Customized to your needs
Choose the footprint, roof, foundation, siding, doors, windows, colors, and interior layout that work for you.
Instant 12×20 shed plans
Customize an instant 12×20 shed or workshop plan for your property, with local zoning checked automatically and coordinated, permit-ready drawings.
Instant 12×20 shed plans, customized for your property
Use the footprint as a starting point, then coordinate the roof, foundation, openings, materials, site placement, and drawing package.
Designed for your property
HomeCat coordinates shed dimensions, overall height, setbacks, access, and placement with the space available in your yard.
Zoning checked automatically
Add your location and HomeCat checks the property rules that can affect shed size, height, use, and placement.
Permit- and HOA-ready plans
Get a coordinated drawing package for permit or HOA review, including the site plan when the project needs one.
See it before you build
Review the shed in 3D while you refine the layout, openings, materials, and details before committing to construction.
Drawings and material planning
Carry one design into floor plans, elevations, foundation and framing drawings, plus material and cost-planning inputs.
Example plans for shed permits
See how exterior design, wall framing, and roof framing come together in a clear shed permit drawing package.
How to customize 12×20 Shed Plans with HomeCat
- 1
Describe the shed you want
Start with a popular plan or tell HomeCat the size, use, roof style, and look you have in mind.
- 2
Add your property
Enter the project location so the design can account for zoning, setbacks, height limits, and permit requirements.
- 3
Customize every detail
Adjust the footprint, foundation, doors, windows, siding, roofing, and layout while reviewing the shed in 3D.
- 4
Get your plan package
Save the final design and get coordinated drawings for construction, permitting, or HOA approval.
12×20 Shed Plans FAQ
Does a 12×20 shed need a building permit?
In many places, yes. At 240 square feet it exceeds common exemption thresholds. Confirm permits, setbacks, lot coverage, height, foundation, loads, electrical work, and proposed use.
Can a 12×20 shed use a skid foundation?
Some sites allow a designed, anchored skid base on well-drained stone. Length, soil, frost, wind, workshop use, and local code may instead require a permanent foundation.
Is 12×20 large enough for a workshop?
Yes for many home workshops. The long footprint can separate equipment and material handling near the doors from a bench and storage zone at the rear.
How should the inside be organized?
Keep the entrance flexible for equipment and materials. Place the primary bench near daylight and use shallow storage opposite it to retain a generous working aisle.