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16×20 Garage shed plan

  • Uses: garage, storage, workshop, studio, home office
  • Detailed tools and materials lists
  • Itemized cut list for ordering lumber
  • Complete blueprints with easy-read measurements
  • 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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16×20 Garage Shed Overview

There are endless uses for a classic garage shed conveniently set in your backyard. This 16 x 20 garage shed is a solidly built facility that delivers plenty of space. It is a perfect option for homeowners and passionate gardeners who need ample storage space for their vehicles and other items. The shed offers a massive 320 square feet of floor space, enough for parking your car and keeping all your belongings, including ATVs, riding lawnmowers, snow blowers, rototillers, wheelbarrows, bikes, and power tools, carefully organized and protected from bad weather and elements.

The shed is set on a reinforced platform and features 8-feet wide access to bring everything inside with minimal hassle.

Even better, this outbuilding’s functional design allows you to customize it, so it serves other purposes. You can transform it into a home office, workshop, studio, or storage facility for your gardening tools and landscaping equipment with its spacious interior. It is fitted with a 6′ x 2′ 8″ door, so it will serve either purpose effectively. There are also 3′ 4″ sided square windows that let in enough light.

The two doors have sturdy ramps to allow you to wheel equipment into place. A gable-style roof crowns the sturdy structure, making it weather-tight completely.

Get this plan and build yourself a spacious garage.

Why Should You Build 16x20 Gable Garage Shed?


DIY and Save Up to $4000

A garage addition or contractor-built shed costs thousands. Build your own shed and save up to $4,000.


320 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.

Compare Free vs Premium Plan

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

16x20 Garage shed facts and figures

16x20 garage shed
16'-1 1/2" 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:
320 square feet
Instant PDF download
Plywood sheathing
Choice of paint or stain

Real People, Real Reviews.

We ask every paid customer for a review. No matter good or bad. Here is what they say!

Based on 23 reviews.
A nice set of plans to give us an idea… A nice set of plans to give us an idea of what it costs to build on site vs buying a prefab structure, and the quality differences between them. This set of plans is "bomb proof" according to my local lumberyard guy. 2x6 joists on 12" centers, compared to 2x4s on 24" centers for the prefab models. A real foundation, not just some 4x4 skids. It looks like a major amount of work, but the result could be a really nice garden shed sturdy enough to house our commercial-grade chipper as well as the big mower.
Getting my plans was so easy. Getting my plans was so easy, I picked the plan I wanted I paid for it I downloaded it instantly.
James Isbrandt
James Isbrandt
The price for plans is way too high The price for plans is way too high, but the plans are fairly decent. You DO have to know a little something about construction and adjustments of measurements, but for the most part, not too bad.
Excellent detail of materials list and… Excellent detail of materials list and constructions specifications
Rey davis
Rey davis
Excellent Excellent plans and customer support
Chad Davis
Chad Davis
Concise and Detailed The plans were concise and contained everything I needed. The images were extremely helpful as well as the cut list.
A little hard to follow in some places A little hard to follow in some places
A+++++++++++ A+++++++++++
John Turgeon
John Turgeon
The plans are missing a critical step The plans were missing a critical step, and my original message to Shedplans wasn't received. I received a message from them after posting my problem here, and they subsequently sent me the revised instructions. Very grateful for their follow-up. Now if lumber prices would just return to normal....
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16x20 garage shed plan

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