Toronto address · Ward 9, Davenport
117 Blackthorn Ave
The City of Toronto has 8 building permits since 2017 and 1 Committee of Adjustment file 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
Heating and ventilation
Revision 01: redesign of the HVAC system
Applied Aug 12, 2021 · issued Aug 19, 2021 · completed Nov 30, 2021 · Permit 19 188194 HVA (revision 01)
- Closed
Small residential project · Multiple projects
Revision 01: changes to the interior layouts
Applied Aug 12, 2021 · issued Oct 13, 2021 · completed Nov 30, 2021 · Permit 19 188194 BLD (revision 01)
- Closed
Heating and ventilation
HVAC - Proposal to construct a new 2 storey rear addition with a new rear basement walkout and a new detached rear yard garage. Work also includes reconstruction of the existing front porch and interior alterations.
Applied Aug 31, 2020 · issued Sep 16, 2020 · completed Nov 30, 2021 · Permit 19 188194 HVA
- Closed
Plumbing
Plumbing - Proposed underpinning in existing basement level
Applied Dec 10, 2019 · issued Dec 18, 2019 · completed Nov 30, 2021 · Permit 19 259683 PLB
- Closed
Drains and site services
Drain - Proposed underpinning in existing basement level
Applied Dec 10, 2019 · issued Dec 18, 2019 · completed Nov 30, 2021 · Permit 19 259683 DRN
- Closed
Small residential project · Underpinning
Proposed underpinning in existing basement level
Applied Dec 10, 2019 · issued Dec 18, 2019 · completed Nov 30, 2021 · Permit 19 259683 BLD
- Closed
Plumbing
Plumbing - Proposal to construct a new 2 storey rear addition with a new rear basement walkout and a new detached rear yard garage. Work also includes reconstruction of the existing front porch and interior alterations.
Applied Jul 12, 2019 · issued Aug 15, 2019 · completed Nov 30, 2021 · Permit 19 188194 PLB
- Closed
Small residential project · Multiple projects
Proposal to construct a new 2 storey rear addition with a new rear basement walkout and a new detached rear yard garage. Work also includes reconstruction of the existing front porch and interior alterations.
Applied Jul 12, 2019 · issued Aug 15, 2019 · completed Nov 30, 2021 · Permit 19 188194 BLD
Committee of Adjustment
This address's applications to the City's Committee of Adjustment since 2017, and any still open. A minor variance asks for a small exception to the zoning by-law, such as a little more height or a smaller setback; a consent divides a lot or grants an easement.
- Closed
Minor variance · NR addition
To alter a rowhouse by constructing a two-storey rear addition and by reconstructing the existing detached garage.
Decision: Approved (hearing May 15, 2019)
Filed Jan 17, 2019 · File A0032/19EYK (TEY)
What’s planned nearby
Development sites within 500 m
- Under review
20-36 Caledonia Road and 1500-1536 St Clair Avenue West
17 storeys · Mixed use
350 m away · Condominium · Under review · filed Oct 25, 2021
- Under review
18 storeys · 211 homes · Mixed use
400 m away · Rezoning · Under review · filed Jun 20, 2025
- Under review
21 storeys · 330 homes · Mixed use
400 m away · Rezoning · Under review · filed Dec 18, 2025
- Under review
17 storeys · 258 homes · Mixed use
400 m away · Site plan · Under review · filed Jun 24, 2022
Neighbours’ Committee of Adjustment files within 250 m
7 Howick Ave · Minor variance
To legalize and to maintain the rear second storey addition (including a staircase leading to this addition), to the existing two-storey semi-detached dwelling, that was constructed without an authorized building permit.
110 m away · filed Apr 24, 2026 · Approved
20 Howick Ave · Minor variance
To construct a new three-storey detached dwelling with a covered front porch with stairs, a side (east) second storey patio, a rear ground floor deck, and a rear third storey deck. Also, to construct a rear one-storey detached ancillary building (shed). The existing front yard parking pad and driveway will be removed.
70 m away · filed Apr 9, 2026 · Approved
17 Gilbert Ave · Minor variance
To legalize and to maintain the existing rear one-storey addition (attached shed), which was constructed without an authorized building permit. Also, to convert the existing basement level into a residential dwelling unit. There will be a total of two residential dwelling units on this lot (one unit occupying the ground and second levels, and one unit occupying the basement level).
190 m away · filed Mar 2, 2026 · Approved
113 Silverthorn Ave · Minor variance
To alter the existing one-storey ancillary building (detached one-car garage) by constructing a rooftop deck (above the existing garage), and rooftop access stairs at the west side of the building.
150 m away · filed Jul 15, 2025 · Refused
66 Silverthorn Ave · Minor variance
To alter the existing two-storey semi-detached dwelling by replacing the front yard parking space with an exterior staircase (which will lead to all levels and the rooftop).
230 m away · filed Jun 24, 2025 · Approved
37 Blackthorn Ave · Minor variance
To alter the existing two-storey detached dwelling by constructing a partial rear third storey addition, and a front third storey rooftop deck (above the second storey portion of the dwelling).
200 m away · filed Jun 13, 2025 · Approved
25 Gilbert Ave · Minor variance
To alter the existing one-storey ancillary building (detached garage abutting the laneway) by constructing a complete second storey addition (that will be cantilevered) for one laneway suite. There will be a total of two residential dwelling units on this lot (one unit occupying the main dwelling and one unit occupying the second level of the ancillary building).
190 m away · filed May 29, 2025 · Approved
37 Blackthorn Ave · Minor variance
To alter the existing two-storey detached dwelling by constructing a third storey addition with a deck (above a portion of the second storey of this dwelling).
200 m away · filed Aug 22, 2024 · 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.