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12×20 Garage shed plan

  • Uses: garage, storage, workshop, studio, office
  • Detailed tools and materials lists
  • Complete blueprints with easy-read measurements
  • Numbered instructions suitable for beginners
  • Color images to enhance text directions
  • Plans for building a stable foundation and heavy-duty floor platform
  • Options to build your own garage door or install a lift door
  • Plans for additional doors and windows
  • Diagrams for installing vents and entry ramp


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12x20 Garage shed facts and figures

12x20 garage shed
12' W x 20'-1 1/2" L x 11'-6" H
Materials Cost:
$17-$24 per square foot
Plywood sheathing, clapboard siding, asphalt shingles
Roof type:
240 square feet
Instant PDF download
Plywood sheathing
Choice of paint or stain

12x20 Garage Shed Overview

For homeowners who want a solidly built storage shed packed with value, this 12 x 20 garage shed is worth considering. The shed offers 240 square feet of floor space, which is plentiful enough to park your car and store a few more items. It has an extra-wide 8′ x 7′ ¼” opening that allows you to drive your vehicle in and out with minimal risks of scratching its sides. You can also bring in lawn care machines, workbench, wheelbarrows, bicycles, and anything you think can go inside. Its tall siding walls are ready to accommodate long-handled tools and equipment.

The shed is also designed to serve other functions perfectly. You can use it as an office, workshop, or studio. It is outfitted with a 2 feet 8 inches front door that offers access anyone would need for a home office. There are also two square windows with 3′ 4″ sides which let sufficient light inside.

The shed is engineered to last, and its wooden walls can be finished to your exact specification for better looks. The gable roof adds to its overall classic looks. As with most shades, this garage shed is sure to add value and interest to your property while providing a way to protect your belongings from bad weather and elements.

Why Should You Build Your Own 12x20 Gable Garage Shed?


DIY and Save Up to $3.500

A garage addition or contractor-built shed costs thousands. Build your own shed and save up to $3,500.


240 sq. ft. Extra Space

Garage overflowing with equipment? Give it all a new home in a dedicated garage shed, and park your car where it belongs.


Increase Property Value

Outbuildings add value to your property, and homebuyers love the durability of a wooden shed to protect their belongings.

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