Project planning

20×12 or 36×24: which pole barn guide fits your project?

Both are digital DIY guides for open shelters with single-slope roofs. They are different builds, not two sizes of an identical plan. Here is what to compare before choosing one.

At a glance
Compare20×12 guide36×24 guide
Nominal footprintAbout 20 ft long × 12 ft deep (240 sq ft)36 ft long × 24 ft deep (864 sq ft)
Open coreOpen front; six ground-set postsOpen on all sides; 12-post grid
Roof and heightSingle-slope metal roof; 10-ft front, 8-ft rearSingle-slope metal roof; 10-ft front, 8-ft rear
Optional enclosureSeparate left, right, and rear wall instructions; front stays openSeparate rear walls, side returns, and interior dividers with cladding alternatives
Download listed50-page guide PDF, 13-sheet blueprint PDF, two reference STL models56-page guide PDF, 12-sheet blueprint PDF, three reference STL models

Start with the space you need

The 20×12 guide is the smaller open-front project. The 36×24 guide covers a much larger open-sided core. Its nominal footprint is 3.6 times the smaller one, but that does not mean its materials, cost, labor, or permit requirements scale by that same factor.

Check your site, intended use, vehicle or animal clearances, access for building, and local requirements before selecting a guide. The dimensions above are nominal project descriptions, not a promise of usable interior clearance. The plans are educational DIY guidance, not stamped, site-specific engineering.

Decide on walls separately

Both guides describe an open core first and optional walls only as a later phase. Optional enclosure changes structural and ventilation considerations. Obtain local approval before adding walls; do not treat the preview model as a substitute for the written guide or blueprints.

See the matching guides

Check each current listing for the exact contents and price before purchasing. Building codes, loads, permits, material availability, and prices vary by location.