Toronto address · Ward 5, York South-Weston
459 Blackthorn Ave
The City of Toronto has 6 building permits since 2017 (4 still open) 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
Drains and site services · Back water valve (Sewer only)
Back Water Valve (Sewer only)
Applied Aug 26, 2019 · issued Aug 26, 2019 · completed Sep 3, 2019 · Permit 19 211784 DRN
- Inspections under way
Plumbing
Plumbing - Proposal to cosntruct a rear 2 storey addition, interior alterations, new rear deck and front entrance
Applied May 31, 2019 · issued May 31, 2019 · Permit 18 231912 PLB
- Inspections under way
Drains and site services
Drain - Proposal to cosntruct a rear 2 storey addition, interior alterations, new rear deck and front entrance
Applied May 31, 2019 · issued May 31, 2019 · Permit 18 231912 DRN
- Inspections under way
Heating and ventilation
HVAC - Proposal to cosntruct a rear 2 storey addition, interior alterations, new rear deck and front entrance
Applied Apr 26, 2019 · issued May 7, 2019 · Permit 18 231912 HVA
- Inspections under way
Small residential project · Multiple projects
Proposal to cosntruct a rear 2 storey addition, interior alterations, new rear deck and front entrance
Applied Sep 26, 2018 · issued Oct 29, 2018 · Permit 18 231912 BLD
- Closed
Small residential project · Deck
Proposal to demolish existing front porch and rear deck of an existing sfd-detached.
Applied Mar 23, 2018 · issued Apr 19, 2018 · completed Nov 20, 2018 · Permit 18 133566 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
- Under review
2343-2363 Eglinton Avenue West
43 storeys · 638 homes · Mixed use
490 m away · Rezoning · Under review · filed May 7, 2025
Neighbours’ Committee of Adjustment files within 250 m
14 Haverson Blvd · Minor variance
To construct a second storey addition above the existing dwelling.
200 m away · filed Jul 31, 2026 · 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.
170 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.
250 m away · filed May 1, 2023 · Approved
70 Haverson Blvd · Minor variance
To construct a new dwelling.
190 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.
210 m away · filed Nov 30, 2022 · Approved
68 Haverson Blvd · Minor variance
To legalize and to maintain the new dwelling with a detached rear garage 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.
170 m away · filed Apr 27, 2022 · Refused
76 Haverson Blvd · Minor variance
To construct a new detached dwelling with an attached garage.
200 m away · filed Feb 7, 2022 · Approved
18 Harlton Cres · Minor variance
To construct a two-storey front addition, a third floor addition and to create a secondary suite.
250 m away · filed Jan 11, 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.