Prefab Multiplex Builder For Ontario’s missing middle.

Ontario’s housing market needs more density, and zoning across the province is finally catching up. Missing middle housing — duplexes, triplexes, fourplexes, and beyond — is now permitted in most urban municipalities. The challenge is delivering it efficiently enough for the numbers to work.

Prefab Builds Canada builds prefab multiplexes from duplex to 16-plex, designed for Ontario’s infill lots, priced for investors who need the pro forma to hold, and aligned with CMHC’s Apartment Construction Loan Program for rental multiplex projects.

Units

2–16

Size

800–1,400 sq ft/unit

Delivery

90–120 days

Alignment

CMHC ACLP

FAB-MULTI-04 · TYPOLOGY REFERENCE · ONTARIO

01 · WHAT WE BUILD

Duplex to 16-plex. Every unit count.

A single panelized chassis scales from a modest duplex on a residential lot through urban mid-density infill at 16 units.

Duplex

2 units — side-by-side or stacked, as-of-right on most Ontario residential lots.

Triplex & fourplex

3–4 units — permitted as-of-right across most Ontario municipalities.

Sixplex

Aligned with federal Housing Design Catalogue sixplex typologies — pre-reviewed in GTA municipalities.

6 to 16-plex

Larger infill and urban mid-density projects on appropriate lots and zoning.

All configurations

Designed for Ontario Building Code compliance and rental-ready finishes from day one.

02 · FUNDING ALIGNMENT

CMHC Apartment Construction Loan Program.

Our multiplex delivery model is designed to be compatible with CMHC’s Apartment Construction Loan Program (ACLP), which has dedicated $500M to rental housing projects using prefabricated and modular construction. Fixed factory pricing makes cost submissions straightforward and reduces the risk of cost overruns that can derail CMHC-financed deals.

We work with developers at the feasibility stage so your CMHC application is built on real numbers — not open-ended estimates.

$500M

CMHC ACLP

dedicated to prefab & modular rental housing

03 · COMPARATIVE ADVANTAGE

Why prefab multiplexes beat traditional construction.

Factory production

No weather delays — production runs year-round in a climate-controlled environment.

Repeatable layouts

Reduced engineering and design costs per door on every unit after the first.

Parallel timeline

Site prep and factory production run concurrently — total project timeline compressed.

Fixed pricing

No pro forma surprises — your cost submission matches your delivered cost.

Faster occupancy

Reduced on-site trade time means faster rental income once units are complete.

Catalogue aligned

Fourplex and sixplex designs align with federal Housing Design Catalogue typologies.

04 · TALK TO US

Your infill site, our feasibility read.

Bring us your lot — or your acquisition target — and we’ll give you a clear picture of what typology is achievable, what it will cost, what CMHC financing looks like, and what your timeline will be.

No commitment required for an initial feasibility conversation. Just a straight answer on what’s possible.

◆ START A CONVERSATION ◆

Ready for a feasibility read?

Tell us the site, the scale, and the timeline. We’ll respond with a feasibility read, a delivery window, and a fixed quote.

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