Telus Office Tower - 25 York St., Toronto

Completion: November 01, 2009

Location: Toronto

Total Construction Value: $250,000,000

Size: 780,000 sq. ft.

This was a design-assist office tower in the heart of downtown Toronto. The 30-story tower consists of 3 levels of underground parking, and 780,000 square feet of ‘AAA’ office space. It is connected to Toronto's PATH system that includes retail, direct access to the Air Canada Centre and the Southcore Financial Centre. Floors 3-5 include a communal wellness, entertainment and an innovation centre. The Innovation centre meeting room has windows that frost on demand for extra privacy. Telus occupies 60% of the space including the two-storey podium. 

Mechanical Systems

The buildings air distribution and cooling is done entirely by a raised floor system  within  the  office spaces. Heating of the occupied spaces was  achieved  by  perimeter  wallfin radiation. The HVAC system consists of a separate  low- rise  and  high-rise  system which are highlighted by two major mechanical rooms, one in the below grade parking and one at the penthouse level to accommodate building height. The HVAC piping was split into two zones to prevent excessive pressure. This highly efficient mechanical design helped the project achieve LEED Gold certification.  The ‘AAA’ office space was one of the first LEED certified spaces in Toronto to achieve LEED Gold accreditation. Material and equipment handling strategies were paramount in the downtown postage stamp property. Drainage was installed for the multiple green roofs and the rainwater is collected and stored in a 29,000 gallon cistern to be re-used for greywater throughout the building. Low-flow and dual flow toilets were installed, along with perimeter hydronic finned heating, and the heating and cooling is primarily though district energy systems and heat exchangers.

Project Highlights

LEED Gold Certification Sept. 2011