1 Marlborough
Welcome to 1 Marlborough, an exclusive collection of only 58 residences right in the heart of Rosedale, where heritage and modern luxury converge.
Proposed by Devron, 1 Marlborough is imagined to be the best building in the city; one that will celebrate and enrich the property’s heritage, reach for the highest sustainability standards, and ultimately become an architectural landmark worthy of our city and admired the world over.
Launching in mid-2026, this rare offering invites discerning individuals and families to secure a home in one of Toronto’s most prestigious enclaves. Whether you’re drawn to urban convenience or serene sophistication, 1 Marlborough offers a living experience unlike any other.
Location
1 Marlborough Avenue, Toronto
To understand the allure of 1 Marlborough, one must first understand the unique rhythm of its surroundings. Rosedale is often cited as Toronto’s most distinguished neighbourhood, but that label barely scratches the surface of what it means to live here. This is a district defined by a "leafy aristocracy", a winding labyrinth of century-old maples and oaks that canopy over Georgian, Tudor, and Edwardian mansions. It is a place where the city’s frenetic pace slows to a dignified stroll.
The Intersection of History and Modernity
Located at 1140 Yonge Street, 1 Marlborough sits at the precise confluence of Rosedale and Summerhill. This is the "High Street" of Midtown Toronto. Just steps from your front door lies the "Five Thieves," a beloved row of gourmet purveyors that has served local families for generations including Nadege, Harvest Wagon, and more. Whether it is sourcing the finest cuts of meat, artisanal cheeses, or rare vintages, the daily rituals of sustenance here are elevated to an art form. The iconic clock tower of the former North Toronto Railway Station (now the flagship LCBO) stands as a sentinel nearby, a constant reminder of the area’s deep historical roots.
A Walkable Village in a Metropolis
What makes this location truly exceptional is its duality. To the east, you have the protected tranquility of the Rosedale Ravine lands—a sprawling network of nature trails that makes you feel miles away from the urban core. You can spend your mornings jogging through the Vale of Avoca or walking your dog in Ramsden Park, surrounded by lush greenery and the sound of rustling leaves.
Yet, turn west or step onto Yonge Street, and you are immediately connected to the pulse of the city. The Summerhill and Rosedale subway stations are both within a short, pleasant walk, offering seamless access to the financial district, Yorkville, and beyond. However, most residents find little need to leave. The finest dining in the city is your neighbour. From the intimate, white-tablecloth service of long-standing French bistros to the vibrant energy of Terroni’s rooftop, the culinary landscape here is sophisticated and varied.
The "Forever" Neighbourhood
Real estate in this pocket is tightly held, often passed down through generations. It is a community of establishment, where neighbours know each other and where there is a collective pride in preserving the character of the streetscape. Living at 1 Marlborough means inheriting this community. You are not just buying a condo; you are securing your place in a neighbourhood that has historically been the preserve of Canada’s most influential families, cultural icons, and captains of industry. It is a location that offers the ultimate luxury: the luxury of established context. There are no "up-and-coming" promises here; Rosedale has already arrived, and it is waiting for you.
View of historic clock tower and train station (LCBO)
The Building
In a city crowded with glass towers that seem to disappear into the skyline, 1 Marlborough makes a statement by standing out. Developed by Devron, a builder known for their "custom home" approach to vertical living, the architecture of 1 Marlborough is a study in restraint, elegance, and materiality.
Architectural Pedigree
The design ethos of 1 Marlborough is rooted in the concept of "quiet luxury." The building acknowledges the heritage of its site—most notably the historic 1930s facade that once housed the Pierce-Arrow luxury car showroom. This Art Deco gem is not merely preserved; it is celebrated, serving as the grand podium that anchors the building to the street. The restoration of this limestone and brick facade ensures that the building feels like it has always been there, a timeless addition to the Yonge Street corridor rather than an imposition upon it.
Rising above this heritage base is a structure that respects the intimate scale of Rosedale. This is not a towering monolith; it is a mid-rise boutique residence that prioritizes privacy and light. The upper levels are set back, allowing for expansive terraces that offer sweeping views of the downtown skyline to the south and the verdant tree canopy of Rosedale to the north. The use of natural stone, warm masonry, and bronze detailing on the exterior speaks to a level of craftsmanship that is increasingly rare in modern development.
A Boutique Experience
With only approximately 58 suites, 1 Marlborough offers an exclusivity that is impossible to find in larger developments. There are no crowded elevators, no busy lobbies, and no transient neighbours. This is a "vertical estate," a community of like-minded individuals who value privacy and serenity. The lobby is designed not as a waiting area, but as a drawing room—a transition space that bridges the bustling energy of Yonge Street with the calm sanctuary of your home. A 24-hour concierge and porter service ensures that your every need is met, from receiving packages to arranging private transport, providing the service level of a five-star hotel within the comfort of a private residence.
Details and Financials
| Developer | Devron |
|---|---|
| Location | Yonge St & Marlborough Ave — Rosedale, Toronto |
| Building Type | Boutique luxury condominium |
| Number of Suites | ~58 residences |
| Suite Sizes | Approx. 1,800 sq.ft.+ including larger residences & penthouses |
| Penthouse Collection | Yes — expansive luxury layouts |
| Pricing | Starting high $3M’s — many suites under $5M |
| Launch Timing | Mid-2026 |
Gallery
The Builder
DEVRON
Who builds your home is just as important as where it is built. 1 Marlborough is the latest vision from Devron, a developer that stands apart in the Toronto landscape.
Building Beyond Measure
Devron is not a typical high-volume condo developer. They are a family-owned company with roots deep in the world of custom home building. Their story began with "Ron Custom Homes," building luxury single-family estates for Toronto’s most discerning clients. They have carried that DNA into the world of multi-residential development.
Their philosophy, "Building Beyond Measure," is a commitment to quality that transcends what is visible to the naked eye. While other developers might focus on flash and marketing, Devron focuses on the "bones" of the building—the insulation, the soundproofing, the sustainability, and the livability of the floor plans. They understand that a home is an emotional asset, a backdrop for life’s most important moments.
A Reputation for Excellence
Devron has built a reputation for creating "legacy" projects, buildings that contribute positively to the architectural fabric of the city.
The Winslow: In Lawrence Park, Devron proved that you could build a mid-rise condo that feels like a collection of custom homes.
The Vanguard: In Markham, they set a new standard for sustainability and family-oriented condo living.
101 Spadina: A testament to their ability to blend heritage with contemporary design in a high-density urban environment.
The Devron Promise
When you buy a Devron home, you are buying into a partnership. They are known for their transparency, their integrity, and their obsession with customer satisfaction. They don't just hand over the keys; they curate the experience of ownership. For 1 Marlborough, Devron has partnered with Dorsay, another respected name in the industry, ensuring that this project is backed by decades of combined experience and financial stability.