thepermitmap

Street · 5491 of 8,565 by permit count

Building permits on Costain Ave

The City of Toronto has 20 building permits on record for Costain Ave, going back to 2001. Those permits created 1 homes and removed 0, a net change of +1. Declared construction value totals $238K. The most recent permit was issued May 19, 2021 at 8 Costain Ave.

Permits on record
202001–2021
Declared construction value
$238Kas filed, not adjusted
Homes created
1dwelling units
Homes removed
0net +1

Permits issued per year

20012021 (part year)

Most common work

  • Back Water Valve (Sewer only)5 · 25%
  • Multiple Projects4 · 20%
  • Building Permit Related(PS)3 · 15%
  • Garage2 · 10%
  • Building Permit Related(MS)2 · 10%
  • Fixtures/Roof Drains: SFD2 · 10%
  • Addition(s)1 · 5%
  • Backflow Prevention Devices (Water only)1 · 5%

Structures worked on

  • SFD - Detached8 · 40%
  • SFD - Semi-Detached8 · 40%
  • 2 Unit - Detached4 · 20%

Most recent permits

Issued Work What was filed Value Status
May 19, 2021 Back Water Valve (Sewer only) install BWV Closed
May 6, 2021 Multiple Projects Revision to - skylight framing, front window framing side second floor window framing.Proposal for interior alterations to an existing two storey dwelling. Closed
Apr 28, 2021 Building Permit Related(MS) HVAC - Proposal for interior alterations to an existing two storey dwelling. Closed
Apr 21, 2021 Multiple Projects Renovations of the existing detached two storey dwelling to create a secondary suite in the basement and renovate first floor. $150K Closed
Apr 21, 2021 Building Permit Related(PS) Plumbing - Renovations of the existing detached two storey dwelling to create a secondary suite in the basement and renovate first floor. Closed
Apr 21, 2021 Building Permit Related(MS) HVAC - Renovations of the existing detached two storey dwelling to create a secondary suite in the basement and renovate first floor. Closed
Apr 12, 2021 Building Permit Related(PS) Plumbing - Proposal for alterations to the basement for a new secondary suite, a new side yard basement walkout stair, with interior alterations to the ground floor of an existing two storey dwelling. Closed
Nov 25, 2019 Back Water Valve (Sewer only) Proposed Back Water Valve (Sewer only). Closed
Oct 19, 2017 Back Water Valve (Sewer only) Proposed Back Water Valve (Sewer only) Closed
Aug 31, 2016 Back Water Valve (Sewer only) Proposal to install a back water valve in main line. Closed
Jun 30, 2015 Building Permit Related(PS) Plumbing - Construct a one storey rear addition (6.7m2) and a covered deck at rear of dwelling Closed
Jun 26, 2015 Multiple Projects Construct a one storey rear addition (6.7m2) and a covered deck at rear of dwelling $10K Closed
Jun 2, 2015 Back Water Valve (Sewer only) to install a 4 inch mainline backwater valve Closed
Aug 18, 2014 Addition(s) Proposal for a 2nd floor front dormer addition in existing semi-detached single family dwelling. $25K Closed
Jan 14, 2013 Backflow Prevention Devices (Water only) Proposal to install 1 backwater valve on the sanitary line of existing SFD-semi dwelling. $2K Closed
Mar 20, 2012 Multiple Projects Proposed rear addition and new rear deck located on the second storey. $40K Closed
Jul 20, 2004 Garage Build replacement garage at rear. $7K Open
Apr 27, 2004 Garage To demolish detahced garage in rear yard $1K Closed
Jun 27, 2001 Fixtures/Roof Drains: SFD full drain replacement form house (outside) to property line. $2K Closed
Jun 27, 2001 Fixtures/Roof Drains: SFD full drain replacement form house (outside) to property line. $2K Closed

The 20 most recent of 20 permits on record. Figures come from the City’s active and cleared permit datasets, refreshed daily — what that covers, and what it misses.

Source
City of Toronto Open Data
Dataset
Building permits, active + cleared
Records
20
City refresh
2026-09-12 10:24
Page built
2026-09-12
Sheet
STR-196