AltaGas completed a six-floor transformation of its Calgary headquarters at 701 Fifth Avenue Place, where Zeidler Architecture partnered with Colliers Workplace Strategy to rework the tower’s curved floorplate to support hybrid work, equitable access to daylight, and a more connected workplace culture. Spanning more than 130,000 square feet across Levels 10 through 15, the project demonstrates how legacy downtown office environments can be strategically replanned to support evolving organizational needs while translating workplace strategy into everyday spatial experience.
Occupying an elliptical tower floorplate that could have easily produced fragmented planning conditions, the design instead uses curvature as an organizing framework. Planning modules create consistency across six levels, improving navigation and spatial clarity while allowing the workplace to adapt over time as organizational needs evolve.
A new internal stair connects all six floors, transforming vertical circulation into a social and visual connector between teams. Rather than functioning only as infrastructure, the stair anchors shared amenities—including meeting areas, informal collaboration zones, and social spaces—helping unify what might otherwise have remained separate workplace environments into a single connected headquarters.
“The project shows how existing tower workplaces can be re-planned to better support how people work today. Rather than applying a single workplace model across six floors, the design introduces a flexible planning framework that supports both collaboration and focused work within an existing downtown tower environment while strengthening connection between teams,” — Ian Franceschi, Associate and Creative Director at Zeidler Architecture.
Access to daylight and views was distributed across the workplace rather than concentrated in perimeter offices. Collaborative spaces, support functions, and individual work settings were planned to ensure that a wide range of employees benefit from natural light and shared amenities, reinforcing a more equitable workplace experience.
Circulation throughout the workplace was designed to support both interaction and focus. Informal meeting points encourage spontaneous exchange between departments, while quieter perimeter routes provide alternative paths for movement that support concentration, privacy, and neurodiverse work preferences.
The workplace supports approximately 550 employees in a hybrid work environment through a scalable planning strategy that balances enclosed offices, open work areas, collaboration settings, and wellness spaces. Support functions typically located deep within the building core, including IT services and mail facilities, were integrated into visible circulation zones, reinforcing the role of operational teams within the broader workplace culture.
Material selections reinforce AltaGas’ renewed workplace identity through warm wood tones, refined lighting, textured finishes, and a restrained natural palette designed for longevity and adaptability. Acoustic strategies—including glazed office fronts, ceiling treatments, and material transitions—support a range of working styles across both collaborative and focused environments.
By aligning spatial planning with organizational change, the AltaGas Office Revitalization demonstrates how existing tower workplaces can be repositioned to support hybrid work patterns, strengthen interdepartmental connections, and translate corporate culture into everyday experience.
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Client: AltaGas Ltd.
Interior design and Prime Consultant: Zeidler Architecture
Size: 130,000 sq. ft. (12,077 sq. m.)
Photographer: Adrien Williams
Awards: Shaw Contract Design Awards 2025 - Best of Canada
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