01Montreal · Structural steel and welding
Structural steel and welding cost in Montreal, QC
Fabricated structural steel, joists, deck, miscellaneous metals and field welding. Fabrication lead time is as much a project constraint as the price per tonne. In Montreal, the band moves with the curated local cost factor of 0.90× the national baseline.
02The local rate
Commercial hourly
$86 – $149
Montreal adjusted
General hourly
$77 – $131
House-scale work
Commercial $/sf
$16 – $26
8% of hard cost
General $/sf
$21 – $33
From the residential band
The per-square-foot figures come straight from the curated Montreal hard-cost bands, taken at 8% for a new build and 0% for a fit-out. Nothing on this page is a separate estimate — it is the same market data, sliced by trade.
Local context: Quebec's unionised construction regime sets predictable labour rates, and land servicing contributions are lower than Ontario development charges.
03General versus commercial
The two segments in Montreal
| Segment | Hourly | New build $/sf | Fit-out $/sf |
|---|---|---|---|
| General / residential | $77 – $131 | $21 – $33 | — |
| Commercial | $86 – $149 | $16 – $26 | — |
What the quoted rate covers
Normally: Shop drawings, fabrication and delivery; Erection, bolting and field welding; Deck supply and installation. Normally not: Connection design by the fabricator's engineer; Third-party weld and bolt inspection; Fireproofing and intumescent coating; Crane standby beyond the erection sequence.
What moves structural steel and welding pricing here
Tonnage and connection count: complexity costs more than weight. Fabrication lead time can dictate the entire construction schedule. Steel price is a global commodity and moves independently of local labour. Fireproofing requirements are a separate trade but are triggered by the steel design.
Buildlor facts
- Montreal runs at 0.90× the national construction cost baseline.
- Structural steel and welding is 8% of new-build hard cost.
- Structural steel and welding is 0% of fit-out hard cost.
04Questions
How much does structural steel and welding cost in Montreal?
Structural steel and welding in Montreal is billed in a band. The hourly and per-square-foot figures on this page are the national bands adjusted by the curated Montreal cost factor, which is the same factor the Montreal market page uses.
Is commercial structural steel and welding priced differently in Montreal?
This trade is almost entirely commercial and industrial: certified fabrication, engineered connections and third-party weld inspection. Residential steel is limited to beams and lintels.
Does Buildlor do the work?
No. Buildlor publishes cost data. Use these bands to sanity-check a quote before you tender, then price the full project in the Cost Stack Builder.
Buildlor Construction Cost Index · Last updated 2026-01-15 · Maintained by Buildlor Cost Desk
Scope: Structural steel and welding, Montreal, QC
Not advice — Buildlor is a data publisher. We do not bid, price, estimate, or build work, and nothing here is a quote, a tender price, or construction advice. Figures are indicative order-of-magnitude benchmarks for early budgeting and must be confirmed by a qualified cost consultant, quantity surveyor, or general contractor before you rely on them. About Buildlor