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357 Silverthorn Ave, Toronto

Zoning RM

Residential Multiple Dwelling with a site-specific exception.

Height limit: 11 m, 3 storeys

An exception can change what’s allowed here; read it in the by-law before relying on this. Zoning By-law 569-2013

Homes allowed

  • ✅ Up to 4 homes in a house-form building
  • ✅ Plus a garden suite, or a laneway suite if the lot is on a public lane
  • — Sixplexes aren’t allowed as of right in ward 5 yet (only in 9 wards); a variance would be needed

Ward 5, York South-Weston. Development charges are waived for multiplexes of up to 6 homes in Toronto.

Limits None mapped

  • Heritage: not on the register
  • Flood and conservation: none mapped

Applications at this address

Rulings within 400 m

  • Approved · 4 units incl. a suite · Multiplex · Jun 25, 2026
  • 81 Aileen Ave · 222 m
    Approved · 4 units · Multiplex · May 28, 2026
  • 449 Rogers Rd · 190 m
    Approved · 4 units · New building · May 27, 2026
  • 451 Rogers Rd · 193 m
    Approved · 4 units · New building · May 27, 2026
  • Approved · 3 units · Apartment building · Jul 9, 2025
  • Approved · 3 units · Apartment building · Jul 9, 2025
  • Approved · 6 units · Apartment building · May 25, 2021

All rulings

Building permits here

  • New Building · 2024 · Issuance Pending
    Proposal to construct a 3 storey 3 unit Triplex.
  • Demolition · 2022 · Closed
    PROPOSED DEMOLITION OF THE EXISTING HOUSE

For sale here now

Run the numbers for this lot See it on the planning map

A reading of the City’s public zoning maps, not a zoning opinion or legal advice. Site-specific exceptions, lot size, trees, heritage and servicing decide what a lot can really take: confirm with a zoning review or a planner before you buy. Sources: City of Toronto open data (zoning, wards, heritage register, building permits, Committee of Adjustment), conservation authorities’ open data.

Talk to us about a property

Buying an income property, adding units or building a multiplex? Tell Mehran Salehian about the property and what you have in mind. You’ll get a reply with next steps, and a full feasibility review if the project is worth one.