Toronto address · Ward 20, Scarborough Southwest
20 Mack Ave
The City of Toronto has 5 building permits since 2017 (5 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
Small residential project · Multiple projects
Revision 01: interior alterations and structural changes in the basmentProposal to construct a second unit in the existing basement and rear addition at the ground level.
Applied Dec 22, 2022 · issued Jan 25, 2023 · Permit 22 107312 BLD (revision 01)
- Not started
Plumbing
Revision 01: intertior alterations and structural changes in the basment Plumbing - Proposal to construct a second unit in the existing basement and rear addition at the ground level.
Applied Dec 22, 2022 · Permit 22 107312 PLB (revision 01)
- Inspections under way
Plumbing
Plumbing - Proposal to construct a second unit in the existing basement and rear addition at the ground level.
Applied Jan 25, 2022 · issued Sep 8, 2022 · Permit 22 107312 PLB
- Inspections under way
Small residential project · Multiple projects
Proposal to construct a second unit in the existing basement and rear addition at the ground level.
Applied Jan 25, 2022 · issued Sep 8, 2022 · Permit 22 107312 BLD
- Inspections under way
Heating and ventilation
HVAC - Proposal to construct a second unit in the existing basement and rear addition at the ground level.
Applied Jan 25, 2022 · issued Sep 8, 2022 · Permit 22 107312 HVA
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
594 Warden Ave · Minor variance
Proposed front and rear addition including interior alterations to existing dwelling. Demolition of front sunroom and rear addition. New house by way of renovation.
200 m away · filed Sep 2, 2026 · Accepted
291 Danforth Rd · Minor variance
Interior alterations to the existing commercial building to permit a restaurant. This application was previously deferred at the April 8, 2026 hearing.
250 m away · filed Nov 20, 2025 · Approved
56 Wolcott Ave · Minor variance
To construct a new detached three-storey dwelling. Cross reference Consent and Minor Variance applications B0010/25SC & A0055/25SC being considered jointly.
230 m away · filed Mar 10, 2025 · Application withdrawn
56 Wolcott Ave · Minor variance
To construct a new detached three-storey dwelling. Cross reference Consent and Minor Variance applications B0010/25SC & A0054/25SC being considered jointly.
230 m away · filed Mar 10, 2025 · Application withdrawn
56 Wolcott Ave · Consent
To obtain consent to sever the existing lot into two new residential lots. Cross reference Minor Variance applications A0054/25SC & A0055/25SC being considered jointly.
230 m away · filed Mar 10, 2025 · Application withdrawn
67 Mystic Ave · Minor variance
To construct a new two storey detached dwelling.
190 m away · filed Feb 8, 2023 · Approved
10 Mack Ave · Minor variance
To construct a new two storey dwelling.
50 m away · filed Jan 6, 2021 · Approved
18 Mack Ave · Minor variance
To construct a new two-storey detached dwelling.
20 m away · filed Mar 19, 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.