Homeowner's Guide · North Vancouver
Do You Need a Structural Engineer or a Contractor?
You've spotted a structural problem — a crack, a sagging floor, a wall you want to remove — and now you're not sure who to call. Engineer? Contractor? Both? Here's the plain-English version of who does what, and the simplest way to get your project moving.
It's one of the most common questions we hear, and the confusion is understandable — the roles overlap in people's minds but are actually quite distinct. The short answer: an engineer designs the fix, a contractor builds it, and most structural projects need both at some point.
What a structural engineer does
A structural engineer is the diagnostician and designer. They analyze how your building carries its loads, determine why something is failing, and design the solution — the beam sizes, the connections, the reinforcement — then issue stamped drawings that the building department will accept. What they don't do is the physical work. You hire an engineer for their analysis and their signature, not their tool belt.
What a structural contractor does
A structural contractor is who actually does the work — and, just as importantly, who can tell you in plain terms what you're looking at and what it will take. An experienced structural contractor assesses the problem on-site, handles the permits and the construction, and knows exactly when a job needs an engineer's stamp and when it doesn't. A good one also reads a house well enough to catch things a drawing alone might miss.
When you need each
- A cosmetic crack you're unsure about? Start with a contractor's assessment — often no engineer needed.
- Removing a load-bearing wall, replacing a beam, underpinning, a seismic retrofit, or major foundation work? These need engineered, stamped drawings — an engineer and a contractor.
- Not sure which it is? That's exactly what an on-site assessment is for — it tells you whether engineering is even required.
The simplest path: one accountable party
You don't have to project-manage an engineer and a contractor separately. A structural contractor who does this work every week has engineers they trust and coordinates the whole process — assessment, engineering, permits, and construction — so you deal with one accountable party from diagnosis to warranty-backed handover. That's how we run every structural repair at Twin Peaks: we assess first, bring in a structural engineer when the job calls for stamped drawings, and build to that specification.
Where to start
With an honest assessment. Before you hire anyone, get eyes on the actual problem — it tells you whether it's cosmetic or structural, whether engineering is required, and what the real scope is. If you're still trying to gauge how serious the issue is, our guides to the 7 signs of a structural problem and whether your foundation crack is serious are a good place to begin.
Not sure who to call? Start with an assessment.
Book a free structural assessment and we'll tell you honestly what you're dealing with — including whether you need an engineer — and coordinate the whole thing if you do.