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18x12 Timber Frame Pavilion ISOMETRIC
18x12 Timber Frame Pavilion ISOMETRIC
18x12 Timber Frame Pavilion Exploded Isometric
18x12 Timber Frame Pavilion ISOMETRIC Birdseye
18x12 Timber Frame Pavilion Roof-Detail
18x12 Timber Frame Pavilion King Post Detail
18x12 Timber Frame Pavilion - Plan Overview
18x12 Timber Frame Pavilion- Piece Overview

18×12 Timber Frame Pavilion Plan


This lovely 18x12 timber frame pavilion plan  has so many wonderful features!  It is a great size to fit in almost any landscape, yet large enough for many purposes. Use it for a kitchen/dining pavilion, tidy workshop or backyard retreat. When you purchase this 18x12 timber frame pavilion plan, you get two-for-one! We include a full plan set designed as a freestanding pavilion, and another planned as a porch to be attached to an exterior wall of your home. The gently curved braces and embellished rafter ends will show off your framing skills

  • 18’x12’ from outside to outside of the posts. 
  • Single bay design for completely clear floor space.
  • Generous 2 foot overhangs.
  • Top of top plate +9’-3” high, top of rafters +17’-7” high.
  • 8:12 roof pitch
  • 2218 board feet  utilizing 8x8, 8x10, 6x8, 6x10 timbers

When you purchase these plans we set you up for success! Both plan sets include 10 pages full of the information you need: 3D drawings, post and rafter plans, section drawings, and detail drawings of the more complex areas of the frame. Both piece drawings sets include 17 pages showing you every cut you will make on each timber. And the pieces are labeled to match the 3D drawings on the plan sets, so you know exactly where each one fits in the frame. You will receive links to download the pdfs of the plan sets as soon as you make your purchase. They are formatted to print best on 11”x17” paper, but you can print a study set from home on letter size paper.

18x12 Timber Frame Pavilion (02218) Interactive 3D Model
18x12 Timber Frame Pavilion (02218) - Plan Overview
18x12 Timber Frame Pavilion (02218) - Piece Overview

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.



  • 18′ wide 12′ long outside of the post to outside of the post
  • 2′ overhangs on all 4 sides
  • Height to Top of Collar  8’-7 3/16″″
  • Height to Top of Top Plate 9’-3 1/2″”
  • Height to Peak of Roof 17′-7 3/16″″ w/8/12 Roof Pitch


  • Posts – 8×8
  • Bottom Chord – 8×10
  • Plate –  8×10
  • Ridge – 6×10
  • Rafters – 6×8
  • Knee Braces – 4×8, 4×10


  • 29 pages
  • Construction Drawings – 10 pages (11×17)
  •  Piece Drawings – 17 pages (11×17)
  • Connector and Timber Lists – 2 pages (8 1/2 x 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.

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