Toronto address · Ward 5, York South-Weston
12 Dennis Ave
The City of Toronto has 11 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
Heating and ventilation
HVAC - Proposal for interior alterations to existing 2 unit dwelling.
Applied Oct 15, 2020 · issued Nov 4, 2020 · completed Feb 25, 2021 · Permit 20 166976 HVA
- Closed
Small residential project · Multiple projects
Revision 01: new third floor balconyProposal for interior alterations to existing 2 unit dwelling.
Applied Sep 25, 2020 · issued Dec 11, 2020 · completed Feb 25, 2021 · Permit 20 166976 BLD (revision 01)
- Closed
Plumbing
Plumbing - Proposal for new unit addition in the attic and interior alterations
Applied Jul 13, 2020 · issued Jul 30, 2020 · completed Feb 25, 2021 · Permit 20 166976 PLB
- Closed
Small residential project · Multiple projects
Proposal for interior alterations to existing 2 unit dwelling.
Applied Jul 13, 2020 · issued Jul 30, 2020 · completed Feb 25, 2021 · Permit 20 166976 BLD
- Closed
New house · New building
Revision #02 - Proposal to swap kitchen and bedroom locations on the ground floorRevision #01 - To proposed the as build conditions for the west wall of the existing single family dwellingTo construct a new duplex dwelling with a rear one storey detached garage.2 storey house with finished basement.
Applied Mar 21, 2019 · issued Apr 3, 2019 · completed May 21, 2020 · Permit 15 166529 BLD (revision 02)
- Closed
New house · New building
Revision #01 - To proposed the as build conditions for the west wall of the existing single family dwellingTo construct a new duplex dwelling with a rear one storey detached garage.2 storey house with finished basement.
Applied Aug 2, 2018 · issued Oct 15, 2018 · completed May 21, 2020 · Permit 15 166529 BLD (revision 01)
- Closed
Heating and ventilation
HVAC - Permit to demolish existing 2-1/2 storey single family detached house & build new 2-storey single family detached house with front yard porch, balcony, rear yard deck & balcony.
Applied Jun 4, 2015 · issued Jan 29, 2018 · completed Jan 31, 2019 · Permit 15 166529 HVA
- Closed
New house · New building
To construct a new duplex dwelling with a rear one storey detached garage.2 storey house with finished basement.
Applied Jun 1, 2015 · issued May 5, 2016 · completed May 21, 2020 · 2 homes added · Permit 15 166529 BLD
- Closed
Plumbing
Plumbing - Permit to demolish existing 2-1/2 storey single family detached house & build new 2-storey single family detached house with front yard porch, balcony, rear yard deck & balcony.
Applied Jun 1, 2015 · issued May 5, 2016 · completed Jan 31, 2019 · Permit 15 166529 PLB
- Closed
Demolition
Permit to demolish existing single family detached house & construct new 2-storey single family detached house.
Applied Jun 1, 2015 · issued Apr 25, 2016 · completed Nov 1, 2017 · 1 home removed · Permit 15 166547 DEM
- Closed
Drains and site services
Drain - Permit to demolish existing 2-1/2 storey single family detached house & build new 2-storey single family detached house with front yard porch, balcony, rear yard deck & balcony.
Applied Jun 1, 2015 · issued May 5, 2016 · completed Jan 31, 2019 · Permit 15 166529 DRN
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
43 storeys · Residential
130 m away · Rezoning · Under review · filed Sep 8, 2025
- Under review
49 storeys · 2,356 homes · Mixed use
320 m away · Subdivision · Under review · filed Jul 19, 2021
- Approved
- Under review
24 storeys · Not stated in the file
350 m away · Site plan · Under review · filed Oct 21, 2021
- Under review
34 storeys · 365 homes · Residential
370 m away · Site plan · Under review · filed Nov 1, 2021
- Under appeal
1161-1181 Weston Road and 7-17 Locust Street
38 storeys · 382 homes · Mixed use
420 m away · Site plan · Under appeal · filed Jan 22, 2024
Neighbours’ Committee of Adjustment files within 250 m
59 Brownville Ave · Minor variance
To construct a rear two-storey addition, a front basement walkout, stairs along the east side of the dwelling, and a new front porch. The existing dwelling will be converted into a triplex.
240 m away · filed Oct 17, 2025 · Approved
1091-1093 Weston Rd · Minor variance
To construct a third and fourth storey addition above the existing mixed use building. A total of 8 residential dwelling units will be provided.
150 m away · filed Jan 20, 2025 · Approved
72 Lambton Ave · Minor variance
To construct a second storey addition above the existing dwelling, a one storey front addition, a two storey rear addition, and a deck in the rear yard.
220 m away · filed May 15, 2024 · Approved
20 Lambton Ave · Minor variance
To construct a third storey addition above the existing dwelling and a three-storey rear addition.
130 m away · filed Jan 2, 2024 · Approved
30 Lambton Ave · Minor variance
To permit two secondary suites.
120 m away · filed Jan 30, 2023 · Approved
24 York Ave · Minor variance
To construct a second storey addition above the existing dwelling and a two-storey rear addition.
190 m away · filed Oct 27, 2022 · Approved
82 Brownville Ave · Minor variance
To construct a rear two-storey addition and a new rear deck.
150 m away · filed Aug 25, 2021 · Approved
26 Syndicate Ave · Minor variance
To construct a third storey addition above the existing dwelling, new three storey rear and front additions, a new rear deck and new front porch.
220 m away · filed Jul 21, 2021 · 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.