Open-concept main floors are the most-requested renovation in the GTA, and they almost always come down to one question: can we take out this wall? If it's load-bearing — which most central walls are — the answer is yes, but it's a structural project, not a demo job. Here's the real cost and process.
What it costs
A load-bearing wall removal in Toronto typically runs $6,000-$20,000+, depending on:
- Span — a longer opening needs a bigger beam. A 10-foot opening is straightforward; a 20-foot open-concept span needs serious steel. - Beam material — engineered LVL wood beams are cheaper; steel (W-beams) costs more but spans further and sits shallower. - Whether the beam is flush or dropped — hiding the beam flush in the ceiling (no visible bulkhead) costs more than leaving it dropped below the ceiling line. - Floors above — removing a wall on the main floor of a two-storey home carries more load than a bungalow and needs a larger beam plus temporary shoring. - What's in the wall — plumbing stacks, HVAC ducts, and electrical that have to be rerouted add cost.
A simple single-storey wall removal lands around $6,000-$10,000. A flush-beam, long-span, two-storey open-concept with rerouted services is $15,000-$25,000+.
Why you cannot skip the engineer or the permit
This is the non-negotiable part. Removing a load-bearing wall requires a building permit, and the permit requires stamped engineering drawings. A licensed structural engineer calculates the load, specifies the beam size and the support posts, and details how the load transfers down to the foundation.
Skipping this isn't a shortcut — it's dangerous and illegal. An undersized beam sags over time, cracks the ceiling and floors above, and in the worst case fails. And like all unpermitted structural work, it surfaces at resale and gets flagged by inspectors.
We engage the structural engineer, pull the permit, and build to the stamped drawings on every wall-removal project. It's the part that protects your home and your sale.
The process, step by step
1. Confirm it's load-bearing — a structural assessment, not a guess. Walls running perpendicular to floor joists usually carry load. 2. Engineer's drawings — load calculation, beam spec, post and footing details, stamped. 3. Permit — submitted with the engineered drawings to the city. 4. Temporary shoring — the load above is supported on temporary walls before the existing wall comes out. 5. Beam installation — the new beam goes in and the load transfers to it through properly-supported posts. 6. Post supports down to foundation — the new point loads need a path to the footing; sometimes this means a new footing in the basement. 7. Inspection — the structural work is inspected before anything gets closed up. 8. Finishing — drywall, flooring patch-in, and the bulkhead (if dropped) or flush ceiling.
How to spot a contractor who'll do it wrong
Walk away from anyone who:
- Says "we don't need an engineer for this" - Quotes the job without mentioning a permit - Won't show you the stamped drawings before starting - Doesn't account for where the new beam's load goes in the basement
These shortcuts are exactly how ceilings crack and floors sag a year later — and they make the work impossible to legalize at resale.
Worth it — done right
An open-concept main floor is one of the highest-impact renovations for both daily living and resale appeal. Done with proper engineering and a permit, it's safe, permanent, and adds real value. Done as a quick demo by someone cutting corners, it's a structural liability. We do open-concept conversions across Toronto, Mississauga, and the GTA — engineered, permitted, and inspected.