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British High Commission

Ottawa, Ontario
HOK-designed British High Commission exterior of full-length windows and vertical fins to reduce solar heat gain.
HOK-designed British High Commission exterior with a building overhang serving as a canopy under the pedestrian pathway.
HOK-designed British High Commission exterior with a building overhang serving as a canopy under the pedestrian pathway.
HOK-designed British High Commission exterior at dusk, surrounded by trees and woodlands next to the National Capital Commission parkland.
HOK-designed British High Commission exterior showing the building entryway at dusk with full length windows into the building.
HOK-designed British High Commission exterior at dusk, showing full-length windows and vertical fins to reduce solar heat gain.
Stairwell with integrated wooden seating for collaboration inside the HOK-designed British High Commission in Ottawa.

The new British High Commission consolidates the United Kingdom’s diplomatic presence in Canada and reinforces the longstanding partnership between the two countries. The building brings together the offices of the High Commissioner and Deputy High Commissioner with Consular, Immigration and Defence departments in a modern, secure and sustainable workplace. Perched on a cliff above the Ottawa River and next to the historic Earnscliffe estate, home of Canada’s first prime minister, the facility integrates thoughtfully into its historic and civic setting. 

Design Solutions

HOK’s design draws inspiration from the site. Built along the sloping landscape, the British High Commission’s entrance aligns with Earnscliffe’s front door, establishing a visual connection while maintaining a lower profile beside the historic Canadian manor. A limestone base, commonly sourced in Ontario, grounds the building and connects it to the region’s architectural character. 

From the lobby, clear views of the surrounding landscape highlight Ottawa’s natural beauty. Upper floors of the building sit closer to Sussex Drive, a prominent corridor that includes Canada’s Parliamentary Precinct, national institutions and embassies. 

The building’s interior supports collaboration, choice and employee well-being through focused work areas, open offices, meeting rooms, collaboration zones and a flexible multi-purpose space connected to an outdoor terrace. Stone columns, wood accents, marble surfaces and expressive lighting create a contemporary and refined atmosphere. A central stair with integrated seating encourages movement and informal interaction throughout the day. 

The design prioritizes openness and inclusion. Floor-to-ceiling windows and interior glass walls draw daylight deep into the three-story building and frame views of the surrounding forest, Ottawa River and Quebec shoreline. Gender-neutral restrooms, biophilic workspaces and curated artwork reflect the UK’s diversity and innovation. 

The building achieved LEED Gold certification and features passive design strategies, high-performance insulation and abundant natural light. Cantilevered volumes and vertical fins reduce solar gain, while mature trees provide natural shading and support ecological resilience. Native plantings and minimal hardscaping preserve the character of the Earnscliffe grounds. The project also updated the adjacent National Capital Commission parkland, expanding a nearby woodland, reinstating a public pathway and adding native plantings.  

Impact

The British High Commission serves as a symbol of shared values and a future-ready platform for collaboration, diplomacy and dialogue between Canada and the United Kingdom. 

SIZE
35,350 sq. ft. / 3,285 sq. m.
CERTIFICATION
LEED Gold
KEY FEATURES
Home of the UK’s High Commissioner and Deputy High Commissioner, as well as Consular, Immigration and Defence departments
Architectural connection to Earnscliffe manor and Canada’s Parliamentary Precinct
Focused work areas, open offices, meeting rooms, collaboration zones and a flexible multi-purpose space
High-performance insulation, cantilevered volumes and vertical fins on the building’s exterior to improve energy efficiency and reduce solar heat gain
Outdoor terrace with views of the surrounding forest and Ottawa River
Updates to the adjacent National Capital Commission parkland
Awards
Green GOOD DESIGN Award, 2026
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