Toronto address · Ward 16, Don Valley East
770 Don Mills Rd
Ontario Science Centre
The City of Toronto has 64 building permits since 2017 (35 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.
- Application received
Alternative solution
Proposal for alternative solution for extended travel distance for rooftop service areas
Applied Sep 10, 2026 · Permit 26 235449 ALT
- Examiner's notice sent
New building
Proposal for the construction of three mock-ups installations and a tent, for key public facing components of the Ontario Line station buildings that will inform system-wide procurement decisions. Mock-up one will be an entry portal and station ambassadors office, mock-up two will be a station platform and mockup three a typical stair. The three mock-up installations will be protected from weather conditions by a tent. The tent will be installed at a later stage after foundations and structural works are completed. As per discussions with the City, part permit for foundations and structural s…
Applied Aug 19, 2026 · Permit 26 222240 BLD
- Examiner's notice sent
New building
Proposal for temporary site office to accommodate TGP staff working on theconstruction of the Ontario Line's Flemingdon Park Station (NFS).
Applied Jul 13, 2026 · Permit 26 200916 BLD
- Examiner's notice sent
Drains and site services · Site service
The proposed Site Services Permit is for temporary water connections for construction activities at Flemingdon Park Station,
Applied Jul 6, 2026 · Permit 26 196873 STS
- Application on hold
Fire and security upgrade
FS - Sprinkler Shop Drawing - The proposed Flemingdon Park Station is located approximately 0.6 km south of the proposed Science Centre station. It isconstrained by Don Mills Road to the east and by a private road to the south which provides access to several businesses and theET Seton Park. Public access to the building will be provided at ground level and the station building will be built to overtop a smallportion of the Science Centre¿s South Parking Lot.
Applied Jul 2, 2026 · Permit 25 119556 FSU
- Under review
Alternative solution
Proposal for alternative solution to code compliance for stations related to the application of emergency power.
Applied Apr 2, 2026 · Permit 26 138176 ALT
- Inspections under way
Demolition
The work consists of localized demolition and removal of specific sections of the retaining wall located within the property limits of 770 Don Mills Rd, and not in the right-of-way (ROW), The sections of the wall are being removed due to the current alignment conflicting with the guideway Piers D-25 and D-26, to enable construction of these piers. Scope also includes demolition of the wall, implementation of dust control measures, and hauling/disposal of all demolition debris. Following demolition, the area will be gradedand prepared to meet the requirements for upcoming foundation and struct…
Applied Mar 30, 2026 · issued Apr 22, 2026 · 1 home removed · Permit 26 136398 DEM
- Response received
Drains and site services · Site service
REV : Relocation of wet utilities in conflict with guide way piers and station footprint at 770 Don Mills Road. The work involves removal, supply, and installation of sewer system, stormwater, watermains and all associated appurtenances. There is no change to current scope of work request to only include updated drawings to the approved Site Services Permit25 230459 STS 00 DRProposal for relocation of wet utilities in conflict with guide way piers and station footprint at 770 Don Mills Road. The work involves removal, supply, and installation of sewer system, water mains and all associated ap…
Applied Jan 13, 2026 · Permit 25 230459 STS (revision 01)
- Under review
Partial permit · Partial permit - foundation
Part Permit - The proposed Flemingdon Park Station is located approximately 0.6 km south of the proposed Science Centre station. It isconstrained by Don Mills Road to the east and by a private road to the south which provides access to several businesses and theET Seton Park. Public access to the building will be provided at ground level and the station building will be built to overtop a smallportion of the Science Centre¿s South Parking Lot.
Applied Dec 16, 2025 · Permit 25 119556 FND
- Inspections under way
Temporary structure · Other temporary tents
Proposl for a tent to cover slurry storage tanks at 770 Don Mills Road (NFS). The tent is crucial in protecting Ontario Line construction over the winter months. Tent will be approx 64ft x 88ft (5632sqf / 523sqm) and 342inch (8.68m) high at its tallest point. The tent will be in place January 1, 2026 to June 1, 2026.
Applied Dec 5, 2025 · issued Jan 7, 2026 · Permit 25 263019 TPS
- Deficiency notice issued
Alternative solution
It is proposed to provide an alternative solution approach to code compliance for stations related to the application of spatial separation for exterior walls of the station of prescriptions of OBC Subsection 3.2.3.
Applied Oct 2, 2025 · Permit 25 233965 ALT
- Inspections under way
Drains and site services · Site service
Proposal for relocation of wet utilities in conflict with guide way piers and station footprint at 770 Don Mills Road. The work involves removal, supply, and installation of sewer system, water mains and all associated appurtenances.
Applied Sep 25, 2025 · issued Nov 13, 2025 · Permit 25 230459 STS
Show 52 more permits
- Permit issued
Drains and site services
Drain - The proposed Flemingdon Park Station is located approximately 0.6 km south of the proposed Science Centre station. It isconstrained by Don Mills Road to the east and by a private road to the south which provides access to several businesses and theET Seton Park. Public access to the building will be provided at ground level and the station building will be built to overtop a smallportion of the Science Centre¿s South Parking Lot.
Applied Feb 20, 2025 · issued Apr 21, 2026 · Permit 25 119556 DRN
- Issuance pending
Heating and ventilation
HVAC - The proposed Flemingdon Park Station is located approximately 0.6 km south of the proposed Science Centre station. It isconstrained by Don Mills Road to the east and by a private road to the south which provides access to several businesses and theET Seton Park. Public access to the building will be provided at ground level and the station building will be built to overtop a smallportion of the Science Centre¿s South Parking Lot.
Applied Feb 20, 2025 · Permit 25 119556 HVA
- Issuance pending
Plumbing
Plumbing - The proposed Flemingdon Park Station is located approximately 0.6 km south of the proposed Science Centre station. It isconstrained by Don Mills Road to the east and by a private road to the south which provides access to several businesses and theET Seton Park. Public access to the building will be provided at ground level and the station building will be built to overtop a smallportion of the Science Centre¿s South Parking Lot.
Applied Feb 20, 2025 · Permit 25 119556 PLB
- Response received
New building
The proposed Flemingdon Park Station is located approximately 0.6 km south of the proposed Science Centre station. It isconstrained by Don Mills Road to the east and by a private road to the south which provides access to several businesses and theET Seton Park. Public access to the building will be provided at ground level and the station building will be built to overtop a smallportion of the Science Centre¿s South Parking Lot.
Applied Feb 20, 2025 · Permit 25 119556 BLD
- Examiner's notice sent
Drains and site services · Site service
Drain - The proposed Flemingdon Park Station is located approximately 0.6 km south of the proposed Science Centre station. It isconstrained by Don Mills Road to the east and by a private road to the south which provides access to several businesses and theET Seton Park. Public access to the building will be provided at ground level and the station building will be built to overtop a smallportion of the Science Centre¿s South Parking Lot.
Applied Feb 20, 2025 · Permit 25 119556 STS
- Closed
Addition or alteration · Interior alterations
Proposal to replace 4 hollow metal exit doors, 1 single and 3 double doors.
Applied May 16, 2024 · issued Sep 3, 2024 · completed Jan 29, 2026 · Permit 24 149537 BLD
- Cancelled
Addition or alteration · Re-Roofing/Re-Cladding
Proposal for sectional roof and roof deck replacement with new steel deck and new roofing membrane
Applied May 8, 2024 · completed Feb 25, 2026 · Permit 24 145838 BLD
- Cancelled
Addition or alteration · Re-Roofing/Re-Cladding
Sectional roof and roof deck replacement with new steel deck and new roofing membrane
Applied Mar 27, 2024 · completed May 1, 2024 · Permit 24 130095 BLD
- Revision issued
Fire and security upgrade · Other
REV01: Proposed revision to revise routing of exhaust duct as shown on drawings.Upgrading the existing kitchen fire suppression system and equipment for the existing commercial kitchen to meet the applicable codes (NFPA 96, OBC) - Ontario Science Centre
Applied Feb 23, 2024 · issued Mar 25, 2024 · Permit 23 192741 FSU (revision 01)
- Inspections under way
Fire and security upgrade · Other
Upgrading the existing kitchen fire suppression system and equipment for the existing commercial kitchen to meet the applicable codes (NFPA 96, OBC) - Ontario Science Centre
Applied Aug 23, 2023 · issued Oct 5, 2023 · Permit 23 192741 FSU
- Permit issued
Addition or alteration · Other
Proposal for exterior repairs to correct slope along Building A, localized repair of suspended concrete slab, localized asphalt replacement on the south side of of the building and localized concrete repair of concrete vent shaft wall - "Ontario Science Centre"
Applied Jun 27, 2023 · issued Nov 21, 2023 · Permit 23 166775 BLD
- Closed
Plumbing · Backflow prevention devices (Water only)
Proposal to remove 8" backflow preventer and replace with new similar type 8" backflow preventer
Applied Jan 6, 2022 · issued Feb 23, 2022 · completed Jun 3, 2026 · Permit 22 101086 PSA
- Inspections under way
Addition or alteration · Interior alterations
Proposal for interior alterations to the transformer room to split in two by a new fire rated wall with fire shutter and door and electrical adjustments related in the existing Assembly Building "Ontario Science Centre".
Applied Jan 13, 2021 · issued Feb 17, 2021 · Permit 21 104014 BLD
- Cancelled
Heating and ventilation
HVAC - Proposal for interior alterations for an office call centre to be located within the existing museum (Ontario Science Centre)
Applied Apr 16, 2020 · issued May 25, 2020 · completed Nov 26, 2020 · Permit 20 134191 HVA
- Cancelled
Addition or alteration · Interior alterations
Proposal for interior alterations for an office call centre to be located within the existing museum (Ontario Science Centre)
Applied Apr 16, 2020 · issued May 4, 2020 · completed Nov 26, 2020 · Permit 20 134191 BLD
- Closed
Temporary structure · Certified tents
Erect 1 30ft by 60ft Archtop frame temporary tent - Archtop frame tent (Cert #14 251040) anchored with concrete blocks.- Installed May 24th to 27th 2019 for the Walk of Life for Cardiac Health Charity Event
Applied Apr 24, 2019 · issued May 3, 2019 · completed May 26, 2020 · Permit 19 144292 TPS
- Closed
Designated structure · Sign building permit related
To erect and display one electronic ground sign displaying static copy, electronic moving copy and readograph copy (changed electronically) on the easterly property frontage. The total sign face area is to measure 4.88 metres by 7.36 metres, and is to have a height of 10.41 metres. Note that this is a modification to an existing sign already on the premises. **ONTARIO SCIENCE CENTRE**
Applied Apr 18, 2019 · issued May 28, 2019 · completed Dec 20, 2019 · Permit 19 140367 DST
- Closed
Plumbing
Plumbing - Proposal to replace non functional stair lift with new and non functional scissor lift with new mechanical dock load leveller assembly in existing exhibition hall "Science Centre"
Applied Jun 25, 2018 · issued Jul 26, 2018 · completed Jan 31, 2019 · Permit 18 184051 PLB
- Closed
Addition or alteration · Other
Proposal to replace non functional stair lift with new and non functional scissor lift with new mechanical dock load leveller assembly in existing exhibition hall "Science Centre"
Applied Jun 25, 2018 · issued Jul 26, 2018 · completed Apr 29, 2019 · Permit 18 184051 BLD
- Closed
Heating and ventilation · Special ventilation system
replace 2 rooftop units for existing restaurant
Applied Jun 19, 2018 · issued Jul 31, 2018 · completed Dec 13, 2018 · Permit 18 180641 MSA
- Closed
Temporary structure · Certified tents
Proposal to install 30ft x 60ft Archtop frame tent (Cert #14-251040) to be installed on May 25th and removed on May 28th - "Walk of Life Charity Event"
Applied May 22, 2018 · issued Jun 14, 2018 · completed Mar 1, 2019 · Permit 18 162537 TPS
- Inspections under way
Addition or alteration · Multiple projects
Interior alterations. Work to lighting, power and communication outlets
Applied May 15, 2018 · issued Jun 4, 2018 · Permit 18 158910 BLD
- Closed
Addition or alteration · Other
Installation of two new pre-fabricated bicycle shleters on concrete slabs on grade. One adjacent to north parking lot bldg a and one by the staff parking lot bldg c
Applied Apr 5, 2018 · issued Jun 7, 2018 · completed Mar 13, 2019 · Permit 18 139126 BLD
- Closed
Heating and ventilation · Other
Proposal to replace 27 existing humidifiers with new electric/gas humidifiers, replace 51 existing unit heaters, replace 2 existing heat exchangers and upgrade the gas metre to accomodate new gas load.
Applied Aug 21, 2017 · issued Sep 20, 2017 · completed Aug 30, 2019 · Permit 17 219951 MSA
- Closed
Temporary structure · Certified tents
Proposal to install 1 30 ft x 120ft Archtop frame tent (Cert#14-251040) to be installed May 25th and dismantled May 29th 2017 - "Science Rendezvous Event"
Applied Apr 24, 2017 · issued May 26, 2017 · completed Apr 3, 2018 · Permit 17 148404 TPS
- Cancelled
Temporary structure · Certified tents
Proposal to install 1 temporary certified tent (#14-206102) for a charity fundraiser on the ground of the Ontario Science center from May 26, 2016 to May 31, 2016 - Cardiac Health Foundation
Applied May 2, 2016 · completed Mar 2, 2026 · Permit 16 148643 TPS
- Revision issued
Heating and ventilation
Revision to stairwell C-4 for Ontario Science Centre
Applied Mar 24, 2014 · issued Apr 22, 2014 · Permit 13 210019 HVA (revision 01)
- Revision issued
Addition or alteration · Interior alterations
Revision to stairwell C-4 for Ontario Science Centre
Applied Mar 24, 2014 · issued Apr 16, 2014 · Permit 13 210019 BLD (revision 01)
- Permit issued
Addition or alteration · Other
Escalator egress portal and three level observation deck between Building B & C - Ontario Science Centre
Applied Nov 4, 2013 · issued Jan 17, 2014 · Permit 13 260804 BLD
- Inspections under way
Addition or alteration · Interior alterations
Alterations to three existing stairwells to provide additional display space on levels 5 and 6
Applied Jul 24, 2013 · issued Aug 30, 2013 · Permit 13 210019 BLD
- Inspections under way
Heating and ventilation
HVAC - Alterations to three existing stairwells to provide additional display space on levels 5 and 6
Applied Jul 24, 2013 · issued Oct 31, 2013 · Permit 13 210019 HVA
- Closed
Temporary structure · Certified tents
Ontario Science Centre 30' x 30' x 8' Certified Tent ( 11- 167905 ) Install 6/23/2013 and Take down 6/23/2013.
Applied Jun 18, 2013 · issued Jun 24, 2013 · completed Apr 3, 2018 · Permit 13 190128 TPS
- Inspections under way
Plumbing · Piping: other buildings
Ontario Science Centre - Replace piping in washrooms
Applied Jul 25, 2011 · issued Jul 27, 2011 · Permit 11 245059 PSA
- Inspections under way
Fire and security upgrade · Multiple projects
Fire alarm upgrade and replacements - Ontario Science Centre, Building A, B, C
Applied Nov 21, 2008 · issued Jan 8, 2009 · Permit 08 223680 FSU
- Closed (dormant)
Heating and ventilation · Other
Ontario Science Centre Building "C"Replace existing RH coils / air ducts.Add new boiler for RH system (gas fired).Modify exsisting AHU.
Applied Aug 6, 2008 · issued Sep 10, 2008 · completed Jun 8, 2026 · Permit 08 190320 MSA
- Closed (dormant)
Plumbing · Other
Ontario Science Centre Building "C"Replace existing RH coils air ducts.Add new boiler for RH system ( Gas Fired ).Modify existing AHU.
Applied Aug 6, 2008 · issued Sep 4, 2008 · completed Jun 8, 2026 · Permit 08 190336 PSA
- Closed (dormant)
Plumbing
Plumbing - Replace elec. DHT to gas fired DHWT. Ontario Science Centre Building "A"
Applied Aug 6, 2008 · issued Sep 22, 2008 · completed Jun 8, 2026 · Permit 08 161184 PLB
- Inspections under way
Addition or alteration · Other
Create roof openings to accomodate HVAC work.
Applied May 22, 2008 · issued Jun 19, 2008 · Permit 08 161184 BLD
- Inspections under way
Addition or alteration · Interior alterations
make interior alterations to 5th floor- south tower, 4th floor- west tower.
Applied May 30, 2007 · issued Jun 29, 2007 · Permit 07 225232 BLD
- Revision issued
Addition or alteration · Interior alterations
Weston family innovation centre - Phase I, interior renovations.
Applied Feb 9, 2006 · issued Feb 13, 2006 · Permit 04 104872 BLD (revision 02)
- Closed (dormant)
Fire and security upgrade · Electromagnetic locks
To install 1 electromagnetic maglock in Building C, Level D at the Ontario Science Centre
Applied May 3, 2005 · issued May 16, 2005 · completed Jun 8, 2026 · Permit 05 128585 FSU
- Permit issued
Addition or alteration · Addition(s)
Addition to Weston Innovation Center - Phase 2
Applied Nov 26, 2004 · issued Sep 28, 2006 · Permit 04 195494 BLD
- Closed (dormant)
Addition or alteration · Interior alterations
make interior alterations. Weston Family Centre- Phase 1B
Applied Sep 29, 2004 · issued Dec 1, 2004 · completed Jun 8, 2026 · Permit 04 177703 BLD
- Closed (dormant)
Addition or alteration · Interior alterations
New computer room
Applied Sep 9, 2004 · issued Oct 7, 2004 · completed Jun 8, 2026 · Permit 04 172737 BLD
- Closed (dormant)
Addition or alteration · Interior demolition
Weston Family Innovation Centre- Phase 1B Intarior demolition at various areas.
Applied Aug 17, 2004 · issued Sep 1, 2004 · completed Jun 8, 2026 · Permit 04 166881 BLD
- Permit issued
Addition or alteration · Interior alterations
Weston family innovation centre - Phase I, interior renovations.
Applied Jun 25, 2004 · issued Jul 23, 2004 · Permit 04 104872 BLD (revision 01)
- Closed (dormant)
Addition or alteration · Interior alterations
Interior alterations to Weston Family Innovation Center. Phase I ,structural construction.
Applied Mar 2, 2004 · issued Mar 18, 2004 · completed Jun 8, 2026 · Permit 04 112885 BLD
- Closed (dormant)
Addition or alteration · Interior alterations
Washroom renovations on south mainfloor of Ontario Science Centre
Applied Feb 6, 2004 · issued Feb 26, 2004 · completed Jun 8, 2026 · Permit 04 107801 BLD
- Closed (dormant)
Addition or alteration · Interior alterations
Interior renovations to exibition hall/museum at Ontario Science Center
Applied Jan 23, 2004 · issued Feb 24, 2004 · completed Jun 8, 2026 · Permit 04 104872 BLD
- Inspections under way
Addition or alteration · Interior alterations
New int alt for kidspark exhibits in building b.
Applied Apr 2, 2003 · issued May 7, 2003 · Permit 03 120499 BLD
- Closed (dormant)
Addition or alteration · Interior alterations
Interior alterations to first and second floor in building a
Applied Oct 31, 2002 · issued Sep 29, 2003 · completed Jun 8, 2026 · Permit 02 185824 BLD
- Closed (dormant)
Addition or alteration · Other
TEMP TENT
Applied Jun 1, 1999 · issued Dec 8, 1999 · completed Jun 8, 2026 · Permit 99 251248 BLD
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
- Submitted
- Under review
10 Grenoble Drive and 7 St Dennis Drive
Not stated in the file
170 m away · Site plan · Under review · filed Mar 22, 2023
- Under review
46 storeys · 1,322 homes · Mixed use
220 m away · Site plan · Under review · filed Mar 7, 2023
- Approved
47 storeys · 8 homes · Residential
280 m away · Rezoning · Approved · filed Mar 1, 2023
- Under review
789-793 Don Mills Road and 10 Ferrand Drive
49 storeys · Residential
290 m away · Site plan · Under review · filed Jul 29, 2022
- Submitted
Neighbours’ Committee of Adjustment files within 250 m
7 St Dennis Dr · Minor variance
To alter the development standards for the multi-tower residential development (as approved under Site-Specific Zoning By-law No. 49-2025) to reduce the number of long-term bicycle parking spaces, modify the loading space requirement, and increase the driveway width.
190 m away · filed Dec 30, 2025 · Approved
7 St Dennis Dr · Consent
To obtain consent to sever the Property into three parcels and to create various easements/rights-of-way. Parcel 1 contains an existing residential building. Parcel 2 will facilitate development of a new building. Parcel 3 will be future park and open space lands.
190 m away · filed May 12, 2025 · 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.