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12×18 Garden shed plan

  • Uses: storage, workshop, studio, tiny house, office
  • Full materials list, including hardware
  • Full cut list for the lumberyard
  • Easy step-by-step instructions for beginners
  • Color renderings to check your progress
  • Instructions for siting and installing the foundation
  • Guide for building windows and doors from scratch
  • Plans for decorative elements such as shutters and lattice
  • Diagrams for installing a gutter system
  • Ready-to-print plans for easy reference


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12x18 Garden shed facts and figures

12x18 garden shed
12'-1 1/2" W x 18'-1 1/2" L x 9'-9 1/4" H
Materials Cost:
$17-$24 per square foot
Plywood sheathing, clapboard siding, asphalt shingles
Roof type:
216 square feet
Instant PDF download
Plywood sheathing
Choice of paint or stain

12x18 Garden Shed Overview

Serious gardeners who want a spacious, durable, and convenient storage facility in their backyard will find this 12 x 18 garden shed very useful. The shed offers 216 square feet of floor space for storing all gardening and landscaping tools and equipment. With its spacious interior, it is ideally suited for lawnmowers, tractors, wheelbarrows, power tools, bicycles, and all sorts of landscaping gear. 9′ 9″ tall siding walls complement the spacious interior while offering sufficient height for long-handled items like shovels and rakes.

The shed comes with a 64-inch wide door which allows you to move tools and machines in and out with ease.

The shed is also suited for multiple purposes thanks to its sturdy construction and functional design. You can use it as a home office, a tiny house, a workshop, or a studio. It is outfitted with square windows with 3 feet 4 inches sides that let plenty of natural light in, so you won’t struggle to locate items inside.

The lean-to roof allows water to run off, minimizing the interior’s chances of dampness and looks great in most settings. You can even paint or stain the siding walls to your liking and add beauty to your property.

Why Build Your Own 12x18 Lean-to Garden Shed?


DIY and Save Up to $3.000

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 $3.000.


216 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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