Mississauga, Ontario’s skyline has officially reached new heights. Rising to 82 storeys and standing at 258 metres, M3 (the third M City tower) is now the tallest residential tower in Canada outside of Toronto.

Celebrating the topping off of the third M City tower marks an incredible milestone, reflecting the dedication, precision and teamwork that have brought a bold vision to life in the heart of Mississauga.

We want to give recognition to our client, Urban Capital/Rogers, and the multiple sub-trades who helped make this project possible.

More than a building, M City is a vertical community redefining urban living in the heart of Mississauga.

A New Landmark for a Growing City

M3 is the latest addition to the ambitious M City development, a multi-phase master-planned community that is reshaping Mississauga’s downtown core. Designed to bring new energy and density to the area, M3 blends residential, retail, and office space to foster a walkable, connected neighbourhood. Its striking silhouette adds a bold architectural statement to the skyline, while its thoughtful design supports a vibrant, inclusive urban lifestyle.

“From splash pads and sundecks to community BBQ areas and shared lounges, we've built a building full of amenities that are designed to bring people together,” said Neil Christian, Senior Project Manager, Buildings Group, EllisDon. “These spaces encourage connection, wellness, and a sense of belonging—key ingredients for building a thriving vertical neighbourhood.”

M3's Secret Weapon: The Giant Pendulum Keeping You Steady

What truly sets M3 apart isn’t just its height or design—it’s the engineering marvel hidden near its peak. Suspended high above the city is a 705-tonne tuned mass damper (TMD), the largest of its kind in Canada. This pendulum-like device, used primarily in the supertall skyscrapers of New York City, is engineered to counteract the natural sway caused by wind. Technology like this is required in buildings as tall as M3 that are routinely exposed to strong winds.

When gusts push the tower, the TMD swings in the opposite direction, absorbing and neutralizing the motion. This ensures that residents—even those on the highest floors—experience a stable, comfortable environment. This is the first of its kind in Canada, and a defining feature that allows M3 to reach record-breaking heights without compromising livability.

Beyond comfort, the TMD plays a critical role in preserving the building’s long-term structural integrity. It’s a quiet giant working behind the scenes, safeguarding the tower’s performance and enhancing the everyday experience of those who call it home.

Building For Belonging

Urban life today demands more than just buildings; it calls for spaces that foster connection, promote well-being, and reflect the diversity and dynamism of the people who call them home. M3 rises to meet that challenge. Every element of the project—from its mixed-use layout to its public spaces and engineering innovations—is designed to support long-term livability, accessibility, and connection.

This vision has been brought to life through the expertise and collaboration of key EllisDon teams, including Virtual Design & Construction (VDC), Oxford Builders, and Construction Sciences, whose contributions have been instrumental in shaping both the form and function of M3.

For EllisDon, this project reflects our deep commitment to the communities we help shape, and the ones we call home. M3 redefines what it means to live well in a modern Canadian city, where comfort, accessibility, and a sense of belonging are built into every floor. We live and work in these communities, and as such, we approach every project with care, purpose, and pride.

We’re not just building for the future—we’re building for our neighbours.

The Height of it All

The topping-off of M3 marks a pivotal moment in the evolution of what urban development can mean for a city like Mississauga. It signals the transition from structure to community, from blueprint to lived experience.

For EllisDon, this milestone represents the realization of a bold vision: to deliver a project that pushes the boundaries of engineering while anchoring itself in the values of livability, innovation, and connection. M3 is not only a new high point on the skyline—it’s a defining example of how we build with purpose, shaping spaces that reflect the future of Canadian cities.