With a connection that goes back generations, Alterra and DiamondCorp come together as a powerhouse partnership to bring their experience and expertise as one combined strength to deliver Celeste Condominiums.


Developer & Builder

For nearly 50 years, Alterra has been shifting the paradigm in home building, designing and delivering homes that define the district and invigorate the neighbourhoods around them. With over 700 years of combined experience, their team of industry leaders provide in-depth market knowledge with extensive development and construction expertise, managed from conception to delivery for uncompromising quality.

With more than 30 million square feet of development and over $5 billion in real estate transactions, Alterra has delivered thousands of homes and award-winning condominiums across the Greater Toronto Area. Their deeply-held commitment to building thriving communities trickles down into every detail, from selecting materials to curating the surrounding commercial developments. Managed entirely by their own team, Alterra has complete control over the quality and delivery of their projects from start to finish, an approach that has been earning the trust of homeowners since 1973.



Inspired by their past and committed to the future growth of the Greater Toronto Area, DiamondCorp is dedicated to developing innovative, high-quality and award-winning residential, mixed-use, and masterplanned developments.

Their exceptional reputation stems from their expertise in achieving municipal approvals for complex sites that translate into outstanding communities. Their commitment to creating developments that are integrated into existing neighbourhoods, while still achieving their ambitious city building objectives is unparalleled, and they reach it by actively collaborating with local councillors and community groups.

Since 2008, they have invested in more than 20 development projects across the GTA, representing 19+ million square feet of development density, 3.5 million square feet of commercial development, and over 16,500 homes. DiamondCorp is the manager of four private equity funds that represent approximately $650 million in committed capital

Sweeny&Co Architects


Since 1988, Sweeny&Co Architects has been collaborating with owners, investors and tenants to achieve exceptional results in architectural design. The firm s reputation and expertise in adaptive reuse of heritage buildings is balanced with extraordinary new developments in residential, office, education, retail and hospitality markets, award-winning sites including McMaster University, the Waterfront Innovation Centre, RBC Centre, and One York. The team of 55+ professionals offer in-house development consulting, planning, urban design, architecture and interior design services. Sweeny&Co combines passion and creativity to design environments that elevate the human experience.

Truong Ly Design

Interior Design

With an expert team and a steadfast commitment to creating engaging and inspiring interior spaces, Truong Ly Design Inc. brings spectacular interiors to life. The firm s eponymous founder cut his teeth at one of Toronto s most esteemed design studios before striking out on his own. Today, Truong Ly is one of the city s most sought-after new talents, with a reputation for striking interiors that combine luxury and comfort in equal parts. Focusing on residential and hospitality, Truong Ly's unique designs and diverse services have been its keys to success and growth. The creative team constantly explores different parts of the world to bring back new ideas and values for clients and their projects.

The MBTW Group

Landscape Design

The MBTW Group is an award winning, multidisciplinary landscape architecture, urban design and community planning firm with experience in high density residential and mixed-use developments, greenfield communities, parks, trails, and urban landscapes. In business since 1975, the studio has worked with an international roster of clients in both private and public sectors, on awardwinning projects like the Hullmark Centre, University of Toronto s Isabel Bader Theatre, 25 York Street and Telus Tower in downtown Toronto. Combining a passion for excellence with expert in-house talent, the MBTW Group consistently produces highcaliber, forward-thinking design solutions and spectacular outdoor environments.