Sir Leonard Tilley Building

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Sir Leonard Tilley Building
Tilley Building.JPG
General information
TypeCanadian government office
LocationOttawa, Ontario, Canada
Address719 Heron Road
Coordinates45°22′42″N 75°41′14″W / 45.37847°N 75.687223°W / 45.37847; -75.687223
ClientCanadian government
OwnerPublic Works and Government Services Canada
Technical details
Floor area23,832 m2 (256,530 sq ft)

The Sir Leonard Tilley Building and Annex[1] is a Government of Canada office building property consisting of two buildings and operated by the Public Works and Government Services Canada and located at 719 Heron Road in Ottawa, Ontario, Canada. It was designed by Bemi & Associates Architects. The floor space covers 23,832 square metres and the land area covers 4.527 hectares. Until 2015, the building housed the headquarters of the Communications Security Establishment (CSE). This building was named in honour of Samuel Leonard Tilley, federal Finance Minister in 1873-1878.

The completion of a new headquarters building on Ogilvie Road has led the CSE to vacate the building. Public Works Canada is preparing the buildings to allow other government departments to take their place. The Department of National Defence determined the facilities did not meet their needs but Corrections Canada, the Canada Revenue Agency and the Canada Border Services Agency were indicated as possible future tenants. The entry of new tenants is planned to be phased in over 2018-9. The cost of refurbishing the buildings to meet new standards, or Workplace 2.0, will cost about $400 million.[2]


  1. ^ Clyde H. Farnsworth (December 28, 1995). "Canadian Agency Is Accused of Spying on Citizens and Allies". New York Times. Retrieved December 26, 2018.
  2. ^ Pugliese, David (1 July 2015). "Federal departments jockey to take over former e-spy headquarters". The Ottawa Citizen. Postmedia. Retrieved 31 August 2015.

Coordinates: 45°22′42″N 75°41′14″W / 45.37847°N 75.687223°W / 45.37847; -75.687223

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