Budgeting a multiplex means more than a per-square-foot number — land, hard costs, soft costs and financing all move the return. Here's the cost framework, and how to get a real number for your lot.
Sample of lots for sale across Toronto.
Every multiplex budget breaks into four parts: land (purchase + closing), hard costs (demolition, excavation, structure, finishes, site work), soft costs (design, permits, development charges, consultants, HST, legal) and financing (construction interest, fees). Hard costs are the biggest line, but soft costs and development charges are where small-builder budgets most often get surprised.
Per-square-foot construction costs in Toronto vary widely with design, site conditions, finishes and the contractor market, and they shift year to year. A rule of thumb is fine for a first gut-check, but the return depends just as much on the rents your units achieve, the development charges on your lot, and your financing terms. That's why a real proforma beats a back-of-envelope number.
For five-plus-unit projects, MLI Select can raise leverage and stretch amortization, which lowers the equity you put in and the payment you carry — often turning a marginal proforma into a workable one. The financing structure can matter as much as the build cost.
Rather than guess, model it. Open the map, find your lot, and the proforma estimates the full cost stack, rents, and return for the as-of-right design — so you can compare lots on the numbers that actually matter.
It depends on the design, site conditions, finishes and current construction market, plus land, development charges and financing. Use the proforma on any lot for a lot-specific estimate rather than a generic figure.
Soft costs are the non-construction costs: design and engineering, permits and development charges, consultants, legal, HST and financing fees. They can be a large share of the total and are easy to underestimate.
Toronto applies development charges to new residential units, though some relief has applied to smaller as-of-right multiplex units. Always confirm the current charges for your project with the City, as policies change.
As-of-right unit potential shown here is a planning guide generated from Toronto's multiplex and Expanding Housing Options in Neighbourhoods (EHON) permissions, not legal advice. Always confirm what a specific lot allows with the City of Toronto or a qualified planner before purchasing or designing.
