Toronto address · Ward 5, York South-Weston
443 Blackthorn Ave
The City of Toronto has 4 building permits since 2017 on record for this address.
Building permits
Every permit the City lists for this address since 2017, and any still open from before, newest first.
- Closed
Small residential project · Accessory Building(s)
Proposal to legalize the gazebo located at rear of the existing house.
Applied Feb 24, 2022 · issued May 5, 2022 · completed Jul 4, 2022 · Permit 22 117126 BLD
- Closed
Heating and ventilation
HVAC - Second storey addition
Applied Apr 17, 2021 · issued Aug 23, 2021 · completed Jul 4, 2022 · Permit 21 142115 HVA
- Closed
Plumbing
Plumbing - Second storey addition
Applied Apr 17, 2021 · issued Aug 23, 2021 · completed Jul 4, 2022 · Permit 21 142115 PLB
- Closed
Small residential project · Addition(s)
Second storey addition
Applied Apr 17, 2021 · issued Aug 23, 2021 · completed Jul 4, 2022 · Permit 21 142115 BLD
Committee of Adjustment
No applications to the City's Committee of Adjustment for this address since 2017. That's where an owner asks for a minor variance (a small exception to the zoning by-law) or a consent to divide a lot.
What’s planned nearby
Development sites within 500 m
No rezoning, site plan, subdivision or condominium file open within 500 m, and no pre-construction project on the site.
Neighbours’ Committee of Adjustment files within 250 m
14 Haverson Blvd · Minor variance
To construct a second storey addition above the existing dwelling.
170 m away · filed Jul 31, 2026 · Approved
402 Blackthorn Ave · Minor variance
To enclose the existing rear porch.
190 m away · filed Mar 18, 2025 · Approved
342 Gilbert Ave · Minor variance
To alter the existing two-storey ancillary building (detached garage), abutting Bronco Avenue, by converting the second floor into a new second storey garden suite, constructing a front (east) walkout, and reconstructing the exterior south side staircase. The garage area would remain on the ground level of the ancillary building. The existing one-storey detached main dwelling on the property would remain unaltered.
220 m away · filed Aug 2, 2023 · Approved
68 Haverson Blvd · Minor variance
To legalize and to maintain the new dwelling with a detached garage in the rear yard that is currently under construction. A previous Committee of Adjustment application (A0483/20EYK) approved a second storey addition above the existing dwelling, a two-storey rear addition and a rear detached garage with variances related to floor space index, length, depth, lot coverage of an ancillary structure and side yard setback of an ancillary structure.
220 m away · filed Jun 9, 2023 · Approved
323 Gilbert Ave · Minor variance
To construct a new three-storey four-unit detached dwelling (fourplex) with a front covered porch, front and rear basement level patios, and a rear three-storey staircase structure that will lead to rear balconies (on each level). Also, to construct an ancillary building (storage shed) in the rear yard.
200 m away · filed May 1, 2023 · Approved
70 Haverson Blvd · Minor variance
To construct a new dwelling.
250 m away · filed Jan 27, 2023 · Approved
358 Gilbert Ave · Minor variance
To alter the existing one-storey detached dwelling by constructing a complete second storey addition with front and rear balconies, and a ground level deck.
160 m away · filed Nov 30, 2022 · Approved
20 Kenora Cres · Minor variance
To construct a two-storey rear addition and a new front porch.
230 m away · filed Oct 5, 2022 · Approved
From the City of Toronto’s open data: building permits (active, and cleared since 2017), Committee of Adjustment applications and address points, this record updated Sep 29, 2026, and the development sites from its Development Applications data. Contains information licensed under the Open Government Licence – Toronto. Construction cost estimates and contractors’ names are left out on purpose, and nothing here names an owner.