Meet the

Universal Annex

Meet the

Universal Annex

The Universal Annex works with almost all of our buildings. Enhance your cottage by adding an overhang, a porch, or an enclosure.

Choose Your
Universal Annex

Pre-Cut Kit

Available Sizes


Universal Annex Features

Roof Style: Shed Roof

All About The Universal Annex

If you need to add a little extra space to your Jamaica Cottage Shop building, we have three ways to do it! Our series of annexes gives you flexibility to add space that will be perfectly suited to your needs. We offer the Universal Annex series in a broad range of sizes to fit most of our Jamaica Cottage Shop buildings.


This overhang grants you the extra space that you need while not technically adding to the interior square footage of your building. Perfect for storing cords of firewood, snow removal equipment, or any other large equipment that you just don’t have room for inside your garage or shed. An overhang can be used for so much more than storage. Clear out the space, throw up some sawhorses and you’ve got a great outdoor workshop that keeps you protected from direct sun rays and rain. Consider enclosing this overhang to use as an extra room for your garage or shed. This overhang attaches seamlessly to your building, adding a nice aesthetic touch to the bearing or gable wall.


Much like an overhang, a porch is open air with the added benefits of having a floor system. Adding a porch is a wonderful way to incorporate useable outdoor lounging space with your cottage, shed, 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.


With walls on all sides, an Enclosure is the perfect solution to increasing the footprint of our storage or living versions of our small and medium sized sheds, cabins, barns and cottages. This enclosure kit includes everything you need to add an extra room to your post and beam building. Use this addition to make a workshop, mudroom, connected storage space, or simply extend the living area. Whatever reason for needing more space, this DIY porch enclosure kit will help meet your needs.

10x16 Hobby House with overhang, double doors and pressure treated ramp
a side overhang can provide shelter for storage and working.

Build Your Universal Annex:

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

Pick your Size

It seems we can't find what you're looking for.


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.

Holiday Savings on NOW
Sign up to get alerts on future sales and special pricing
Zip Code(Required)
My Contact Preference

By submitting your mobile number on this form, you agree to receive automated promotional and personalized marketing messages (i.e. cart reminders) at the phone number provided. Consent is not a condition of purchase. Reply STOP to unsubscribe or HELP for help. Message and data rates may apply. View our Terms of Service and Privacy Policy for more information.

Jamaica Cottage Shop Logo
Post and Beam Vermont Cabin and Vermonter Shed inside snowglobes decorated with bows.

Vermont Cabin & Vermonter