Opening up a closed floor plan is one of the most popular — and most misunderstood — renovations in the GTA. Here’s what it actually involves.
Step 1: Determine if the wall is load-bearing
This is non-negotiable. A load-bearing wall carries the weight of floors and roof structure above. Removing it without proper support causes structural failure. Signs a wall may be load-bearing: runs perpendicular to floor joists, located near the centre of the home, has walls directly above or below it in the same location.
Determination method: A structural engineer reviews your home plans and inspects the site. Cost: $1,500–$4,000 for structural assessment and stamped drawings. Required for permit.
Step 2: Engineering and permit
Structural engineer specifies the beam required to replace the wall’s load-bearing function. A permit is required for any structural wall removal in Ontario. Toronto permit processing: 15–25 business days.
Step 3: Temporary shoring
Before any wall removal begins, temporary supports (shoring) carry the load while the permanent beam is installed. This is critical and not a DIY step.
Step 4: Beam installation
The engineered beam (typically LVL — laminated veneer lumber — or steel) is installed in the header position. Temporary posts support it until permanent columns or posts are in place.
Step 5: Rough-in adjustments
Electrical, plumbing, or HVAC that ran through the removed wall must be rerouted. This adds cost (often $2,000–$8,000) and requires inspection.
Total cost for wall removal + beam: $8,000–$25,000+ depending on span, beam type, and what’s in the wall.
Has anyone done an open-concept conversion in Toronto recently? Share your experience — wall type, beam spec, permit timeline, and contractor.
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