We strive to design spaces that improve the natural environment, create value for the businesses and communities they serve, and improve the lives of the people who use them.

We commit to every design problem with curiosity, invention, and a generous spirit to uncover hidden opportunity. It is by embracing the constraints that push us to innovate that we create sustainable, meaningful spaces.

True to our Montreal roots, we promote diversity and openness across our offices and  partnerships. Our team offers the expertise of a global design firm with an unapologetic dose of hospitality; for us, design is personal.

Since 1957

More than 60 years
of experience

Ranked 30th

2024 World
Architecture 100


2024 Platinum standard winner
of Canada’s Best Managed
Companies program (Deloitte)


71 LEED-certified


Over 450 design awards
and distinctions


Offices, all carbon-neutral

Our leaders

Louis T. Lemay


André Cardinal

Senior Partner, Vice-President – Markets

Pierre Larouche

Senior Partner, Vice-President Business Strategy

Annie Hotte

Senior Partner, Chief Operating Officer

Jimmy Vachon

Chief Financial Officer

Robert Fiorino

Chief Marketing Officer

Jean-Francois Arcand

Senior Partner, Transportation

Marc Choquette

Senior Partner, Director, Major projects

Amro El Chabti

Senior Partner, Corporate Intelligence

Jean-Francois Gagnon

Senior Partner, Design Principal

Eric Pelletier

Senior Partner, Design Principal

Martin St-Onge

Senior Partner, Healthcare

Lucie St-Pierre

Senior Partner, Site Planning & Development

Giovanni Tassone

Principal, Toronto

Ross Carter-Wingrove

Regional Director, Toronto

Philippe Collette

Regional Director, Quebec City

Grace Coulter Sherlock

Regional Director, Western Canada

Laura Grandan

Regional Director, Western Canada

Our history

A pan-Canadian brand

Teams across the country come together under a common name – Lemay – and continue to collaborate seamlessly on multiple projects.

Consolidation of international offering

Consolidation of the Toronto team and launch of an architectural practice in New York City.

Expanding westward

Integration of Toker and Associates, a Calgary-based architectural and interior design firm.

Key additions

Lemay establishes itself in New York City with Andres Escobar Design. Andrew King takes over direction of LemayLab with Eric Pelletier.

Major expansion

Acquisition of three entities from IBI Group and partnership with ELEMA, a structural engineering firm.

Eric Pelletier Architectes joins the firm

Integration of Eric Pelletier Architectes and first operations in Toronto.

Integration of Groupe Robert Vachon Design

Lemay welcomes Groupe Robert Vachon, an interior design firm.

From father to son

Louis T. Lemay, an employee since 1984, takes the helm of the firm and an office opens in Quebec City.

New name

After three decades the firm is rebaptized Architectes Lemay et Associés.


Georges E. Lemay and Claude Leclerc found Lemay Leclerc Architectes in Verdun, Quebec.