421 Markham St

Building permits

Every permit the City lists for this address since 2017, and any still open from before, newest first.

• Drains and site services

  Drain Revision 01 - Change of proposed use from fourplex to fiveplex; Revision to basement drainage layout and backwater valves from 1 unit to 2 units. --------------------------------------------------------------------------Drain - Proposed demolition of existing 2.5 storey single family dwelling and construct a new 3-storey fourplex and 2-storey laneway suite at rear.See also 23- , 22-121983 ZAP & 22-209068 STE 11 MV.

  Applied Oct 29, 2025 · completed Dec 16, 2025 · Permit 23 230052 DRN (revision 01)

  Cancelled

• Heating and ventilation

  Revision to basement hvac layout from 1 unit to two units.HVAC - Proposed demolition of existing 2.5 storey single family dwelling and construct a new 3-storey fourplex and 2-storey laneway suite at rear.See also 23- , 22-121983 ZAP & 22-209068 STE 11 MV.

  Applied Oct 29, 2025 · issued Jan 5, 2026 · Permit 23 230052 HVA (revision 01)

  Revision issued

• Plumbing

  Plumbing Revision 01 - Change of proposed use from fourplex to fiveplex; Revision to basement drainage layout and backwater valves from 1 unit to 2 units. --------------------------------------------------------------------------Plumbing - Proposed demolition of existing 2.5 storey single family dwelling and construct a new 3-storey fourplex and 2-storey laneway suite at rear.See also 23- , 22-121983 ZAP & 22-209068 STE 11 MV.

  Applied Oct 29, 2025 · issued Dec 22, 2025 · Permit 23 230052 PLB (revision 01)

  Revision issued

• New house · New building

  Revision 1: Revision to structure, elevation, assemblies,-------------------------------------Proposed demolition of existing 2.5 storey single family dwelling and construct a new 3-storey fourplex.See also 23- , 22-121983 ZAP & 22-209068 STE 11 MV.

  Applied Sep 25, 2025 · issued Nov 6, 2025 · 1 home added · Permit 23 230052 BLD (revision 01)

  Revision issued

• Small residential project · New laneway / rear yard suite

  Revision 1: Revision to structure and ground floor plan.Proposal to construct a new 2-storey laneway suite. See folder 22-121983 ZAP & 23 230052 BLD 00 NH

  Applied Sep 25, 2025 · issued Oct 21, 2025 · 1 home added · Permit 23 230206 BLD (revision 01)

  Revision issued

• Development charges deferral

  Deferred Fees from folder 23 230206 (RSN-5367953) ZoningProcess RSN 73870393

  Applied Jan 31, 2024 · Permit 24 230206 BLD

  Open

• Development charges deferral

  Deferred Fees from folder 23 230052 (RSN-5367764) ZoningProcess RSN 73870343

  Applied Jan 26, 2024 · Permit 24 230052 BLD

  Open

• Demolition

  Proposed demolition of existing 2.5-storey single family dwelling. See folders 23-230052 BLD 00 NH & 23-191983 ZAP 00 ZR.

  Applied Nov 27, 2023 · issued Jul 15, 2024 · 1 home removed · Permit 23 230065 DEM

  Permit issued

• Small residential project · New laneway / rear yard suite

  Proposal to construct a new 2-storey laneway suite. See folder 22-121983 ZAP & 23 230052 BLD 00 NH

  Applied Nov 27, 2023 · issued Feb 13, 2024 · 1 home added · Permit 23 230206 BLD

  Permit issued

• New house · New building

  Proposed demolition of existing 2.5 storey single family dwelling and construct a new 3-storey fourplex.See also 23- , 22-121983 ZAP & 22-209068 STE 11 MV.

  Applied Nov 27, 2023 · issued Feb 8, 2024 · 4 homes added · Permit 23 230052 BLD

  Inspections under way

• Plumbing

  Plumbing - Proposed demolition of existing 2.5 storey single family dwelling and construct a new 3-storey fourplex and 2-storey laneway suite at rear.See also 23- , 22-121983 ZAP & 22-209068 STE 11 MV.

  Applied Nov 27, 2023 · issued Feb 9, 2024 · Permit 23 230052 PLB

  Permit issued

• Heating and ventilation

  HVAC - Proposed demolition of existing 2.5 storey single family dwelling and construct a new 3-storey fourplex and 2-storey laneway suite at rear.See also 23- , 22-121983 ZAP & 22-209068 STE 11 MV.

  Applied Nov 27, 2023 · issued Feb 8, 2024 · Permit 23 230052 HVA

  Permit issued

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.

• Minor variance · Other

  To construct a new three-storey fourplex dwelling with a front porch, front and rear basement walkouts, a front second storey balcony, and a window well in the side yard. Also, to construct a two-storey ancillary building (detached three-car garage at the lower level with one laneway suite above), in the rear yard, abutting the laneway.

  Decision: Approved (hearing Jan 11, 2023)

  Filed Sep 27, 2022 · File A1060/22TEY

  Closed

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

• 541 Euclid Ave · Minor variance

  200 m away · filed Sep 17, 2026 · Accepted

• 390 Markham St · Minor variance

  To alter the existing two-and-one-half-storey semi-detached dwelling by constructing a rear one-storey sunroom addition. The existing rear one-storey partial addition will be demolished.

  220 m away · filed Aug 17, 2026 · Hearing scheduled

• 202 Lippincott St · Minor variance

  To alter the existing three-storey mixed-used semi-detached building by constructing a rear second storey rooftop deck with a rear exterior staircase, a rear basement walkout, and a rear ground floor patio. Also, to construct a new rear two-storey detached ancillary building (to contain one laneway suite with a basement level and a rooftop deck with rear stairs), abutting Antonio Fernandes Lane and Ulster Street. There will be a total of one commercial unit (laundromat within the main mixed-use building) and six residential dwelling units on this lot (five units within the main mixed-use buil…

  220 m away · filed May 4, 2026 · Approved

• 519 Euclid Ave · Minor variance

  To legalize and to maintain the rear ground floor deck with stairs that was constructed without an authorized building permit.

  240 m away · filed May 4, 2026 · Postponed

• 248 Lippincott St · Minor variance

  To alter the existing two-and-one-half-storey detached dwelling by constructing a partial rear third storey addition, and a rear second storey deck above the existing rear one-storey portion of the dwelling. Also, to construct a new one-storey detached ancillary building (containing a one car garage), in the rear yard, abutting the laneway (James Hales Lane).

  180 m away · filed Oct 30, 2025 · Approved

• 404 Palmerston Blvd · Minor variance

  To alter the three-storey detached dwelling (containing three dwelling units) with a front covered porch, front basement walkout, rear ground floor patio, and partially covered rear third floor rooftop terrace (on the roof of the second floor below), currently under construction, by constructing a rear basement addition below the rear ground floor patio. Also, to maintain the two-storey ancillary building (containing a two-car garage and one laneway suite) (currently under construction, as approved by Minor Variance Application A0793/23TEY). There will be a total of four residential dwelling…

  160 m away · filed May 7, 2025 · Approved

• 390 Palmerston Blvd · Minor variance

  Please refer to A0096/25TEY.

  210 m away · filed Feb 5, 2025 · Application withdrawn

• 390 Palmerston Blvd · Minor variance

  To alter the existing two-and-one-half-storey detached dwelling by constructing a rear two-storey addition with front and side (south) basement walkouts, a complete third storey addition with front and rear terraces, and a rear ground floor deck with stairs. Also, to alter the existing one-storey ancillary building (detached garage in the rear yard, abutting the laneway) by constructing a complete second storey addition (to contain one laneway suite). There will be a total of four residential dwelling units on this lot (three units within the main dwelling (triplex) and one unit within the an…

  210 m away · filed Feb 5, 2025 · Approved

Everything planned in University-Rosedale