Toronto address · Ward 20, Scarborough Southwest
21 Clapperton Ave
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.
- Inspections under way
Drains and site services · Back water valve (Sewer only)
Installation of a backwater valve and sump pump to existing dwelling
Applied May 6, 2019 · issued May 8, 2019 · Permit 19 149812 DRN
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
4 storeys · Residential
380 m away · Site plan · Under review · filed Aug 24, 2022
- Under review
3431-3449 St Clair Avenue East and 67 Elfreda Boulevard
16 storeys · 388 homes · Mixed use
390 m away · Condominium · Under review · filed Oct 28, 2021
- Under review
66-130 Santamonica Boulevard, 134-169 Pilkington Drive and 7 other streets
17 storeys · 290 homes · Residential
410 m away · Site plan · Under review · filed Apr 24, 2025
- Approved
16 storeys · 388 homes · Mixed use
430 m away · Rezoning · Approved · filed Sep 20, 2022
Neighbours’ Committee of Adjustment files within 250 m
171 Santamonica Blvd · Minor variance
To enclose the front yard porch.
110 m away · filed Feb 26, 2024 · Approved
155 Santamonica Blvd · Minor variance
To enclose the existing front open porch to use it as an all season verandah.
100 m away · filed Apr 19, 2022 · Approved
104 Trinnell Blvd · Minor variance
The applicant is seeking relief from the provisions of the Zoning By-law to construct a new two storey detached residential dwelling. The existing dwelling would be demolished.
110 m away · filed Sep 13, 2019 · Refused
90 Trinnell Blvd · Minor variance
Proposed second storey addition and one-storey addition on the north side of the dwelling.
50 m away · filed Sep 12, 2018 · 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.