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What's an ADU?

If you've been dreaming of adding more space to your home without the stress of moving, an ADU might be exactly what you need. ADU stands for Accessory Dwelling Unit. You might also hear people refer to them as granny suites, laneway homes, or a backyard guest house. Whatever name you use, they all serve the same purpose: adding smart, flexible living space right where you are.

Whether you're welcoming family, setting up a private home office, or building a rental unit for extra income, a backyard ADU is one of the smartest investments you can make. It offers a stylish, private, and versatile solution that enhances your lifestyle without having to relocate.

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Types of ADUs:

  • Detached ADU: a standalone structure in your backyard, perfect for maximum privacy and full independence.
  • Attached ADU: connected to your main home, designed to complement the primary residence with a separate entrance and living space.
  • Interior Conversion ADU: an existing basement, attic, or other space converted into a separate living unit.
  • Junior ADU: a compact unit attached to the primary house, often sharing facilities between the two.

Your choice depends on your property size, budget, and local zoning laws. No matter the format you choose, the freedom and flexibility of a prefab ADU makes it a game-changer for modern living.

Design Ideas for Your ADU

Designing your ADU is your chance to get creative. These spaces are compact by nature, so every square foot matters. A smart design makes all the difference.

Here are some popular ways homeowners use their prefabricated ADUs:

  • A cozy guest house or in-law suite
  • A private rental unit for passive income
  • A dedicated home office with a room to relax
  • A peaceful yoga or wellness space
  • A bright art studio or craft room
  • A space for multigenerational living

And the best part? With Summerwood, you're in full control of the design. Our fully customizable prefab ADU kits let you create a space that fits your exact needs. You pick the size, layout, doors, windows, and all the little details. We’ll help you bring it all together, your way. 

Summerwood's Prefab ADU Kits

Backyard Man Cave - Modern Interior of a Urban Studio  - Prefab kit

Among all our designs, the Quadra is one of our top picks for a prefab ADU. With its sleek, modern structure with clean lines and contemporary details, it's a perfect fit for backyards, side lots, or even tight urban laneways.

Looking for something with a bit more traditional? The Canmore adds rustic charm to any property, while the Cheyenne offers a spacious, classic look that's ideal for granny suites.

All our prebuilt ADU kits are made with premium, sustainably sourced materials and designed to last. Whether you plan to build it yourself or bring in a contractor, we're here to guide you every step of the way.

I am extremely pleased with the Urban Studio. My experience with Summerwood was excellent, from selecting the design, materials, and pricing to coordinating delivery with the logistics team and receiving assistance during the construction process.

The team was professional, responsive, and incredibly helpful throughout.
- Evelyn P.
Toronto, ON

Interior Design Tips for
Laneway Homes

Designing the interior of a laneway home means thinking small but living large. These compact spaces benefit from clean lines, neutral tones, and multi-use furniture.


Here are some tips you might find helpful:


  • Use light colors to visually open the space
  • Choose multi-purpose furniture, like Murphy beds or storage ottomans
  • Go vertical with shelving to maximize storage
  • Add personality with textiles, lighting, and greenery

With the right layout and a few smart choices, your laneway home can feel just as cozy and functional as your full-sized home - just smarter.

Why Choose a
Summerwood ADU

We've been building stunning outdoor structures for over 35 years, treating every project like it's our own. From the moment you start browsing to the day you walk in the door to your new prebuilt ADU, our team is here to make the process easy.


  • Fully customizable ADU kits designed around your needs
  • Premium materials that last season after season
  • Expert guidance on everything from zoning to finishes
  • Delivery across North America and beyond

Your backyard ADU isn't just an extra building, it's an extension of your lifestyle. Let's build something that looks incredible, feels like home, and stands the test of time.

Explore our designs, play around with our Custom Design Centre tool, or schedule your free consultation to get started.

DESIGN YOUR OWN
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