Make the most of your property with the perfect secondary dwelling.
Two ADU Options. One Big Opportunity.
When adding an Accessory Dwelling Unit (ADU) to your property in Brant, Norfolk, or Haldimand County, most homeowners face a key decision:
Should you convert your garage—or build a brand new garden suite? The answer depends on:
- Your lot size and layout
- Your budget
- Your long-term goals (family use or rental income?)
- The existing structure and municipal regulations
This article breaks it all down to help you make the best decision for your space.
What Is a Garage Conversion?
A garage conversion ADU transforms your existing garage—attached or detached—into a livable suite.
✅ Ideal for properties where the garage isn’t heavily used
✅ Lower construction costs
✅ Shorter project timelines
✅ Can often tie into existing utilities
However, you’ll still need to meet Ontario Building Code requirements like:
- Proper insulation and heating
- Minimum ceiling height
- Natural light and egress windows
- Fire separation and soundproofing
Note: Not all garages meet the code without structural upgrades—get a pro inspection first.
What Is a Garden Suite?
A garden suite, sometimes called a laneway house or detached ADU, is a self-contained home built in your backyard or side yard.
✅ Offers total privacy from the main house
✅ Flexible layouts and design features
✅ Ideal for short-term rentals or multi-generational living
✅ Adds significant resale value and curb appeal
Garden suites typically require:
- More upfront investment
- Dedicated utility connections
- A full building permit and site plan approval
Explore our Complete Guide to ADUs in Rural Ontario for more insights.
Cost Comparison Table
| Feature | Garage Conversion | Garden Suite |
| Average Cost | $80,000 – $150,000 | $150,000 – $300,000+ |
| Permitting | Faster, simpler | More complex |
| Privacy | Moderate | High |
| Rental Potential | Good | Excellent |
| Design Flexibility | Limited | Custom layouts |
Ask Frontier Building Group for a custom quote based on your lot and goals.
What to Consider Before Choosing
1. Do You Need the Garage?
If your garage is used for storage, hobbies, or parking, converting it may cause friction later.
2. Do You Have the Lot Size?
Garden suites need room for setbacks, access paths, and potential parking. Not all lots qualify.
3. Who Will Use the ADU?
If it’s for aging parents, privacy and accessibility matter. If it’s a rental unit, detached options may yield better income and reviews.
Related Reads:
- How to Apply for an ADU Permit in Brant County
- ADU Design Ideas for Aging Parents and In-Law Suites
- Can You Rent Out Your ADU on Airbnb in Norfolk County?
Still Not Sure Which ADU Is Right for You?
That’s what we’re here for. At Frontier Building Group, we help homeowners across Brant, Norfolk, Paris and Haldimand Counties make the smartest choice for their space, lifestyle, and long-term investment.
📞 Call 519.448.3946
🌐 www.frontierbuildinggroup.com
📍 Serving Brantford, Simcoe, Paris, Hamilton & more
📅 Book your free ADU consultation today.