Free cabin plan · PDF download
16x20 A-Frame Style Cabin Plans
A 320 sq ft cabin with a steep 12/12 roof over short 6-foot walls, giving the A-frame silhouette with more usable floor.
Plan specs
- Footprint
- 16' x 20'
- Floor area
- 320 sq ft
- Loft
- 160 sq ft (8' deep)
- Porch
- 100 sq ft (5' deep, front)
- Wall height
- 6'
- Roof
- Gable, 12/12 pitch
- Roofing
- Standing-seam metal
- Siding
- Board and batten
- Foundation
- Concrete piers
- Windows / doors
- 3 / 1
- Chimney
- Yes, for a wood stove
- Est. materials
- $13,245
Every figure here comes from the same engine the 3D builder runs, so it matches what you get when you open the plan.
About this plan
What the 16×20 A-Frame Style Cabin is for.
A true A-frame runs the roof all the way to the ground, which loses a strip of floor along each side where you cannot stand. This plan sets the same steep roof on 6-foot knee walls instead, so the full 16-foot width is usable and the silhouette still reads as an A-frame.
At 12/12 the roof rises a foot for every foot of run. That is steep enough that snow slides off metal roofing without help, and it leaves room for an 8-foot loft with real headroom.
The big back window is where the view goes. The two front windows flank the door under the porch.
Good for
- Heavy snow country, since a 12/12 roof sheds snow on its own
- A tall, open great room with a loft
- The A-frame look without losing the floor edges to the roof
The drawings
Elevations, section, and foundation.
The same views that are in the PDF, dimensioned in feet and inches. Download the PDF to print them at letter size.
Materials list
About $13,245 in materials.
Quantities come off the plan's dimensions with a 10 percent waste allowance, priced at typical U.S. retail. This is the shell only: labor, insulation, interior finishes, plumbing, and electrical are not included.
| Item | Qty | Unit | Est. cost |
|---|---|---|---|
| Foundation | $351 | ||
| Concrete pier blocksPre-cast pier blocks | 13 | ea | $195 |
| 4x4x8 treated postsPressure-treated | 13 | ea | $156 |
| Framing | $4,149 | ||
| 2x6 plates (bottom + double top)Treated bottom plate | 238 | LF | $428 |
| 2x6x8 wall studs16" OC | 92 | ea | $690 |
| 2x10 headers (doubled)Over window/door openings | 40 | LF | $112 |
| 2x10x16 floor joists16" OC | 19 | ea | $851 |
| 2x10 rim joist | 80 | LF | $224 |
| 2x8x16 ceiling joists16" OC | 19 | ea | $669 |
| 2x8x14 rafters | 38 | ea | $1,113 |
| 2x10 ridge board | 22 | LF | $62 |
| Sheathing | $1,526 | ||
| 7/16" OSB wall sheathing (4x8) | 12 | sheets | $336 |
| 1/2" plywood roof sheathing (4x8) | 22 | sheets | $770 |
| 3/4" T&G plywood subfloor (4x8) | 10 | sheets | $420 |
| Roofing | $3,261 | ||
| Metal standing seam panels | 679 | sqft | $3,056 |
| Roof underlayment (synthetic)400 sqft/roll | 2 | rolls | $100 |
| Drip edge | 105 | LF | $105 |
| Siding | $1,140 | ||
| 1x12 boardsBoard-and-batten siding | 408 | LF | $816 |
| 1x3 battens | 408 | LF | $204 |
| Housewrap9ft x 100ft rolls | 1 | rolls | $120 |
| Windows & Doors | $970 | ||
| WindowsStandard double-hung | 3 | ea | $600 |
| Window trim/casing | 3 | sets | $90 |
| Exterior doorsPre-hung exterior | 1 | ea | $250 |
| Door trim/casing | 1 | sets | $30 |
| Porch | $905 | ||
| Deck boardsPressure-treated | 111 | sqft | $333 |
| 6x6 porch posts8ft pressure-treated | 5 | ea | $125 |
| 2x8 porch joists16" OC | 94 | LF | $207 |
| Porch railing | 30 | LF | $240 |
| Loft | $680 | ||
| 2x8 loft joists16" OC spanning width | 141 | LF | $310 |
| 3/4" plywood loft floor (4x8) | 5 | sheets | $210 |
| Loft railing/guard | 20 | LF | $160 |
| Fasteners & Hardware | $263 | ||
| Nails, screws, joist hangersAssorted construction fasteners | 752 | sqft (est.) | $263 |
| Estimated materials total | $13,245 | ||
These are concept drawings for planning and estimating, not engineered or stamped plans. Have a builder or engineer check framing sizes, spans, and connections for your snow, wind, and soil conditions before you order materials.
Common questions
Building the 16×20 A-Frame Style Cabin.
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