Toronto address · Ward 4, Parkdale-High Park
300 Dufferin St
The City of Toronto has 20 building permits since 2017 (12 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.
- Permit issued
Partial permit · Partial permit - structural framing
Part Permit - Proposal to retrofit existing TCH apartment building for improved comfort and energy efficiency (alterations to wall types, openings, interior layout, finishes and site features).
Applied Aug 10, 2026 · issued Sep 16, 2026 · Permit 26 179615 STR
- Closed
Partial permit · Partial permit - foundation
Part Permit - Foundation and waterproofing part permitProposal to retrofit existing TCH apartment building for improved comfort and energy efficiency (alterations to wall types, openings, interior layout, finishes and site features).
Applied Jul 14, 2026 · issued Aug 24, 2026 · completed Sep 16, 2026 · Permit 26 179615 FND
- Cancelled
Partial permit · Partial permit - shoring
Part Permit - Shoring/excavation Proposal to retrofit existing TCH apartment building for improved comfort and energy efficiency (alterations to wall types, openings, interior layout, finishes and site features).
Applied Jul 14, 2026 · completed Aug 24, 2026 · Permit 26 179615 SHO
- Permit issued
Plumbing
Plumbing - Construction of new foundation and interior alterations
Applied Jun 18, 2026 · issued Sep 16, 2026 · Permit 26 179615 PLB
- Permit issued
Heating and ventilation
HVAC - Construction of new foundation and interior alterations
Applied Jun 18, 2026 · issued Sep 16, 2026 · Permit 26 179615 HVA
- Permit issued
Drains and site services
Drain - Construction of new foundation and interior alterations
Applied Jun 18, 2026 · issued Sep 14, 2026 · Permit 26 179615 DRN
- Permit issued
Drains and site services · Site service
Site Services - Construction of new foundation and interior alterations
Applied Jun 18, 2026 · issued Sep 14, 2026 · Permit 26 179615 STS
- Under review
Addition or alteration · Multiple projects
Proposal to retrofit existing TCH apartment building for improved comfort and energy efficiency (alterations to wall types, openings, interior layout, finishes and site features).
Applied Jun 8, 2026 · Permit 26 179615 BLD
- Permit issued
Addition or alteration · Interior demolition
Bring building back to base. Demolish select building elements prior tobeginning renovation work.
Applied May 19, 2026 · issued May 28, 2026 · Permit 26 162589 BLD
- Permit issued
Heating and ventilation
HVAC - Bring building back to base. Demolish select building elements prior tobeginning renovation work.
Applied May 19, 2026 · issued May 28, 2026 · Permit 26 162589 HVA
- Permit issued
Plumbing
Plumbing - Bring building back to base. Demolish select building elements prior tobeginning renovation work.
Applied May 19, 2026 · issued Jul 17, 2026 · Permit 26 162589 PLB
- Cancelled
Addition or alteration · Other
rev 01: Waterproof existing structure. Construct new foundation and footing. Excavate for for work above. Removal of select building elements to enable a deep energy retrofit. Removals are mainly limited to removal of exterior shell on uppermost three storeys. Included for removal and eventual future replacement with new: exterior envelope, roofing, exterior windows and doors, exterior balconies and guards.
Applied Apr 22, 2026 · completed Aug 11, 2026 · Permit 25 167198 BLD (revision 01)
Show 8 more permits
- Under review
Fire and security upgrade · Other
Proposal for replacement of existing electric fire pump
Applied Nov 19, 2025 · Permit 25 255940 FSU
- Inspections under way
Addition or alteration · Other
Removal of select building elements to enable a deep energy retrofit. Removals are mainly limited to removal of exterior shell on uppermost three storeys. Included for removal and eventual future replacement with new: exterior envelope, roofing, exterior windows and doors, exterior balconies and guards.
Applied May 29, 2025 · issued Dec 19, 2025 · Permit 25 167198 BLD
- Closed
Fire and security upgrade · Sprinklers
Replacing all existing garage sprinkler piping and dry valves with new.
Applied Sep 8, 2023 · issued Sep 18, 2023 · completed Jun 24, 2024 · Permit 23 200003 FSU
- Closed
Heating and ventilation · Alter: Boiler/Furnace/AC replacement
Proposed alteration to HVAC and instalation of new make up air unit in exsiting apratment building.
Applied May 26, 2017 · issued May 30, 2017 · completed Mar 27, 2018 · Permit 17 167029 MSA
- Closed
Heating and ventilation
HVAC - Renovation of Laundry room to make it compliant to AODA and TCHC accessibility standards. New Electrical panel, new lighting, new exhaust for dryers, new Plumbing, new Mechanical system, new floor and wall finishes.
Applied Jul 20, 2016 · issued Aug 17, 2016 · completed May 6, 2026 · Permit 16 193813 HVA
- Closed
Plumbing
Plumbing - Renovation of Laundry room to make it compliant to AODA and TCHC accessibility standards. New Electrical panel, new lighting, new exhaust for dryers, new Plumbing, new Mechanical system, new floor and wall finishes.
Applied Jul 20, 2016 · issued Aug 4, 2016 · completed Aug 13, 2026 · Permit 16 193813 PLB
- Closed
Addition or alteration · Interior alterations
Renovation of Laundry room to make it compliant to AODA and TCHC accessibility standards. New Electrical panel, new lighting, new exhaust for dryers, new Plumbing, new Mechanical system, new floor and wall finishes.
Applied Jul 20, 2016 · issued Jul 25, 2016 · completed Dec 11, 2017 · Permit 16 193813 BLD
- Inspections under way
Plumbing · Backflow prevention devices (Water only)
permit to install one backflow device in basement of existing apartment building.
Applied Mar 27, 2012 · issued Apr 2, 2012 · Permit 12 143475 PSA
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
29 storeys · 768 homes · Mixed use
200 m away · Site plan · Under review · filed Aug 31, 2022
- Under review
37 storeys · Mixed use
230 m away · Rezoning · Under review · filed Jun 12, 2026
- Under appeal
145 Cowan Avenue and 1304 King Street West
18 storeys · 230 homes · Residential
320 m away · Rezoning · Under appeal · filed Oct 12, 2023
- Approved
27 storeys · 362 homes · Mixed use
350 m away · Site plan · Approved · filed Apr 21, 2023
- Approved
- Under review
12 storeys · 169 homes · Mixed use
380 m away · Condominium · Under review · filed Dec 16, 2021
Neighbours’ Committee of Adjustment files within 250 m
44 Gwynne Ave · Minor variance
To alter the existing two-storey towhouse dwelling by constructing a new two-storey rear addition.
130 m away · filed Oct 13, 2022 · Approved
15 Elm Grove Ave · Minor variance
To construct four secondary suites and to maintain one primary suite, within the existing two-and-one-half-storey detached dwelling, for a total of 5 residential units. Also, to provide three parking pads at the rear of the property, abutting the laneway.
180 m away · filed Jan 20, 2022 · Approved
118 Tyndall Ave · Minor variance
To alter the existing apartment building, containing 93 residential dwelling units, by converting one of the ground-floor locker storage rooms into two residential dwelling units, for a total of 95 residential dwelling units, and by constructing a long-term bike storage area within the basement parking level and short-term bike storage on the south side of the existing apartment building. Also, to renovate the other locker storage room in order to provide a new locker storage area.
250 m away · filed Dec 17, 2020 · Approved
7 Gwynne Ave · Minor variance
To construct a front walkout for a basement secondary suite.
60 m away · filed Jun 24, 2020 · Approved
12 Elm Grove Ave · Minor variance
To alter the existing four storey residential building by converting storage space on the first storey into a two-bedroom suite.
240 m away · filed Jun 15, 2020 · Approved
79 Gwynne Ave · Minor variance
To alter the existing two-storey townhouse by constructing a rear two-storey addition
230 m away · filed Apr 9, 2020 · Approved
20 1/2 Melbourne Ave · Consent
To obtain consent for a technical severance to re-establish two reidential lots which merged on title.
160 m away · filed Dec 6, 2019 · Approved
1220 King St W · Minor variance
To alter the existing two-storey mixed-use building by extending the front main wall on the ground floor to enclose a front open area.
60 m away · filed Jun 12, 2019 · 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.