Choose the shed size and purpose
Check local building codes and permit requirements
Select a level site with good drainage
Mark the shed footprint
Clear and prepare the ground
Build or install the foundation
Construct the floor frame
Install floor joists and flooring
Build the wall frames
Raise and secure the walls
Install wall sheathing
Build and install the roof frame
Install roof sheathing
Add roofing material
Install doors and windows
Add siding or exterior cladding
Install trim and flashing
Seal gaps and weatherproof the shed
Paint or stain the exterior
Add shelving, hooks, or interior storage
Inspect the shed for stability and finish work