An exclusive collection of boutique residences designed to honor the historic legacy in Toronto’s most storied neighbourhood.
1 Marlborough Condos introduces a rare boutique luxury residence at Yonge Street and Marlborough Avenue, in Toronto’s prestigious Rosedale neighbourhood.
Developed by Devron in partnership with Dorsay, this limited collection blends historic architecture, modern design, and world-class sustainability.
Launching Mid-2026 – Register for Priority.
Legacy Edition 2026
This project is a boutique luxury condominium development featuring a limited collection of exclusive residences with expansive layouts and premium design. Developed by Devron & Dorsay and architecturally designed by Audax, the building emphasizes privacy, large suite sizes, and high-end living. With only ~58 residences and a dedicated penthouse collection, it stands in the ultra-luxury segment, offering spacious homes and elevated lifestyle amenities.
Get exclusive access to detailed suite layouts, penthouse plans, and the latest pricing package for 1 Marlborough.
Spacious Residences &
Penthouse Collection
1 Marlborough residences are designed for end-users, not investors chasing density. These are homes for the long term, crafted with the scale of traditional Rosedale estates.
1140 Yonge Street, Toronto, ON
Located at the exact intersection of Rosedale and Summerhill, 1 Marlborough sits in one of Midtown Toronto’s most desirable enclaves.
With only ~58 residences, 1 Marlborough offers an intimate, hotel-inspired lifestyle. This is a residence designed for absolute privacy.
Elegant residential lobby designed as a private, intimate drawing room.
24-hour concierge and dedicated porter service for seamless living.
Quiet elevators and low resident density ensure an exclusive atmosphere.
Enhanced soundproofing and privacy standards beyond the industry norm.
Be first to receive launch updates, priority pricing, and early suite selection at 1 Marlborough.
Experience the fusion of historic 1930s Art Deco restoration and modern architectural elegance. 1 Marlborough stands as a landmark in Rosedale with its natural stone facade and expansive private terraces.
1 Marlborough follows a philosophy of quiet luxury, elegant, restrained, and deeply intentional. Architecture meant to endure, not trend.
Rosedale is defined by its winding streets, century-old trees, ravine systems, and heritage homes. It offers a rare balance of tranquility and urban convenience.
Living at 1 Marlborough means becoming part of a community where real estate is passed down through generations. This is a timeless, prestigious enclave.
A rare balance of urban convenience and the tranquil charm of an established village. True walkable luxury within Canada’s most storied district.
Building Beyond Measure
Devron is a family-owned luxury developer with roots in custom estate home building. Bringing single-family craftsmanship into multi-residential projects.
Opportunities to own in Rosedale are exceptionally rare. As a boutique residence of only 58 suites, demand is expected to exceed availability instantly.
1 Marlborough is located at the intersection of Yonge Street and Marlborough Avenue in Toronto’s prestigious Rosedale neighbourhood.
Prices at 1 Marlborough start from the high $3M's. For a detailed Price List, please register for VIP access.
There are approximately 58 exclusive suites, including a limited penthouse collection.
The occupancy date for 1 Marlborough has not been fully announced yet. An official timeline is still pending confirmation. For the most up-to-date information and construction milestones, please register for our VIP newsletter.
Yes, 1 Marlborough features an exclusive Penthouse Collection with expansive layouts ranging up to 6,000 sq. ft. These residences offer oversized terraces with panoramic views of the Toronto skyline and Rosedale treetops.
Developed by Devron, 1 Marlborough focuses on long-term sustainability, featuring enhanced air filtration, high-performance acoustic insulation, and high-quality masonry that exceeds industry standards for energy efficiency.
