A Backyard Retreat with Room to Create, Relax, or Recharge
Looking for a space that does it all? The 20x20 King Post Timber Frame with a shed roof addition blends open-air relaxation, creative workspace, and classic timber frame appeal into one smart footprint. Whether you’re building a workshop, guest retreat, or your ideal backyard hangout, this design offers function and flexibility in a layout that looks great from every angle.
Frame Dimensions:
- King Post Pavilion: 15' wide x 20' deep
- Shed Roof Extension: 5' wide x 20' deep
- Total Covered Area: 400 sq ft
- Roof Style: King post truss with shed roof wing
- Ceiling Height: Soaring open space with exposed heavy timber rafters
Use the king post area as an open-air pavilion for projects or entertaining—or enclose it to create a rustic guest cabin, creative studio, or personal retreat. The shed roof section is perfect for tool benches, storage, or a shaded porch with rockers for morning coffee or evening unwinding.
Endless Possibilities:
- Workshop or Tool Shed: Keep the king post side open for hands-on projects, with tools and supplies organized under the shed roof.
- Rustic Cabin or Guesthouse: Enclose the main frame and keep the shed wing open for outdoor living space.
- Backyard Lounge or Entertaining Area: Add lighting and furnishings to create your personal timber-framed oasis.
Buy This Plan
This plan provides detailed, easy-to-follow blueprints, perfect for anyone building their own timber frame.
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?
Get An Instant Quote
Use our online calculator to get a quote for a complete Ready-To-Raise Kit. Just need your zip code.
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.
I like the overall look and design of this frame but I need a little more length. Would it be possible to make the frame 24 feet deep so the main area is 15×24 with out an additional bent or sizing up the timbers too much?
Thanks for your questions. That would be fairly simple change you can make in the field. You will just need to increase the length of the purlins, ridge and other timbers running that direction by 24″ in both bays.
I’d like this for a sugar shack. I would like to raise the roof by 4′?, leaving the sills at 7 or 8′ and install a floor in front, remove the ridge at the back for the cupola. Is this a simple revision or does it require some head scratching and redrafting?
I think those changes are easy enough not to require any redrafting of it. If you have any questions along the way drop up a line and we will do our best to help out.
Hi there, I love the design but am thinking I may only have space for a 15’ x 20’ structure. How difficult would it be to reduce the width by 5 feet, resulting in a 10ft wide cabin and 5 ft shed? I imagine the roof pitch would have to change; would it be 12/12 then?
The roof pitch can stay the same. This would revision will need to be completed as custom plan, please contact us for this service.
Steve, here is the timber list Timber list
Hi Brice,
Is this a design that can be built and stood up by a group of strong guys without a crane?
How would I attach it to a concrete slab to use as a pavilion?
Mike
Another question:
Why are there no braces running on the 20′ side of the main structure?
I am looking to build a wood working shed. This plan is all most prefect for what I am looking for, but can 2 of the knee braces be removed at the end to allow for a 2 door, full size barn door opening? I can adjust for the other sizes since I am cutting my own wood.
That should be ok.
What are the post and principle rafter sizes for this building? I’m in need of a 20×30 building for my work shop that doesn’t use an outrageous amount of timber. I have long leaf yellow pine on my property and plan on using it for the frame. Adding a bent to this design looks rather easy and I like the purlins as they save a lot of board feet of timber. I’m trying to avoid having to cut down an additional 14 large trees just for the rafters that most of the other designs of the size I need require.
I decided to purchase a membership and I’m glad I did. This design will work out very well for my shop. All of the other plans of the right size required common rafters and massive timbers. I would have had to find and harvest dozens of trees in order to have enough material. With this plan I have the space I want and I don’t need deforest my land to do it.
Thanks for your thoughts Rick. Would love to see some pictures of your shop once you get the timbers in the air.
Could the main area have a 5-12 roof pitch and still use the same King Post design?
Gordon, the plan is designed with a 10-12 pitch over the main part. You could alter it to 5-12 and still use a king post design, but many of the timber sizes would change.
Is it possible to expand this to 30×30?
That would be possible- if you would like us to handle that for you, check out our Custom Design services
Would it be possible to replicate the porch on the opposite side and increase the size to 3m each
Yes it is. If you would like us to help you with that we do offer custom design services here.
Hi, is there an updated timber list for this plan? The link above in the comments no longer works. Also, are there any photos of this plan actually built?
Thanks
We no longer provide timber lists prior to purchase. Keep in mind we offer a 30-day satisfaction guarantee. We can tell you that this plan utilizes 2772 board feet of 8x and 6x timbers.
Also, you can go here to see the pavilion built with an additional shed roof.
Hello – do you have finished photo of this plan ?
I would like to have a visual of what it may look like after completed.
Thank you
That frame was the design in these three raising articles: Holden Norfolk Pine Milking Shed, McCall Poplar and Oak Cabin and Schaefer Cypress Party Pavilion which have photographs.