Canada's national housing agency is widening its support for factory-built housing as policymakers and market participants look for ways to accelerate delivery amid a chronic housing supply shortfall.
Canada Mortgage and Housing Corporation (CMHC) has said the country needs to roughly double housing starts over the next decade to restore affordability. The agency argues that meeting that goal will require significant productivity gains in residential construction and greater use of methods that can deliver homes faster and at scale.
In that context, CMHC has announced an expansion of its mortgage loan insurance offering to include more options for prefabricated and modular homes, targeting both individual homebuyers and multi-unit developers.
Through the new CMHC Prefab Plus product, homebuyers can purchase a factory-built home with a minimum down payment of 5% and access CMHC‑insured financing for their mortgage.
Rather than a single lump-sum advance, CMHC Prefab Plus allows borrowers to receive funds in up to four stages as construction milestones are met.
For example, a homebuyer can take an initial draw to acquire and prepare their property for a prefabricated home, then a subsequent draw once the home is delivered and ready to be installed. CMHC says this structure is designed to better align financing with the sequencing and cash-flow needs of prefabricated home construction.
The draw-based structure creates a clearer route to finance off-site builds while still benefiting from CMHC insurance, potentially reducing credit risk and supporting broader adoption of factory-built housing in both urban infill and rural markets. Prefabricated homes can be built faster and more efficiently than traditional on-site construction, with more work completed in controlled factory environments. That can shorten build timelines and, in some cases, reduce costs for builders and buyers, supporting both affordability and supply objectives.
On the multi-unit side, CMHC is moving modular construction from a pilot to a standard feature of its insured lending tools.
Modular construction involves building housing units off-site and then transporting and assembling them on the final property. Following a pilot that provided insured financing for more than 800 new rental homes using modular construction across five provinces, CMHC is expanding its multi-unit mortgage loan insurance to allow modular builds across all its multi-unit products, including its flagship MLI Select program.
One project highlighted in the pilot is 605 Studio West in Calgary, an 84‑unit affordable housing complex developed by Attainable Homes Calgary (AHC), a nonprofit social enterprise owned by the City of Calgary. Modular construction enabled 605 Studio West to be built and occupied in under one year, compared with nearly two years for a similar conventionally built project in the same community.
The policy shift means modular projects can now access the full range of CMHC multi-unit insurance products on the same basis as traditional builds. That may improve financeability, de-risk construction timelines and support more repeatable, standardized delivery models.
“By offering mortgage loan insurance for the financing of prefabricated homes and multi-unit modular construction, CMHC is committed to expanding access to homeownership and supporting the development of rental supply," said Coleen Volk, president and CEO of CMHC. "We continue to use every tool at our disposal to deliver commercial products and results for Canadians.”
Surety writers and construction brokers, CMHC’s move is another sign that prefabricated and modular building methods are becoming more mainstream within Canada’s housing supply strategy. That shift has several practical implications across the insurance value chain.
On the construction side, modular and prefab projects change the risk profile rather than removing risk. Factory production can reduce some site-based exposures, such as weather-related delays and certain workmanship issues, but introduces others, including transit risks when modules are moved, crane and installation exposures on site, and potential accumulation of high-value units in a single storage yard. Builder’s risk, cargo and liability programs need to reflect this “two-stage” process, with clear delineation of when risk transfers between manufacturer, transporter, contractor and owner.
For warranty and latent defects insurers, there is growing interest in how quality-controlled factory environments may affect long-term claims experience, particularly around water ingress, building envelope issues and mechanical systems. If modular projects can demonstrate better defect rates over time, that could support more competitive pricing or more flexible coverage terms compared with stick-built projects of similar size and specification.
CMHC’s explicit backing for prefabricated homes helps normalize these structures as acceptable collateral. Historically, some lenders and private mortgage insurers have been cautious about certain types of factory-built housing, especially if homes were difficult to finance on resale or did not clearly meet local code requirements.
Aligning modern prefab and modular projects with CMHC‑insured products should ease some of those concerns, provided homes are built on permanent foundations and comply with applicable building standards.
CMHC’s expanded support underscores the need to integrate insurance and risk engineering early in project planning. Choices about factory partners, module design, transportation routes and site assembly all have implications for construction covers and for long-term property, liability and warranty programs.
As more projects are financed under CMHC’s Prefab Plus and modular multi-unit frameworks, the ability to articulate and manage those risks will be central to securing capacity on acceptable terms.
