Toronto address · Ward 10, Spadina-Fort York
18 Mercer St
The City of Toronto has 1 building permit 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
Designated structure · Sign building permit related
1 Overhanging Structure Sign
Applied Apr 21, 2025 · issued May 1, 2025 · completed Jun 9, 2025 · Permit 25 146866 DST
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
50 storeys · 403 homes · Mixed use
40 m away · Site plan · Under review · filed Sep 16, 2022
- Under review
35 homes · Not stated in the file
40 m away · Condominium · Under review · filed Aug 23, 2023
- Under review
645 homes · Residential
170 m away · Condominium · Under review · filed Sep 27, 2021
- Approved
- Under review
70 storeys · 929 homes · Mixed use
220 m away · Rezoning · Under review · filed Oct 10, 2024
- Under review
69 storeys · Mixed use
220 m away · Site plan · Under review · filed Apr 27, 2022
Neighbours’ Committee of Adjustment files within 250 m
370 King St W · Minor variance
120 m away · filed Sep 17, 2026 · Postponed
277 Wellington St W · Minor variance
To alter the development standards, as approved under Site Specific Zoning By-law 135-2026 (OLT), for the 60-storey mixed-use building by converting the office spaces into residential units from floors 3 to 7, and to increase the number of storeys to 65-storeys; the building height from 202.5 m to 214 m (including the mechanical penthouse); and the maximum gross floor area. This is currently under the review of Site Plan Control (File No. 20 233433 STE 10 SA). There will be a total of 807 residential dwelling units on this lot.
160 m away · filed Feb 5, 2026 · Approved
263 Adelaide St W · Minor variance
To alter the development standards (as approved under Site Specific Zoning By-law 105-2022 (OLT)) for a 47-storey mixed-use building (containing 432 residential dwelling units, retail use on the ground level, and office use on second, third and fourth levels), by reducing the required number of vehicular parking spaces for the residents of this building.
240 m away · filed Oct 23, 2025 · Approved
400 King St W · Minor variance
To alter the development standards (as approved under Site Specific Zoning By-laws 754-2021(OLT) and 757-2021(OLT)) for the 49-storey mixed-use building (currently under construction) by increasing the overall building height, and the total number of dwelling units from 612 to 630 units (by redesigning the penthouse units located on the 47, 48, and 49 floors into smaller units that will be accessed by the elevator overrun structure). Also, to reduce the number of parking spaces on-site.
220 m away · filed Sep 27, 2024 · Approved
321 King St W · Minor variance
To permit the reduction of residential parking spaces provided within the 48-storey mixed-use building.
60 m away · filed May 21, 2024 · Approved
357 King St W · Minor variance
To alter the development standards for the mixed-use building (as approved under Site Specific Zoning By-Law 812-2017) by increasing the total combined residential and non-residential gross floor area through interior alterations on the ground floor and mezzanine level.
160 m away · filed Dec 1, 2023 · Approved
55 John St · Minor variance
To construct two new storage sheds in the north courtyard of the existing 27 storey government office building to supplement the relocation of Metro Hall Early Learning Child Care Centre from the intersection of Wellington Street and John Street (south side) to the plaza at the intersection of King Street and John Street (north side). The existing shed on the south courtyard will be demolished.
140 m away · filed Oct 27, 2023 · Approved
365 King St W · Minor variance
To alter the existing five-storey mixed-use building by constructing a sixth storey addition with a rooftop patio.
170 m away · filed Nov 25, 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.