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Meet the

Mortise and Tenon Annex

Meet the

Mortise and Tenon Annex

Big, bold, and beautiful, the Mortise and Tenon annexes can add an overhang, porch, or enclosure to the Vermont Cabin and Two Bay Garage.

Choose Your
Mortise and Tenon Annex

Available Sizes

8x20
8x24
8x30
8x40
10x20
10x24
10x30
10x40

Mortise and Tenon Annex Features

Roof Style: Shed Roof

All About The Mortise and Tenon Annex

Big buildings need big additions! Our Vermont Cabins and Two Bay Garage use Mortise and Tenon joinery in their construction, and this series of annexes is built to match. The framing of these annexes is 8×8 rough sawn hemlock, giving these additions strength and longevity. As you choose which annex is right for you, think about how you anticipate using the extra space.

Overhang

This overhang grants you the extra space that you need while not technically adding to the interior square footage of your building, and is the simplest annex we offer. If you are looking for outdoor, covered storage or a place to relax in the shade, an overhang kit is ideal.

Porch

Much like an overhang, a porch is open air with the added benefits of having a floor system. This DIY wooden porch kit includes everything you need to add a covered porch with floor decking to your Vermont Cabin or Two Bay Garage. 8×8 rough sawn hemlock mortise and tenon wall framing with angle braces, hemlock rafters, corrugated metal roof, and aluminum flashing are used. Many Jamaica Cottage Shop buildings come with a porch, but not all do. Adding a porch is a wonderful way to incorporate useable outdoor lounging space with your cottage, garage, or cabin. All buildings can be enhanced by adding a solid post and beam porch. Set up some chairs or a hammock along the porch to enjoy the warm sunny days right from the comfort of your backyard. A large porch adds a welcome aesthetic style to many building models.

Enclosure

With walls on all sides, the Mortise and Tenon Enclosure is the perfect solution if you want to make our timber frame Vermont Cabins and the Two Bay Garage includes everything you need to add an extra room to your post and beam building. Purchase this kit to create additional rooms, a workshop, or an enclosed storage area. For those who are working from home, the kit could be installed on the garage to be used as an office that is separate from a living area.

20x30-two-bay-garage-sliding-barn-doors-(6)
20-by-30-foot rustic timber frame cabin with green roof, one enclosed overhang, one porch overhang, windows, and green trees.

Build Your Mortise and Tenon Annex:

Select the options you’d like to see below and then click “Configure Now” to customize and add to cart.

Pick your Size

Pre-Cut Kit

Pre-Cut Kit
10x40
Shell | Pre-Cut Kit
$ 16,656
  • Footprint: 400 SQFT
  • Overall Dimensions: 10x40
  • Roof Pitch: 3/12
  •  

Pre-Cut Kit

Pre-Cut Kit
10x30
Shell | Pre-Cut Kit
$ 12,492
  • Footprint: 300 SQFT
  • Overall Dimensions: 10x30
  • Roof Pitch: 3/12
  •  

Pre-Cut Kit

Pre-Cut Kit
10X24
Shell | Pre-Cut Kit
$ 9,993
  • Footprint: 240 SQFT
  • Overall Dimensions: 10X24
  • Roof Pitch: 3/12
  •  

Pre-Cut Kit

Pre-Cut Kit
10x20
Shell | Pre-Cut Kit
$ 8,328
  • Footprint: 200 SQFT
  • Overall Dimensions: 10x20
  • Roof Pitch: 3/12
  •  

Pre-Cut Kit

Pre-Cut Kit
8x40
Shell | Pre-Cut Kit
$ 13,401
  • Footprint: 320 SQFT
  • Overall Dimensions: 8x40
  • Roof Pitch: 3/12
  •  

Pre-Cut Kit

Pre-Cut Kit
8x24
Shell | Pre-Cut Kit
$ 8,041
  • Footprint: 192 SQFT
  • Overall Dimensions: 8x24
  • Roof Pitch: 3/12
  •  

Pre-Cut Kit

Pre-Cut Kit
8x30
Shell | Pre-Cut Kit
$ 10,051
  • Footprint: 240 SQFT
  • Overall Dimensions: 8x30
  • Roof Pitch: 3/12
  •  

Pre-Cut Kit

Pre-Cut Kit
8x20
Shell | Pre-Cut Kit
$ 6,701
  • Footprint: 160 SQFT
  • Overall Dimensions: 8x20
  • Roof Pitch: 3/12
  •  

FREQUENTLY ASKED QUESTIONS

What is a Pre-Cut Kit? What is included in this package?

The Pre-Cut lumber package has all the framing members cut and ready for assembly. It includes siding, roofing, pre-dimensioned trim, and fastening hardware. Many designs also include windows and doors. The floor system, walls and rafters have all been cut, color-coded and part numbered. The detailed cut list coincides with the color-coded exploded view. The head scratching has been removed, the headaches of finding the correct angles and the aggravation of starting from scratch has all been simplified. The kit is geared to a do-it-yourself homeowner with beginner-to-beginner knowledge of carpentry.

Should I buy a Pre-Cut Kit or Fully Assembled Building?

We design our kits to be organized and easy to understand. If you have basic carpentry skills and are looking to save money, a kit is a great idea for you. We ship our kits  all across the continental USA and part of Canada.

If you live within our Northeast delivery area, you are able to purchase many of our buildings Fully Assembled. You’ll save time and have the peace of mind that your cottage is being built by expert craftsmen.

What is a Complete Shell and What Comes With It?

A complete shell is an uninsulated building. As a kit, it includes everything required to assemble the building including hardware, precut framing, siding and roofing as well as doors and windows. Hardware, millwork sheathing and DIY plans have been enclosed. Each piece is color coded and part numbered. The exact itemization of what is inserted can be found on the specifications tab of the website for each product page design.

What is the difference between a 3-Season and 4-Season Insulation package?

3-Season –A three-season kit prepares the building for interior finishing. It includes the complete shell plus vapor barrier, solid roof sheathing and insulated floor system. A three season building seals the structure from humidity and moisture protecting from the environment, insects and rodents.

4-Season – Best for year-round comfort. The package includes everything a 3 season does with the addition of insulated thermal pane millwork, wall and roof insulation and pine interior sheathing.

Can I Customize My Building?

Yes! When you purchase your building, you have the option to pick siding, roofing, and flooring options to upgrade or modify your building. Read more about what options we offer.

If you are looking for some very special customizations to one of our buildings, our cottage designers can help. Contact our custom shop team to build a bespoke cottage.

How Can I Pay? Do You Offer Financing?

We accept Master Card, American Express, Discover Card and Visa, Cash, Personal Check, Financing, ACH transfers, Wire transfers, and PayPal. There are so many ways to purchase your dream cottage!

We also offer easy financing options, including a 50% now, 50% later option. See financing page.

Free Shipping for Pre-Cut Kits

We are proud to ship our kits all over the continental USA and to parts of Canada. To qualify for free shipping, you must have a business address and appropriate equipment for offloading your kit. Go to our shipping policy for more details

Fully Assembled Buildings

We deliver to customers within a 200 mile radius of our shop in Londonderry Vermont. This area includes New Hampshire, Massachusetts, Rhode Island, Connecticut, and some parts of Maine, New York, New Jersey, Pennsylvania, and of course, Vermont.