Toronto address · Ward 18, Willowdale
3 Diagonal Rd
The City of Toronto has 9 building permits since 2017 (5 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.
- Closed
Heating and ventilation
REV 01: Additional basement windows and removal of second floor window.HVAC - Proposal to construct a new 2 storey single family dwelling and demolish the existing 1 storey single family dwelling
Applied Jul 28, 2025 · issued Sep 3, 2025 · completed Sep 14, 2026 · Permit 20 212334 HVA (revision 01)
- Revision issued
New house · New building
REV 03: Additional basement windows and removal of second floor window.Revision #02 - Proposed secondary unit, add walkout.Rev 01: The width of the proposed house to be decreased, instead length of the building to be increased to accommodateProposal to construct a new 2 storey single family dwelling and demolish the existing 1 storey single family dwelling
Applied Jul 28, 2025 · issued Aug 8, 2025 · Permit 20 212334 BLD (revision 03)
- Revision issued
New house · New building
Revision #02 - Proposed secondary unit, add walkout.Rev 01: The width of the proposed house to be decreased, instead length of the building to be increased to accommodateProposal to construct a new 2 storey single family dwelling and demolish the existing 1 storey single family dwelling
Applied May 28, 2024 · issued Jul 4, 2024 · Permit 20 212334 BLD (revision 02)
- Revision issued
New house · New building
Rev 01: The width of the proposed house to be decreased, instead length of the building to be increased to accommodateProposal to construct a new 2 storey single family dwelling and demolish the existing 1 storey single family dwelling
Applied Jul 4, 2023 · issued Jul 18, 2023 · Permit 20 212334 BLD (revision 01)
- Inspections under way
New house · New building
Proposal to construct a new 2 storey single family dwelling and demolish the existing 1 storey single family dwelling
Applied Oct 28, 2020 · issued Nov 16, 2020 · 1 home added · Permit 20 212334 BLD
- Closed
Drains and site services
Drain - Proposal to construct a new 2 storey single family dwelling and demolish the existing 1 storey single family dwelling
Applied Oct 28, 2020 · issued Nov 16, 2020 · completed Sep 14, 2026 · Permit 20 212334 DRN
- Inspections under way
Plumbing
Plumbing - Proposal to construct a new 2 storey single family dwelling and demolish the existing 1 storey single family dwelling
Applied Oct 28, 2020 · issued Nov 16, 2020 · Permit 20 212334 PLB
- Closed
Heating and ventilation
HVAC - Proposal to construct a new 2 storey single family dwelling and demolish the existing 1 storey single family dwelling
Applied Oct 28, 2020 · issued Nov 18, 2020 · completed Sep 14, 2026 · Permit 20 212334 HVA
- Closed
Demolition
Proposal to demolish existing 1 storey single family dwelling to construct a new 2 storey single family dwelling
Applied Oct 28, 2020 · issued Nov 16, 2020 · completed May 12, 2025 · 1 home removed · Permit 20 212363 DEM
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.
- Closed
Minor variance · New R building
To construct a new dwelling.
Decision: Approved (hearing Sep 10, 2020)
Filed Jun 2, 2020 · File A0271/20NY
What’s planned nearby
Development sites within 500 m
No rezoning, site plan, subdivision or condominium file open within 500 m, and no pre-construction project on the site.
Neighbours’ Committee of Adjustment files within 250 m
142 Betty Ann Dr · Minor variance
To construct a three-storey fourplex with front yard parking and a garden suite.
100 m away · filed Mar 19, 2026 · Approved
8 Abbotsford Rd · Minor variance
To construct a new dwelling.
240 m away · filed Feb 12, 2026 · Approved
10 Abbotsford Rd · Minor variance
To construct a new dwelling with a front porch, rear deck and balcony.
250 m away · filed Sep 18, 2025 · Approved
142 Park Home Ave · Minor variance
To construct a new dwelling.
170 m away · filed Dec 5, 2024 · Approved
238 Ellerslie Ave · Minor variance
To construct a new detached dwelling
140 m away · filed Aug 1, 2024 · Approved
147 Park Home Ave · Minor variance
To construct a new dwelling.
220 m away · filed May 3, 2024 · Approved
186 Ellerslie Ave · Consent
To obtain consent to sever the existing property into 2 residential lots and construct two new dwellings. File numbers B0022/24NY, A0224/24NY, A0225/24NY will be jointly considered. Please note, the file was deferred on April 3, 2025, to allow the applicant to obtain a revised zoning notice.
170 m away · filed Apr 30, 2024 · Approved
186 Ellerslie Ave · Minor variance
To obtain consent to sever the existing property into 2 residential lots and construct two new detached dwellings. Please note, the file was deferred on April 3, 2025, to allow the applicant to obtain aa revizsed zoning notice. File numbers B0022/24NY, A0224/24NY, A0225/24NY will be jointly considered.
170 m away · filed Apr 25, 2024 · 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.