Street · 1860 of 8,565 by permit count
Building permits on Seneca Ave
The City of Toronto has 104 building permits on record for Seneca Ave, going back to 1996. Those permits created 7 homes and removed 3, a net change of +4. Declared construction value totals $2.9M. The most recent permit was issued Nov 24, 2025 at 39 Seneca Ave.
- Permits on record
- 1041996–2025
- Declared construction value
- $2.9Mas filed, not adjusted
- Homes created
- 7dwelling units
- Homes removed
- 3net +4
Permits issued per year
20002025 (part year)
Most common work
Structures worked on
Where this street runs
Rockcliffe-Smythe 62 permits
St Lawrence-East Bayfront-The Islands 42 permits
Most recent permits
| Issued | Work | What was filed | Value | Status |
|---|---|---|---|---|
| Nov 24, 2025 | Building Permit Related(MS) | HVAC - Proposed 2nd and 3rd floor addition, interior alterations, and conversion to duplex. More than 50% of the ground floor walls are being removed due to structural deficiencies. | — | Open |
| Nov 20, 2025 | Demolition | Proposed demolition as more than 50% of the ground floor walls are being removed due to structural deficiencies. | — | Demolition |
| Nov 20, 2025 | Building Permit Related (DR) | Drain - Proposed 2nd and third floor addition, interior alterations, and conversion to duplex. More than 50% of the ground floor walls are being removed due to structural deficiencies. | — | Open |
| Nov 20, 2025 | Building Permit Related(PS) | Plumbing - Proposed 2nd and third floor addition, interior alterations, and conversion to duplex. More than 50% of the ground floor walls are being removed due to structural deficiencies. | — | Open |
| Nov 20, 2025 | New Building - By Renovation | Proposed 2nd and 3rd floor addition, interior alterations, and conversion to duplex. More than 50% of the ground floor walls are being removed due to structural deficiencies. | $650K | New build |
| Mar 24, 2025 | Building Permit Related(MS) | Rev. 01 - PROPOSED REVISIONS TO ISSUED PERMIT #24 175725 HVA TO MAKE INTERIOR ALTERATION AND ADD A THIRD FLOOR | — | Open |
| Dec 24, 2024 | Multiple Projects | REV 01: PROPOSED REVISIONS TO ISSUED PERMIT #24 175725 BLD TO MAKE INTERIOR ALTERATION AND ADD A THIRD FLOORProposed second floor addition and interior alteration to convert the existing single family detached house to a duplex | — | Open |
| Aug 27, 2024 | Building Permit Related(PS) | Plumbing - Proposed second floor addition and interior alteration to convert the existing single family detached house to a duplex | — | Open |
| Aug 27, 2024 | Building Permit Related (DR) | Drain - Proposed second floor addition and interior alteration to convert the existing single family detached house to a duplex | — | Open |
| Jun 19, 2024 | Building Permit Related (DR) | Drain - Proposed underpinning and side foundation wall | — | Open |
| Jun 18, 2024 | Building Permit Related(PS) | Plumbing - Proposed underpinning and side foundation wall | — | Open |
| Jun 11, 2024 | Underpinning | Proposed underpinning and side foundation wall | $85K | Open |
| May 5, 2024 | Building Permit Related (DR) | Drain - Proposed underpinning and side foundation wall | — | Closed |
| May 5, 2024 | Underpinning | Proposed underpinning and side foundation wall | $85K | Closed |
| May 3, 2022 | Multiple Projects | Revision 01: add deck at the front of the second storey above the porch. | — | Open |
| Mar 23, 2022 | Building Permit Related(MS) | HVAC - Construct a new two storey laneway suite in the rear yard of an existing one storey detached single family dwelling. | — | Open |
| Mar 23, 2022 | Building Permit Related (DR) | Drain - Construct a new two storey laneway suite in the rear yard of an existing one storey detached single family dwelling. | — | Open |
| Mar 23, 2022 | Building Permit Related(PS) | Plumbing - Construct a new two storey laneway suite in the rear yard of an existing one storey detached single family dwelling. | — | Open |
| Mar 23, 2022 | New Laneway / Rear Yard Suite | Construct a new two storey laneway suite in the rear yard of an existing one storey detached single family dwelling. | $250K | Open |
| Jun 8, 2021 | Building Permit Related(PS) | Plumbing - Proposal for interior alterations and new deck on the second storey. | — | Open |
| Mar 9, 2021 | Pool Fence Enclosure | Pool fence enclosure | $1K | Closed |
| Sep 11, 2020 | Building Permit Related(MS) | HVAC - To replace existing house with new 2 storey detached house. | — | Open |
| Jul 10, 2020 | Back Water Valve (Sewer only) | Back Water Valve (Sewer only) | — | Closed |
| Feb 26, 2020 | New Building | Revision 02 - Proposed changes to interior floor layout and stair layoutTo replace existing house with new 2 storey detached house. | — | New build |
| Jan 9, 2019 | Multiple Projects | Proposal to construct a 2nd floor rear addition to existing sfd-detached. Scope also includes a 2nd floor deck.Also for small accessory building in the rear yard, and to legalize as-built side yard setback of previously approved side addition. - TS | $200K | Closed |
| Jan 9, 2019 | Building Permit Related(PS) | Plumbing - Proposal to construct a 2nd floor rear addition to existing sfd-detached. Scope also includes a 2nd floor deck. | — | Closed |
| Jan 9, 2019 | Building Permit Related(MS) | HVAC - Proposal to construct a 2nd floor rear addition to existing sfd-detached. Scope also includes a 2nd floor deck. | — | Closed |
| Oct 10, 2018 | Building Permit Related(MS) | HVAC - Proposal for a side addition | — | Closed |
| Sep 28, 2018 | Demolition | To demolish the existing 1 storey single family dwelling. | — | Demolition |
| Sep 28, 2018 | Building Permit Related (DR) | Drain - To replace existing house with new 2 storey detached house. | — | Open |
| Sep 28, 2018 | Building Permit Related(PS) | Plumbing - To replace existing house with new 2 storey detached house. | — | Open |
| Aug 16, 2018 | Building Permit Related (DR) | Drain - Proposal to underpin and finish basement, interior alterations to ground floor, new front and rear deck. | — | Closed |
| Aug 16, 2018 | Multiple Projects | Proposal to underpin and finish basement, interior alterations to ground floor, new front and rear deck. | $150K | Closed |
| Aug 16, 2018 | Building Permit Related(PS) | Plumbing - Proposal to underpin and finish basement, interior alterations to ground floor, new front and rear deck. | — | Closed |
| Jan 12, 2018 | Addition(s) | Revision for rear 2nd storey addition.Proposal for a side addition | — | Closed |
| Dec 19, 2017 | Building Permit Related(PS) | Plumbing - Revision for rear 2nd storey addition.Plumbing - Proposal for a side addition | — | Closed |
| Sep 26, 2017 | Garage | Proposal to construct a detached garage in the rear yard of the existing single family dwelling. | $8K | Open |
| Aug 30, 2017 | Multiple Projects | Rev 2 - Proposal to revise basement walkout for additional underpinning. Proposal one storey rear addition and a second floor addition, interior alteration and new second unit | — | Closed |
| Feb 3, 2017 | Building Permit Related(MS) | HVAC - Proposal one storey rear addition and a second floor addition, interior alteration and new second unit | — | Closed |
| Jan 17, 2017 | Building Permit Related (DR) | Drain - Proposal one storey rear addition and a second floor addition, interior alteration and new second unit | — | Closed |
The 40 most recent of 104 permits on record. Figures come from the City’s active and cleared permit datasets, refreshed daily — what that covers, and what it misses.