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20x20 Foot Timber Frame Shed
20x20 Foot Timber Frame Shed
20x20 Shed Roof Plan Roof View
20x20 Shed Roof Plan Side Angle
20x20 Shed Roof Plan Chord Closeup
20x20 Piece Drawings Plan Overview
20x20 Construction Drawings Plan Overview
Lean To Shed Plan
20x20 Lean-To Plan

20×20 Lean-To Plan


If you are looking to build an impressive structure that captures the sun, look no further than this 20×20 lean-to plan! The single-plane shed roof soars up to 16’-9”, creating a high-volume space. That big roof surface would make a great place to mount solar panels with proper orientation. Thanks to the central parallel chord truss, the 400 square feet is a clear span with no central post, so you can utilize the entire space as you wish! The four-foot deep bump-out adds more square footage and dynamic shape to this stunning 20×20 shed roof plan!

  • 4 in 12 roof pitch
  • 400 square feet with 40 square foot bump-out
  • Room to add loft in future
  • Perfect for farm storage, artist’s studio or small cabin

There are two drawing sets to give you all the information you need to build this 20×20 shed roof plan. Both sets are ready for instant download once you make your purchase. The first five-page set is formatted to be printed on 24×36 paper. These five pages include a 3D exploded isometric showing how the parts of the frame relate to each other. Then there are detailed and dimensioned plan, section and elevation drawings of all parts of the frame. We also include full timber and fastener lists, so you can budget for and purchase your materials easily. The second 33-page set of drawings is formatted to print on 11×17 paper. It shows each cut on every timber in the frame, so there is no guesswork involved!

Plan Guarantee

Important Information:

Timber Frame HQ provides plans for construction purposes but does not oversee the construction. The plan purchaser is responsible for assuring the plan meets local codes and regulations. It is the responsibility of the plan purchaser to obtain any and all structural analysis, engineering, and specifications that may be required in the municipality in which it is to be built. Plan purchaser is to verify all lot conditions and measurements before construction. Purchaser is responsible for additional expenses incurred in order to meet local code and engineering requirements.

Customer understands that the following conditions in your specific area may require additional engineering:

  1. Wind / hurricane / tornado
  2. Seismic / earthquake
  3. Heavy snow
  4. Flood potential
  5. Soil instability
  6. Timber Frame Engineering

When you purchase a set of plans, you are purchasing a limited copyright license for a design giving you the right to build that structure one time at your location. Your copyright license was granted when you paid the purchase fee. You do not have the right to build the design a second time unless you have a signed agreement with Timber Frame HQ. Please note that copyright law protects “derivative works” the same as it protects the original design. That means that making some changes doesn’t make it a new design. We do not allow modifications of our designs by others, without permission. Your copyright license does not allow another professional to represent our design work as their own.

Timber Frame HQ retains all common law, statutory and other reserved rights, including the copyright. This applies even when you have participated in the development of the design to a significant degree.

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