Toronto address · Ward 13, Toronto Centre
300 Seaton St
The City of Toronto has 2 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
Plumbing
Plumbing - finish basement with walk-out stair
Applied Oct 28, 2020 · issued Sep 9, 2022 · completed Nov 21, 2022 · Permit 20 212383 PLB
- Closed
Small residential project · Multiple projects
finish basement with walk-out stair
Applied Oct 28, 2020 · issued Sep 20, 2022 · completed Nov 21, 2022 · Permit 20 212383 BLD
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
107 homes · Residential
90 m away · Condominium · Under review · filed Oct 27, 2021
- Under review
10 storeys · 60 homes · Mixed use
90 m away · Site plan · Under review · filed Jul 4, 2025
- Under review
10 storeys · Residential
210 m away · Condominium · Under review · filed Oct 26, 2021
- Under appeal
39 storeys · 378 homes · Residential
270 m away · Site plan · Under appeal · filed Jul 6, 2023
- Submitted
- Under review
10 storeys · Not stated in the file
360 m away · Rezoning · Under review · filed Oct 15, 2025
Neighbours’ Committee of Adjustment files within 250 m
185 Gerrard St E · Minor variance
To construct a new four-storey apartment building with a west side courtyard area at the centre of the building, a front (north) green roof, and a maintenance equipment storage area on the roof level. There will be a total of 17 bicycle parking spaces on the lot and no vehicular parking spaces will be provided. Also, to construct a rear one-storey detached ancillary building (waste storage enclosure) on the southwest corner on the lot. There will be a total of 15 residential dwelling units (12 studio units and 3 one bedroom units) on the lot.
200 m away · filed Aug 28, 2026 · Hearing scheduled
380 Berkeley St · Minor variance
To alter the existing two-and-one-half-storey semi-detached dwelling by constructing a side (south) two storey addition. Also, to construct rear ground floor and second storey bay windows, a rear second storey balcony, and a rear third storey rooftop pergola and terrace extension (above the second storey roof).
200 m away · filed Apr 16, 2026 · Approved
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).
150 m away · filed Apr 10, 2026 · Approved
311 Sherbourne St · Minor variance
To alter the existing three-storey mixed-use building by converting the storage room on the second and third levels into seven additional hostel suites (three on the second level, and four on the third level). The existing pharmacy and cafeteria on the ground level, 19 hostel suites on the second level, and 20 hostel suites on the third level will be maintained and unaltered.
80 m away · filed Apr 8, 2026 · Approved
388 Berkeley St · Minor variance
To alter the existing two-storey semi-detached dwelling by constructing a rear two-storey addition with a ground floor stair landing, and a side (south) basement walkout. The existing basement walkout and rear deck with be demolished, and a portion of the rear second storey roof will be reconstructed. Also, to construct one additional parking space (for a total of two parking spaces), abutting the laneway.
210 m away · filed Jan 12, 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…
220 m away · filed May 27, 2025 · Approved
311 Sherbourne St · Minor variance
To alter the existing three-storey commercial building (containing office uses) by converting the west half of the first storey, and the second and third storeys into a hotel use with a common use area located on the ground floor. The existing east half of the building and the existing pharmacy (located on the ground floor) will be maintained. There will be a total of 39 hotel rooms within this mixed-use building.
80 m away · filed Feb 5, 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.
240 m away · filed Jan 8, 2025 · 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.