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20×20 Timber Frame Lean-To Shed Plan

20x20 Shed Roof Plan Color 3D

The 20x20 Clear-Span Lean-To Timber Frame offers a flexible, modern take on timber frame design. With 400 square feet of uninterrupted space and a soaring shed roof, this frame is ideal for creative living, working, or entertaining. Whether you imagine a studio, workshop, or guest cabin, this design is ready to adapt to your vision.

Frame Highlights:

  • Footprint: 20' x 20' (400 sq ft main floor)
  • Bump Out: Adds 40 sq ft of full-height space and visual interest to the facade
  • Roof Style: Single-plane shed roof soaring to over 16 feet—ideal for dramatic ceiling height and possible future loft
  • Clear-Span Design: Parallel chord truss eliminates interior posts for completely open space
  • Solar Ready: Shed roof orientation is perfect for mounting solar panels
  • Flexible Positioning: Designed to sit beautifully on flat or sloping sites; adding a porch expands outdoor living possibilities

Endless Possibilities:

  • Artist’s Studio
  • Workshop or Makerspace
  • Guest Cabin or Tiny Home
  • Open-Air Pavilion or Outdoor Entertaining Space

Whether left open for breezy gatherings or enclosed for year-round use, this frame offers unmatched flexibility.

Whether you need a creative workspace or a cozy retreat, the 20x20 Clear-Span Lean-To Timber Frame is Ready-to-Raise™ and ready to bring your vision to life.

Buy This Plan

This plan provides detailed, easy-to-follow blueprints, perfect for anyone building their own timber frame.

Buy Plans $97

Customize or Kit

Do you like this plan but need to change it a little, or do you want a complete Ready-To-Raise Kit?

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What's Included

Design and Engineering

Timber Frame Design and Engineering Services

We take immense pride in our team of exceptionally skilled timber frame designers. Each member is not only equipped with the finest tools but also possesses a profound understanding of how different materials intricately come together to realize your vision. This deep expertise in both design and material synergy is crucial in crafting the ideal timber frame structure tailored just for you.

Our commitment to excellence extends to our engineering team, specialists in timber frame structures, many of whom hold doctorates in their field. Sharing your passion for timber framing, our engineers work closely with you, ensuring that every aspect of the frame's design is customized to suit your specific location. This collaborative process guarantees that you receive all necessary documentation for permits, including detailed engineered reaction diagrams, ensuring your construction proceeds smoothly and stays on schedule.

The culmination of this meticulous process is a comprehensive set of construction drawings. These detailed plans not only provide a clear guide for your kit's assembly but also include a complete list of timbers and fasteners, serving as an invaluable reference throughout the installation of your frame. Our goal is to ensure that every step, from initial design to final construction, is seamless, transparent, and perfectly aligned with your project's needs.

Timbers, Joinery and Connections

Timber Frame Joinery and Connections Offered

After we've collaboratively chosen the ideal wood type for your project, we proceed to source the highest quality timber through our network of trusted mills. Ensuring that every piece meets our exacting standards, we then transport the timber to one of our cutting facilities. There, the joinery is meticulously crafted using CNC machines. Every joint, drilling, mortise, and tenon is cut with precision, adhering to tight tolerances for impeccable quality and fit.

Following the cutting process, all timbers are systematically labeled according to the production numbers assigned during the creation of your model and plans. This meticulous process ensures that every component of your timber frame is prepared with the utmost attention to detail, ready for the next phase of your project.

Included with your package are all the pegs, fasteners, screws, and connectors you need to put your ready-to-raise frame together. You will also get a detailed list for you to refer to while raising your frame.

Shipping and Delivery

Ready To Raise™ Timber Frame Kit Delivery

We carefully package and securely transport your timber frame and all necessary hardware directly to your location. In sync with you, we'll coordinate the delivery schedule, ensuring that we agree on an approximate time on the designated date. To facilitate a smooth and safe unloading process, it's important to have equipment on hand capable of lifting up to 5,000 lbs. Once everything is delivered and in place, the exciting phase of bringing your project to life begins.

Project Support

Timber Frame Project Manager

At Timber Frame HQ, we embrace the philosophy of 'One Person, One Project.' This approach ensures that each client is paired with a dedicated Project Manager who will be your point of contact throughout the entire project. We believe in offering personalized, consistent support to make your journey with us as smooth and fulfilling as possible.

Our commitment extends beyond just providing exceptional timber frames. As your construction resource, we'll be by your side for the duration of your project, ready to offer expert advice, support, and answers to all your queries. Our goal is to make the process of raising your timber frame not just successful, but also a deeply rewarding experience.

We invite you to visit our '
About Us' page to learn more about our values, our team, and how we can bring your timber framing vision to life with a touch of personal care and professional excellence.

View Our Interactive 3d Model 

We understand that every project is unique, so we offer extensive customization options for our plans and kits. Choose from various sizes, roof styles, and finishes to match your style and landscape. Our design team is dedicated to helping you create the perfect plan that reflects your vision. 

Here's How You Can Get Started:

  • Phone: Call us at 888-552-9379 (9–5, M–F) to speak with one of our experts.
  • Email: Send your questions to projects@timberframehq.com, and we will respond within two business days
  • Online Form: Please complete the form below, and we will respond promptly.

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13 thoughts on “20×20 Timber Frame Lean-To Shed Plan”

  1. I’m really intrigued by this design. Can the sides be bumped out 2′ on either side to make a symmetrical 20′ x 24′ footprint? This could allow for some interesting options like a spiral staircase and 2 bedrooms in the loft.

  2. Christopher Zecca

    I would love to see some of your customers’ finished products for ideas. I purchased 25 wooded acres in the mountains of NC and am planning to build an event center and 10-12 small rustic off-grid cabins. Loft bedrooms and lots of deck space.

  3. Hello,

    I’m currently building this and am more then happy to share how it turns out!

    Cheers!
    Luke

  4. Luke, I’d love to see how you finish this out! This was my creation with the incredible help of Moyer and Brice (took a great design, added the bump out and got rid of the center post so really the hard work was done!). We’re at 9200 ft elevation in Colorado and off grid so everything is taking 5 times longer than it should…we’re SO hoping to raise the timbers the fall of 2021 but I’ll be lucky to have the foundation set by then. Would like to know how you’ll wrap it and your roof system.

  5. Katrina Williams

    We would not recommend eliminating the braces without consulting an engineer. Braces are critical to the strength of any frame. Our custom design department might be able to help you- you cam find out more information on those services here.

  6. Russell R Bounds

    What are the dimensions between posts? Is it 8′ 8′ 4′ from the side and 10 between the backs, 20′ in center, and not sure about the front. Also what is the height at roof, back, front and bump out,

    thank you much.

  7. Katrina Williams

    The distance at the rear of the frame is 10′-0″ from outside to venter of the posts. The heights are 9’0″, 12′-2″, 15′-5″ and 16′-9″ tpo the top of the plates.

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