1 Marlborough: A Novel Era of Luxury Living in Toronto’s Rosedale
Toronto’s prestigious Rosedale neighborhood is preparing for the arrival of 1 Marlborough, a boutique luxury condominium development that blends historic character with contemporary architectural design. Developed by Devron and Dorsay, the project aims to reimagine a beloved landmark, creating a collection of timeless homes that respect the deep heritage of one of the city’s most storied communities.
Project Overview and Architectural Vision
Located at the intersection of Yonge Street and Marlborough Avenue, 1 Marlborough is designed as a limited collection of residences rather than a high-density tower. The project is architecturally designed by Audax and is slated to launch in 2026. The development emphasizes privacy and expansive living, positioning itself in the ultra-luxury segment of the Toronto real estate market.
Key Project Specifications
- Developer: Devron &. Dorsay
- Architect: Audax
- Building Height: 13 Levels
- Total Residences: Approximately 58 exclusive suites
- Suite Sizes: Ranging from 2,000 to 6,000 sq ft
- Expected Arrival: 2026
Designed for End-Users and Legacy Living
Unlike many modern developments focused on investor density, 1 Marlborough is specifically designed for end-users. The residence focuses on “homes of distinction,” offering spacious layouts meant to be cherished for generations. This commitment to quality is evident in the inclusion of a dedicated Penthouse Collection, featuring expansive layouts that prioritize light, balance and lasting comfort.

Investment and Pricing
Given its location in the heart of Rosedale and its boutique nature, 1 Marlborough enters the market at a premium price point. Pricing for these luxury residences is starting in the high $3M’s, reflecting the exclusivity of the building’s limited suite count and the prestige of the address.
- Boutique Scale: With only about 58 homes, the project offers a level of privacy rare for Toronto condos.
- Heritage Integration: The design balances modern sustainability with the historic legacy of Rosedale.
- Expansive Living: Suite sizes are significant, reaching up to 6,000 sq ft.
- Prime Location: Situated at 1 Marlborough Avenue, providing a quiet expression of life in a high-demand neighborhood.
Frequently Asked Questions
When will 1 Marlborough be completed?
The project is expected to come to life in 2026.
Who is developing the project?
The development is a partnership between Devron Developments and Dorsay.
What makes this development different from other Toronto condos?
1 Marlborough distinguishes itself through its boutique size, larger-than-average suite footprints (up to 6,000 sq ft), and a specific focus on heritage architecture and world-class sustainability rather than maximizing unit density.
Looking Ahead
As 1 Marlborough moves toward its 2026 launch, it stands as a testament to the enduring appeal of Rosedale’s historic charm combined with modern luxury. For those seeking a residence that offers both the privacy of a boutique building and the prestige of a landmark address, this development represents a rare opportunity in the Toronto luxury market.
Worth a look