at 175 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 high-r-value stick frame or structural insulated panels (sip) bearing on 112 linear feet of 6" exterior wall framing (~131 framing studs/posts) and 81 linear feet of interior partitions. The 4:12 standing seam gable or shed roof requires approximately 756 sq ft of roofing material (10 roofing squares), while the permanent frost-protected shallow foundation (fpsf) slab pours at an estimated 15 cubic yards of 4,000-PSI concrete.

Frequently Asked Questions • Plan HG-1090

Building costs, foundation specs, egress & CAD customization questions

How much does it cost to build the 40x16 640 Sq Ft (16x40) 1 Bed 1 Bath Tiny Home on Foundation Floor Plan (HG-1090)?

Based on current national residential construction data for tiny home on foundation structures, the dried-in structural shell for Plan HG-1090 (640 sq ft base footprint) ranges from $32,000 to $40,500 ($50/sq ft baseline). A complete turnkey build—including the 15-yard concrete foundation, 81 linear feet of interior framing, MEP rough-ins for 1 bath(s), and interior finishes across 640 sq ft of heated space—ranges from $117,000 to $143,000. 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 640 sq ft 1-bedroom layout?

Plan HG-1090 features 4 architecturally solved spaces inside its 40' × 16' footprint: PRIMARY BEDROOM (25'-0" × 7'-0", 175 sq ft), BATH & LAUNDRY (15'-0" × 7'-0", 105 sq ft), GREAT ROOM & DINING (25'-0" × 9'-0", 225 sq ft), KITCHEN & ISLAND (15'-0" × 9'-0", 135 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' × 16' 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" × 16'-0" structural grid (112 LF perimeter) with clear-span 4:12 trusses, a local structural engineer or building kit supplier can adapt the blueprint for 2x6 High-R-Value Stick Frame or Structural Insulated Panels (SIP), 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-1090?

Downloading Plan HG-1090 provides the high-resolution scalable vector floor plan (.SVG) with crisp architectural lineweights, exterior dimension strings (40'-0" × 16'-0"), room-by-room callouts, door swing arcs, and window schedules, plus instant browser printing for contractor bidding and preliminary municipal zoning review.