# Architecture and Planning companies headquartered in Canada
Tamtam tracks 35 Architecture and Planning companies headquartered in Canada. This list ranks all of them by number of employees on LinkedIn, led by NORR, B+H Architects and Adamson Associates Architects. Their median headcount is 151. Half of them were founded in 1991 or later. The most common headquarters are Toronto (12), Montreal (6) and Vancouver (3).
These Canadian architecture and planning companies are mainly mid-sized to large firms, with a focus on comprehensive design services for a variety of sectors. Many emphasize sustainable development, innovative design, and creating spaces that enhance communities. Companies such as NORR and Adamson Associates Architects offer global architectural practices, while B+H Architects designs inspiring buildings and environments worldwide. Lemay focuses on sustainable development, and Architecture49 Inc. creates inspiring spaces that enhance community health and vitality. Most of these companies are headquartered in major Canadian cities, with a notable concentration in Toronto.
Several firms specialize in broad architectural and design services, often including interior design, landscape architecture, and urban planning. For example, Kasian Architecture Interior Design and Planning uses design to improve lives, and Diamond Schmitt creates sustainable buildings for cultural, academic, and civic spaces. Omicron offers integrated development services in Western Canada, and Parkin Architects specializes in healthcare and institutional design. The data shows a strong concentration of headquarters in Toronto, with other significant hubs in Montreal and Vancouver.
π¨π¦ Canada Β· 35 companies Β· Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [NORR](https://www.tamtam.ai/c/norr) (norr.com)
Employee-owned A&E firm with 800 professionals in various sectors across multiple countries, focusing on purpose-driven design for sustainable and inclusive spaces | Architecture and Planning | π¨π¦ Toronto | 947 | 1938 |
| 2 | [B+H Architects](https://www.tamtam.ai/c/b-h-architects) (bharchitects.com)
Designing inspiring, memorable, and functional buildings and environments for clients globally, offering architecture, interior design, landscape, planning, and consulting services. | Architecture and Planning | π¨π¦ Toronto | 604 | |
| 3 | [Adamson Associates Architects](https://www.tamtam.ai/c/adamson-associates-architects) (adamson-associates.com)
Global architectural practice offering a full range of planning, interior, and urban design services worldwide with a focus on innovative design and technical expertise | Architecture and Planning | π¨π¦ Toronto | 417 | 1934 |
| 4 | [Architecture49 Inc.](https://www.tamtam.ai/c/architecture49-inc) (architecture49.com)
Architecture49 is a collective of experts in designing and building complex projects, creating inspiring spaces that enhance communities' health, vitality, and sustainability | Architecture and Planning | π¨π¦ Winnipeg | 408 | 2014 |
| 5 | [Lemay](https://www.tamtam.ai/c/lemay) (lemay.com)
Architects and designers focused on sustainable development, creating innovative spaces for growth, and recognized for management excellence and environmental commitment | Architecture and Planning | π¨π¦ Montreal | 403 | 1957 |
| 6 | [Kasian Architecture Interior Design and Planning](https://www.tamtam.ai/c/kasian-architecture-interior-design-and-planning) (kasian.com)
This company uses design to improve lives and create connections between people and place, delivering award-winning buildings across various sectors | Architecture and Planning | π¨π¦ Vancouver | 366 | 1983 |
| 7 | [Parkin Architects](https://www.tamtam.ai/c/parkin-architects) (parkin.ca)
An award-winning Canadian architecture practice specializing in healthcare, recreation, research, justice, and institutional design with a focus on positively impacting lives | Architecture and Planning | π¨π¦ Toronto | 361 | |
| 8 | [Diamond Schmitt](https://www.tamtam.ai/c/diamond-schmitt) (dsai.ca)
Global architecture practice creating sustainable buildings with innovative design solutions for cultural, academic, healthcare, and civic spaces worldwide Named among top employers and greenest companies | Architecture and Planning | π¨π¦ Toronto | 331 | 1975 |
| 9 | [Omicron](https://www.tamtam.ai/c/omicron) (omicronaec.com)
Integrated development services firm in Western Canada, offering solutions in various sectors such as industrial, commercial, residential, and more Focus on collaboration for better project experiences | Architecture and Planning | π¨π¦ Vancouver | 322 | 1998 |
| 10 | [DKA](https://www.tamtam.ai/c/dka) (dka.ca)
DKA Architects prioritizes teamwork and client collaboration to create unique, functional spaces with a distinct aesthetic signature that inspires communities | Architecture and Planning | π¨π¦ Montreal | 184 | 2009 |
| 11 | [BDP Quadrangle](https://www.tamtam.ai/c/bdp-quadrangle) (bdp.com)
Architecture, design, and engineering firm in North America, specializing in various sectors including residential, workplace, retail, education, and health | Architecture and Planning | π¨π¦ Toronto | 166 | 1986 |
| 12 | [BBB Architects](https://www.tamtam.ai/c/bbb-architects) (bbb.ca)
A full-service architectural firm specializing in master planning, architectural and interior design, project management, focusing on collaborative designs for various projects worldwide | Architecture and Planning | π¨π¦ Toronto | 165 | 1984 |
| 13 | [Γdifica](https://www.tamtam.ai/c/aedifica) (aedifica.com)
A leading Canadian-based architectural and design firm creating sustainable, inspiring spaces across multiple sectors with a collaborative, human-centric approach | Architecture and Planning | π¨π¦ Montreal | 162 | 1985 |
| 14 | [Erie Architectural Products](https://www.tamtam.ai/c/erie-architectural-products) (ykkap.com)
High-performance facade solutions provider specializing in designing, testing, and engineering building envelope solutions for large-scale projects using curtain wall systems | Architecture and Planning | π¨π¦ Lakeshore | 160 | 1981 |
| 15 | [KPMB Architects](https://www.tamtam.ai/c/kpmb-architects) (kpmb.com)
Design solutions focused on positive change, addressing complex challenges and unlocking opportunities for clients and communities with expertise, passion, and creativity | Architecture and Planning | π¨π¦ Toronto | 159 | 1987 |
| 16 | [BC2](https://www.tamtam.ai/c/bc2) (groupebc2.ca)
Urban development and strategic consulting services including urban planning, landscape architecture, economic optimization, and heritage studies with a focus on sustainability and innovation | Architecture and Planning | π¨π¦ Montreal | 156 | 2010 |
| 17 | [Jodoin Lamarre Pratte architectes](https://www.tamtam.ai/c/jodoin-lamarre-pratte-architectes) (jlp.ca)
Specializing in institutional architecture for healthcare, transportation, education, research, and culture, focusing on sustainable, human-centered design with a diverse team | Architecture and Planning | π¨π¦ Montreal | 153 | 1958 |
| 18 | [STGM Architecture](https://www.tamtam.ai/c/stgm-architecture) (stgm.ca)
Founded in 2001, a leading architectural firm in Quebec with a team of over 150 professionals focused on improving people's quality of life through innovative, sustainable designs | Architecture and Planning | π¨π¦ Quebec City | 151 | 2001 |
| 19 | [Reimagine](https://www.tamtam.ai/c/reimagine) (reimagine.ca)
The company focuses on a positive and sustainable approach to architecture, emphasizing regeneration and a happy journey to achieve it | Architecture and Planning | π¨π¦ Edmonton | 101 | 1997 |
| 20 | [Kirkor Architects and Planners](https://www.tamtam.ai/c/kirkor-architects-and-planners) (kirkorarchitects.com)
An award-winning architectural design firm creating mixed-use projects, residential buildings, and community facilities with a focus on sustainability and innovation | Architecture and Planning | π¨π¦ Toronto | 96 | |
| 21 | [ZAS Architects + Interiors](https://www.tamtam.ai/c/zas-architects-interiors) (zasa.com)
A full-service design firm specializing in architecture, planning, transportation, and interior design, with a focus on innovative, sustainable, award-winning projects | Architecture and Planning | π¨π¦ Toronto | 95 | 1984 |
| 22 | [Acton Ostry Architects Inc.](https://www.tamtam.ai/c/acton-ostry-architects-inc) (actonostry.ca)
A design-focused architecture firm founded in 1992, dedicated to sustainable and thoughtful design that responds to local context and client needs | Architecture and Planning | π¨π¦ Vancouver | 45 | 1992 |
| 23 | [Chamberlain Architect Services Limited](https://www.tamtam.ai/c/chamberlain-architect-services-limited) (chamberlainipd.com)
A leading company dedicated to improving environments through innovative design, construction, and project management solutions, focusing on sustainability and client value | Architecture and Planning | π¨π¦ Burlington | 39 | 1978 |
| 24 | [CSV Architects](https://www.tamtam.ai/c/csv-architects) (csv.ca)
An Ottawa-based architectural practice specializing in sustainable design for institutional, commercial, and residential projects, with a focus on green buildings and community development | Architecture and Planning | π¨π¦ Ottawa | 33 | 1999 |
| 25 | [Teeple Architects](https://www.tamtam.ai/c/teeple-architects) (teeplearch.com)
A renowned architectural firm specializing in innovative design, technical excellence, and exceptional service for public and private sector projects | Architecture and Planning | π¨π¦ Toronto | 31 | 1989 |
| 26 | [Truspace Design & Construction Firm](https://www.tamtam.ai/c/truspace-design-and-construction-firm) (truspace.ca)
A design-driven company offering single-source interior solutions for commercial spaces, creating innovative designs to inspire and maximize potential with turnkey solutions | Architecture and Planning | π¨π¦ Edmonton | 27 | 2015 |
| 27 | [f-BLOK architecture inc](https://www.tamtam.ai/c/f-blok-architecture-inc) (f-blok.ca)
Innovative problem-solvers in construction, focused on efficient project delivery through collaboration, thoughtful design, and maximizing investment in sustainable solutions | Architecture and Planning | π¨π¦ Winnipeg | 15 | |
| 28 | [Edge Architects](https://www.tamtam.ai/c/edge-architects) (edgeltd.ca)
Architectural firm focused on design excellence through innovation, collaboration, and professionalism, using BIM software and digital scanning for sustainable solutions | Architecture and Planning | π¨π¦ Kitchener | 11 | 2016 |
| 29 | [Construction Technologies](https://www.tamtam.ai/c/construction-technologies) (construction-technologies.ca)
The company offers low-cost, high-efficiency, renewable building materials and designs using basic technology for large or small production runs | Architecture and Planning | π¨π¦ Canada | 7 | 1991 |
| 30 | [Waymark Architecture](https://www.tamtam.ai/c/waymark-architecture) (waymarkarchitecture.com)
A collaborative architecture firm specializing in sustainable design, customizing solutions to meet each client's unique sustainability and social innovation goals | Architecture and Planning | π¨π¦ Victoria | 6 | 2015 |
| 31 | [borg architect inc.](https://www.tamtam.ai/c/borg-architect-inc)
An architecture firm focusing on sustainable practices, remote work, client consultation, and community engagement for unique and culturally respectful projects | Architecture and Planning | π¨π¦ Ottawa | 6 | 2019 |
| 32 | [PG Design Studio Inc](https://www.tamtam.ai/c/pg-design-studio-inc) (pgdstudio.com)
Innovative construction company focused on strong project concepts, collaborative integrated project delivery, and client-centric design solutions Join our team today! | Architecture and Planning | π¨π¦ Waterloo | 6 | 2015 |
| 33 | [Topia solutions jardins inc](https://www.tamtam.ai/c/topia-solutions-jardins-inc) (topia.ca)
This landscape architecture company focuses on creating environmentally-friendly and aesthetically pleasing gardens using native plants and sustainable materials They prioritize client comfort and satisfaction | Architecture and Planning | π¨π¦ Montreal | 5 | 2001 |
| 34 | [Passa Associates Architects](https://www.tamtam.ai/c/passa-associates-architects) (passa.ca)
The company specializes in sensitive and imaginative building design, focusing on architectural excellence, sustainability, and environmental responsibility for all projects | Architecture and Planning | π¨π¦ Windsor | 3 | 1993 |
| 35 | [Paula Bowley Architects Inc.](https://www.tamtam.ai/c/paula-bowley-architects-inc) (bowleyarchitects.ca)
A company specializing in sustainable architecture and construction, with a focus on universal accessibility, social responsibility, equity, and community consultation | Architecture and Planning | π¨π¦ Toronto | 2 | 1989 |
## How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
## More company lists in Canada
- [The largest companies in Canada](https://www.tamtam.ai/l/largest-companies-canada) (11,083)
- [Multinational companies in Canada](https://www.tamtam.ai/l/multinational-companies-canada) (1,934)
- [Manufacturers in Canada](https://www.tamtam.ai/l/manufacturers-canada) (946)
- [Retail chains in Canada](https://www.tamtam.ai/l/retail-chains-canada) (851)
- [Critical infrastructure operators in Canada](https://www.tamtam.ai/l/critical-infrastructure-operators-canada) (767)
- [Public sector organisations in Canada](https://www.tamtam.ai/l/public-sector-organisations-canada) (699)
- [Financial services firms in Canada](https://www.tamtam.ai/l/financial-services-firms-canada) (687)
- [Companies with in-house R&D in Canada](https://www.tamtam.ai/l/r-and-d-companies-canada) (678)
- [Logistics companies in Canada](https://www.tamtam.ai/l/logistics-companies-canada) (593)
- [Truck Transportation companies in Canada](https://www.tamtam.ai/l/truck-transportation-companies-canada) (581)
- [SaaS companies in Canada](https://www.tamtam.ai/l/saas-companies-canada) (543)
- [Hardware manufacturers in Canada](https://www.tamtam.ai/l/hardware-companies-canada) (502)
- [Energy companies in Canada](https://www.tamtam.ai/l/energy-companies-canada) (497)
- [Software Development companies in Canada](https://www.tamtam.ai/l/software-development-companies-canada) (484)
- [Professional services firms in Canada](https://www.tamtam.ai/l/professional-services-firms-canada) (481)
- [IT Services and IT Consulting companies in Canada](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-canada) (477)
- [Transportation, Logistics, Supply Chain and Storage companies in Canada](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-canada) (464)
- [Distributors and wholesalers in Canada](https://www.tamtam.ai/l/distributors-and-wholesalers-canada) (452)
- [Financial Services companies in Canada](https://www.tamtam.ai/l/financial-services-companies-canada) (432)
- [Healthcare providers in Canada](https://www.tamtam.ai/l/healthcare-providers-canada) (416)
- [Construction companies in Canada](https://www.tamtam.ai/l/construction-companies-canada) (391)
- [Oil and Gas companies in Canada](https://www.tamtam.ai/l/oil-and-gas-companies-canada) (380)
- [Companies with a mobile app in Canada](https://www.tamtam.ai/l/companies-with-mobile-app-canada) (367)
- [Retail companies in Canada](https://www.tamtam.ai/l/retail-companies-canada) (358)
## The same list elsewhere
- [Architecture and Planning companies in the world](https://www.tamtam.ai/l/architecture-and-planning-companies-in-the-world) (1,380)
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Source: https://www.tamtam.ai/l/architecture-and-planning-companies-canada