How can I tell if a wall in my Kanata split-level is load-bearing?

Figuring out whether a wall carries load comes down to reading how the house is framed, and a carpenter or designer does that by looking at the actual structure, not just the surface. That said, there are a few things you can look at yourself before anyone opens anything up.

Start with direction. Floor joists run in one direction, and a wall that runs perpendicular to them is more likely to be carrying their weight down to the foundation. A wall that runs parallel to the joists is more likely to be a partition. You can sometimes see joist direction in an unfinished basement or attic.

Then look at what is above and below. A wall sitting directly over a beam, a foundation wall or another wall on the floor below is a strong sign it is in the load path. A wall with nothing obvious beneath it is worth examining more carefully. In a split-level, the floor levels step up and down, so the load path can change direction in ways that are not obvious from inside a finished room.

Check the attic if you can get there safely. If roof rafters or engineered trusses bear on top of a wall, or if a ridge beam lands on it, that wall is doing structural work.

None of this is a verdict. A wall can look like a partition and still carry load, or look structural and turn out not to be. The only way to know for certain is to have a carpenter or a qualified designer look at the framing, which may mean opening a small section of ceiling or wall to see what is actually sitting on top.

Because split-levels stack floors at different heights, the load path in your house may not follow the same logic as a two-storey box. Ask whoever you hire to trace the load from the roof all the way down to the foundation before any decisions are made about that wall.

Before touching anything, confirm with the City of Ottawa whether a permit is needed for the wall you have in mind.