Type a City of Toronto address and see what Zoning By-law 569-2013 says about it — the zone, what it permits, density, height, lot coverage, and any exception on the books. The answer behind “can I add a suite, build a garden house, or top up a storey?” starts here.
The highlighted area is the zone containing this point.
From the City of Toronto’s Zoning By-law 569-2013 open data (contains information licensed under the Open Government Licence – Toronto). Zoning is layered: exceptions, overlays, site-specific by-laws, and lands still under former municipal by-laws can change what actually applies, and provincial rules now permit multiplexes and suites in many residential zones regardless of the label. Treat this as a starting point — confirm with the City of Toronto or ask Nick to involve a planner before you rely on it.