How to Build a Garden Shed from Scratch

Building a garden shed involves creating a level foundation, constructing a wooden frame, adding walls and roofing, then finishing with siding and doors. Most homeowners can complete this project in a weekend with basic carpentry skills.

  1. Scout and Level Your Ground. Choose a level spot at least 3 feet from property lines and check local building codes for setback requirements. Mark out your shed dimensions using stakes and string, then clear the area of grass, rocks, and debris. Level the ground using a rake and shovel, checking with a 4-foot level in multiple directions.
  2. Lay a Level Base First. Create a gravel pad by excavating 4 inches deep across the entire footprint. Fill with crushed gravel and compact with a hand tamper. Place concrete blocks or pressure-treated skids every 4 feet to support the floor joists. Ensure everything is level using shims as needed.
  3. Build the Floor Platform. Cut pressure-treated 2x8 lumber for your floor joists, spacing them 16 inches on center. Attach the rim joists using 3-inch deck screws, then install the interior joists using joist hangers. Square the frame by measuring diagonals, which should be equal. Cover with ¾-inch plywood subfloor, securing with 2-inch screws every 8 inches.
  4. Raise the Four Walls. Build wall frames on the ground using 2x4 studs spaced 16 inches on center. Cut top and bottom plates to match wall lengths, then mark stud locations. Frame the door opening with jack studs and a header made from doubled 2x6s. Assemble each wall with 3-inch screws, then raise and attach to the floor frame with construction adhesive and screws.
  5. Crown It with Roof Rafters. Cut rafters from 2x6 lumber, making bird's mouth cuts where they meet the top plate. For an 8-foot wide shed, use a 4/12 pitch for proper water runoff. Install rafters 16 inches on center, securing with hurricane ties. Add collar ties halfway up for extra strength, and install blocking between rafters at the top plate level.
  6. Seal the Roof Against Weather. Cover rafters with ½-inch plywood sheathing, starting at the bottom edge and working up with staggered joints. Install drip edge along the eaves, then roll out 15-pound felt paper from bottom to top with 6-inch overlaps. Install asphalt shingles starting with a starter course, following manufacturer's nailing patterns and maintaining proper exposure.
  7. Clad Walls for Weather Protection. Wrap the shed with house wrap for moisture protection, then install your chosen siding material. For board and batten, install vertical boards with 1x3 battens covering the gaps. For lap siding, start at the bottom and work up, maintaining consistent exposure. Add corner trim and window trim if applicable using 1x4 boards.
  8. Complete the Final Details. Build a simple door frame using 2x4s with diagonal bracing, or purchase a pre-hung door. Install heavy-duty hinges and add a handle and latch. Install any windows in their rough openings using shims and exterior caulk. Add gutters if desired, and apply exterior stain or paint to protect the wood from weather.