The sixplex next door won't send you a notice — here's how to spot it
Toronto's multiplexes are as-of-right, so they skip rezoning applications, community meetings, and mailed notices entirely. The building permit is the only public trail — here's how to watch it.
Toronto's low-rise streets are quietly densifying. Fourplexes have been legal as-of-right on residential lots citywide since 2023, and since Council's June 2025 vote, sixplexes are as-of-right across the Toronto & East York district and Ward 23 (Scarborough North) — with a study underway to expand them citywide.
"As-of-right" is the part most people miss. It means the project already complies with zoning, so there's no rezoning application, no community consultation meeting, and no notice in your mailbox. The first you hear of the sixplex next door might be the excavator.
Why it won't show up where you'd expect
When people want to know what's being built nearby, they usually look at development applications — the rezonings, site plan approvals, and condo plans that come with signs on the lawn and public meetings. That's the right place for mid-rises and towers, but multiplexes skip it entirely.
Take one address on Fern Avenue in Roncesvalles: within 800 metres there are 32 development applications on file, 7 of them still active — everything from an 11-storey mixed-use building to a new community recreation centre (see the nearby development map, data via PropertyMonitorTO). A fourplex conversion two doors down would appear on none of those lists.
The permit is the only paper trail
Because multiplexes don't need planning approval, the building permit is the first — and often only — public record that one is coming. That's where to look:
- New building / new house permits on a residential lot are the clearest signal, especially paired with a demolition permit at the same address.
- Interior alteration permits that add kitchens or units point to a conversion — a house becoming a triplex or fourplex without changing its shell.
- Status and dates tell you how real it is: an issued permit means work can start any time; a permit under review means it's still months out.
The City doesn't notify neighbours about building permits. The record is public, but nobody delivers it to you — you have to check, or set up an alert.
Multiplex construction is no longer rare: the City issued permits for over 600 multiplex units by August 2025, up roughly 50% from the year before, helped along by waived development charges on projects up to six units.
What this means for you
- Neighbours: if you want early warning about construction next door, watching permits beats watching for lawn signs. Multiplexes will never get one.
- Buyers: a street with fresh multiplex permits is a street in transition — more units, more tenants, and possibly more construction seasons ahead. Whether that's a plus or minus is up to you, but you should know before you offer.
- Small investors: permit activity on comparable lots shows you what the zoning actually allows in practice, not just on paper.
Check your street
Pull the permit history for any Toronto address — yours or the one you're eyeing — and scan the nearby development applications for the bigger projects that do go through planning. Then turn on monitoring to get an email the moment a new permit lands on your street, before the excavator does.