Sir Leonard Tilley Building C-Wing Retrofit

The project will result in the retrofit of SLTB C-Wing to establish new accommodation for the Government Operations Center (GOC). The project scope will also include adding a new lobby outside of the existing building, replacing existing exterior glazing and raising the roof of the top floor to create a higher interior space within the building.

Digging is likely in order to have the lobby sit on concrete piles or foundation wall. Existing landscape will be reinstated after completion of construction. Trees may be removed if within the new lobby footprint. 

The comment period has now ended. 


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Latest update

July 08, 2020 - The assessment decision statement has been issued to the proponent.



Michelle Fairbrother, Environmental Analyst
Telephone: 613-736-3274

  • Location

    • Sir Leonard Tilley Building (Ontario)
  • Nature of Activity

    • Building and Property Development
  • Assessment Status

  • Start Date

  • Proponent

  • Authorities

    • Public Services and Procurement Canada
  • Assessment Type

    Project on federal lands
  • Reference Number


Nearby assessments

..within 200 kilometres
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