Toronto address · Ward 3, Etobicoke-Lakeshore

411-435 Horner Ave

The City of Toronto has 23 building permits since 2017 (20 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.

Designated structure · Sign building permit related
1overhanging sign
Applied Oct 1, 2024 · issued Oct 9, 2024 · completed Feb 9, 2026 · Permit 24 220539 DST
Cancelled
Addition or alteration · Multiple projects
Proposed interior build-out of modules 3 and 4, interior alterations to reception area, roof structure alterations and install (1) exterior manhole to existing office/data communications centre *Cogeco*. Also refer to application #10-294536.
Applied Apr 13, 2011 · issued May 17, 2011 · Permit 11 173867 BLD
Permit issued
Heating and ventilation
HVAC - Proposed interior build-out of modules 3 and 4, interior alterations to reception area, roof structure alterations and install (1) exterior manhole to existing office/data communications centre *Cogeco*. Also refer to application #10-294536.
Applied Apr 13, 2011 · issued May 17, 2011 · Permit 11 173867 HVA
Inspections under way
Plumbing
Plumbing - Proposed interior build-out of modules 3 and 4, interior alterations to reception area, roof structure alterations and install (1) exterior manhole to existing office/data communications centre *Cogeco*. Also refer to application #10-294536.
Applied Apr 13, 2011 · issued May 17, 2011 · Permit 11 173867 PLB
Inspections under way
Plumbing
Plumbing - Interior alterations to existing office/data communications centre *Cogeco*. Interior demolitions and interior alterations to unused portion of modules 3 and 4 to create data centre, and to south west corner of building to relocate office space. Includes partitions, doors, temporary stairs, minor floor work and infill of windows in south west exterior walls. Fixtures and floor drains for housekeeping closet and mechanical room
Applied Nov 10, 2010 · issued Jan 26, 2011 · Permit 10 294536 PLB
Inspections under way
Heating and ventilation
HVAC - Interior alterations to existing office/data communications centre *Cogeco*. Interior demolitions and interior alterations to unused portion of modules 3 and 4 to create data centre, and to south west corner of building to relocate office space. Includes partitions, doors, temporary stairs, minor floor work and infill of windows in south west exterior walls. Reroute ductwork.
Applied Nov 10, 2010 · issued Jan 26, 2011 · Permit 10 294536 HVA
Inspections under way
Addition or alteration · Multiple projects
Interior alterations to existing office/data communications centre *Cogeco*. Interior demolitions and interior alterations to unused portion of modules 3 and 4 to create data centre, and to south west corner of building to relocate office space. Includes partitions, doors, temporary stairs, minor floor work and infill of windows in south west exterior walls.
Applied Nov 10, 2010 · issued Jan 26, 2011 · Permit 10 294536 BLD
Inspections under way
Plumbing
Plumbing - Interior alterations to module 2. Raise floor, relocate ramp and open corridor at grid 5-B. New 1/2" condensate drains for (2) CRAC units - through south partition to new floor drain in hallway *Cogeco*
Applied Jul 29, 2010 · issued Aug 6, 2010 · Permit 10 171600 PLB
Inspections under way
Heating and ventilation
HVAC - Interior alterations to module 2. Raise floor, relocate ramp and open corridor at grid 5-B. Extension into modular 2 space for air distribution
Applied May 7, 2010 · issued Jul 13, 2010 · Permit 10 171600 HVA
Inspections under way
Addition or alteration · Interior alterations
Interior alterations to module 2. Raise floor, relocate ramp and open corridor at grid 5-B
Applied May 7, 2010 · issued Jul 13, 2010 · Permit 10 171600 BLD
Inspections under way
Heating and ventilation
HVAC - Interior alterations to an existing industrial office/warehouse building fo a new Cogeco Data Servises.The office component is increased to approximately 75% of building area, the rest of the building is to remain as warehouse.
Applied Feb 13, 2009 · issued Mar 16, 2009 · Permit 09 109516 HVA
Inspections under way
Addition or alteration · Interior alterations
Interior alterations to an existing industrial office/warehouse building
Applied Feb 13, 2009 · issued Mar 16, 2009 · Permit 09 109516 BLD
Inspections under way

Show 11 more permits

Plumbing
Plumbing - Interior alterations to an existing industrial office/warehouse building fo a new Cogeco Data Servises.The office component is increased to approximately 75% of building area, the rest of the building is to remain as warehouse.
Applied Feb 13, 2009 · issued Mar 16, 2009 · completed Aug 24, 2026 · Permit 09 109516 PLB
Closed
Heating and ventilation
HVAC revision re; Location of an intake duct. (HVAC - Conversion of an existing warehouse space into general and mechanical service space - interior alterations, also construction of precast concrete fence enclosure to Toronto Hydro Telecom Data Centre.)
Applied Oct 17, 2008 · issued Nov 18, 2008 · Permit 08 122139 HVA (revision 01)
Revision issued
Addition or alteration · Interior alterations
**REVISION: To replace approved doors with roll-up doors** Conversion of an existing warehouse space into general and mechanical service space - interior alterations, also construction of precast concrete fence enclosure to Toronto Hydro Telecom Data Centre.
Applied Oct 9, 2008 · issued Oct 21, 2008 · Permit 08 122139 BLD (revision 01)
Revision issued
Addition or alteration · Interior alterations
Conversion of an existing warehouse space into general and mechanical service space - interior alterations, also construction of precast concrete fence enclosure to Toronto Hydro Telecom Data Centre.
Applied Mar 27, 2008 · issued Oct 8, 2008 · Permit 08 122139 BLD
Inspections under way
Heating and ventilation
HVAC - Conversion of an existing warehouse space into general and mechanical service space - interior alterations, also construction of precast concrete fence enclosure to Toronto Hydro Telecom Data Centre.
Applied Mar 27, 2008 · issued Oct 8, 2008 · Permit 08 122139 HVA
Inspections under way
Plumbing
Plumbing - *Toronto Hydro Telecom* Interior alterations to creat new data centre space and temporary office space within existing warehouse/date centre space. Remedial work to walls and floors of existing enclosed mezzanine. Raised flooring. Sprinklers
Applied Dec 11, 2007 · issued Mar 25, 2008 · completed Jun 8, 2026 · Permit 07 285314 PLB
Closed (dormant)
Heating and ventilation
HVAC - *Toronto Hydro Telecom* Interior alterations to creat new data centre space and temporary office space within existing warehouse/date centre space. Remedial work to walls and floors of existing enclosed mezzanine. Raised flooring. Sprinklers
Applied Dec 11, 2007 · issued Mar 25, 2008 · Permit 07 285314 HVA
Inspections under way
Heating and ventilation
*REVISION : LAYOUT CHANGE AS PER CLOUDED AREA**HVAC - Create data centre for *Toronto Hydro Telecom* Previous space warehouse/display for trade shows. New stairs and ramp to accomodate proposed new raised floor. New opening and vapour barrier in south exterior wall. New suspended ceiling. Sprinklers. Fire alarm.
Applied Jun 27, 2007 · issued Sep 17, 2007 · Permit 07 109487 HVA (revision 01)
Revision issued
Addition or alteration · Interior alterations
*REVISION : LAYOUT CHANGE AS PER CLOUDED AREA**Create data centre for *Toronto Hydro Telecom* Previous space warehouse/display for trade shows. New stairs and ramp to accomodate proposed new raised floor. New opening and vapour barrier in south exterior wall. New suspended ceiling. Sprinklers. Fire alarm. Maglocks
Applied Jun 27, 2007 · issued Nov 7, 2007 · Permit 07 109487 BLD (revision 01)
Revision issued
Heating and ventilation
HVAC - Create data centre for *Toronto Hydro Telecom* Previous space warehouse/display for trade shows. New stairs and ramp to accomodate proposed new raised floor. New opening and vapour barrier in south exterior wall. New suspended ceiling. Sprinklers. Fire alarm.
Applied Feb 16, 2007 · issued Jun 4, 2007 · Permit 07 109487 HVA
Inspections under way
Addition or alteration · Interior alterations
Create data centre for *Toronto Hydro Telecom* Previous space warehouse/display for trade shows. New stairs and ramp to accomodate proposed new raised floor. New opening and vapour barrier in south exterior wall. New suspended ceiling. Sprinklers. Fire alarm.
Applied Feb 15, 2007 · issued May 23, 2007 · Permit 07 109487 BLD
Inspections under way

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

155 Aldercrest Rd · Consent
210 m away · filed Sep 2, 2026 · Accepted
154 Delta St · Minor variance
To construct a new semi-detached dwelling with an attached garage.
180 m away · filed Oct 16, 2023 · Approved
154 Delta St · Consent
To obtain consent to sever the property into two undersized lots.
180 m away · filed Oct 16, 2023 · Approved
154 Delta St · Minor variance
To construct a new semi-detached dwelling with an attached garage.
180 m away · filed Oct 16, 2023 · Approved
155 Aldercrest Rd · Minor variance
To construct a new detached dwelling with an attached garage.
210 m away · filed Nov 26, 2021 · Approved
155 Aldercrest Rd · Consent
To obtain consent to sever the property into two undersized residential lots.
210 m away · filed Nov 26, 2021 · Approved
155 Aldercrest Rd · Minor variance
To construct a new detached dwelling with an attached garage.
210 m away · filed Nov 26, 2021 · Approved
169 Beta St · Minor variance
To construct a new detached dwelling with an attached garage.
250 m away · filed Jul 22, 2020 · Approved

Everything planned in Etobicoke-Lakeshore

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.