Toronto address · Ward 13, Toronto Centre
666 Ontario St
The City of Toronto has 1 building permit 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.
- Permit issued
Heating and ventilation · Other
Proposal for ventilation louver & duct retrofit.
Applied Apr 7, 2026 · issued Jun 5, 2026 · Permit 26 139822 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
238-280 Wellesley Street East, 77 Howard Street and 650 Parliament Street
47 storeys · 3,182 homes · Mixed use
120 m away · Site plan · Under review · filed Apr 27, 2022
- Approved
41 storeys · 460 homes · Mixed use
150 m away · Rezoning · Approved · filed Aug 25, 2025
- Under review
566-576 Sherbourne Street and 29-37 Linden Street
69 storeys · 872 homes · Residential
280 m away · Site plan · Under review · filed Apr 27, 2023
- Under appeal
69 storeys · 823 homes · Residential
300 m away · Rezoning · Under appeal · filed Feb 26, 2024
- Under review
69 storeys · 770 homes · Residential
340 m away · Site plan · Under review · filed Jun 21, 2023
- Under review
2-8 Earl Street and 5 Huntley Street
63 storeys · Residential
370 m away · Site plan · Under review · filed Sep 23, 2024
Neighbours’ Committee of Adjustment files within 250 m
545-565 Sherbourne St · Consent
To obtain consent to sever a portion of land for the purpose of a lot addition.
150 m away · filed May 2, 2023 · Approved
50 Earl St · Minor variance
To convert a semi-enclosed storage area on the ground floor of the existing apartment building to a commercial kitchen.
200 m away · filed Apr 24, 2021 · Approved
50 Earl St · Minor variance
To convert a semi-enclosed storage area on the ground floor to a commercial kitchen.
200 m away · filed Jun 8, 2020 · Approved
24 Howard St · Minor variance
To maintain the designated three-storey converted house with 4 dwelling units on the conveyed lot as described in Consent Application B0070/15TEY.
240 m away · filed Aug 27, 2015 · Approved
58 Howard St · Consent
To obtain consent to sever the property into two lots.
220 m away · filed Aug 27, 2015 · 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.