Toronto address · Ward 24, Scarborough-Guildwood
10 Welwyn Ave
The City of Toronto has 8 building permits 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
Heating and ventilation
Rev 01 - Proposal for a second unit in the basement.HVAC - Proposal to construct a finished basement in an existing SFD-detached house.
Applied Apr 14, 2025 · issued Apr 17, 2025 · completed Jul 9, 2025 · Permit 24 252523 HVA (revision 01)
- Closed
Plumbing
Rev 01 - Proposal for a second unit in the basement.Plumbing - Proposal to construct a finished basement in an existing SFD-detached house.
Applied Apr 14, 2025 · issued Apr 30, 2025 · completed Jul 1, 2025 · Permit 24 252523 PLB (revision 01)
- Closed
Small residential project · Second suite (New)
Rev 02 - Proposal for a second unit in the basement.REVISION 01: REVISIONS INCLDUING ENLARGING WINDOWProposal to construct a finished basement in an existing SFD-detached house.
Applied Apr 14, 2025 · issued Apr 16, 2025 · completed Jul 1, 2025 · 1 home added · Permit 24 252523 BLD (revision 02)
- Closed
Drains and site services
Drain - Proposal to construct a finished basement in an existing SFD-detached house.
Applied Apr 14, 2025 · issued Apr 16, 2025 · completed Apr 25, 2025 · Permit 24 252523 DRN
- Closed
Small residential project · Finishing basements
REVISION 01: REVISIONS INCLDUING ENLARGING WINDOWProposal to construct a finished basement in an existing SFD-detached house.
Applied Jan 27, 2025 · issued Jan 28, 2025 · completed Jul 1, 2025 · Permit 24 252523 BLD (revision 01)
- Closed
Heating and ventilation
HVAC - Proposal to construct a finished basement in an existing SFD-detached house.
Applied Dec 27, 2024 · issued Jan 3, 2025 · completed Jul 9, 2025 · Permit 24 252523 HVA
- Closed
Small residential project · Finishing basements
Proposal to construct a finished basement in an existing SFD-detached house.
Applied Dec 20, 2024 · issued Dec 27, 2024 · completed Jul 1, 2025 · Permit 24 252523 BLD
- Closed
Plumbing
Plumbing - Proposal to construct a finished basement in an existing SFD-detached house.
Applied Dec 20, 2024 · issued Dec 27, 2024 · completed Jul 1, 2025 · Permit 24 252523 PLB
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
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
851 Brimorton Dr · Minor variance
To legalize and maintain the rear yard one-storey addition and a side yard addition of a gazebo to the existing one-storey detached dwelling.
120 m away · filed Aug 8, 2025 · Approved
4 Greenock Ave · Minor variance
To permit a rear addition to the existing 2-storey detached dwelling.
160 m away · filed Oct 11, 2023 · Approved
27 Greenock Ave · Minor variance
The applicant is seeking relief from the provisions of the Zoning By-law to construct a new second storey addition to the existing single family residential dwelling.
210 m away · filed Dec 9, 2019 · 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.