When CMHC released the full technical packages for their Housing Design Catalogue this week—complete with detailed architectural drawings, engineering specs, and cost estimates. [Link to design catalogue]. I felt a familiar mixture of hope and déjà vu. As someone who once worked as a design consultant for Hive Modular on modular housing projects with a similar concept—standardized prototypes that promised streamlined construction—I've lived through the gap between the promise and the reality.
The Promise Sounds Perfect
On paper, it makes total sense. Design once, build many times. Standardized plans that meet building codes, energy efficiency targets, and accessibility standards. Pre-reviewed by municipalities to speed up approvals. Download the technical package, find a lot, and get building.
It's the kind of solution that gets heads nodding in boardrooms and city council chambers. Finally, something practical to address our housing crisis.
Then You Meet the Ground
Here's what I learned representing architects on modular housing projects: every site has a story, and that story matters more than any prototype.
The foundation work alone would regularly derail our "standardized" approach. One lot had bedrock three feet down. Another had clay soil that required entirely different engineering. A third had grading issues that meant either expensive earthwork or redesigning the lower level. Each time, our beautiful prototype needed adaptation, which meant bringing engineers back to the table, which meant time and money.
And that's before you even get to utilities. Where's the main water line? How far is the electrical connection? Is there adequate stormwater management? These aren't small details—they're fundamental questions that can add weeks to approvals and thousands to budgets.
The Permit Process Hasn't Changed
Even when Toronto and other cities "pre-review" designs, you're still applying for a building permit. You still need site plans. You still need a qualified professional to sign off on everything. The templates give you a head start, but you're not skipping any major steps.
I remember one project where we thought we'd save months by using a pre-designed prototype. We still spent eight weeks in the permit process because of site-specific requirements and municipal questions about drainage, parking access, and setbacks. The prototype helped, but it wasn't magic.
The Real Barriers Remain
POV: The CMHC catalogue is a useful tool, but it doesn't solve our fundamental problems:
Land is expensive. A great design doesn't help if you can't afford a lot in a neighbourhood where people actually want to live.
Zoning is complex. Even with multiplex-friendly designs, finding appropriately zoned parcels with the right servicing and access isn't easy.
Labor and materials cost what they cost. Standardization might create some efficiencies, but it doesn't dramatically change the economics of construction.
Every site is different. This is the big one. The ground doesn't care about your prototype.
So Is It Worth It?
Yes—but with realistic expectations.
The CMHC catalogue is a solid starting point. It saves architects and designers from reinventing the wheel. It provides templates that meet current code and performance standards. For smaller builders or homeowners considering an accessory dwelling unit, it demystifies the process.
But it's not "plug and play." It never will be, because construction is inherently site-specific. The foundation of good housing is, quite literally, understanding what's beneath your feet.
If we want to truly address housing supply, we need to pair tools like this catalogue with broader reforms: streamlined permitting processes, better municipal coordination, land use policies that create more opportunities for missing middle housing, and realistic conversations about infrastructure investment.
The templates are helpful. But they're just one piece of a much larger puzzle.
What's been your experience with standardized housing designs or modular construction? Have you found the promise matches the reality, or have you encountered similar challenges?
About Anne Lok, Broker B. Arch, M.AAD.
Anne is a Toronto-based realtor with an architectural background, specializing in design-forward properties in historically rich neighbourhoods. She offers a customized approach for each client, helping buyers find homes that blend timeless charm with modern functionality. Anne also guides sellers in showcasing the unique appeal of their properties and assists investors in identifying opportunities with strong potential for growth.
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