Toronto address · Ward 13, Toronto Centre
510 Ontario St
The City of Toronto has 4 building permits since 2017 (1 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.
- Inspections under way
Addition or alteration · Other
Proposal to construct a roof over existing porch at front yard of multi unit residential dwelling.
Applied Jun 6, 2018 · issued Nov 2, 2018 · Permit 18 172536 BLD
- Cancelled
Plumbing
Plumbing - Proposal to alter the existing 2½-storey converted dwelling by constructing a three-storey rear addition with basement walkout, a basement addition on the north side, a partial third floor addition, 5 balconies to the north side and rear, front porch, 12 bicycle storage shed and a detached garage with five parking spaces and a rooftop patio. Four new dwelling units are proposed for a total of 16 units in existing apartment building.
Applied Apr 24, 2014 · completed Mar 18, 2019 · Permit 14 131600 PLB
- Cancelled
Addition or alteration · Multiple projects
Proposal to alter the existing 2½-storey converted dwelling by constructing a three-storey rear addition with basement walkout, a basement addition on the north side, a partial third floor addition, 5 balconies to the north side and rear, front porch, 12 bicycle storage shed and a detached garage with five parking spaces and a rooftop patio. Four new dwelling units are proposed for a total of 16 units in existing apartment building.
Applied Mar 21, 2014 · completed Mar 18, 2019 · 4 homes added · Permit 14 131600 BLD
- Cancelled
Heating and ventilation
HVAC - Proposal to alter the existing 2½-storey converted dwelling by constructing a three-storey rear addition with basement walkout, a basement addition on the north side, a partial third floor addition, 5 balconies to the north side and rear, front porch, 12 bicycle storage shed and a detached garage with five parking spaces and a rooftop patio. Four new dwelling units are proposed for a total of 16 in existing apartment building.
Applied Mar 21, 2014 · completed Mar 18, 2019 · Permit 14 131600 HVA
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
- Submitted
- Under appeal
39 storeys · 378 homes · Residential
200 m away · Site plan · Under appeal · filed Jul 6, 2023
- Under review
39 storeys · 456 homes · Mixed use
250 m away · Condominium · Under review · filed Nov 8, 2021
- Under appeal
10 storeys · 60 homes · Mixed use
260 m away · Rezoning · Under appeal · filed Mar 17, 2023
- Under review
238-280 Wellesley Street East, 77 Howard Street and 650 Parliament Street
47 storeys · 3,182 homes · Mixed use
430 m away · Site plan · Under review · filed Apr 27, 2022
- Under review
107 homes · Residential
440 m away · Condominium · Under review · filed Oct 27, 2021
Neighbours’ Committee of Adjustment files within 250 m
183 Carlton St · Minor variance
To alter the existing two-and-one-half semi-detached building (houseplex), which is currently under construction (Building Permit 25 258356 BLD), by constructing a side (east) basement walkout with a flat roof canopy. Also, to maintain the existing rear second storey roof deck with stairs, and third storey roof deck. There will be two existing units and two new units for a total of four residential dwelling units on this lot (one unit occupying the basement level, two units occupying the first level, and one unit occupying the second and third levels).
210 m away · filed Apr 10, 2026 · Approved
209 Carlton St · Minor variance
To alter the existing three-storey semi-detached building (currently vacant and with the front and rear portion of the building, abutting Doctor O Lane, attached below grade) by converting it to a mixed-use building (service hub for the Indigenous community) with four dwelling units and community and office space on the basement, first, and second floors, by constructing front and side (west) basement additions, an enlarged ground floor terrace (at the west portion of the building), three new dormers at the rear portion of the second floor, and a rear second floor balcony at the east portion…
210 m away · filed May 27, 2025 · Approved
215 Carlton St · Minor variance
To alter the existing mixed-use three-storey semi-detached building by constructing a rear three-storey addition with a first level deck and staircase, and a green roof. Also, to construct a covered ground floor deck with a walkout basement on the east side wall of the existing building. There will be a total of 2 commercial units and 8 residential dwelling units on this lot.
220 m away · filed Jan 8, 2025 · Approved
169 Carlton St · Minor variance
To construct a one-storey ancillary structure (carport), in the rear yard, abutting the laneway (Doctor O Lane), for two parking spaces.
230 m away · filed Oct 10, 2024 · Approved
20 Aberdeen Ave · Minor variance
To alter the existing three-storey townhouse dwelling by constructing a new rear one-storey addition (with basement below), a side (east) basement walkout and a rear second storey rooftop deck (above the new rear addition). The existing rear one-storey addition will be demolished.
110 m away · filed Sep 4, 2024 · Approved
194 Carlton St · Minor variance
To convert the existing two-and-one-half-storey semi-detached mixed-use building into a three-unit dwelling (triplex).
160 m away · filed Jul 5, 2024 · Approved
37 Winchester St · Consent
To sever the existing lot into two lots and to create a new easement.
180 m away · filed May 11, 2023 · Approved
41 Rose Ave · Consent
To obtain consent for a technical severance to re-establish two residential lots which merged on title.
250 m away · filed Dec 22, 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.