Toronto address · Ward 10, Spadina-Fort York
15 Mercer St
The City of Toronto has 37 building permits since 2017 (28 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.
- Revision issued
Plumbing
Rev 02:Revisions to Suites 4501 and 4505 in the East Tower. Rev 01:Revisions to the current BLD, HVAC, and PLB permits for the updated hotel suites on floors 41-45 in the West Tower.Plumbing - Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and five levels of underground parking.
Applied Jan 19, 2026 · issued Feb 19, 2026 · Permit 17 273784 PLB (revision 02)
- Revision issued
New building
Revision 04: Revision to the existing building permit drawings to accurately document and incorporate the as-built conditions.
Applied Dec 29, 2025 · issued Mar 11, 2026 · Permit 17 273784 BLD (revision 04)
- Revision issued
Heating and ventilation
Rev 03 - This revision updates the existing HVAC permit to accurately reflect and incorporate the as-built conditions of the east tower amenities.Revision: This submittal updates the existing building and HVAC permits to accurately document and incorporate the as-built conditions.
Applied Dec 4, 2025 · issued Feb 19, 2026 · Permit 17 273784 HVA (revision 03)
- Revision issued
Heating and ventilation
Revision: This submittal updates the existing building and HVAC permits to accurately document and incorporate the as-built conditions.
Applied Nov 20, 2025 · issued Nov 28, 2025 · Permit 17 273784 HVA (revision 02)
- Revision issued
New building
Revision: This submittal updates the existing building and HVAC permits to accurately document and incorporate the as-built conditions.
Applied Nov 20, 2025 · issued Dec 4, 2025 · Permit 17 273784 BLD (revision 03)
- Revision issued
Plumbing
REV Plumbing - Update on project address onlyCONSTRUCTION OF NEW INTERIOR PARTITIONS (Convenience address 19 Mercer St)
Applied Sep 12, 2025 · issued Oct 10, 2025 · Permit 24 220630 PLB (revision 02)
- Revision issued
Heating and ventilation
REV HVAC - Update on project address onlyCONSTRUCTION OF NEW INTERIOR PARTITIONS (Convenience address 19 Mercer St)
Applied Sep 12, 2025 · issued Oct 10, 2025 · Permit 24 220630 HVA (revision 03)
- Revision issued
Addition or alteration · Interior alterations
REV: Update on project address onlyCONSTRUCTION OF NEW INTERIOR PARTITIONS (Convenience address 19 Mercer St)
Applied Sep 12, 2025 · issued Oct 8, 2025 · Permit 24 220630 BLD (revision 03)
- Revision issued
Heating and ventilation
Rev hvac - revision to permit due to site conditionsconstruction of new interior partitions
Applied Jun 10, 2025 · issued Jul 7, 2025 · Permit 24 220630 HVA (revision 02)
- Revision issued
Addition or alteration · Interior alterations
REV: REVISION TO PERMIT DUE TO SITE CONDITIONS ( (Convenience address 19 Mercer St)CONSTRUCTION OF NEW INTERIOR PARTITIONS
Applied Jun 10, 2025 · issued Aug 8, 2025 · Permit 24 220630 BLD (revision 02)
- Cancelled
Heating and ventilation
REV 01: Revised floor plan due to site conditions.HVAC - CONSTRUCTION OF NEW INTERIOR PARTITIONS
Applied May 28, 2025 · completed Jun 6, 2025 · Permit 24 220630 HVA (revision 01)
- Revision issued
Plumbing
Rev 01 - Revisions to the current BLD, HVAC, and PLB permits for the updated hotel suites on floors 41-45 in the West Tower.Plumbing - Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and five levels of underground parking.
Applied Mar 12, 2025 · issued Mar 25, 2025 · Permit 17 273784 PLB (revision 01)
Show 25 more permits
- Revision issued
New building
Rev 02 - Revisions to the current BLD, HVAC, and PLB permits for the updated hotel suites on floors 41-45 in the West Tower.REV 01: The window sprinklers on the south elevation are relocated to avoid an operable window below per the comments received during the HVAC Permit review. The updated limiting distance and exposed building face calculation are provided as well. To be read in conjunction with 22 168056 ALT 00 AS.Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space co…
Applied Mar 12, 2025 · issued Apr 9, 2025 · Permit 17 273784 BLD (revision 02)
- Revision issued
Heating and ventilation
Rev 01 - Revisions to the current BLD, HVAC, and PLB permits for the updated hotel suites on floors 41-45 in the West Tower.HVAC - Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and five levels of underground parking.
Applied Mar 12, 2025 · issued Mar 25, 2025 · Permit 17 273784 HVA (revision 01)
- Inspections under way
Plumbing
Plumbing - CONSTRUCTION OF NEW INTERIOR PARTITIONS (Convenience address 19 Mercer St)
Applied Oct 1, 2024 · issued Nov 20, 2024 · Permit 24 220630 PLB
- Inspections under way
Heating and ventilation
HVAC - CONSTRUCTION OF NEW INTERIOR PARTITIONS (Convenience address 19 Mercer St)
Applied Oct 1, 2024 · issued Jan 16, 2025 · Permit 24 220630 HVA
- Inspections under way
Addition or alteration · Interior alterations
CONSTRUCTION OF NEW INTERIOR PARTITIONS (Convenience address 19 Mercer St)
Applied Oct 1, 2024 · issued Nov 1, 2024 · Permit 24 220630 BLD
- Under review
Alternative solution
Proposal to use window sprinklers and/or close spaced sprinklers for protection of unprotected openings in the southern exposing facade at 15-35 Mercer.
Applied Jun 27, 2022 · completed Jul 6, 2022 · Permit 22 168056 ALT
- Revision issued
New building
REV 01: The window sprinklers on the south elevation are relocated to avoid an operable window below per the comments received during the HVAC Permit review. The updated limiting distance and exposed building face calculation are provided as well. To be read in conjunction with 22 168056 ALT 00 AS.Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and five levels of underground parking.
Applied Apr 19, 2022 · issued Sep 21, 2022 · Permit 17 273784 BLD (revision 01)
- Inspections under way
Heating and ventilation
HVAC - Proposal for Interior fit-out for Hotel. "Nobu Hotel"
Applied Feb 1, 2022 · issued Nov 15, 2022 · Permit 22 109594 HVA
- Inspections under way
Addition or alteration · Interior alterations
Proposal for Interior fit-out for Hotel. "Nobu Hotel"
Applied Feb 1, 2022 · issued Nov 15, 2022 · Permit 22 109594 BLD
- Inspections under way
Plumbing
Plumbing - Proposal for Interior fit-out for Hotel. "Nobu Hotel"
Applied Feb 1, 2022 · issued Nov 15, 2022 · Permit 22 109594 PLB
- Closed
Addition or alteration · Interior alterations
Proposal for interior fit-out for Restaurant. "Nobu Restaurant"
Applied Feb 1, 2022 · issued Jan 21, 2023 · completed Jul 10, 2024 · Permit 22 109553 BLD
- Closed
Heating and ventilation
HVAC - Proposal for interior fit-out for Restaurant.
Applied Feb 1, 2022 · issued Jan 21, 2023 · completed Jul 10, 2024 · Permit 22 109553 HVA
- Closed
Plumbing
Plumbing - Proposal for interior fit-out for Restaurant.
Applied Feb 1, 2022 · issued Jan 21, 2023 · completed Jul 3, 2024 · Permit 22 109553 PLB
- Application received
Alternative solution
Applied Mar 29, 2021 · Permit 21 133396 ALT
- Cancelled
Conditional permit · Partial permit - structural framing
Conditional Permit - Part Permit - Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and five levels of underground parking.
Applied Sep 18, 2018 · issued Oct 1, 2018 · completed May 27, 2020 · Permit 17 273784 STR
- Cancelled
Conditional permit · Partial permit - shoring
Conditional Permit - Part Permit - Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and six levels of underground parking.
Applied Aug 14, 2018 · issued Sep 14, 2018 · completed Oct 1, 2018 · Permit 17 273784 SHO
- Inspections under way
Plumbing
Plumbing - Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and five levels of underground parking.
Applied Dec 11, 2017 · issued Jan 24, 2022 · Permit 17 273784 PLB
- Closed
Addition or alteration · Other
Proposal to demolish existing 2 storey nightclub + 4 + 2 storey commercial building and to keep existing facade for heritage purposes.15/19/31 Mercer St.Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and six levels of underground parking.
Applied Dec 11, 2017 · issued Sep 14, 2018 · completed Dec 22, 2020 · Permit 17 273794 BLD
- Inspections under way
New building
Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and five levels of underground parking.
Applied Dec 11, 2017 · issued Jul 5, 2021 · 658 homes added · Permit 17 273784 BLD
- Inspections under way
Drains and site services
Drain - Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and five levels of underground parking.
Applied Dec 11, 2017 · issued May 1, 2019 · Permit 17 273784 DRN
- Inspections under way
Heating and ventilation
HVAC - Proposal to construct a mixed-used building consisting of two 45-storey towers connected by a nine-storey base building podium, hotel space with 36 suites, residential space comprising 658 dwelling units, commercial at grade and five levels of underground parking.
Applied Dec 11, 2017 · issued May 5, 2022 · Permit 17 273784 HVA
- Approved
Alternative solution
Alternative Solution to provide 65 mm standpipe system hose valve connections in general conformance with the 2015 National Building Code (NBC) and the 2013 Edition of NFPA 14, `Standard for Installation of Standpipe and Hose System¿ (as referenced by the NBC) in this fully sprinklered building.
Applied Dec 11, 2017 · completed May 12, 2020 · Permit 17 273812 ALT
- Cancelled
Designated structure · Sign building permit related
To erect and display one illuminated projecting sign.**MASCOT BREWERY**
Applied Sep 27, 2016 · completed Oct 8, 2019 · Permit 16 229128 DST
- Closed
Temporary structure · Certified tents
Installation of Temporary 10'X40' canopy for red carpet. installed on 2.13.2016 at 2:00pm and Removed on 2.14.2016 at 2:30am on city sidewalk. There will be no sidewalls installed - will not obstruct sidewalk. Tent will be anchored with concrete weights. Road Closure proposal has been submitted for Mercer between John and Blue Jays Way
Applied Feb 9, 2016 · issued Feb 11, 2016 · completed Aug 25, 2025 · Permit 16 114447 TPS
- Inspections under way
Heating and ventilation · Other
Proposal to install a kitchen exhaust and minor duct work to an existing restaurant. No construction is proposed.
Applied Apr 22, 2009 · issued May 21, 2009 · Permit 09 128560 MSA
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
35 homes · Not stated in the file
20 m away · Condominium · Under review · filed Aug 23, 2023
- Under review
50 storeys · 403 homes · Mixed use
70 m away · Site plan · Under review · filed Sep 16, 2022
- Under review
645 homes · Residential
150 m away · Condominium · Under review · filed Sep 27, 2021
- Under review
70 storeys · 929 homes · Mixed use
190 m away · Rezoning · Under review · filed Oct 10, 2024
- Under review
69 storeys · Mixed use
190 m away · Site plan · Under review · filed Apr 27, 2022
- Approved
Neighbours’ Committee of Adjustment files within 250 m
370 King St W · Minor variance
130 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.
140 m away · filed Feb 5, 2026 · 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.
70 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.
150 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.
150 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.
160 m away · filed Nov 25, 2022 · Approved
28 Widmer St · Consent
To obtain consent to sever the property to create two new lots and to create various easements/rights-of-way to facilitate access and servicing. The creation of the new lots provides for as-built adjustments to the property boundary of the residential portion of the mixed-use development currently under construction on the subject lands (the Existing Residential Parcel), as previously established pursuant to Committee of Adjustment decision number B0065/17TEY.
210 m away · filed Oct 26, 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.