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20×24 Heavy Timber Outbuilding

20x24 King Post Timber Frame Perspective

Whether you need a two-bay garage, a guest house, or a spacious workshop, the 20x24 Heavy Timber Outbuilding delivers versatility, beauty, and enduring strength. Featuring classic king post trusses and handcrafted joinery, this structure blends function with architectural character.

Design Highlights:

  • Footprint: 20' x 24' (480 sq ft between the posts)
  • Ceiling Volume:
    • Plate height over 9 feet
    • Ridge height well over 13 feet (with a standard 6:12 pitch)
  • Roof Pitch Options: Drawings included for 3:12 to 12:12 pitches to customize ceiling volume and exterior appearance
  • Joinery Details:
    • Gracefully curved king post trusses and knee braces
    • Spline joinery in beams and scarf joints in plates for traditional strength and beauty
  • Heavy Timber: Sturdy posts and trusses built to last for generations

Flexible Uses:

  • Two-Bay Garage
  • Guest House or Tiny Home
  • Workshop or Studio
  • Outdoor Pavilion or Event Space

Depending on the roof pitch you choose, there’s enough headroom to add a loft for storage or a sleeping nook—or enjoy the full volume of the high ceilings by keeping the space open.

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

Buy Plans $97

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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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27 thoughts on “20×24 Heavy Timber Outbuilding”

  1. I live in mid-Missouri. Tornadoes are the worst physical event for us. Wind is the greatest risk. Will SIPs help with stability?

    Understanding that plan users are infinitely variable in their application and implementation of this frame, what is a reasonable estimate for what is entailed for just the timbers involved?

    I will cut and erect myself. Probably on a poured concrete foundation and floor, with under floor plumbing access and safe room. SIP walls and roof with metal skin on roof. 9/12 pitch.

    Spacious floorplan with guest bedrooms and a full bath on second floor for visitors and grandkids.

    If I like it I will build two. I have three daughters. Some separation is good 🙂

  2. Yes, SIPs will help out a great deal, talk to your SIP company about the fastener schedule, adding more screws will be a big help. If you are working full time by yourself and are reasonably efficient with material handling I would give yourself 3 months if not 4. Can it be done faster, yes, but I tend to be conservative with time estimates?

  3. Katrina Williams

    Kevin, the longest timbers are the bent girts and the plates/ridges. They are 8x10x22 feet. We call for the timbers to be a bit longer than actually required to allow for checking, etc.

  4. Jeff Bakanovic

    Do you have a list of timber sizes and number used? Looking to gather my own logs and mill them.

  5. Hi – can I ask why there is a scarf joint above the brace rather than the main post?

    I would be interested in this plan if the roof pitch allows for a loft (bedroom)

    Cheers,

  6. It is better for the scarf joint not to be above a post. Here is why between the posts the unsupported timber will sag or deflect. Over the center post, the timber will crown.
    This causes this “exaggerated” wave shape effect in the timber. At the point where the sag or deflection changes to a crown is called the point of “inflection”.
    This point is where the timber is neither sagging nor crowning. It has the least amount of both forces, that happens to be over the brace.
    The plans come with all the roof pitch drawings from 3/12 to 12/12 and adding a loft is as easy adding to loft timbers. Let us know we can help sort out the loft.

  7. Richard Offermann

    Does the plan show the snow load in the specs? The county planning office won’t issue a permit without this information

  8. Richard Offermann

    Hey Brice,

    I’m looking at this plan for a shop. I can add another bent to get the length I need but county planning calls for a minimum of a 56lb snow load. I will be using yellow and ponderosa pine milled from my lot and I’m thinking of the 6/12 pitch to shorten the length of the rafters (and the size of the timbers I will need to source).

    That being said I would also need the snow loads in writing to satisfy the planning people.

  9. Katrina Williams

    We generally only provide pdfs. We actually do not have Autocad files for this plan. Thank you for asking!

  10. Yes, Gary, you can extend the overhang. It just loses some ground clearance the farther you go out.

  11. Brice
    Silly question other than pure weight is there any reason not to use full lengths for the ridge beams and skip the scarf joint totally
    Thanks Dale

  12. Brice
    Can the post that is offset on the inside of the building by simply switched to the other side it would work much better for my layout

  13. If I used 3 taller beams across the pavilion, would I still have to use the posts in the middle of all 3 beams?

  14. Matthew Stevens

    Yes, it is possible, however, half of the total roof area load comes down the king post and bears on the 20′ tiebeam. The center alone tie beam takes 25% of the total roof load. So it is vital to have an engineer review the tiebeam size before making that modification.

  15. Is the middle post really needed, it would be nice to have an open floor plan?
    Looking for something this size and look to tie into the back of my garage, 12 foot roof peak.

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