25 York Street, Toronto — South Core Office Tower at Union Station & Scotiabank Arena

25 York Street, also known as TELUS Harbour, is one of Toronto's most recognized office addresses, sitting at the corner of York Street and Bremner Boulevard in the South Core Business District, directly between Union Station and the waterfront. Completed in 2009 and developed by Menkes Developments Ltd., the Healthcare of Ontario Pension Plan (HOOPP) and Alcion Ventures, the 30-story, 786,000 sq ft tower was the first office building constructed on Toronto's former railway lands, helping pioneer what is now the city's most vibrant mixed-use business district.

The building has set global standards for how an office building should perform and be maintained over time. In 2025, 25 York Street became the first building in BOMA BEST® history to achieve a perfect score of 100%, earning the BOMA Toronto Award for its category. It holds a rare triple certification across three separate LEED designations, and in 2018 became Canada's first office building to earn Fitwel certification, a wellness standard that evaluates how a building supports the physical and mental health of the people who work in it every day. These aren't badges, they reflect real, measurable performance: lower energy use, cleaner air, more daylight, and healthier spaces that tenants can feel.

Anchor tenant TELUS occupies over 60% of the building as its Ontario headquarters, alongside Dye & Durham, Kinross Gold, Hudbay Minerals, and President's Choice Financial — all served by a 30,041 sq ft ground-floor retail podium and one of Toronto's most connected transit nodes.

Built to Perform — Building Features & Specifications

What sets 25 York Street apart isn't any single certification; it's how the building was engineered from the ground up to age better than any other office tower in Toronto. With 11-foot floor-to-ceiling glass, a 30-foot daylit lobby, motorized solar shading, deep-water cooling, and a rooftop community garden, the building delivers a daily workplace experience that its award record only begins to describe.

Building Highlights:

• 786,000 sq ft across 30 storeys
• Completed October 2009 — developed by Menkes Developments Ltd., HOOPP & Alcion Ventures
• Designed by Sweeny Sterling Finlayson & Co. Architects Inc. & Adamson Associates Architects
• First building in BOMA BEST® history to achieve a perfect score (100%, Platinum — 2025)
• Triple LEED certified — LEED Platinum EB:O+M, LEED Core & Shell Gold, LEED Commercial Interiors Gold
• Canada's first Fitwel-certified office building (2018)
• 27,470 sq ft open, column-free floorplates per floor
• 11-foot floor-to-ceiling glass on every office floor
• 30-foot daylit lobby connecting directly to PATH and transit
• Direct PATH connection to Union Station and Scotiabank Arena
• Built-in motorized solar shading covering 70% of the building — adjusts automatically by occupancy
• Raised-floor cold-air delivery for superior air quality and cable management flexibility
• Enwave Deep Lake Water Cooling
• Rainwater and condensate collection for non-potable water supply to washrooms (floors up to 10)
• Full LED lighting with occupancy sensors — including all parking levels
• Rooftop garden patios with indigenous species, xeriscaping, and community food gardens
• Secure in-building bicycle storage with shower and change facilities
• Zipcar and Bike Share Toronto programs directly accessible
• 3-level underground parking — managed by Precise ParkLink
• 30,041 sq ft of ground-floor retail
• On-site property management by Menkes

Steps from Everything — Union Station, Scotiabank Arena & the South Core Waterfront

25 York Street's address at the corner of York and Bremner is one of the most enviable in the city, on the former railway lands that put it squarely between Canada's busiest transit hub and the revitalized Toronto Central Waterfront, with Scotiabank Arena and Maple Leaf Square directly adjacent. The PATH connection from the building's lobby reaches Union Station in under 5 minutes indoors, with no elevator and no weather, connecting tenants to TTC subway, GO Transit, UP Express, and VIA Rail from a single starting point. Scotiabank Arena is a 2-minute indoor walk from the same corridor.

For tenants arriving by car, the Gardiner Expressway is a 2-minute drive with dedicated access via Bremner Boulevard, and the on-site Precise ParkLink garage has three levels of underground parking beneath the Maple Leaf Square complex. The surrounding neighbourhood, now fully built out as Toronto's South Core, puts tenants within a 10-minute walk of more than 50 restaurants, Rogers Centre, CN Tower, Ripley's Aquarium, Billy Bishop Airport, and the Toronto Central Waterfront.

Nearby Amenities & Transit:

• Union Station (TTC subway Lines 1 & 2, GO Transit, UP Express, VIA Rail), direct PATH connection, under 5-minute indoor walk
• Scotiabank Arena — 2-minute indoor walk via PATH
• Direct PATH access — weather-protected connection to Union Station, Financial Core & Scotiabank Arena
• TTC streetcar (509/510 Harbourfront) — at building entrance on Bremner Boulevard
• Gardiner Expressway — 2-minute drive via Bremner Boulevard
• Maple Leaf Square (Real Sports Bar, E11even, Aria Ristorante) — directly adjacent
• Rogers Centre — 7-minute walk
• Ripley's Aquarium of Canada — 7-minute walk
• CN Tower — 8-minute walk
• Toronto Central Waterfront — 5-minute walk
• Billy Bishop Airport ferry — 12-minute walk
• Bike Share Toronto station — directly adjacent to building
• Secure in-building bicycle storage + showers and change rooms
• 3-level underground parking — Precise ParkLink managed
• 30,041 sq ft ground-floor retail — in-building

Available Office Space at 25 York Street, Toronto

A rare full-floor opportunity is currently available at 25 York Street, the entire 11th floor at 27,470 sq ft, fully built out and ready to move into, available through February 2033. The space has been meticulously maintained and comes equipped with 253 workstations, 2 boardrooms (14+ persons), 4 meeting rooms (6–10 persons), 15 private offices, a full lounge and event space with kitchenette (capacity 100+), reception with coffee bar, a gym with lockers and shower, a wellness room, and a dedicated server room, furniture, and AV equipment available. A smaller Suite 610 (1,956 sq ft) is also available. Contact the Menkes leasing team for current availability and full suite details.

Frequently Asked Questions About 25 York Street, Toronto