1 York Street, (One York Street), also known as The Sun Life Financial Tower, is Toronto's most connected Class AAA office address. Completed in 2016 and developed by Menkes Developments Ltd. and the Healthcare of Ontario Pension Plan (HOOPP) in partnership with Sun Life Financial, this landmark 35-storey, 800,000 sq ft tower anchors Toronto's South Core Business District at the foot of York Street, between Lakeshore Boulevard and Harbour Street, directly between Union Station and Lake Ontario.
The building is the highest-scoring LEED Core+Shell Platinum office project in Toronto's history, achieving 89 points, a record at the time of certification. It is also Canada's first completed new development to earn Wired Score Platinum certification, recognizing best-in-class digital connectivity and smart infrastructure. Together, these dual Platinum ratings make 1 York Street the benchmark for sustainable, technology-ready office space in Toronto's South Core.
Part of a landmark mixed-use complex encompassing approximately 2 million sq ft of density on a two-acre site, including the 66- and 70-storey Harbour Plaza Residences and a four-storey PATH-connected retail podium, 1 York Street places office tenants at the epicenter of live, work, and play in downtown Toronto. Home to anchor tenants Sun Life Financial (floors 22–35), HOOPP (floors 16–21), and CIBC Mellon (ground to floor 14), the building is supported by a world-class retail podium including Winners, Coppa's Fresh Market, Harbour Eats by Mercatino, Pure Fitness, and The Second City's 28,700 sq ft Toronto home.
Please visit Impark for parking inquiries
1 York Street was designed to set a new benchmark for Class AAA office development in Toronto, combining record-breaking LEED sustainability performance, Canada-first Wired Score Platinum digital infrastructure, 24,000 sq ft open floor plates, and a 50-foot-high lobby that functions as an extension of the public realm. Every office floor rises above the Gardiner Expressway, ensuring unobstructed panoramic views of either the city skyline or Lake Ontario.
Building Highlights:
1 York Street occupies two-thirds of a full city block at the foot of York Street, between Lakeshore Boulevard and Harbour Street — the precise midpoint between Union Station and Lake Ontario in Toronto's South Core Business District. The building's unique urban positioning means tenants are simultaneously connected to Canada's busiest transit hub, Toronto's growing South Core financial community, and the city's revitalized central waterfront, all within minutes on foot. This is downtown Toronto's most transit-connected office address.
The direct PATH connection from 1 York Street places Union Station at a 5-minute indoor walk, providing uninterrupted, weather-protected access to TTC subway Lines 1 and 2, GO Transit, UP Express, and VIA Rail. At the same time, the Gardiner Expressway off-ramps at York Street offer a 2-minute drive for vehicular commuters and clients. The building's surrounding streetscape includes more than 50 restaurants within a 5-minute radius, Scotiabank Arena at a 4-minute walk, Ripley's Aquarium, Rogers Centre, Harbourfront Centre, and Billy Bishop Airport ferry at 10 minutes on foot.
1 York Street presents a rare opportunity to lease office space in Toronto's most recognized South Core address, Canada's highest-scoring LEED Platinum office tower with Wired Score Platinum digital infrastructure, direct PATH connection to Union Station, and 24,000 sq ft open, column-free floor plates. Available suites feature floor-to-ceiling windows with panoramic city or Lake Ontario views, raised floor systems with underfloor air distribution, and full access to the building's Class AAA amenity suite, including the fitness centre, podium rooftop terrace, and 270+ bike storage. For current suite sizes, floor availability, and leasing rates, contact the Menkes commercial leasing team.
1 York Street, is a 35-storey, 800,000 sq ft Class AAA office tower in Toronto's South Core Business District, completed in 2016 and developed by Menkes Developments Ltd. and the Healthcare of Ontario Pension Plan (HOOPP) in partnership with Sun Life Financial. The building is Toronto's highest-scoring LEED Core+Shell Platinum office development (89 points) and Canada's first completed new development to earn Wired Score Platinum certification. It forms part of a landmark ~2-million sq ft mixed-use complex also encompassing Harbour Plaza Residences and a 151,500+ sq ft PATH-connected retail podium. 1 York Street is located at the intersection of York Street and Harbour Street in Toronto's South Core Business District, between Lakeshore Boulevard and Harbour Street, directly between Union Station and Lake Ontario. The postal code is M5J 2L9. Union Station is a 5-minute indoor walk via the building's direct PATH connection. The Gardiner Expressway is a 2-minute drive, and Scotiabank Arena is a 4-minute walk. The major office tenants at 1 York Street are Sun Life Financial (occupying floors 22–35), HOOPP, Healthcare of Ontario Pension Plan (floors 16–21), and CIBC Mellon (ground floor to floor 14), along with Sovereign General Insurance. The retail podium is home to Winners, Coppa's Fresh Market, Harbour Eats by Mercatino, Pure Fitness, Taylor & Colt, Glamour Secrets, and The Second City's 28,700 sq ft Toronto home on the third floor. For current leasing availability, contact the Menkes commercial leasing team. Yes — 1 York Street holds LEED Core+Shell Platinum certification, achieving 89 points — the highest LEED score ever awarded to a Toronto office building at the time of certification. Key sustainability features include an EnWave Deep Lake Water Cooling connection, rooftop photovoltaic solar panels, a rainwater cistern system, electric vehicle charging stations, 270+ secure bike storage spaces with cyclist showers, and a rooftop garden terrace. Yes — 1 York Street was the first completed new development in Canada to achieve Wired Score Platinum certification, awarded by WiredScore for best-in-class digital connectivity, smart building infrastructure, and technology readiness. This designation, combined with the building's LEED Platinum rating, makes 1 York Street unique among Toronto's Class AAA office towers in holding dual Platinum sustainability and connectivity certifications. Yes — 1 York Street has a direct PATH connection to Union Station, which is a 5-minute indoor walk. From Union Station, tenants have access to TTC subway Lines 1 and 2, GO Transit, UP Express, and VIA Rail. TTC streetcars (509/510 Harbourfront) stop at the building entrance. For drivers, the Gardiner Expressway is a 2-minute drive with dedicated on/off ramps nearby. Bike Share Toronto is immediately adjacent to the building entrance. Yes — 1 York Street has a four-level underground parking garage managed by Impark, with entrances off Harbour Street (east of York Street) and Lakeshore Boulevard West. The building also features electric vehicle charging stations on-site. For current parking rates and monthly permit inquiries, visit the Impark website or contact the Menkes property management team. The Second City — Canada's legendary comedy institution and the training ground for countless world-famous comedians — opened its Toronto home at 1 York Street on November 30, 2022, occupying a 28,700 sq ft space on the third floor of the building's retail podium. The venue is open to the public, adding a world-class entertainment destination to the building's live, work, play offering alongside Scotiabank Arena, Rogers Centre, and Ripley's Aquarium nearby. 1 York Street was developed by Menkes Developments Ltd. and the Healthcare of Ontario Pension Plan (HOOPP), with Sun Life Financial as the anchor tenant and equity partner. The building was designed by Sweeny Sterling Finlayson & Co. Architects Inc. (now Sweeny & Co), the same firm behind the Waterfront Innovation Centre. Construction cost was estimated at $375 million. To inquire about available office space at 1 York Street, visit the Available Spaces section of this page or contact the Menkes commercial leasing team at https://www.menkes.com/commercial/projects/one-york-street/contact.1 York Street, Toronto — Class AAA South Core Office Tower
One York Street, Building Features & Specifications
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In the Heart of Toronto's South Core — Steps from Union Station & the Waterfront
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Available Office Space at 1 York Street, Toronto
Frequently Asked Questions About 1 York Street, Toronto
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