Toronto address · Ward 5, York South-Weston
414 Blackthorn Ave
The City of Toronto has 1 building permit 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 · Addition(s)
Proposal to enclose front porch area and repair roof and railings damage.
Applied Jul 23, 2025 · issued Nov 17, 2025 · completed Feb 17, 2026 · Permit 25 198688 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.
160 m away · filed Jul 31, 2026 · Approved
405 Silverthorn Ave · Minor variance
To construct a new two-storey garden suite in the rear yard that will include an attached garage. The existing detached garage and shed will be demolished.
250 m away · filed Oct 17, 2025 · Approved
402 Blackthorn Ave · Minor variance
To enclose the existing rear porch.
90 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.
190 m away · filed Aug 2, 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.
210 m away · filed May 1, 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.
170 m away · filed Nov 30, 2022 · Approved
20 Kenora Cres · Minor variance
To construct a two-storey rear addition and a new front porch.
130 m away · filed Oct 5, 2022 · Approved
5 Kenora Cres · Minor variance
To maintain an existing ancillary structure (outside storage) in the rear yard.
190 m away · filed Mar 25, 2022 · Deferred
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.