Sustainable architecture companies focus on designing spaces that minimize environmental impact while maximizing social and economic benefits. This industry encompasses firms engaged in green building practices, energy-efficient design solutions, and innovative materials use. The trend is increasingly leaning toward net-zero energy projects, driven by heightened awareness of climate change and resource conservation. These companies contribute not only to reducing carbon footprints but also enhance the quality of life through thoughtful urban planning. The industry's future is promising, as more clients demand sustainability, paving the way for ingenious design strategies that prioritize ecological balance.

This list features 23 sustainable architecture companies varying in size from smaller firms to large global players. Their headquarters span across continents, including the United States, Denmark, and Australia, with founding years from 1906 to 2006. Specializing in various aspects of sustainable design, these firms excel in innovative methodologies, renewable energy integration, and socially responsible projects. The commitment to sustainability drives their operations, reinforcing their reputation in the architectural sector.

Continue reading to explore the top sustainable architecture companies.

Top 23 Sustainable Architecture Companies

1. Gensler

• Website: gensler.com
• Ownership type: Private
• Headquarters: San Francisco, California, United States (USA)
• Employee distribution: United States (USA) 70%, United Kingdom (UK) 6%, China 4%, Other 20%
• Founded year: 1965
• Headcount: 5001-10000
• LinkedIn: gensler

Gensler is a global design and architecture firm based in San Francisco, California, founded in 1965. With a workforce of approximately 7,480 employees, Gensler operates across various sectors, including healthcare, education, and corporate environments. The firm specializes in architecture, interior design, and sustainability consulting, providing tailored solutions to enhance operational spaces for businesses and organizations. Gensler's collaborative approach allows them to tackle complex design challenges effectively. Their commitment to sustainability is reflected in their research initiatives, such as the Gensler Research Institute, which explores innovative design solutions for a changing world. The firm has also developed product sustainability standards to minimize the environmental impact of building materials. Gensler's projects often prioritize climate resilience and social equity, showcasing their dedication to creating spaces that benefit both people and the planet.

2. BIG - Bjarke Ingels Group

• Website: big.dk
• Ownership type: Corporate
• Headquarters: Brooklyn, New York, United States (USA)
• Employee distribution: Denmark 32%, United States (USA) 26%, United Kingdom (UK) 26%, Other 16%
• Latest funding: $335.0M, June 2014
• Founded year: 2006
• Headcount: 501-1000
• LinkedIn: big---bjarke-ingels-group

BIG - Bjarke Ingels Group is an architecture firm based in Brooklyn, New York, with a significant presence in Denmark and other countries. Founded in 2006, the firm specializes in innovative design solutions across various sectors, including architecture, landscape design, and engineering. BIG serves both public and private clients, focusing on creating functional designs that enhance urban environments. The firm has been involved in numerous notable projects, such as the CopenHill waste-to-energy plant, which features a ski slope on its roof, and the Google Gradient Canopy, which has achieved LEED Platinum certification. BIG's commitment to sustainability is evident in its approach to projects that integrate green technologies and local materials, aiming for certifications that reflect their environmental goals. The firm has a workforce of over 1,600 employees and has received significant funding, amounting to $335 million as of 2014, to support its ambitious projects.

3. Hok

• Website: hok.com
• Ownership type: Corporate
• Headquarters: New York, New York, United States (USA)
• Employee distribution: United States (USA) 82%, Canada 9%, United Kingdom (UK) 5%, Other 4%
• Latest funding: $200,000, October 2021
• Founded year: 1955
• Headcount: 1001-5000
• LinkedIn: hok

HOK is a prominent design firm based in New York City, specializing in architecture, engineering, and urban planning. Founded in 1955, the company has grown to employ nearly 3,000 professionals across multiple locations worldwide. HOK serves a wide range of clients, including corporate entities, government agencies, healthcare institutions, and educational organizations. The firm is known for its innovative design solutions that not only meet the specific needs of its clients but also prioritize sustainability and functionality. HOK's projects span various sectors, including aviation, civic, corporate, healthcare, and sports, showcasing their versatility and expertise. The firm actively engages in research and insights to enhance its design practices, and it has received recognition for its commitment to diversity, equity, and inclusion within its workforce. HOK's recent initiatives, such as launching a toolkit to promote equity in design, further illustrate its proactive stance in addressing contemporary challenges in architecture and urban planning.

4. Ramboll

• Website: ramboll.com
• Ownership type: Private
• Headquarters: Copenhagen, Denmark
• Employee distribution: Denmark 22%, India 13%, United States (USA) 12%, Other 53%
• Founded year: 1945
• Headcount: 10001+
• LinkedIn: ramboll

Ramboll Group A/S, founded in 1945 and headquartered in Copenhagen, Denmark, is a global engineering, architecture, and consultancy firm. With over 18,000 employees across more than 35 countries, Ramboll specializes in providing sustainable solutions in sectors such as energy, environment, and infrastructure. The company collaborates with governments and businesses to tackle complex challenges related to climate change and urban development. Their projects include designing offshore wind farms, which contribute significantly to renewable energy generation, and conducting research on the carbon footprint of building materials. Ramboll's commitment to sustainability is evident in their initiatives aimed at reducing embodied carbon in construction and promoting the circular economy. They also engage in studies that explore the relationship between architectural design and human well-being, further emphasizing their focus on creating environments that support both people and the planet.

5. ZGF Architects

• Website: zgf.com
• Ownership type: Family Owned
• Headquarters: Portland, Oregon, United States (USA)
• Employee distribution: United States (USA) 92%, Canada 8%
• Founded year: 1942
• Headcount: 501-1000
• LinkedIn: zgf-architects

ZGF Architects, founded in 1942 and based in Portland, Oregon, is a family-owned architecture firm with a workforce of approximately 893 employees. The firm specializes in sustainable design and urban planning, providing architectural services that prioritize community engagement and environmental stewardship. ZGF serves a variety of sectors, including education, healthcare, and government, and is recognized for its innovative design solutions that tackle climate challenges. The firm has been at the forefront of sustainable architecture, embracing these principles as core values long before they became widely recognized. ZGF is actively involved in industry initiatives aimed at promoting sustainability, such as the 2030 Challenge and the AIA Materials Pledge. Their projects, like the mass timber roof at Portland International Airport, exemplify their commitment to reducing both embodied and operational carbon. ZGF's approach reflects a holistic understanding of the relationship between buildings, people, and the environment, making them a significant player in the field of sustainable architecture.

6. Grimshaw

• Website: grimshaw.global
• Ownership type: Private
• Headquarters: London, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 41%, Australia 25%, United States (USA) 22%, Other 11%
• Founded year: 1980
• Headcount: 501-1000
• LinkedIn: grimshaw

Grimshaw is an architecture firm based in London, England, founded in 1980. With a workforce of approximately 517 employees, the firm specializes in innovative design and sustainability. Grimshaw serves a variety of clients, including educational institutions and government entities, providing architectural and urban planning services. The firm is particularly noted for its commitment to net zero carbon design, reflecting a proactive stance on modern environmental challenges. Their mission includes delivering meaningful designs that enhance user experience while addressing sustainability. Grimshaw has pledged to achieve net zero carbon operations and aims to create regenerative buildings by 2030. Their portfolio includes significant projects in aviation, rail, culture, and education, showcasing their ability to integrate sustainable practices into various sectors.

7. Cox Architecture

• Website: coxarchitecture.com.au
• Ownership type: Private
• Headquarters: The Rocks, New South Wales, Australia
• Employee distribution: Australia 99%, Other 1%
• Founded year: 1964
• Headcount: 201-500
• LinkedIn: cox-architecture

Cox Architecture, founded in 1964 and based in The Rocks, New South Wales, Australia, is a private architecture firm with a workforce of approximately 562 employees. The firm specializes in sustainable design and planning, offering services in architecture, interior design, and urban design. Cox Architecture has built a reputation for innovative solutions that tackle environmental challenges, ensuring that their projects positively impact both the built and natural environments. They have a strong focus on passive design principles and the use of locally sourced materials. The firm is also Climate Active certified, maintaining carbon neutrality in its operations and aiming for carbon-positive targets. Their commitment to sustainability is reflected in their appointment of a dedicated Head of Sustainability and their involvement in various sustainability initiatives. Cox Architecture has completed numerous projects recognized for their sustainable design, including the Sustainable Buildings Research Centre at the University of Wollongong, which was the first Certified Living Building Challenge project in Australia. Their extensive portfolio and ongoing commitment to sustainability position them as a significant player in the architecture industry.

8. Skidmore, Owings & Merrill (SOM)

• Website: som.com
• Ownership type: Private
• Headquarters: New York, New York, United States (USA)
• Employee distribution: United States (USA) 80%, United Kingdom (UK) 9%, China 4%, Other 7%
• Founded year: 1936
• Headcount: 1001-5000
• LinkedIn: skidmoreowingsmerrill

Skidmore, Owings & Merrill (SOM) is an architecture and engineering firm based in New York City, founded in 1936. With a workforce of nearly 1,900 employees, SOM specializes in designing buildings and urban spaces that are both functional and sustainable. The firm serves a wide range of clients, including corporations and government entities, and employs a multidisciplinary approach that integrates various design and engineering disciplines. SOM is recognized for its commitment to sustainability, having achieved carbon neutrality in its operations and actively participating in initiatives aimed at reducing carbon emissions in the built environment. Their projects often incorporate innovative materials and technologies, such as mass timber and low-carbon concrete, reflecting their dedication to advancing sustainable practices in architecture. The firm also engages in research and advocacy to promote progressive building practices, making it a significant contributor to the discourse on sustainable architecture.

9. Jasmax

• Website: jasmax.com
• Ownership type: Private
• Headquarters: Auckland, Auckland, New Zealand
• Employee distribution: New Zealand 93%, Australia 7%
• Founded year: 1963
• Headcount: 201-500
• LinkedIn: jasmax

Jasmax is an architecture and design firm based in Auckland, New Zealand, with additional studios in Australia. Founded in 1963, the company has built a reputation for its innovative approach to architecture, interior design, and sustainability consulting. Jasmax operates across multiple sectors, including education, health, and community projects, providing tailored solutions that enhance the built environment. The firm is particularly noted for its commitment to sustainability, setting industry benchmarks with a goal to achieve net zero emissions across all projects by 2030. Their work reflects a deep respect for the natural environment and cultural heritage, as they actively engage with Indigenous communities to create designs that resonate with local identities. Jasmax's integrated approach combines various design disciplines, ensuring that their projects are not only functional but also contribute positively to society and the environment.

10. ATP architects engineers

• Website: atp.ag
• Ownership type: Private
• Headquarters: Innsbruck, Tyrol, Austria
• Employee distribution: Germany 39%, Austria 36%, Croatia 9%, Other 16%
• Founded year: 1951
• Headcount: 1001-5000
• LinkedIn: atp-architekten-ingenieure

ATP architects engineers, founded in 1951 and headquartered in Innsbruck, Austria, is a prominent architecture and engineering firm specializing in integral planning and design services. With a workforce of over 1,700 employees across multiple locations in Europe, ATP focuses on delivering comprehensive solutions for various sectors, including construction and healthcare. The firm is recognized for its commitment to sustainability, integrating energy-efficient practices and innovative design into its projects. ATP's approach emphasizes collaboration and interdisciplinary teamwork, which enhances the quality and effectiveness of their planning processes. Their notable projects include the transformation of the Plodine Tower in Rijeka, Croatia, into a high-performing, nearly zero-energy building. ATP also engages in research initiatives, partnering with universities to advance knowledge in sustainable building practices. This combination of practical experience and academic collaboration positions ATP as a significant player in the sustainable architecture sector.

11. Buro Happold

• Website: burohappold.com
• Ownership type: Private
• Headquarters: Bath, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 48%, United States (USA) 15%, India 10%, Other 27%
• Founded year: 1976
• Headcount: 1001-5000
• LinkedIn: buro-happold

Buro Happold Limited is a private engineering consultancy based in Bath, England, founded in 1976. With a workforce of over 3,400 employees, the firm provides a wide array of services that include advisory, sustainability consulting, and engineering design. They cater to various sectors, addressing challenges related to infrastructure and the built environment on a global scale. Buro Happold emphasizes integrated thinking and collaboration among its experts to deliver innovative solutions. Their commitment to sustainability is evident in their focus on climate change adaptation, energy efficiency, and the design of net zero carbon buildings. The firm actively participates in setting standards for health and wellbeing in buildings, contributing to reports and initiatives that promote sustainable practices. Their projects span multiple countries, showcasing their ability to adapt to different regulatory and environmental contexts.

12. Perkins&Will

• Website: perkinswill.com
• Ownership type: Private
• Headquarters: Chicago, Illinois, United States (USA)
• Employee distribution: United States (USA) 73%, Canada 11%, United Kingdom (UK) 6%, Other 10%
• Founded year: 1935
• Headcount: 1001-5000
• LinkedIn: perkins-will

Perkins&Will is a prominent design firm based in Chicago, Illinois, founded in 1935. With a workforce of over 2,800 employees, the firm specializes in architecture and planning, offering services that span architectural, landscape, and interior design. Their portfolio includes projects across various sectors, including healthcare, education, and urban development. Perkins&Will is recognized for its innovative and sustainable design solutions, catering to clients who seek to enhance their environments while being environmentally responsible. The firm actively promotes sustainability through its 'Living Design' philosophy, which integrates ecological principles into their projects. They have received accolades for their work, including recognition from the American Institute of Architects. Perkins&Will's commitment to social purpose and resilience further underscores their role in shaping a sustainable future in architecture.

13. White Arkitekter

• Website: whitearkitekter.com
• Ownership type: Private
• Headquarters: Sweden
• Founded year: 1951
• Headcount: 501-1000
• LinkedIn: white-arkitekter-ab

White Arkitekter is a private architecture firm based in Sweden, founded in 1951. With a workforce of approximately 797 employees, the company specializes in sustainable design and urban planning. They offer a comprehensive suite of services, including architecture, landscape architecture, project management, and interior design. White Arkitekter is committed to creating functional and environmentally friendly spaces, focusing on innovation and sustainability. Their projects span various sectors, including residential, healthcare, and cultural environments, reflecting their adaptability and expertise. The firm operates in an international context, with a presence in 13 countries, and actively engages in research and development to advance sustainable practices in architecture. Their annual sustainability report outlines their progress in reducing carbon emissions and their roadmap for achieving climate-positive outcomes by 2030.

14. Kpf

• Website: kpf.com
• Ownership type: Private
• Headquarters: New York, New York, United States (USA)
• Employee distribution: United States (USA) 68%, United Kingdom (UK) 19%, China 5%, Other 8%
• Founded year: 1976
• Headcount: 501-1000
• LinkedIn: kpf

Kohn Pedersen Fox Associates (KPF) is an architectural firm based in New York City, established in 1976. With a workforce of over 1,300 employees, KPF specializes in architecture, interior design, and master planning services. The firm serves a wide range of clients, including corporations and educational institutions, and is known for its innovative designs in civic spaces, commercial buildings, and residential developments. KPF has made significant strides in sustainable architecture, focusing on reducing carbon emissions and enhancing the livability of urban spaces. Their projects often feature adaptive reuse, which maximizes environmental and social value. KPF's commitment to sustainability is evident in their strategic planning for institutions like the University of Birmingham, where they aim to create a net-zero campus by 2045. The firm has also been involved in high-profile projects such as One Vanderbilt in New York and the Zayed International Airport in Abu Dhabi, showcasing their ability to integrate sustainability into large-scale developments.

15. SAMOO Architects & Engineers

• Website: samoo.com
• Ownership type: Private
• Headquarters: China
• Employee distribution: South Korea 85%, United Arab Emirates 6%, United States (USA) 4%, Other 5%
• Founded year: 1976
• Headcount: 501-1000
• LinkedIn: samoo-architects-%26-engineers

SAMOO Architects & Engineers is a private architecture and engineering firm founded in 1976, headquartered in Seoul, South Korea. With a workforce of approximately 900 employees, the company has established a strong presence in various sectors, including healthcare, industrial, and urban planning. SAMOO offers a comprehensive range of services, from architectural design to engineering consulting, with a notable emphasis on sustainable design. The firm has completed over 8,000 projects and has received numerous accolades, including prestigious design awards such as the Red Dot, iF Design Award, and IDEA. Their Vision 2025 initiative aims to innovate and adapt to future challenges in architecture and engineering, reinforcing their commitment to creating a better built environment. SAMOO's global reach includes offices in the United States, Vietnam, Malaysia, and other countries, showcasing their international expertise and influence in the industry.

16. Kirksey Architecture

• Website: kirksey.com
• Ownership type: Private
• Headquarters: Houston, Texas, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1971
• Headcount: 201-500
• LinkedIn: kirksey

Kirksey Architecture, founded in 1971, is a private architectural firm based in Houston, Texas, with additional offices in Austin and Dallas. The firm specializes in sustainable design and health-conscious buildings, providing a range of services that include architectural design, sustainable consulting, and green building certification. With a workforce of approximately 269 employees, Kirksey operates across various sectors, notably healthcare and education, demonstrating their capability to address diverse client needs. The firm is committed to creating high-performing, resource-efficient spaces that enhance the well-being of occupants and the surrounding community. Their approach integrates innovation and sustainability, ensuring that each project contributes positively to the environment. Kirksey Architecture has received recognition for its work, including awards for design excellence and workplace culture, further solidifying its reputation in the architectural industry.

17. Arkitema

• Website: arkitema.com
• Ownership type: Corporate
• Headquarters: Aarhus, Denmark
• Employee distribution: Denmark 65%, Sweden 20%, Norway 15%
• Latest funding: November 2018
• Founded year: 1969
• Headcount: 501-1000
• LinkedIn: arkitema

Arkitema is an architecture firm based in Aarhus, Denmark, founded in 1969. With a workforce of around 612 employees, the company specializes in sustainable design and urban development. Arkitema offers a range of services, including strategic consultancy, transformation of existing buildings, and planning for healthcare and educational facilities. Their clientele includes both public and private organizations seeking innovative architectural solutions that enhance quality of life. The firm has expanded its reach across Scandinavia, with offices in Denmark, Sweden, Norway, and recently Iceland. Arkitema is known for its commitment to sustainability, focusing on projects that preserve the environment and promote community well-being. Their work on projects like the transformation of historic buildings and the use of timber construction reflects their dedication to reducing the carbon footprint of the built environment. Arkitema is owned by COWI Holding A/S, which has further enhanced their capabilities in infrastructure and energy solutions.

18. DP Architects

• Website: dpa.com.sg
• Ownership type: Private
• Headquarters: Singapore
• Employee distribution: Singapore 63%, India 10%, Malaysia 7%, Other 20%
• Founded year: 1967
• Headcount: 501-1000
• LinkedIn: dparchitects

DP Architects Pte Ltd, established in 1967, is a prominent architectural firm based in Singapore. With a workforce of approximately 955 employees, the firm specializes in a wide array of design services, including project management, interior design, and notably, sustainable architecture. DP Architects serves various sectors, particularly construction and urban development, providing innovative solutions tailored to meet the unique needs of its clients. The firm has made significant strides in sustainability, launching initiatives such as the Environmental Sustainable Design unit in 2010 and the Smart Sustainability Unit in 2022. Their commitment to sustainability is further highlighted by their comprehensive sustainability plan, which targets net zero carbon emissions for both their projects and business operations by 2045. DP Architects has received multiple awards for its projects, reflecting its dedication to design excellence and sustainable practices.

19. Tengbom

• Website: tengbom.se
• Ownership type: Private
• Headquarters: Stockholm, Stockholm, Sweden
• Employee distribution: Sweden 98%, Other 2%
• Founded year: 1906
• Headcount: 201-500
• LinkedIn: tengbom

Tengbom is an architecture firm based in Stockholm, Sweden, founded in 1906. With a workforce of approximately 415 employees, the company specializes in sustainable architecture and design solutions that prioritize both aesthetics and functionality. Tengbom serves a variety of clients, including public and private organizations, and is known for its work on projects such as schools, hospitals, and residential developments. The firm is committed to enhancing community well-being through thoughtful design, integrating natural materials, and fostering social interaction in its projects. Tengbom also actively participates in research initiatives focused on generative AI and circular business models, showcasing its innovative approach to sustainability in architecture.

20. WOHA Architects

• Website: woha.net
• Ownership type: Private
• Headquarters: Singapore
• Employee distribution: Singapore 100%
• Founded year: 1994
• Headcount: 51-200
• LinkedIn: woha-architects

WOHA Architects is an architecture and urban design firm based in Singapore, founded in 1994 by Wong Mun Summ and Richard Hassell. The firm specializes in sustainable and integrated design solutions tailored for urban environments. With a team of approximately 99 employees, WOHA engages with a variety of clients, including developers, government agencies, and private individuals. Their work addresses pressing challenges related to climate change and rapid urbanization, focusing on innovative architectural practices that foster community engagement and environmental stewardship. WOHA has received numerous accolades for its projects, including the Aga Khan Award and the RIBA Lubetkin Prize. Their notable works include the Oasia Hotel Downtown and Kampung Admiralty, both of which exemplify their commitment to sustainability. The firm also actively participates in research and education, sharing insights on sustainable design principles through talks and publications. Currently, WOHA has projects under construction in Singapore, Australia, China, and other regions in South Asia.

21. Feilden Clegg Bradley Studios (FCBStudios)

• Website: fcbstudios.com
• Ownership type: Private
• Headquarters: Bath, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 100%
• Latest funding: $889,000, March 2018
• Founded year: 1978
• Headcount: 201-500
• LinkedIn: feilden-clegg-bradley-studios

Feilden Clegg Bradley Studios (FCBStudios) is an architecture firm based in Bath, England, founded in 1978. With a workforce of around 135 employees, the firm specializes in sustainable and socially responsible design. FCBStudios is dedicated to creating spaces that not only meet the needs of their clients but also contribute positively to the environment and society. Their projects range from educational facilities to large-scale housing developments, all designed with a focus on community engagement and environmental impact. The firm actively collaborates with various stakeholders, including local communities and research groups, to ensure that their designs are both practical and innovative. FCBStudios has received numerous accolades for their work, including multiple RIBA Awards and the prestigious RIBA Stirling Prize. They are also committed to sharing knowledge and advocating for better design practices within the industry, further solidifying their role as a significant player in sustainable architecture.

22. Aedas

• Website: aedas.com
• Ownership type: Private
• Headquarters: Hong Kong S.A.R
• Employee distribution: United Arab Emirates 25%, Hong Kong S.A.R 24%, China 24%, Other 27%
• Founded year: 2002
• Headcount: 1001-5000
• LinkedIn: aedas

Aedas is an architectural firm based in Hong Kong, established in 2002. With a workforce of approximately 1,485 employees, the company operates across multiple regions, including the United Arab Emirates, China, and Singapore. Aedas specializes in a wide array of design services, including architecture, interior design, urban design, and master planning. The firm aims to provide innovative solutions for urban environments, leveraging its global presence and local expertise. Aedas is known for its collaborative approach, bringing together creative minds from various backgrounds to address the unique challenges of each project. The firm has undertaken numerous projects that reflect a deep understanding of the social and cultural contexts in which they operate, contributing to the development of sustainable urban spaces.

23. Architectus

• Website: architectus.com.au
• Ownership type: Private Equity
• Headquarters: Melbourne, Victoria, Australia
• Employee distribution: Australia 87%, New Zealand 8%, Other 5%
• Latest funding: October 2021
• Founded year: 2001
• Headcount: 501-1000
• LinkedIn: architectus

Architectus is a prominent architecture firm based in Melbourne, Victoria, Australia, founded in 2001. With a workforce of nearly 1,000 employees, the firm specializes in design and planning services across various sectors, including education, health, and commercial. Architectus collaborates with both public and private clients to create innovative and sustainable environments that address the evolving needs of communities. The firm operates through a network of studios in Australia and New Zealand, focusing on delivering high-quality architectural solutions. Architectus is recognized for its commitment to sustainability, actively pursuing carbon neutrality and engaging in social impact initiatives. Their projects reflect a dedication to creating spaces that are not only functional but also environmentally responsible and socially inclusive.

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