Free shed plan

8x10 Lean To Shed Plans

10 ft wide at the tall front wall, 8 ft deep.

A single-slope shed with a tall door wall and a simple roof: every rafter is the same cut.

sq ft: 80
boards: 68
sheets: 22
offcut: 3.1%

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10 ft wide (front) by 8 ft deep, 3/12 single-slope roof, about 9' 8-1/2" to the peak.

Specifications

Footprint	10' wide x 8' deep (80 sq ft)
Roof	Lean-to (single slope), 3/12 pitch, 6" eaves
Front / back wall	8' 1-1/8" / 6' 2"
Overall height	about 9' 8-1/2" from grade to peak
Framing	2x4 walls at 16" OC, 2x6 rafters at 16" OC, 2x6 joists at 16" OC
Foundation	4 pressure-treated 4x6 skids on a gravel pad
Door	double door, 48" x 78" on the front wall (rough opening)
Windows	1 x 24" x 24" rough opening
Longest board	16 ft
Design snow load	30 psf

Notes on this design

At 3/12, asphalt shingles need two layers of underlayment. The underlayment count includes the second layer.

Foundation and floor

4 pressure-treated 4x6 skids run front to back on a compacted gravel pad. The floor joists run across them, so no joist spans more than 38-13/16". See the foundation guide for leveling and squaring.

Floor framing from above: 7 joists at 16" on center between two rim joists. Skids dashed.

Wall framing

Walls are drawn from the outside. The front and back walls run the full width and carry the rafters; the side walls fit between them and step down with the roof. The wall framing guide walks through layout and raising.

Front wall (high): 10' long, 10 full studs at 92-5/8". Tick marks under the wall are stud positions from the left end.

Front wall (high): layout marks

Marked from the left end of the bottom plate as drawn, heights from the subfloor.
Studs, left edge	0", 1-1/2", 15-1/4", 31-1/4", 33", 34-1/2", 84", 85-1/2", 95-1/4", 111-1/4", 117", 118-1/2"
Door rough opening	36" to 84" from the left end (48" wide)
Door header	2-2x6, bottom at 78", top at 83-1/2" above the subfloor

Back wall (low): 10' long, 11 full studs at 69-1/2". Tick marks under the wall are stud positions from the left end.

Back wall (low): layout marks

Marked from the left end of the bottom plate as drawn, heights from the subfloor.
Studs, left edge	0", 1-1/2", 15-1/4", 31-1/4", 47-1/4", 63-1/4", 79-1/4", 95-1/4", 111-1/4", 117", 118-1/2"

Left side wall: 7' 5" long, 7 full studs at 69-1/2". Tick marks under the wall are stud positions from the left end.

Left side wall: layout marks

Marked from the left end of the bottom plate as drawn, heights from the subfloor.
Studs, left edge	0", 11-3/4", 27-3/4", 43-3/4", 59-3/4", 75-3/4", 87-1/2"

Right side wall: 7' 5" long, 8 full studs at 69-1/2". Tick marks under the wall are stud positions from the left end.

Right side wall: layout marks

Marked from the left end of the bottom plate as drawn, heights from the subfloor.
Studs, left edge	0", 11-3/4", 27-3/4", 29-1/2", 31", 56-1/2", 58", 59-3/4", 75-3/4", 87-1/2"
Window rough opening	32-1/2" to 56-1/2" from the left end (24" wide)
Window sill	top of the rough sill at 41-1/2" above the subfloor
Window header	2-2x6, bottom at 65-1/2", top at 71" above the subfloor

Roof framing

9 2x6 rafters at 16" on center, 3/12 pitch with a 6" eave. Each rafter is notched over the front and back walls. The rafter guide shows how to lay out the pattern.

Pattern rafter: 2x6 x 112-11/16" stock, 111-5/16" plumb cut to plumb cut, birdsmouth seat 3-1/2" with a 7/8" heel.

Span checks

Member	Size	Span	Allowed	Result
Rafters	2x6	7' 8-1/2"	11' 8-7/8"deflection	OK, 52% spare
Floor joists	2x6	3' 2-13/16"	8' 7-13/16"deflection	OK, 167% spare
Door header, front wall (high)	2-2x6	4' 3"	8' 6-3/4"bending	OK, 101% spare

Checked for Spruce-Pine-Fir No. 2 with NDS design values, 30 psf snow plus 10 psf dead load, L/240 deflection for rafters (the stricter limit for roofs of 3/12 and flatter). Use a heavier snow load in the designer if your area needs it.

Shopping list

Lumber to buy	Qty
4x6 pressure-treated (ground contact)
8 ft	4
2x6 pressure-treated (ground contact)
8 ft	2
10 ft	7
2x4 framing lumber
92-5/8" precut stud	14
8 ft	1
10 ft	7
12 ft	14
16 ft	2
2x6 framing lumber
10 ft	7
16 ft	2
1x4 exterior trim board
12 ft	2
16 ft	4
1x6 exterior trim board
12 ft	2

Sheets, roofing and hardware	Buy
Sheet goods
3/4" tongue-and-groove plywood subfloor, 4x8long edge across the joists, end joints staggered	3 sheets
Panel siding (T1-11 or engineered wood), 4x8for walls short enough for 8 ft panels	7 sheets
Panel siding, 4x8walls 8' 8-3/8" tall with the floor frame: two panels stacked per 4 ft of wall, horizontal joint 7' 4-3/4" above the floor on Z-flashing	6 sheets
Panel siding for the sloped side walls, 4x8triangles nest; includes 15% for angled cuts	2 sheets
7/16" OSB roof sheathing, 4x8use H-clips between rafters at unsupported edges	4 sheets
Z-flashing for the horizontal siding joints, 10 ft pieces46' of horizontal joint: 36' at the top plate, 10' where panels stack; leave a 3/8" gap above it	5 pieces
Roofing
Asphalt shingles, 3 bundles per square0.93 squares plus 10% waste	4 bundles
Starter strip shingles20 lin ft along the eaves, counted at 100 lin ft per bundle; check the label	1 bundle
Synthetic roof underlayment, 10-square roll2.1 squares with laps	1 roll
Drip edge, 10 ft pieceseaves and rakes	5 pieces
Fasteners and hardware
Framing nails, 16d common, 3-1/2" x 0.162"about 450 nails at about 47 per lb; counted joint by joint to the IRC fastening schedule (2 per stud end, 3 per joist end), 15% spare included	10 lb
Toenail nails, 10d box, 3" x 0.128"about 350 nails at about 94 per lb; for the toenailed joints: rafters to plates, joists to skids, rake studs; 15% spare included	4 lb
Galvanized siding nails, 2-1/2" (8d)about 1,150 nails at about 90 per lb; 6" on edges, 12" in the field	13 lb
Roof sheathing nails, 2-1/2" (8d)about 250 nails at about 90 per lb; 6" on edges, 12" in the field	3 lb
Exterior screws for the subfloor, 2"about 150 screws at about 100 per lb; about 50 per sheet	2 lb
Rafter-to-plate connectors (hurricane ties)one at every rafter bearing, fixed with the nails its label calls for	18
Roofing nails, 1-1/4"about 350 nails at about 140 per lb; 4 per shingle, about 320 per square	3 lb
Construction adhesive (subfloor)one tube per 2 sheets	2 tubes
Shed ground anchorsone near each corner; check local wind rules	4

Lumber-yard takeoff

The whole shopping list on one printed page, with a box to tick for each line at the yard.

10x8 Lean-To Shed plan: lumber-yard takeoff

10' x 8' lean-to, 3/12 roof. Tick each line as it goes on the cart. theshedplanner.com

Lumber

44x6 pressure-treated (ground contact), 8 ft
22x6 pressure-treated (ground contact), 8 ft
72x6 pressure-treated (ground contact), 10 ft
142x4 framing lumber, 92-5/8" precut stud
12x4 framing lumber, 8 ft
72x4 framing lumber, 10 ft
142x4 framing lumber, 12 ft
22x4 framing lumber, 16 ft
72x6 framing lumber, 10 ft
22x6 framing lumber, 16 ft
21x4 exterior trim board, 12 ft
41x4 exterior trim board, 16 ft
21x6 exterior trim board, 12 ft

Sheet goods

3 sheets3/4" tongue-and-groove plywood subfloor, 4x8
7 sheetsPanel siding (T1-11 or engineered wood), 4x8
6 sheetsPanel siding, 4x8
2 sheetsPanel siding for the sloped side walls, 4x8
4 sheets7/16" OSB roof sheathing, 4x8
5 piecesZ-flashing for the horizontal siding joints, 10 ft pieces

Roofing

4 bundlesAsphalt shingles, 3 bundles per square
1 bundleStarter strip shingles
1 rollSynthetic roof underlayment, 10-square roll
5 piecesDrip edge, 10 ft pieces

Fasteners and hardware

10 lbFraming nails, 16d common, 3-1/2" x 0.162"
4 lbToenail nails, 10d box, 3" x 0.128"
13 lbGalvanized siding nails, 2-1/2" (8d)
3 lbRoof sheathing nails, 2-1/2" (8d)
2 lbExterior screws for the subfloor, 2"
18Rafter-to-plate connectors (hurricane ties)
3 lbRoofing nails, 1-1/4"
2 tubesConstruction adhesive (subfloor)
4Shed ground anchors

Foundation

1 rollLandscape fabric, enough to cover 12' x 10'

Site prep

1.5 cu ydGravel base: compactable crushed stone, 4" pad 1 ft wider than the shed on every side, before compactionBagged at Home Depot, Hamilton Mill store (ZIP 30011), Sep 30, 2026: $524.07 (81 bags of 0.5 cu ft at $6.47). Bulk from a landscape or building supplier is typically cheaper: East Coast Lumber & Building Supply (East Hampstead, NH) listed 3/4 in crushed stone at $69.95 per cubic yard on Sep 30, 2026, delivered in loads of 3 to 8 yards. Site prep, not in the shed materials total.

Cut list

Qty	Size	Length	Piece
Front wall (high)
2	2x4	76-1/2"	Jack stud, door
2	2x6	51"	Header ply, door (48" opening)
3	2x4	10-5/8"	Cripple above door header
10	2x4	92-5/8"	Studincludes 2 corner backer studs
2	2x4	120"	Bottom and top plate
1	2x4	120"	Cap plate (second top plate)
1	2x4	12-1/4"	Blocking behind the siding jointon edge, centered on the joint
4	2x4	14-1/2"	Blocking behind the siding jointon edge, centered on the joint
1	2x4	12-3/4"	Blocking behind the siding jointon edge, centered on the joint
1	2x4	4-3/4"	Blocking behind the siding jointon edge, centered on the joint
1	2x4	8-1/4"	Blocking behind the siding jointon edge, centered on the joint
1	2x4	4-1/4"	Blocking behind the siding jointon edge, centered on the joint
Back wall (low)
11	2x4	69-1/2"	Studincludes 2 corner backer studs
2	2x4	120"	Bottom and top plate
1	2x4	120"	Cap plate (second top plate)
Left side wall
7	2x4	69-1/2"	Stud
2	2x4	89"	Bottom and top plate
1	2x4	89"	Cap plate (second top plate)
1	2x4	3-5/16"	Rake infill stud (long point)
1	2x4	7-5/16"	Rake infill stud (long point)
1	2x4	11-5/16"	Rake infill stud (long point)
1	2x4	15-5/16"	Rake infill stud (long point)
1	2x4	19-5/16"	Rake infill stud (long point)
Right side wall
2	2x4	64"	Jack stud, window
2	2x6	27"	Header ply, window (24" opening)
1	2x4	24"	Rough sill, window
1	2x4	38-1/2"	Cripple below window sill
8	2x4	69-1/2"	Stud
2	2x4	89"	Bottom and top plate
1	2x4	89"	Cap plate (second top plate)
1	2x4	19-5/16"	Rake infill stud (long point)
1	2x4	15-5/16"	Rake infill stud (long point)
1	2x4	11-5/16"	Rake infill stud (long point)
1	2x4	7-5/16"	Rake infill stud (long point)
1	2x4	3-5/16"	Rake infill stud (long point)
Roof
9	2x6	112-11/16"	Rafter
Floor
4	4x6 PT	96"	Skid (runs front to back)
7	2x6 PT	117"	Floor joist
2	2x6 PT	96"	Rim joist (sides)
Trim
4	1x4	104-3/8"	Corner trim board
4	1x4	81-1/4"	Corner trim board
2	1x6	120"	Fascia board (eaves)
2	1x4	111-5/16"	Rake trim board

Build it in 7 steps

1
Check permits and pick the site
Confirm what your building department and zoning rules require for a 80 sq ft shed, then call 811 before you dig. Read the guide
2
Build the foundation
Level a gravel pad 1 ft wider than the shed and set 4 pressure-treated 4x6 skids 38-13/16" on center. Read the guide
3
Frame the floor
Two 8' rim joists and 7 joists at 117", 16" on center, squared by the diagonals and covered with 3/4" tongue-and-groove plywood.
4
Frame and raise the walls
Build each wall flat with 92-5/8" studs, headers over the openings and a double top plate. Raise, plumb and brace. Read the guide
5
Cut and set the rafters
Make one pattern 2x6 rafter, 111-5/16" plumb cut to plumb cut, test it, then cut 8 more. Read the guide
6
Sheathe and roof
Nail 4 sheets of 7/16" OSB, add drip edge and underlayment, then shingles.
7
Side and trim
Hang the panel siding, then the corner boards, fascia and rake trim. Fit the doors and windows and seal every cut edge.

8x10 Lean To Shed Plans

Specifications

Foundation and floor

Wall framing

Roof framing

Span checks

Shopping list

Lumber-yard takeoff

Lumber

Sheet goods

Roofing

Fasteners and hardware

Foundation

Site prep

Cut list

Build it in 7 steps

Check permits and pick the site

Build the foundation

Frame the floor

Frame and raise the walls

Cut and set the rafters

Sheathe and roof

Side and trim

Guides for this build

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