Top 10 Leading Architecture Companies in Canada 2026

A new national library is set to open in Ottawa this year. It will be housed in Ādisōke, a 216,000-square-foot building and a $326 million project. A Toronto firm designed it with a local Ottawa partner.

This is what Canadian architecture is capable of. Firms from across the country design libraries, hospitals, concert halls and transit hubs at home, and they win international design competitions too. Some employ thousands of people. Others are small studios on the Nova Scotia coast that take home national medals year after year.

Whether you’re a developer, a public body or an institution, it’s important to choose the right firm. Your architect will shape your budget, timeline, building performance and how the building feels to the people who use it for the next 50 years.

Also Read: Top 10 Banks in Canada 2026

We looked at the firms that keep showing up in 2026 rankings, award lists and major project announcements. We checked each one’s headquarters, size, notable work and recent recognition. This guide looks at the top 10 architecture companies in Canada for 2026, from national multidisciplinary giants to design-led studios with global reputations.

Why Clients Work With Leading Architecture Companies in Canada

Deep Knowledge of Canadian Codes and Climate

Deep cold, heavy snow loads, wildfire risk and building codes that differ from one province to the next all shape how buildings are designed in Canada. Established architecture companies in Canada have solved these problems many times. That experience saves time at permitting and helps avoid costly redesigns.

Proven Delivery on Complex Public Projects

Whether you’re building a hospital, a university or a civic building, there are strict procurement rules and many decision makers involved. The firms on this list have delivered landmark public work across the country, and they know how to keep a large, politically visible project moving.

Sustainability and Mass Timber Expertise

Canada is a world leader in wood construction and low-carbon design. Several firms here are known for timber buildings and certified green projects, so if hitting carbon targets matters to you, their track record will help.

Design Quality That Lasts

Great architecture is meant to last generations. When a firm has won Governor General’s Medals or RAIC Gold Medals, you know it designs buildings that hold up both technically and culturally.

Top 10 Architecture Companies in Canada at a Glance

Top 10 Architecture Companies in Canada (2026)

Below is our 2026 ranking, based on scale, design reputation, recent recognition and the strength of each firm’s Canadian portfolio.

1. Stantec

Stantec is the biggest name on this list by a wide margin. Based in Edmonton, Alberta, it has more than 34,000 employees around the world. Architecture and buildings are one division, and Stantec also offers services in water, infrastructure, energy and the environment. That breadth lets it take on a hospital, campus or transit project with every discipline under one roof.

In 2025, Stantec had a record year, with gross revenue of C$8.1 billion and net revenue of C$6.5 billion, a 10.7% increase over 2024. For 2026, it is forecasting net revenue growth of 8.5% to 11.5%. Its architects worked on Bridgepoint Active Healthcare in Toronto alongside KPMB, Diamond Schmitt and HDR. If you’re looking for one accountable firm for a very large program, few Canadian firms match its capacity.

Key Architecture Solutions
✔ Healthcare, education and civic buildings
✔ Integrated engineering, from structural to MEP
✔ Transit, infrastructure and urban planning
✔ Environmental and sustainability consulting

Best for: Large public and institutional programs that need many disciplines and national reach.

2. DIALOG

DIALOG was founded in Calgary in 1960 as Cohos Evamy, an architecture and engineering firm. It changed its name to DIALOG in 2010 and has grown to more than 600 employees across five studios: Calgary, Edmonton, Vancouver, Toronto and San Francisco. It offers architecture, engineering, interior design, landscape architecture, urban planning and building performance consulting.

Its Alberta portfolio is hard to miss. Bankers Hall, Telus Spark, the Royal Alberta Museum, the Calgary Central Library and the reimagined Glenbow Museum are all DIALOG projects. It’s currently working on Scotia Place in Calgary and the UHN Toronto Western Hospital tower. DIALOG has been a certified B Corp since 2023, so it may be a good fit if social and environmental accountability matter to your project as much as design.

Key Architecture Solutions
✔ Integrated architecture and engineering
✔ Cultural, healthcare and sports venues
✔ Urban design and landscape architecture
✔ Building performance and sustainability consulting

Best for: Clients in Western Canada who want design and engineering from one integrated team.

3. Lemay

Lemay traces its roots to 1957, when Georges E. Lemay and Claude Leclerc founded Lemay Leclerc Architectes in Verdun, Quebec. Today the Montreal-born firm has more than 400 architects, designers and other professionals across 10 offices, including Montreal, Quebec City, Toronto, Calgary and New York. It specializes in architecture and interior design, with structural engineering through its partner ELEMA.

Lemay has been on a roll in 2026. Architizer named it the fourth-best architecture firm in Canada, up one spot, and the top firm in Montreal. It placed 27th in the 2026 World Architecture 100 and was a 2025 Platinum winner in Canada’s Best Managed Companies program. The firm has received more than 500 design awards and has 95 LEED-certified projects. Its Place des Montréalaises won Silver at the 2026 WAN Awards.

Key Architecture Solutions
✔ Transportation and healthcare facilities
✔ Commercial and workplace interiors
✔ Major public projects and urban spaces
✔ LEED and low-carbon design

Best for: Quebec and Eastern Canada clients seeking a large, award-winning design practice.

4. KPMB Architects

KPMB Architects was founded in Toronto in 1987 by Bruce Kuwabara, Thomas Payne, Marianne McKenna and Shirley Blumberg, and took its current name in 2013. It’s best known for cultural, academic and civic buildings, many of them in Canada’s biggest cities.

The TIFF Bell Lightbox, the Gardiner Museum and the Royal Conservatory’s TELUS Centre in Toronto, Manitoba Hydro Place in Winnipeg, the Canadian Museum of Nature in Ottawa and Remai Modern in Saskatoon are just some of its buildings. More recent work includes The Leaf, a horticultural building in Winnipeg, and the Allied Music Centre, which adds new facilities to Massey Hall on a tight downtown site. KPMB has won Governor General’s Awards, AIA Honor Awards and RAIC urban design awards.

Key Architecture Solutions
✔ Museums, theatres and concert halls
✔ University and research buildings
✔ Government and civic headquarters
✔ Heritage renewal and additions

Best for: Cultural institutions and universities planning a signature building.

5. Diamond Schmitt

Diamond Schmitt was founded in Toronto in 1975 by Jack Diamond and Donald Schmitt. It now has more than 20 principals and well over 200 staff. It’s known internationally for performing arts centers, libraries and campus buildings.

Its best-known work includes the Four Seasons Centre for the Performing Arts in Toronto, the renovated David Geffen Hall at Lincoln Center in New York and Buddy Holly Hall in Lubbock, Texas. In Ottawa, it worked with KWC Architects on the interior renovation of the Senate of Canada Building. The two firms also designed Ādisōke, a 216,000-square-foot joint facility for the Ottawa Public Library and Library and Archives Canada that is scheduled to open in 2026. Diamond Schmitt is also working on the Art Gallery of Ontario expansion with Selldorf Architects and Two Row Architect.

Key Architecture Solutions
✔ Opera houses, concert halls and theatres
✔ Public libraries and archives
✔ University and medical school campuses
✔ Heritage and government buildings

Best for: Performing arts and library clients who need world-class acoustics and public space.

6. Henriquez Partners Architects

Founded by Richard Henriquez, Henriquez Partners Architects is a Vancouver firm that celebrated its 50th anniversary in 2019. Richard Henriquez has received the RAIC Gold Medal and the Order of Canada. His son Gregory Henriquez now leads the firm, which is known for city-building projects that mix market housing, social housing and public space.

The Woodward’s redevelopment in Vancouver’s Downtown Eastside is its best-known project. Other work includes Gaslight Square, the Sylvia Tower, the Sinclair Centre, which won a Governor General’s Award for Architecture in 1990, and the National Peacekeeping Monument in Ottawa. In Toronto, it designed Mirvish Village. In February 2026, Architizer placed Henriquez Partners in the top ten of its 30 best architecture firms in Canada, and several of its projects have been featured in the A+Awards.

Key Architecture Solutions
✔ High-density mixed-use and residential towers
✔ Social and affordable housing
✔ Heritage adaptive reuse
✔ Urban master planning

Best for: Developers and cities pursuing large, socially minded urban projects.

7. Patkau Architects

Patkau Architects was founded in Edmonton in 1978 by John and Patricia Patkau and moved to Vancouver in 1984. The studio is known for its careful use of materials, especially wood, and for buildings closely tied to their surroundings.

Patkau has won 19 Governor General’s Awards and Medals in Architecture, and it received the 2023 RAIC Architectural Practice Award. Its projects include the Audain Art Museum in Whistler, the Winnipeg Millennium Library, La Grande Bibliothèque du Québec in Montreal and the Capilano Library in Edmonton. It’s currently designing the Academic Wood Tower at the University of Toronto, a showcase for tall timber construction.

Key Architecture Solutions
✔ Libraries and art museums
✔ Mass timber and wood innovation
✔ Academic buildings
✔ Landscape-driven residential design

Best for: Clients who want a design-led, timber-focused building with lasting cultural value.

8. Saucier + Perrotte Architectes

Saucier + Perrotte Architectes was founded in Montreal in 1988 by Gilles Saucier and André Perrotte. The studio is known for bold, sculptural buildings that respond to the ground they sit on. It works mostly on scientific, educational, cultural and sports buildings.

Saucier + Perrotte received the RAIC Gold Medal in 2018 and has won nine Governor General’s Medals in Architecture. Its best-known buildings include the Perimeter Institute for Theoretical Physics in Waterloo, the UBC Faculty of Pharmaceutical Sciences in Vancouver and the Stade de soccer de Montréal. It also designed the Complexe sportif Saint-Laurent, the Cinémathèque québécoise and the First Nations Garden Pavilion at the Montreal Botanical Garden.

Key Architecture Solutions
✔ Research and science facilities
✔ University and college buildings
✔ Indoor sports complexes
✔ Cultural and community buildings

Best for: Universities and research institutes wanting a distinctive, award-winning building.

9. MacKay-Lyons Sweetapple Architects

MacKay-Lyons Sweetapple Architects has practiced in Nova Scotia since 1985, with offices in Halifax and Lunenburg and another in North Adams, Massachusetts. The firm is led by four principals: Brian MacKay-Lyons, Talbot Sweetapple, Melanie Hayne and Shane Andrews. Its work is inspired by the building traditions of Atlantic Canada, reworked in a clean, modern way.

MacKay-Lyons Sweetapple has received more than 170 awards, including nine Governor General’s Medals, seven AIA National and International Honor Awards and 14 North American Wood Design and Building Awards. It received the RAIC Architectural Firm Award in 2014, and Brian MacKay-Lyons received the RAIC Gold Medal in 2015. Its work has been featured in more than 900 publications and eight monographs.

Key Architecture Solutions
✔ Custom residential and rural architecture
✔ Community and institutional buildings
✔ Wood design and construction
✔ Regionally rooted, sustainable design

Best for: Private and institutional clients in Atlantic Canada seeking acclaimed, site-specific design.

10. Hariri Pontarini Architects

Hariri Pontarini Architects was established in Toronto in 1994. It has a team of more than 45 registered and intern architects as well as support staff. Its projects include academic buildings, cultural facilities, private homes and high-rise residential and mixed-use towers.

Its best-known building is the Bahá’í Temple of South America, in the Andes foothills on the eastern edge of Santiago, Chile. Completed in October 2017, it won the RAIC International Prize in 2019. At home, Hariri Pontarini designed the Schulich School of Business at York University and the One Bloor tower in Toronto. That mix of spiritual, academic and commercial work makes it one of the most versatile design studios in Canada.

Key Architecture Solutions
✔ Cultural and spiritual buildings
✔ Academic and business school facilities
✔ High-rise residential and mixed-use towers
✔ Custom private residences

Best for: Developers and institutions in Ontario who want a high-design landmark.

How to Choose the Right Architecture Partner in Canada

Match the Firm to Your Building Type

A firm that specializes in concert halls may not be the best fit if you need a hospital or a rental tower. Look at completed projects that are similar in type and size to what you want to build.

Check Scale and Capacity

Large firms like Stantec and DIALOG can take on huge programs because they have big teams and engineers under one roof. Smaller studios let the principal architects spend more time on your project. Be honest about what your project actually requires.

Look at Local Experience

Building codes, municipal approvals and local trades vary across the country. Choosing one of the architecture companies in Canada with an office near your site can help you move faster through permitting, and the firm will know which contractors deliver.

Ask About Sustainability Results

Don’t stop at promises. Ask a prospective architect for certified projects, measured energy data and experience with mass timber or low-carbon materials. Lemay’s 95 LEED-certified projects and DIALOG’s B Corp status are the kind of proof to look for.

Review Awards, but Read Them Carefully

Governor General’s Medals and RAIC honors signal design quality, but they don’t guarantee budget control. Talk to past clients about cost, schedule and how the firm handled problems.

Frequently Asked Questions About Architecture Companies in Canada

What is the largest architecture company in Canada?

Of the firms on this list, Stantec is by far the largest, with C$8.1 billion in gross revenue in 2025 and more than 34,000 employees. It also offers many services beyond architecture. Among firms focused mainly on architecture, Lemay and DIALOG are among the largest.

Which architecture firms in Canada win the most awards?

Patkau Architects, Saucier + Perrotte and MacKay-Lyons Sweetapple have each won multiple Governor General’s Medals, and all three are tied to RAIC Gold Medals. KPMB and Diamond Schmitt have also received major national and international honors.

Which is the best architecture company in Canada?

There’s no single best firm for everyone. A national hospital program, a Montreal sports complex and a Nova Scotia house need very different partners. Shortlist two or three architecture companies in Canada with relevant work, then compare their teams, fees and references.

How much do architects in Canada charge?

Architecture fees depend on project type, size, complexity and the scope of services you need. Many firms quote a percentage of construction cost or a fixed fee. Ask each firm for a detailed fee proposal tied to a clear scope so you can compare your options fairly.

Conclusion

From Stantec’s global engineering platform to small Atlantic studios that win national medals, Canada’s architecture sector covers a lot of ground. The ten firms here have the portfolios, recognition and 2026 momentum to back up their reputations.

Whatever you’re planning to build, there’s a firm that fits your needs. Start with the firms whose past work looks most like your project. The best architecture companies in Canada will show you exactly what they’ve built, and they’ll be honest about what your budget can deliver.

Related Reading:

• Top 10 Construction Companies in Canada 2026
• Fintech Companies in Canada 2026