Street · 423 of 8,567 by permit count
Building permits on Blackthorn Ave
The City of Toronto has 379 building permits on record for Blackthorn Ave, going back to 1993. Those permits created 34 homes and removed 2, a net change of +32. Declared construction value totals $10.3M. The most recent permit was issued Sep 1, 2026 at 388 Blackthorn Ave.
- Permits on record
- 3791993–2026
- Declared construction value
- $10.3Mas filed, not adjusted
- Homes created
- 34dwelling units
- Homes removed
- 2net +32
Permits issued per year
20002026 (part year)
Most common work
Structures worked on
Where this street runs
Weston-Pelham Park 209 permits
Keelesdale-Eglinton West 170 permits
Most recent permits
| Issued | Work | What was filed | Value | Status |
|---|---|---|---|---|
| Sep 1, 2026 | Multiple Projects | Revision #1 - changes to structural elements onlyProposal for a 2 storey rear addition, new 2nd floor addition, interior alterations, rear deck. See also 24 157785 ZAP | — | Open |
| Aug 17, 2026 | Addition(s) | REV02: Proposed structural changes on 1st, 2nd & 3rd floor, skylight size change and pergola on third floor.Revisions to the 3rd floor Proposal for 3rd floor addition. | — | Open |
| Aug 6, 2026 | Party Wall Admin Permits | Admin party wall permit for proposed work at 356 Blackthorn Avenue. | $1K | Open |
| May 20, 2026 | Building Permit Related(PS) | Plumbing Revision 01 - Changes to interior renovation on main-floor.------------------------------------------------------Plumbing - Rear addition, interior work in basement | — | Open |
| May 5, 2026 | Multiple Projects | Revision 02 - Changes to interior renovation on main-floor.------------------------------------------------------REVISION 1: Add second storey to proposed rear addition.Proposal for a rear addition and interior work in the basement of the existing single family dwelling. | — | Open |
| Feb 19, 2026 | Multiple Projects | Drawings prepared for order to comply 25 262587 WNP 00 VI. | $5K | Open |
| Feb 10, 2026 | Building Permit Related (DR) | Drain - Proposal for underpinning and addition at rear and a new unit. | — | Open |
| Jan 29, 2026 | Multiple Projects | Proposal for three-storey rear addition, third storey front addition, rear deck and stairs, rear walkout, and lower level underpinning. Also proposed 2nd unit in the lower level. | $150K | Open |
| Jan 29, 2026 | Building Permit Related(PS) | Plumbing - Proposal for underpinning and addition at rear and a new unit. | — | Open |
| Jan 21, 2026 | Building Permit Related(PS) | Plumbing - Proposal to convert fully detached dwelling to 4 units, interior alterations in basement, first and second floor and underpinning. | — | Closed |
| Jan 6, 2026 | Interior Alterations | Proposal for remove load bearing walls, and install LVL beams. | $15K | Closed |
| Jan 5, 2026 | Multiple Projects | Revision 01: interior alterations and removal of fire rated ceiling. Proposal to convert fully detached dwelling to 4 units, interior alterations in basement, first and second floor and underpinning. | — | Closed |
| Nov 17, 2025 | Addition(s) | Proposal to enclose front porch area and repair roof and railings damage. | $18K | Closed |
| Aug 22, 2025 | Building Permit Related(PS) | Plumbing - Proposal for a 2 storey rear addition, new 2nd floor addition, interior alterations, rear deck and a 2nd suite in the basement. See also 24 157785 ZAP | — | Open |
| Aug 22, 2025 | Building Permit Related(MS) | HVAC - Proposal for a 2 storey rear addition, new 2nd floor addition, interior alterations, rear deck and a 2nd suite in the basement. See also 24 157785 ZAP | — | Open |
| Aug 1, 2025 | Interior Alterations | Proposal for interior alterations: add a shower shall in the first floor power room and revise layout of kitchen and rear entry to allow homeowner to stay on the first floor. | $100K | Closed |
| Aug 1, 2025 | Building Permit Related(PS) | Plumbing - Proposal for interior alterations: add a shower shall in the first floor power room and revise layout of kitchen and rear entry to allow homeowner to stay on the first floor. | — | Closed |
| Jun 16, 2025 | Multiple Projects | Proposal to enclose the existing rear concrete porch and make interior alterations. | $30K | Closed |
| Mar 28, 2025 | Building Permit Related(PS) | Plumbing - Proposal for 3rd floor addition. | — | Open |
| Mar 28, 2025 | Building Permit Related(MS) | HVAC - Proposal for 3rd floor addition. | — | Open |
| Dec 13, 2024 | Building Permit Related(MS) | HVAC Rev 01 - Proposed New Laneway / Rear Yard Suite (91.63sqm) | — | Open |
| Nov 29, 2024 | Building Permit Related(MS) | REVISION 1: Add second storey to proposed rear addition.HVAC - Proposal for a rear addition and interior work in the basement of the existing single family dwelling. | — | Open |
| Nov 7, 2024 | Building Permit Related(MS) | Rev 01 - New HVAC drawings are attached, with revised equipment spec's to suit the new condition.HVAC - Renovation and addition to existing two-storey residential single family dweling. | — | Open |
| Oct 21, 2024 | Multiple Projects | Rev 01 - Wall type #1 and #5 are being revised to accommodate onsite as built conditions. New HVAC drawings are attached, with revised equipment spec's to suit the new condition.Renovation and addition to existing two-storey residential single family dweling. | — | Open |
| Oct 10, 2024 | Back Water Valve (Sewer only) | Installation of a new backwater valve connecting to existing City sanitary system. | — | Closed |
| Jul 24, 2024 | Back Water Valve (Sewer only) | Back Water Valve | — | Closed |
| Apr 26, 2024 | Building Permit Related(PS) | Plumbing - Renovation and addition to existing two-storey residential single family dweling. | — | Open |
| Mar 20, 2024 | Addition(s) | proposal for second storey rear addition | $30K | Closed |
| Mar 20, 2024 | Building Permit Related(PS) | Plumbing - proposal for second storey rear addition | — | Closed |
| Mar 20, 2024 | Building Permit Related(MS) | HVAC - proposal for second storey rear addition | — | Closed |
| Mar 13, 2024 | Multiple Projects | Interior Alteration to accomodate 3rd unit at the 2nd floor (triplex). | $10K | Closed |
| Feb 23, 2024 | Other(SR) | Interior alterations to convert an existing dwelling into four units. | $80K | Closed |
| Feb 21, 2024 | New Laneway / Rear Yard Suite | Revision - foundation revised to helical pile system and structural framing revised to accommodate tree | — | Closed |
| Jan 24, 2024 | Interior Alterations | Proposed interior alterations (10 m2) to include relocation of stairs and new ceiling joists. | $20K | Closed |
| Jan 24, 2024 | Building Permit Related(PS) | Plumbing - Proposed interior alterations (10 m2) to include relocation of stairs and new ceiling joists. | — | Closed |
| Jul 4, 2023 | Building Permit Related(MS) | HVAC - INTERIOR ALTERATIONS + 33 M OF UNDERPINNING AT BSMT LEVEL ONLY | — | Open |
| Jun 1, 2023 | Building Permit Related(PS) | Plumbing - INTERIOR ALTERATIONS + 33 M OF UNDERPINNING AT BSMT LEVEL ONLY | — | Open |
| Jun 1, 2023 | Multiple Projects | INTERIOR ALTERATIONS + 33 M OF UNDERPINNING AT BSMT LEVEL ONLY | $15K | Open |
| Apr 5, 2023 | Building Permit Related(PS) | Plumbing - Proposed New Laneway / Rear Yard Suite (91.63sqm) | — | Closed |
| Mar 20, 2023 | Multiple Projects | INTERIOR ALTERATIONS + 33 M OF UNDERPINNING AT BSMT LEVEL ONLY | $15K | Closed |
The 40 most recent of 379 permits on record. Figures come from the City’s active and cleared permit datasets, refreshed daily — what that covers, and what it misses.