What Will a Structural Engineer Actually Cost Me in Ontario?
It’s the first question almost every homeowner and builder in Ontario asks, and it’s usually answered with a vague “it depends.” It does depend — on scope, on the municipality, and on whether you need a full permit package or just a letter. But it shouldn’t be a mystery.
Here are the real ranges we see across Brampton, Mississauga, Toronto, and the wider GTA in 2026, what drives the number up and down, and how to know you’re paying for the right scope — not more than you need, and not so little that the drawings come back from review.
“You're not paying for a stamped page. You're paying for a structural design that a municipality will actually approve, built on code, and coordinated with the rest of your drawing set.”
Typical Structural Engineer Fees in Ontario (2026)
Structural engineering in Ontario is quoted either as a flat project fee or an hourly rate. Residential work is almost always a flat fee; larger commercial projects are often billed hourly or on a percentage of construction. Here are the ballpark 2026 numbers.
| Project Type | Typical Fee Range (2026) | What’s Usually Included |
|---|---|---|
| Single P.Eng. letter / site visit | $350 – $800 | One inspection + stamped conformance or deficiency letter |
| Wall removal / opening (Part 9) | $800 – $1,800 | Structural design, calc, one stamped drawing page |
| Residential addition / renovation | $2,500 – $6,500 | Structural design + complete permit drawing package |
| Basement / second-unit conversion | $2,500 – $5,500 | Structural review + permit package incl. SB-12 energy |
| New custom home (structural) | $6,000 – $15,000 | Full structural design + stamped drawings |
| Retail / office fit-out (Part 3) | $5,000 – $20,000+ | Structural, permit coordination, sometimes shop drawings |
Ranges are for a structural engineer in the Greater Toronto Area in 2026. Complex, foundation-heavy, or Part 3 projects land at the higher end. Exact quotes depend on scope — a firm flat-fee quote is always the way to go.
What Actually Drives the Price Up or Down
Two projects can look similar and quote wildly differently. The variables that move the number the most:
Stamped vs. review-only
A full P.Eng.-sealed design with calculations costs more than a quick review of an existing set. Know which one you need before you ask.
Whether it's a full permit package
If the engineer also produces the architectural drawings, elevations, and SB-12 energy compliance, the scope — and the fee — is much larger than a single stamped page.
Municipality review complexity
Toronto's Part 3 commercial process, Oakville's LBBA tree requirements, and Vaughan's secondary-suite rules all add coordination. Local know-how saves you re-submission cycles.
Site access & number of visits
Renovations on occupied homes often need multiple coordinated site inspections. Bundled site visits are cheaper than paying per visit.
The Cheapest Quote Is Usually the Most Expensive One
A permit drawing set that misses the elevations, the energy compliance, or the structural package comes back from review with a deficiency. The resubmission cycle eats 4 to 8 weeks of schedule and often a second set of fees. A “cheap” set that doesn’t clear review costs more in delays than the premium set that sails through.
Compare like-for-like: the fee should cover a complete, coordinated, code-compliant package — not just “a stamped page.” That’s the difference between paying for engineering and paying for trouble.
“The right question isn't "how cheap can I get drawings?" It's "what will my total project cost if I pick the engineer who gets it approved the first time?"”
How to Get an Accurate Structural Engineer Quote in the GTA
To get a firm, flat-fee quote rather than a vague range, give the engineer these five things up front:
Your municipality — because review rules differ across Brampton, Mississauga, Toronto, Vaughan, Markham, and the rest of the GTA.
Whether it's a new build, an addition, a renovation, or a basement/second-unit conversion.
Any existing drawings or surveys — even rough sketches help scope the structural work.
Whether you need just structural, or the full permit package (drawings + energy compliance + submission).
Whether any structural work is involved (wall removal, openings, foundation) — this is what triggers the P.Eng. requirement.
Structural Engineer Pricing, City by City Across the GTA
Fees don’t change dramatically from one GTA municipality to another — but the review process and what’s required does. Here’s the local page for your city so you know exactly what a structural engineering project involves where you live:
May Engineering Inc: Firm Prices, Complete the First Time
May Engineering Inc is a Brampton-based structural engineering and project delivery firm serving the entire GTA. We quote firm, flat-fee prices up front — for stamped structural drawings, permit packages, engineering letters, and project management — and we build every package to pass municipal review the first time.
Tell us your scope and we’ll tell you exactly what it should cost before you commit. Get a structural engineering quote for your project today.
Know exactly what your project should cost.
May Engineering Inc provides firm, flat-fee structural engineering quotes for projects across the GTA — no hourly surprises.
Get a Structural Quote