Every fixed-price contract signed today is a bet on what materials and labour will cost when the work is done. Statistics Canada measures the movement quarterly.
Headline figure
+3.5%
The year-over-year rise in non-residential building construction costs across the 15-CMA composite in the second quarter of 2026. Statistics Canada reports that “construction costs for residential buildings in the 15-census metropolitan area (CMA) composite rose 2.3% in the second quarter, while non-residential building construction costs saw an increase of 3.5%” — Building construction price indexes, second quarter 2026, released 24 July 2026 (Table 18-10-0289-01).
What the data says
The building construction price indexes measure the change in contractors’ selling prices for new construction, sampled across 15 census metropolitan areas. They are a price series, not a volume series — a rising index means the same building costs more, not that more buildings are being built.
| Series | Q1 2026 | Q2 2026 | Year over year, Q2 2026 |
|---|---|---|---|
| Residential | +0.7% | +0.5% | +2.3% |
| Non-residential | +0.9% | +1.4% | +3.5% |
Source: Statistics Canada, Building construction price indexes, second quarter 2026, released 24 July 2026, Table 18-10-0289-01. Quarterly figures are the change on the preceding quarter as stated in the release.
The release is unusually explicit about causation, and it is worth quoting in full rather than paraphrasing: “The construction industry faced several challenges in the second quarter, as geopolitical tensions drove higher oil prices; retaliatory tariffs between Canada and the United States disrupted supply chains; regulatory uncertainty delayed purchases; and seasonal construction projects further intensified demand for an already constrained skilled trades workforce.”
Three of those four are input-price effects a contractor cannot control and largely cannot hedge. The fourth — the constrained skilled trades workforce — is a labour-market fact with its own data, covered in who actually works in Canadian construction and what Canadian construction actually pays.
Take a non-residential fixed-price contract of $4,000,000 signed at the start of the second quarter of 2026 and built out over that quarter at the composite rate. A 1.4% movement in the cost of the same work is $56,000. On the same contract, the residential rate of 0.5% would have been $20,000 — a $36,000 difference in exposure between two books of work, on one contract, in one quarter. Neither number is a forecast: both are simply the published index change applied to a stated contract value, and a real project’s exposure depends on its own mix of materials and trades.
That arithmetic is why escalation clauses, and the payment and holdback machinery behind them, matter more in a rising-cost quarter than a flat one. The legal mechanics are provincial: in Ontario the framework is the Construction Act, and Treadstone’s sister law firm sets out the holdback obligation at Construction Act holdback in Ontario.
Two consecutive quarters is a direction, not a trend. What the second quarter of 2026 shows is a widening gap: residential decelerated, from 0.7% to 0.5%, while non-residential accelerated, from 0.9% to 1.4%. A firm carrying both types of work is therefore facing two different cost environments in the same book. Set against the investment split, where non-residential investment rose while residential fell, the non-residential side is seeing both more money and faster price growth.
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