The basement question: the city's second-unit registry knows about 12,000 apartments. The census implies triple that.

Brampton's registered second-unit count crossed 12,000 this year — the largest legal secondary-suite stock in the region and a number the city cites with justified pride. The census-derived estimate of how many households actually live in second units here implies a figure closer to three times that. The distance between those numbers is the most important unmeasured quantity in the city's housing system.

The registered basement apartment is one of the genuine policy successes of the past decade: inspected, fire-separated, legally tenanted, and renting well below anything the open market builds. The unregistered remainder is the same housing without the inspection — and its tenants sit outside every protection that registration triggers, from fire code to the tribunal.

The barrier to registering, landlords told the Bulletin, is rarely ideology and usually arithmetic: retrofit costs to meet code, plus the suspicion — mostly outdated, not entirely — that raising your hand invites reassessment. Cities that have closed the gap paired amnesty windows with retrofit grants; Brampton has run the first without much of the second.

A staff report on a renewed registration push is due this winter. The test the Bulletin will apply is simple: does it make the legal apartment cheaper to create than the illegal one is risky to keep? Until that inequality flips, the registry will keep counting the minority.