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200 sq ft · free & unbiased

10×20 Shed Material List

A 10×20 shed is a long, generous 200 square feet — the same width as a popular 10×12 but with two thirds more length. That extra run makes it a genuine workshop-plus-storage building, or a home for longer equipment a shorter shed can't take.

How much lumber for a 10×20 shed?

Here's a shopping-ready estimate for a standard 10×20 build — 8 ft walls, studs 16" on-centre, 3-stud corners, one door and a 4/12 gable roof — with a 10% waste factor already included.

2×4 boards

121

4×8 sheets

25

Roof area

211 sq ft

Wall & roof framing

  • 2×4 wall studs (8 ft)

    45 field studs (perimeter ÷ 16" spacing) + 12 corner studs (3-stud corners) + 4 for 1 door & 0 windows

    68 boards

  • 2×4 plates (12 ft)

    180 linear ft (bottom + double top plate) ÷ 12 ft

    17 boards

  • 2×4 roof rafters (8 ft)

    32 rafters (2 planes × rows at 16" spacing)

    36 boards

Sheet goods

  • Siding / wall sheathing (4×8)

    480 sq ft of wall ÷ 32 sq ft per sheet

    17 sheets

  • Roof sheathing (4×8)

    211 sq ft of roof ÷ 32 sq ft per sheet

    8 sheets

Roofing

  • Roof area

    footprint 200 sq ft × 1.054 slope factor

    211 sq ft

  • Shingle bundles (~3 / square)

    2.11 squares × 3 bundles

    7 bundles

How these numbers are worked out

  • Perimeter of 60 ft with studs at 16" on-centre.
  • 3-stud (California) corners at all 4 corners.
  • Openings framed explicitly: +4 studs per door, +6 per window (1 door, 0 windows).
  • Walls: one bottom plate + a double top plate (3 × perimeter of 2×4 stock).
  • Sheet goods are 4 ft × 8 ft (32 sq ft each).
  • Gable roof at 4/12 pitch → 1.054× the flat footprint.
  • Asphalt shingles at 3 bundles per 100 sq ft "square".
  • A 10% waste factor is added, then each quantity is rounded up.

Building a different spec?

Change the wall height, stud spacing, roof pitch, corners, doors, and windows — and copy or print the list — in the full calculator.

Open the Material Calculator

What fits in a 10×20 shed

Long-format storage and a full workshop in one.

  • A ride-on mower or small trailer with room to spare
  • A full workbench and tool wall at one end
  • Long lumber, ladders, and kayaks down one side
  • Bulk seasonal storage at the far end

Tips for a 10×20 build

  • Split the length into zones — park at one end, work in the middle, store at the back — so the depth stays usable.
  • At 200 square feet a permit and a proper, well-drained foundation are almost always part of the plan.

Questions

10×20 shed FAQ

Straight answers on materials, capacity, permits, and cost for a 10×20 shed.

How much lumber do I need for a 10×20 shed?
For a 10×20 shed with 8 ft walls, studs at 16 inches on-centre, 3-stud corners, one door and a 4/12 roof, this calculator estimates about 68 2×4 studs, 17 boards of 2×4 plate stock and 36 roof rafters, plus roughly 17 sheets of 4×8 siding, 8 sheets of roof sheathing and 7 bundles of shingles. Those figures already include a 10% waste allowance. Adjust the spacing, pitch or openings in the calculator to match your exact design.
What can you fit in a 10×20 shed?
A 10×20 shed gives you 200 square feet. It comfortably holds a ride-on mower or small trailer with room to spare, a full workbench and tool wall at one end, long lumber, ladders, and kayaks down one side, bulk seasonal storage at the far end. Long-format storage and a full workshop in one.
Do I need a permit for a 10×20 shed?
It depends on where you live. At 200 square feet, a 10×20 shed is large enough that many areas require a building permit, but the rules also consider height, foundation, and how close the shed sits to property lines. Always confirm with your local building department before you start — thresholds vary from one place to the next.
How much does a 10×20 shed cost to build?
The material cost depends on your siding, roofing, foundation, and finishes, and labour varies widely by region — so a single figure would be misleading. Use the material list here as your starting quantities, add local prices, and treat the total as a planning estimate rather than a fixed quote.

Compare other shed sizes

Material lists for more common footprints.

4×6

24 sq ft

8×8

64 sq ft

8×10

80 sq ft

8×12

96 sq ft

10×10

100 sq ft

10×12

120 sq ft

See all shed sizes