30×40 Post and Beam Barn Plan


This 30x40 post and beam barn plan is  a sizable structure with simplified joinery.  Each level has 1200 square feet, which  means 2400 enclosed square feet for you to utilize - make it your barn or barn home!  You can add plenty of windows  on the gable ends because of the queen post construction. 

There are a few timber frame elements in this post and beam barn. The top plates are lengthened by a scarf joint. And there are shallow housings for the knee braces, although no tenons. Most connections are made with Timberlinx connectors and structural screws. This frame allows you to  enjoy the strength and character of  heavy timbers without having to cut intricate joinery.

  • This is a full two story frame. 
  • Top of the lower girt is over 9 feet tall. 
  • Top plate is17’-3” tall 
  • Top of rafters stands at 26’-5 1.2”
  •  Stair well location determined by purchaser. 

We will email you links to download the PDF plan sets as soon as you make your purchase.  The 11-page construction set has plenty of 2D and 3D drawings - axonometrics, floor, loft and roof plans, and sections, elevations and details. The piece drawing has 22 pages set showing  you every timber in the frame with each cut you need to make. And it’s keyed to the production diagram so you kow where everything belongs. We also include timber and connector lists so you know exactly what you need to purchase.

For more information about this plan please visit its page at 30x40 Post and Beam Barn.  This plan is included in our Plan Bundle.

30x40 Post and Beam Barn Plan (53885) Interactive 3d Model
30x40 Post and Beam Barn Plan (53885) - Plan Overveiw
30x40 Post and Beam Barn Plan (53886) - Piece Overveiw

100% Money Back Guarantee for 30-Days

Purchase With Confidence...It's Risk Free!

If, for any reason, you don't like this plan, you can get a full refund anytime within 30 days after your purchase. If you have any issues, just get in touch with our support team and they'll either help you out until you get the results you need or give you a swift refund.

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

Customer understands that HVAC, Plumbing & Electrical will not be included in all plans.

Plan Licensing Agreement:

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 reproduction or modifications of our designs, 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.



  • 30’ wide by 40’ long outside of post to outside of post
  • No overhangs on any  side (intended to be constructed with SIP roofing panels)
  • Height to Top of Plate 17’-3”
  • Height to Peak of Roof 26’-5 ½ ” with 10:12  Roof Pitch


  • Posts –8×8
  • Girts – 8×12, 8×16
  • Rafters – 6×8
  • Plates – 8×18
  • Tie Beams – 8×10
  • Braces – 4×8
  • Total of 8032 Board Feet


  • 35 pages total
  • Construction Drawings – 12 pages (11×17)
  • Detailed Piece Drawings – 22 pages (11×17)
  • Materials Lists – 2 pages (8 1/2×11)

30-Day Guarantee

We are so confident that you’ll love the plan, we stand behind it 100% with our 30-Day Money-Back Guarantee. It means you have 30 days to initiate a return with us for any reason.

It’s the best Return and Warranty Policy of any company in the business. You can buy from us with full confidence that we’ll be here to help if something goes wrong, or if the plan just doesn’t end up working out for you.

Return Policy

Our money-back guarantee gives you 30 days to decide whether this plan is everything you hoped for. If for some reason it’s not working out, you can return it for a full refund. Here’s how that works:

Email us within 30 days of placing your order. We will refund you the full purchase price of this plan.

And remember, if you have any issues whatsoever with your plan, even if you’re not sure you want to return it, please get in touch with us personally. We want you and every other Timber Frame HQ customer to have the best possible experience with us.

Please note the 30-Day Guarantee is for individual plan purchases and not for our Timber Frame Plan Bundle or other plan bundles for which we do not offer refunds due to the nature of the product.

Timber Kit


Customer Reviews

Based on 2 reviews
Murdock MacGregor
Wonderfully detailed plans at a great price!

Great customer service. I initially purchased the 24’x36’ plans but then decided on the 30’x40’ plans the next day. They immediately refunded the cost of the 24’x36’ before I even ordered the 30’x40’ plans. I have also asked several questions that were immediately answered. I highly recommend them. I’ve already started milling the lumber!

Chad Carvey
Great website and products!

Thank goodness for Timberframe HQ helping keep the rich legacy of timber-frame building alive and thriving. Great service, support, and my plans and toolkit are top notch!

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