Toronto address · Ward 13, Toronto Centre
255 Seaton St
The City of Toronto has 8 building permits since 2017 (8 still open) 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.
- Revision issued
Heating and ventilation
REV 1 HVAC: Rev.01: All the same except main floor now is also heated by radiant floor over pour.Rev.00: New added 3rd floor to existing house; Existing house to be renovated; Radiant floor over pour& new high efficiency gas boiler heating whole house (except main floor to be heated by new rads);Basement (unit 2) has one HRV & upper floors (unit 1) has another HRV for mechanical ventilation; 3rdfloor each bedroom has one ashp for cooling.HVAC - Proposal for third floor addition, second suite in basement, covered front porch, rear deck and balcony in the existing single family townhouse.
Applied May 21, 2024 · issued May 27, 2024 · Permit 22 240008 HVA (revision 01)
- Revision issued
Small residential project · Multiple projects
Revision 01: Proposed revision to address existing site conditions.Proposal for third floor addition, second suite in basement, covered front porch, rear deck and balcony in the existing single family townhouse.
Applied Mar 9, 2023 · issued Jul 6, 2023 · Permit 22 240008 BLD (revision 01)
- Inspections under way
Heating and ventilation
HVAC - Proposal for third floor addition, second suite in basement, covered front porch, rear deck and balcony in the existing single family townhouse.
Applied Dec 15, 2022 · issued Jan 18, 2023 · Permit 22 240008 HVA
- Inspections under way
Small residential project · Multiple projects
Proposal for third floor addition, second suite in basement, covered front porch, rear deck and balcony in the existing single family townhouse.
Applied Dec 15, 2022 · issued Jan 18, 2023 · 1 home added · Permit 22 240008 BLD
- Inspections under way
Plumbing
Plumbing - Proposal for third floor addition, second suite in basement, covered front porch, rear deck and balcony in the existing single family townhouse.
Applied Dec 15, 2022 · issued Jan 18, 2023 · Permit 22 240008 PLB
- Inspections under way
Drains and site services
Drain - Proposal to underpin the existing basement and construct both front and rear walkouts.
Applied Jul 28, 2020 · issued Oct 28, 2020 · Permit 20 173725 DRN
- Inspections under way
Plumbing
Plumbing - Proposal to underpin the existing basement and construct both front and rear walkouts.
Applied Jul 28, 2020 · issued Oct 28, 2020 · Permit 20 173725 PLB
- Inspections under way
Small residential project · Multiple projects
Proposal to underpin the existing basement, construct a rear first floor deck and rear basement walkout.
Applied Jul 28, 2020 · issued Oct 28, 2020 · Permit 20 173725 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.
- TLAB appeal
Minor variance · R addition
To alter the existing two-storey semi-detached dwelling by constructing a third storey addition, a rear third storey balcony, a rear deck, a front porch, a front walkout and a secondary suite in the basement.
Decision: Approved (hearing May 12, 2021)
Filed Dec 31, 2020 · File A1216/20TEY
What’s planned nearby
Development sites within 500 m
- Under review
107 homes · Residential
70 m away · Condominium · Under review · filed Oct 27, 2021
- Under review
10 storeys · 60 homes · Mixed use
100 m away · Site plan · Under review · filed Jul 4, 2025
- Under review
10 storeys · Residential
190 m away · Condominium · Under review · filed Oct 26, 2021
- Under review
14 storeys · 137 homes · Mixed use
300 m away · Site plan · Under review · filed Oct 18, 2021
- Now selling
- Under review
11 storeys · Mixed use
340 m away · Site plan · Under review · filed May 26, 2026
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.
230 m away · filed Aug 28, 2026 · Hearing scheduled
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.
160 m away · filed Apr 8, 2026 · Approved
320 Ontario St · Minor variance
To alter the existing two-storey detached dwelling by constructing a rear two-storey addition with a ground floor covered deck. The existing rear one-storey addition and rear deck will be demolished.
130 m away · filed Apr 10, 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.
160 m away · filed Feb 5, 2025 · Approved
268 Seaton St · Minor variance
To convert the existing two-and-one-half-storey rowhouse into a 12-room rooming house by constructing a rear third storey addition with a balcony.
50 m away · filed Feb 8, 2024 · Approved
227 Gerrard St E · Minor variance
To alter the development standards (as approved under Site Specific Zoning By-laws 887-2021(OLT) and 888-2021(OLT)), for a 7-storey mixed-use building, by increasing the number of dwelling units.
70 m away · filed Nov 10, 2023 · Approved
391 Ontario St · Minor variance
To alter the existing two-storey mixed-use building by constructing a partial third storey addition (north side) with a deck on the roof of the second storey portion (south side) of the building. The existing ground floor commercial space will be maintained and unaltered and the existing residential unit will now occupy both the second and third storeys of the building.
90 m away · filed Aug 23, 2023 · Approved
394 Dundas St E · Minor variance
To permit the existing two-storey rowhouse into a rooming house (a total of 5 suites) through interior alterations. Also, to maintain the existing rear one-storey ancillary building (detached garage), in the rear yard, abutting the laneway.
250 m away · filed Aug 14, 2023 · 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.