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12×18 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 windows and doors from scratch
  • Diagrams for installing a gutter system
  • Ready-to-print plans for easy reference


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12x18 Storage shed facts and figures

12x18 lean to storage shed
12' W x 18' L x 9'-9 3/4" H
Materials Cost:
$17-$24 per square foot
Plywood sheathing, clapboard siding, asphalt shingles
Roof type:
Lean to
216 square feet
Instant PDF download
Plywood sheathing
Choice of paint or stain

12x18 Lean to Storage Shed Overview

Whether you are looking for a medium outdoor storage solution or want to design a backyard sanctuary, this 12×18 storage shed encloses an incredibly versatile and multifunctional space within its robust wooden walls. The facility delivers massive 216 square feet of storage space to hold outdoor furniture, lawn care equipment, garden tools, bikes, sports gear, and more. Its 8′ – 5 1/2″ walls give you plenty of height and convenient storage space for rakes, ladders, shovels, garden hoes, and more. 

Depending on your storage needs, take advantage of the spacious interior and add drawers and shelves to maximize the shed’s capacity. 

Structurally, the shed is framed using pressure-treated lumber and built on a concrete foundation for durability. It comes with a 5-feet 4-inch wide opening and a ramp, allowing you to quickly move items in and out. 

Thanks to its versatile design, this shed is also ideally suited for a home office, pub, art studio, workshop, or firewood storage. You just have to furnish it to fit the intended use. 

Why Build Your Own 12x18 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.


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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