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12×20 Lean to storage shed plan

  • Uses: storage, workshop, studio, pub, home office
  • Full materials list, including hardware
  • Full cut list for the lumberyard
  • Step-by-step blueprints for beginners
  • Color renderings to check your progress
  • Instructions for siting and installing the foundation
  • Guide for building doors from scratch
  • Diagrams for installing a gutter system
  • Ready-to-print plans for easy reference


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12x20 Storage shed facts and figures

12x20 lean to storage shed
12' W x 20' L x 9'-9 3/4" 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 Lean to Storage Shed Overview

If you have accumulated a lot more stuff than your garage can hold, this 12×20 storage shed might be perfect for you. The shed provides 240 square feet, enough to keep your riding lawn mowers, sports equipment, garden tools, power tools, outdoor furniture, and other valuables organized and protected from the elements. For your long-handled items, like shovels, garden hoes, and rakes, the 8′ – 5 1/2″ height shed’s walls are tall enough to allow you to keep such tools off the floor. 

The shed has a 5-feet 4-inch wide opening that allows easy access and hassle-free movement, even when carrying bulky items and supplies. A sturdy 5″ – 5 1/2″ length ramp has been included to allow you to easily wheel bulky items into place. 

Whatever items and machines you want to store, great attention to detail has been delicately intertwined into every aspect of this shed to ensure structural integrity. The shed has also been designed with versatility in mind. It is ideally suited for a backyard workshop, home office, blogger’s writing space, daycare center mud-pie kitchen, a small bakery, or any other creative use imaginable. 

With its lean-to roof, the shed will effortlessly blend with other structures on your property. Because it is wooden, you can even paint it to match other outbuildings and your house. 

Why Build Your Own 12x20 Lean to Storage Shed?


DIY and Save Up to $3.500

Buying a ready-made shed from a retailer or hiring a carpenter to build one costs big bucks. Building a shed yourself can save you up to $3,500.


240 sq. ft. Extra Storage Space

With all that extra storage space, you can clear out a considerable amount of stuff in your house. Declutter your life and reclaim your home for rest and relaxation.


Increase Property Value

Wooden sheds are designed to last, and an attractive one will boost your property value. Future buyers will love this addition as much as you do.

Compare Free vs Premium Plan

Check out the main benefits of our premium shed plans. Compare the differences and decide for yourself.

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