Hiring a contractor
If you think you may want assistance with assembling your Annex, check out our Hire a Contractor page.
Workshops
Annex
A functional, modern garage for any urban setting.
Form meets function in our newest garage: the Annex. Part of Summerwood’s Modern Styles Collection, the Annex is clean, simple, and polished, possessing the unique ability to complement any setting—while making a bold statement.
overview
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Whether you’re in desperate need of dedicated car storage, or dreaming of your very own home office — or both — the flexible floorplan can be adapted to make all your garage goals a reality.
Find everything you need to know about the Annex in these style tabs.
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illustration only
24' x 24' Annex
Features:
- Contemporary flat roof (0.5/12 pitch).- A range of sizes for plenty of storage.- Premium STK Western Red Cedar siding + stainless steel fasteners.- Enhanced siding package.- Full 2-year warranty on materials and craftsmanship.
Popular Options & Upgrades:
Additional studio/storage space
Clear cedar siding (thin, modern nickel gap or v-joint profiles)
Standing seam steel siding
Pine T&G or cedar channel interior cladding
Roller double garage door
Modern vinyl sliding doors and windows
Maintenance-free Canexel siding in a variety of colours
Maintenance-free Siparila wood siding in six natural tones
Available Annex garage sizes
The Annex is offered in sizes starting at 480 ft². If you don’t see the size you’re looking for in the price list, please contact us.
Annex Interior
Below are some Annex interiors to help you envision your layout. Click to learn more about the buildings featured. For more ideas and photos, visit our Interiors page.
Floor plans
The Annex is available in a range of layouts and sizes, with plenty of space for cars, bikes, and miscellaneous storage. Add a partition wall to create an additional, multi-functional interior space—use it as a home office or gym, a studio or workshop, or a bonus storage area!
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32’ x 24’ Annex with 8’ studio
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24’ x 24’ Annex
Sample Annex Floor Plans
Feeling inspired? Get creative with this fun, simple layout tool for planning your interior. Or, download graph paper and plan your space the old fashioned way.
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3D Tour of Annex Garage
View a 3D tour of the Annex in both urban driveway and laneway settings, illustrating a combination of standard features and construction/material upgrades. The garages shown here include modern windows and doors, clear cedar and standing seam siding, and an optional additional interior space.
Visit our 3D Tours page to see all the Summerwood garage styles.
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Annex Garage design video tour
Assembly
Level of Difficulty:
The Annex includes easy-to-follow instructions and diagrams that will walk you through every step of the building process. Our online and telephone assembly support are always within reach.
* photos and renderings illustrate a combination of standard features and construction/material upgrades; see style tabs for detailed product specifications
details & specs
Annex Modern Garage Dimensions
| BUILDING DEPTH | SHORT WALL HEIGHT |
|---|---|
| 24' | 8' - 11" |
| 26' | 8' - 10" |
| 28' | 8' - 9" |
| 30' | 8' - 8" |
| 32' | 8' - 7" |
| 34' | 8' - 6" |
| 36' | 8' - 5" |
| 13' - 1" BUILDING HEIGHT FROM GRADE | |
| 10' STANDARD TALL WALL HEIGHT | |
| 1 : 12 STANDARD PITCH | |
* all dimensions are approximate
Still have questions about the size of your Annex? Don’t hesitate to ask — we’re here to help!
Wall Plan
Annex wall component
Our garage walls are framed with 2 x 6 spruce studs for added strength.
Roof Framing Plan
The Annex garage’s contemporary flat roof (1/12 pitch) consists of pre-engineered trusses and 5/8” T&G plywood sheathing.
Flat roofs do not always require vents. Consult your contractor or roofing company for the most effective ventilation system for your roof.
Annex roof framing plan
Foundations
Most Annex garages should be built on concrete foundation walls with footings.
Visit our Foundations page for more details, or contact one of our design specialists for assistance.
Materials
Summerwood buildings are constructed with style and longevity in mind. Like all our designs, the Annex is a fantastic display of premium grade materials chosen for their beauty, durability, and environmental friendliness.
| item | material | dimension | notes |
|---|---|---|---|
| wall plates | spruce | 2x6 | bottom, top, double top |
| wall studs | spruce | 2x6 | 16" on center |
| exterior siding | stk cedar channel (shiplap) | 1x8 | horizontal |
| enhanced siding package | osb + typar | ⁷⁄₁₆" | wall sheathing & building wrap |
| material options + upgrades | |||
| exterior siding | stk cedar channel (shiplap) | 1x8 | vertical |
| clear cedar t&g nickel gap | 1x4 or 1x6 | horizontal or vertical | |
| clear cedar t&g v-joint | 1x4 | vertical installation only | |
| canexel | ⁷⁄₁₆x12 | maintenance-free; various colors | |
| siparila wood | 1x6 | maintenance-free; 6 natural tones | |
| standing seam steel | 19 ¼" (covered) | vertical; 24-gauge galvalume plus | |
| interior siding | pine t&g | 1x6 | n/a |
| cedar channel | 1x6 | n/a | |
| enhanced siding package | plywood + typar | ¼" | wall sheathing & building wrap |
| item | material | dimension | notes |
|---|---|---|---|
| pre-eng. roof truss | spruce chords/webs + metal gusset plates | 26" - 30" | height variable based on span |
| sheathing | t&g plywood | ⅝" | n/a |
| item | material | dimension | notes |
|---|---|---|---|
| soffit | stk cedar channel | 1x8 | n/a |
| fascia + corner boards | stk cedar | varies | n/a |
| material options + upgrades | |||
| soffit | clear cedar t&g v-joint | 1x6 | n/a |
| fascia + corner boards | clear cedar | varies | n/a |
| versatex (white) | varies | n/a | |
| siparila wood (black or white) | varies | n/a | |
Enhanced Siding Package (ESP)
Your Annex includes our enhanced siding package: a layer of sheathing (OSB or plywood) and building wrap (a breathable, water-resistant air barrier) between the siding and the wall framing that give the structure shear strength and act as an additional plane of protection against moisture.
Enhanced siding package upgrade
Finishing
Once your Annex is complete, there are even more ways you can tailor your interior to suit your taste and needs. See Interior Finishing for more information.
Insulation
Planning to use your Annex year-round? There are a number of methods for insulating your garage to provide enjoyment all year long. Ask one of our design specialists for more information.
Insulation material for a prefab garage
Electrical
The inside of your Annex is ready to accommodate wiring for lighting, outlets, heating equipment, garage door openers, stationary power tools, and anything else you have in mind. Once the installation is complete and before finishing your interior, simply have an electrician come in and do their thing.
Electrical configuration example
Plumbing
Provided you have a water source nearby, your Annex can be plumbed with sinks and taps. If you have something a little more elaborate in mind, like a shower or a toilet, make sure it’s coordinated with the installation of your concrete pad and garage.
Bathroom configuration
pricing
Visit "options and accessories" for detail and pricing of our accessories.
Find below pricing for all of the Annex sizes that we have built so far. Don't see your size? Ask us and we will provide you with a quote.
Note that pricing below is for the base kit only. Doors, windows, and other options are à la cart so that you can customize to your hearts content.
Custom Designs
Summerwood will take your custom design and make it your own. If you have something different in mind, talk to one of our designers about bringing it to life.
get a professional involved
Our seasoned designers would love to help you find your ideal design.
We're just a phone call away.