Winnipeg Architecture Foundation



The Security Company

Formerly:National Trust Building
Address:250 Portage Avenue
Original Use:Banking hall and offices
Other Work:1967, 1974, 1977, 1989, 1992, Renovations
Architects:Green Blankstein Russell
Contractors:Arlington Builders Limited

More Information

Designed by Green Blankstein and Russell, 250 Portage Avenue was constructed in 1965. Originally programmed as a bank, the structure is now in use by a variety of retail tenants.

Design Characteristics

  • Plan area: 7,237 square feet (672.32 square metres)
  • Gross floor area: 20,419 square feet (1,896.93 square metres)
  • The two storey building was constructed using a structure of reinforced concrete
  • Notable modern elements include the use of black granite, white Canadian marble and the use of structural steel and reinforced concrete to allow for the expansive facade of glass curtain walls
  • This modern design and unique combination of materials creates the effect of the striking white marble roof and columns floating above the glass walls of the structure
  • New signage has compromised the original aesthetic


  • "National Trust's New Building Under Construction." Manitoba Business Journal 1 4 (Febraury/March 1965): 58.
  • "National Trust Opens Spanking New Office Building on 65th Anniversary." Manitoba Business Journal 2 5 (April/May 1966): 35.
  • "New owner to renovate National Trust Building." Winnipeg Free Press. 8 December 1988. 70.

Locations of Supporting Information

  • City of Winnipeg Archives
  • University of Manitoba Libraries, Department of Archives and Special Collections

Links & Related Buildings