16x20 Gable Shed Plans
A 16x20 gable shed gives you 320 square feet of storage and costs from $7,025 in materials. The plans for this exact size: every cut, every board to buy, 16 build steps in 3D and printable drawings.
What you get
What's inside the 16x20 plans
Part of the plan the designer makes for this 16x20 gable shed: the framing drawing of the front wall, the start of the cut list and the build steps. Change the door, windows, roof or any dimension and every number, cut and drawing is calculated again.
From the cut list
| Qty | Stock | Length | Used for |
|---|---|---|---|
| 4 | PT 4x6 | PT 4x6 @ 144" | Skid (PT 4x6 on edge, ground-contact rated) |
| 4 | PT 4x6 | PT 4x6 @ 96" | Skid (PT 4x6 on edge, ground-contact rated) |
| 16 | PT 2x6 | PT 2x6 @ 189" | Band joist (front/back), Floor joist @ 16" o.c. |
| 2 | PT 2x6 | PT 2x6 @ 128" | Rim joist |
| 2 | PT 2x6 | PT 2x6 @ 112" | Rim joist |
| 8 | PT 2x6 | PT 2x6 @ 24" | Beam splice scab |
…and 46 more lines, with the angle of every cut, plus a board-by-board cutting plan.
16 build steps, each shown in 3D
- Prepare the site
- Set the skids
- Build the floor frame
- Lay the floor
- Frame the back wall
- Frame the front wall
- Frame the side walls
- Raise and tie the walls
- Frame the roof
- Fascia and barge rafters
- Sheath the roof
- Shingle the roof
- Install the siding
- Trim
- Door and windows
- Paint and finish
Plus the full shopping list with estimated prices, sheet layouts and printable framing drawings for every wall, the floor and a full-size rafter template.
Materials list
The free shopping list for this 16x20 gable shed as shown, with LP SmartSide siding and asphalt shingles: $7,025. 51 items, 199 boards and 47 sheets.
| Item | Qty | Est. |
|---|---|---|
| PT 4x6 x 12' Pressure-treated, ground-contact (UC4A) rated. |
4 boards | $125 |
| PT 4x6 x 8' Pressure-treated, ground-contact (UC4A) rated. |
4 boards | $83 |
| PT 2x6 x 16' Pressure-treated, ground-contact (UC4A) rated. |
16 boards | $304 |
| PT 2x6 x 14' Pressure-treated, ground-contact (UC4A) rated. |
4 boards | $62 |
| PT 2x6 x 8' Pressure-treated, ground-contact (UC4A) rated. |
1 board | $9 |
| 2x8 x 12' | 4 boards | $58 |
| 2x8 x 10' | 3 boards | $36 |
| 2x6 x 16' | 14 boards | $206 |
| 2x6 x 12' | 17 boards | $173 |
| 2x6 x 10' | 19 boards | $162 |
| 2x4 x 16' | 5 boards | $50 |
| 2x4 x 14' | 6 boards | $49 |
| 2x4 x 12' | 2 boards | $14 |
| 2x4 x 8' | 2 boards | $9 |
| 2x4 x 92-5/8" precut stud | 81 boards | $322 |
| 1x4 x 12' | 4 boards | $46 |
| 1x4 x 10' | 8 boards | $76 |
| 1x4 x 8' | 5 boards | $38 |
| 23/32" T&G plywood subfloor (Sturd-I-Floor) 4x8 320 sq ft net |
10 sheets | $580 |
| 15/32" CDX plywood roof sheathing 4x8 405 sq ft net |
14 sheets | $476 |
| LP SmartSide 38 Series panel 3/8" 4x9 (8" o.c. grooves) 652.5 sq ft net |
21 sheets | $1,302 |
| LP SmartSide 38 Series panel 3/8" 4x8 (8" o.c. grooves) 33.7 sq ft net |
2 sheets | $104 |
| 3/4" crushed stone, bulk (delivered) 4" compacted pad, 12" past the shed on every side (+15% for compaction) |
5.75 cu yd | $316 |
| Auger ground anchor 30" with strap One at each corner, strapped to the rim joist: a shed on skids can slide or lift in high wind |
4 each | $72 |
| Aluminum drip edge 10 ft Eaves under the underlayment, rakes over it |
9 pieces | $86 |
| Architectural asphalt shingles (3 bundles = 1 square) 405 sq ft of roof + 10% waste |
14 bundles | $588 |
| Shingle starter strip (~100 lin ft) | 1 bundle | $48 |
| Hip & ridge cap shingles (~33 lin ft) | 1 bundle | $68 |
| #15 felt underlayment roll (~400 sq ft) | 2 rolls | $60 |
| 1" plastic cap nails (box of 2,000) | 1 box | $24 |
| 1-1/4" galvanized roofing nails 5 lb 4 nails per shingle (6 in high-wind areas) |
3 boxes | $51 |
| 16d (3-1/2") galvanized framing nails 5 lb (~240) ~2368 nails: 6 per framing piece + 1 per 8" of plate/rim |
10 boxes | $240 |
| #9 x 2-1/2" exterior deck screws 5 lb (~450) ~60 screws per floor sheet |
2 boxes | $76 |
| Subfloor adhesive 28 oz | 5 tubes | $40 |
| 8d ring-shank galvanized nails 5 lb (~450), roof sheathing ~60 nails per roof sheet |
2 boxes | $52 |
| 8d hot-dip galvanized siding nails 5 lb (~450) ~70 nails per siding panel |
4 boxes | $108 |
| 6d galvanized casing nails 1 lb (~150) 148 lin ft of trim |
2 boxes | $16 |
| 3" exterior structural screws (50) For splice scabs |
2 boxes | $32 |
| 10d (3") galvanized common nails 1 lb (~70) ~322 nails: rafter toenails, jack and nailer studs, collar ties |
5 boxes | $35 |
| Hurricane tie, ZMAX/G185 galvanized for treated lumber (Simpson H2.5AZ or equal) One at every rafter-to-plate seat, plus the floor-to-beam corners |
40 each | $54 |
| 10d x 1-1/2" hot-dip galvanized connector nails 1 lb (~100) Use only connector nails in metal connectors |
4 boxes | $44 |
| 8" heavy-duty T-hinge | 6 each | $54 |
| Safety hasp 4-1/2" | 1 each | $9 |
| Door pull handle | 2 each | $16 |
| Barrel bolt 6" Top and bottom of the fixed leaf |
2 each | $14 |
| Shed window for 24" x 36" rough opening Rough opening 24" x 36" on the left wall |
1 each | $123 |
| Exterior acrylic paint 2 coats over ~802 sq ft |
5 gallons | $240 |
| Exterior paintable caulk 10 oz Seal trim edges and panel joints |
10 tubes | $70 |
| Z-flashing 10 ft Over every door/window head and at horizontal siding joints |
5 pieces | $45 |
| House wrap 9 ft x 100 ft Weather barrier behind the siding (LP requires one behind its panel siding) |
1 roll | $140 |
| 4" window flashing tape 75 ft Seals the window flanges to the house wrap |
1 roll | $22 |
| Optional / recommended | ||
| Landscape fabric 3 ft x 50 ft Under the gravel to stop weeds |
3 rolls | $66 |
Prices are typical US big-box estimates and vary by region and season. Check your local store.
Similar sizes
- 16x16 Gable Shed plans
256 sq ft · from $6,139 - 12x20 Gable Shed plans
240 sq ft · from $5,904 - 14x16 Gable Shed plans
224 sq ft · from $5,644 - 12x18 Gable Shed plans
216 sq ft · from $5,561 - 10x20 Gable Shed plans
200 sq ft · from $5,519 - 12x16 Gable Shed plans
192 sq ft · from $5,201
Questions
How much does it cost to build a 16x20 gable shed?
Between $7,025 (LP SmartSide siding and asphalt shingles) and $7,730 (board and batten siding and a metal roof) in materials at typical US big-box prices, before tax and delivery. Prices vary by region.
How much lumber do I need for a 16x20 gable shed?
About 199 boards (1811 board feet) and 47 sheets of plywood, OSB or siding, depending on the options you choose.
How tall is a 16x20 gable shed?
About 13' 5-15/16" overall, standing on its gravel base, with walls framed from standard precut studs.
Is a 20x16 shed the same as a 16x20?
Same footprint: 320 square feet whether you write it 16x20, 20x16 or 16 x 20. This plan puts the 16-foot wall at the front with the door. If you want the door on the 20-foot wall, set width 20 and depth 16 in the free calculator and the plan is calculated again for that.
Change the size or options in the free calculator.
Full made-to-measure plans
Every size from 4' to 20', gable or lean-to, as many designs as you like: $37 once, not a book of fixed sizes.
$37 one-time, lifetime access
Get my 16x20 plans, $37Cut list · Board-by-board cutting plan · Shopping list · 3D build steps · Printable drawings · 60-day money-back guarantee
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