The office interior design industry focuses on creating functional and aesthetically pleasing work environments. This sector includes firms that specialize in spaces like corporate offices, educational institutions, and healthcare facilities. Companies range from large design houses to boutique studios, each offering unique approaches to office layouts, furnishings, and branding. Notably, trends toward remote work, sustainability, and wellness are redefining workspace designs today, pushing companies to innovate and adapt. As organizations increasingly prioritize employee well-being and productivity, the demand for thoughtful and engaging interior design is set to grow, signaling a dynamic shift within the industry.

This list features 21 notable office interior design companies, with headquarters spanning cities from San Francisco to Singapore. The firms vary in size, employing from about 44 to over 7,000 professionals, each established between the 1920s and 2010s. While predominantly private entities, they offer services like interior architecture, branding, and workplace consultancy. Specializing in sectors including technology, healthcare, and finance, these firms are recognized for their commitment to innovative, user-friendly designs that enhance productivity and reflect client identities.

Continue reading to discover the top office interior design companies.

Top 21 Office Interior Design Companies

1. IA Interior Architects

• Website: interiorarchitects.com
• Ownership type: Private
• Headquarters: San Francisco, California, United States (USA)
• Employee distribution: United States (USA) 88%, United Kingdom (UK) 5%, India 3%, Other 3%
• Founded year: 1984
• Headcount: 501-1000
• LinkedIn: ia-interior-architects

IA Interior Architects is a private architecture and design firm based in San Francisco, California, specializing in interior architecture. Established in 1984, the company has grown to employ nearly 1,000 professionals across various locations, including major cities in the United States and internationally. IA Interior Architects focuses on creating environments that prioritize the needs of people, offering comprehensive design services for workplaces, hospitality, retail, and government sectors. Their portfolio includes a wide range of projects that reflect their commitment to innovative design solutions that enhance user experience and align with client brand values. The firm is also dedicated to sustainability, actively engaging in initiatives that promote environmental responsibility and community involvement through their philanthropic arm, IA Reach. Their work has been recognized in various industry publications, showcasing their influence and thought leadership in the field of interior design.

2. Id21

• Website: id21.com.sg
• Ownership type: Private
• Headquarters: Singapore
• Employee distribution: Singapore 100%
• Founded year: 1996
• Headcount: 51-200
• LinkedIn: id21

Id21 Pte Ltd. is an interior design firm based in Singapore, specializing in commercial and office interior design since its inception in 1996. The company offers tailored design solutions and renovation services to a variety of sectors, including healthcare, finance, and technology. With a team of around 44 employees, Id21 focuses on creating bespoke environments that enhance workplace aesthetics and employee productivity. Their portfolio includes notable projects for clients such as Parkway Shenton Medical Clinic and LVMH Fashion Group, showcasing their ability to cater to high-profile businesses. Id21 has also been recognized with several awards, including accolades at the Asia Pacific Property Awards and the Singapore Good Design Awards, highlighting their commitment to quality and innovation in interior design.

3. tp bennett

• Website: tpbennett.com
• Ownership type: Private
• Headquarters: London, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 99%, Other 1%
• Founded year: 1921
• Headcount: 201-500
• LinkedIn: tp-bennett

tp bennett is an architecture and design firm based in London, UK, with additional offices in Manchester and Leeds. Founded in 1921, the company has built a reputation for delivering architectural, interior design, and planning services across multiple sectors, including offices and educational institutions. With a workforce of approximately 468 employees, tp bennett serves a variety of clients, helping them create spaces that are both functional and visually appealing. The firm has worked on significant projects such as Société Générale at One Bank Street and Schroders, demonstrating its capability in the office design sector. tp bennett also emphasizes sustainability and material innovation, reflecting a modern approach to design that resonates with current industry trends.

4. Unispace

• Website: unispace.com
• Ownership type: Private Equity
• Headquarters: Australia
• Employee distribution: Australia 23%, United States (USA) 21%, India 15%, Other 41%
• Latest funding: March 2021
• Founded year: 2010
• Headcount: 501-1000
• LinkedIn: unispace

Unispace is an Australian-based workplace design and construction firm founded in 2010. With a workforce of approximately 704 employees, the company operates globally, providing services that include workplace strategy, design, engineering, and construction. Unispace focuses on creating innovative, people-centric spaces that enhance productivity and employee engagement. Their portfolio spans various industries, such as financial services, technology, and life sciences, indicating their capability to address the unique needs of different sectors. The firm emphasizes a unified approach to project delivery, which allows for greater accountability and cost predictability. Unispace has also expanded its offerings through acquisitions, including a life sciences consulting firm, further solidifying its position in the market. They have not reported any recent funding, indicating a stable operational model without reliance on external investment.

5. 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. The company specializes in architecture, planning, and interior design, offering a wide array of services across various sectors, including healthcare, education, and urban development. With a workforce of approximately 2828 employees, Perkins&Will operates multiple studios across North America and internationally, showcasing their global reach. The firm is known for its innovative and sustainable design solutions, which cater to businesses and organizations looking to enhance their environments. Their work in office interior design is particularly noteworthy, as they focus on creating spaces that promote productivity and well-being. Perkins&Will has received numerous accolades for their projects, reflecting their commitment to design excellence and social responsibility.

6. Op

• Website: officeprinciples.com
• Ownership type: Private
• Headquarters: Reading, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 100%
• Founded year: 1988
• Headcount: 51-200
• LinkedIn: office-principles

Op, also known as OP Group, is a private company based in Reading, England, specializing in commercial workplace design and office solutions. Founded in 1988, the company has built a solid reputation over its 35 years of operation, focusing on creating customized office environments that enhance productivity and reflect the unique culture of their clients. They offer a wide array of services, including office interior design, fit-outs, refurbishment, and workplace consultancy. With a team of experts, Op has successfully completed over 1,300 projects, transforming more than 10 million square feet of office space. Their commitment to sustainability is evident as they achieved carbon neutrality in 2023, showcasing their dedication to environmentally responsible practices in the design and fit-out industry.

7. Space Matrix

• Website: spacematrix.com
• Ownership type: Private
• Headquarters: Singapore
• Employee distribution: India 84%, Singapore 5%, China 3%, Other 7%
• Founded year: 2001
• Headcount: 501-1000
• LinkedIn: space-matrix

Space Matrix is a private design and build firm founded in 2001, headquartered in Singapore. With a workforce of over 1,000 employees, the company specializes in workplace transformation, offering services that include interior design, construction, and sustainability consulting. They cater primarily to businesses looking to enhance employee wellbeing and productivity through innovative design solutions. Space Matrix has a strong presence in the APAC region, with a significant portion of its workforce based in India. The firm has successfully completed numerous projects across various industries, demonstrating their capability to adapt to different client needs. Their focus on integrating sustainability into their designs reflects a growing trend in the industry, making them a relevant player in the office interior design sector.

8. Sheppard Robson

• Website: sheppardrobson.com
• Ownership type: Private
• Headquarters: London, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 100%
• Founded year: 1938
• Headcount: 201-500
• LinkedIn: sheppard-robson

Sheppard Robson is a private architecture firm based in London, founded in 1938. With a workforce of approximately 377 employees, the firm specializes in design and planning services across multiple sectors, including education, healthcare, and commercial spaces. Their approach emphasizes sustainable architecture and innovative design solutions, which are critical in today's environmentally conscious market. Sheppard Robson has a dedicated interior design division, ID:SR, which collaborates closely with their architectural teams to address organizational challenges through thoughtful design. The firm has completed numerous projects that highlight their expertise in workplace design, making them a significant contributor to the office interior design sector. Their commitment to sustainability and community engagement further enhances their reputation in the industry.

9. M Moser Associates

• Website: mmoser.com
• Ownership type: Corporate
• Headquarters: Hong Kong S.A.R
• Employee distribution: India 27%, China 13%, United States (USA) 12%, Other 48%
• Latest funding: December 2023
• Founded year: 1981
• Headcount: 1001-5000
• LinkedIn: m-moser-associates

M Moser Associates is a design consultancy that specializes in creating innovative workplace environments. Established in 1981, the company has built a reputation for its focus on enhancing employee performance through thoughtful design. They offer a comprehensive range of services, including architecture, interior design, and workplace strategy, aimed at helping businesses adapt to evolving work dynamics. With a workforce of approximately 1,459 employees, M Moser operates globally, with significant presence in regions such as India, China, the United States, and the United Kingdom. The firm has worked with notable clients, including major corporations like LinkedIn and PayPal, showcasing their capability to handle large-scale projects. M Moser is also committed to sustainability, actively pursuing certifications and strategies that support net-zero aspirations in office design.

10. Oktra

• Website: oktra.co.uk
• Ownership type: Private
• Headquarters: London, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 100%
• Founded year: 1995
• Headcount: 51-200
• LinkedIn: oktra

Oktra is a prominent office design and fit-out company based in London, UK, with additional locations in Birmingham, Guildford, and Manchester. Founded in 1995, the company has built a reputation for creating tailored workspaces that enhance productivity and reflect the unique brands of their clients. Oktra provides a wide range of services, including office design, refurbishment, workplace consultancy, and furniture solutions. They cater to various sectors, including tenants, landlords, and coworking spaces, showcasing their adaptability in meeting diverse client needs. The firm is also committed to sustainability, having achieved certifications such as B Corporation and Planet Mark, which highlight their focus on social and environmental impact. Oktra has received numerous awards for their projects, further solidifying their position in the office interior design industry. With a team of over 200 professionals, they leverage their expertise to deliver innovative and effective workspace solutions.

11. STUDIOS Architecture

• Website: studios.com
• Ownership type: Corporate
• Headquarters: San Francisco, California, United States (USA)
• Employee distribution: United States (USA) 73%, France 21%, India 4%, Other 3%
• Latest funding: $35.0M, February 2022
• Founded year: 1985
• Headcount: 201-500
• LinkedIn: studios-architecture

STUDIOS Architecture, founded in 1985 and based in San Francisco, California, is an architecture and design firm that specializes in creating innovative and sustainable spaces for various businesses and organizations. With a workforce of approximately 389 employees, the firm offers a comprehensive range of services, including architectural design, interior design, master planning, and workplace strategy. Their approach emphasizes enhancing both the functionality and aesthetics of environments, ensuring that each project reflects the unique needs and aspirations of their clients. STUDIOS has worked with a variety of industries, focusing on projects that improve workspaces and foster collaboration. The firm has also received significant funding, amounting to $35 million in early 2022, indicating strong investor confidence in their vision and capabilities. Their commitment to sustainability and social responsibility is evident in their design philosophy, which prioritizes the human experience and environmental impact.

12. 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 is recognized for its expertise in architecture, interior design, and sustainability consulting, catering to businesses and organizations looking to enhance their operational spaces. Gensler's approach is collaborative, leveraging its extensive knowledge to address complex design challenges. The firm has made significant contributions to office interior design, focusing on creating environments that foster productivity and well-being. Their projects often incorporate innovative design solutions that respond to the evolving needs of the workplace, emphasizing flexibility and user experience. Gensler's commitment to sustainability is evident in their design practices, aiming to reduce environmental impact while enhancing the quality of spaces they create.

13. Db&b

• Website: dbb.com
• Ownership type: Private
• Headquarters: Singapore
• Employee distribution: Singapore 54%, Philippines 25%, China 13%, Other 8%
• Founded year: 1996
• Headcount: 201-500
• LinkedIn: dbbdesignbuild

Db&b is an interior design firm based in Singapore, specializing in commercial spaces. Established in 1996, the company has built a reputation for delivering tailored design solutions that enhance workplace environments. With a workforce of approximately 203 employees, Db&b operates not only in Singapore but also has a presence in the Philippines, China, and Malaysia. The firm provides a range of services, including design consultancy, design and build, and construction services, ensuring a seamless process for clients. Their approach emphasizes creating spaces that inspire and empower employees, reflecting a commitment to understanding the unique needs of each client. Db&b has worked with prominent companies across various industries, showcasing their ability to adapt and innovate in response to different corporate cultures and requirements.

14. ZIKZAK Architects

• Website: zikzakarchitects.com
• Ownership type: Private
• Headquarters: Kyiv, Kyiv, Ukraine
• Employee distribution: Ukraine 86%, Cyprus 7%, United States (USA) 7%
• Founded year: 2015
• Headcount: 11-50
• LinkedIn: zikzak-architects

ZIKZAK Architects is a private design studio based in Kyiv, Ukraine, with a secondary presence in Limassol, Cyprus. Established in 2015, the firm specializes in office and commercial interior design, aiming to create tailored solutions that enhance work environments. With a team of architects and interior designers, ZIKZAK Architects emphasizes creativity and innovation, pushing the boundaries of design to deliver impactful interior solutions. Their projects are characterized by a focus on sustainability and the use of modern materials and technologies. The firm prioritizes client relationships, ensuring that each design reflects the brand identity and aspirations of the businesses they serve. ZIKZAK Architects has worked on various projects, demonstrating their capability to transform spaces into functional and inspiring environments that foster productivity and collaboration.

15. TPG Architecture

• Website: tpgarchitecture.com
• Ownership type: Private
• Headquarters: New York, New York, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1979
• Headcount: 51-200
• LinkedIn: tpg-architecture

TPG Architecture is an architecture and design consultancy based in New York City, established in 1979. With a workforce of approximately 262 employees, the firm specializes in creating innovative spaces tailored to various sectors, including retail, healthcare, and technology. TPG offers a comprehensive suite of services, including architectural design, interior design, and workplace strategy, aimed at enhancing operational environments for businesses. Their collaborative approach ensures that each project aligns with the client's vision and functional requirements. TPG has built a reputation for designing modern and engaging workspaces, as evidenced by their recent accolades, including awards for their projects in retail and office design. The firm has also developed strategies to help clients navigate the complexities of returning to the workplace post-pandemic, showcasing their commitment to addressing current industry challenges.

16. RMW architecture & interiors

• Website: rmw.com
• Ownership type: Private
• Headquarters: San Francisco, California, United States (USA)
• Employee distribution: United States (USA) 97%, Other 3%
• Founded year: 1970
• Headcount: 51-200
• LinkedIn: rmw

RMW architecture & interiors, founded in 1970 and based in San Francisco, California, is a private architecture and design firm with a workforce of approximately 185 employees. The company specializes in crafting innovative and sustainable workspaces tailored to the unique needs of clients in sectors such as high tech, healthcare, and education. RMW emphasizes the importance of enhancing productivity and well-being through thoughtful design solutions. Their approach is rooted in collaboration, listening to clients, and fostering an environment of creative confidence among their team. RMW has been recognized for its commitment to sustainability, being named one of the Top 50 Sustainable Design Firms by Architect magazine and receiving accolades for its high-performance design solutions. The firm actively engages in projects that not only meet functional requirements but also contribute positively to the environment and community, showcasing their dedication to responsible design practices.

17. Morgan Lovell

• Website: morganlovell.co.uk
• Ownership type: Private
• Headquarters: London, England, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 99%
• Founded year: 1977
• Headcount: 201-500
• LinkedIn: morgan-lovell

Morgan Lovell, based in London, is a private company specializing in office design and fit-out services. With a workforce of around 219 employees, they have been operational since 1977, providing a range of solutions that include office interior design, workplace consultancy, and science & research fit-out. The company caters primarily to businesses and organizations looking to improve their work environments. Morgan Lovell is known for delivering customized design and construction services that align with contemporary workplace requirements. Their portfolio includes various projects that highlight their expertise in creating functional and aesthetically pleasing office spaces. They have also received recognition for their work, including awards for specific projects, which underscores their active role in the industry.

18. RSP Architects

• Website: rsparch.com
• Ownership type: Private
• Headquarters: Minneapolis, Minnesota, United States (USA)
• Employee distribution: United States (USA) 90%, India 6%, Other 3%
• Founded year: 1978
• Headcount: 201-500
• LinkedIn: rsp-architects

RSP Architects, founded in 1978 and based in Minneapolis, Minnesota, is a private architecture and design consultancy. The firm employs between 201 and 500 professionals and operates multiple offices across the United States and in India. RSP Architects offers a comprehensive range of services, including architecture, interior design, engineering, and urban planning. They cater to a wide array of clients, from Fortune 100 companies to innovative startups and non-profits. The firm is particularly noted for its commitment to sustainability, ensuring that their designs not only meet client needs but also contribute positively to the environment. RSP Architects has built a reputation for creating functional and innovative spaces, with a focus on enhancing user experience and fostering collaboration in workplace settings. Their work spans various sectors, including corporate, healthcare, education, and retail, showcasing their adaptability and expertise in different design challenges.

19. Gemaco Interiors Office Fitout and Furniture Abu Dhabi and Dubai

• Website: gemacointeriors.com
• Ownership type: Family Owned
• Headquarters: Abu Dhabi, Abu Dhabi, United Arab Emirates (UAE)
• Employee distribution: United Arab Emirates 100%
• Founded year: 1984
• Headcount: 51-200
• LinkedIn: gemaco-interiors

Gemaco Interiors Office Fitout and Furniture, based in Abu Dhabi and Dubai, is an interior design firm that specializes in design consultancy, interior fitout, and furniture supply. Founded in 1984, the company has built a solid reputation over the past four decades, serving a wide range of clients from various sectors, including aviation, banking, education, and healthcare. With a workforce of around 71 employees, Gemaco focuses on creating functional and aesthetically pleasing workspaces. They have successfully completed numerous projects, totaling over 700,000 square meters of built space. Their approach combines innovative design with practical solutions, ensuring that each project aligns with the client's needs and enhances workplace productivity. Gemaco Interiors is recognized for its commitment to quality and customer satisfaction, reflected in their impressive client feedback ratings.

20. Space

• Website: spacesolutions.co.uk
• Ownership type: Private
• Headquarters: Aberdeen, Scotland, United Kingdom (UK)
• Employee distribution: United Kingdom (UK) 93%, India 3%, Other 3%
• Founded year: 1997
• Headcount: 51-200
• LinkedIn: creategreatspace

Space Solutions, founded in 1997 and based in Aberdeen, Scotland, is a consultancy and design company that specializes in office design, fit-out, and facilities management. With a workforce of 51-200 employees, the company has built a solid reputation for delivering innovative workplace solutions. They provide a wide array of services, including workplace consultancy, architecture, interior design, and facilities management, catering to businesses across various sectors. Space Solutions emphasizes the importance of creating inspiring and effective work environments, ensuring that client needs are met throughout the project lifecycle. Their approach integrates technical understanding with creativity, allowing them to unlock the potential of workplace spaces. The company has worked on numerous projects for both public and private organizations, demonstrating their capability to handle diverse client requirements. They are also committed to sustainability, incorporating eco-friendly practices into their design processes.

21. Vocon

• Website: vocon.com
• Ownership type: Private
• Headquarters: Cleveland, Ohio, United States (USA)
• Employee distribution: United States (USA) 100%
• Founded year: 1987
• Headcount: 201-500
• LinkedIn: vocon

Vocon is an architecture and design consultancy based in Cleveland, Ohio, with a secondary office in New York City. Established in 1987, the firm specializes in creating work environments that resonate with the identity and values of its clients. Vocon offers a comprehensive range of services, including architectural design, strategic planning, and interior design, tailored to meet the unique needs of corporate clients. The firm prides itself on its collaborative approach, ensuring that each project reflects the client's vision and enhances their operational effectiveness. Vocon has received numerous accolades for its work, including recognition as one of the top architecture firms and awards for its innovative designs. The company is also committed to sustainability, with many of its projects achieving LEED certification. As a woman-owned business certified by the Women’s Business Enterprise National Council (WBENC), Vocon emphasizes inclusivity and diversity within its team and projects.

Office Interior Design Insights: Key Companies

Company	Headquarter	Size	Founded	Ownership
IA Interior Architects	San Francisco, California, United States (USA)	501-1000	1984	Private
Id21	Singapore	51-200	1996	Private
tp bennett	London, England, United Kingdom (UK)	201-500	1921	Private
Unispace	Australia	501-1000	2010	Private Equity
Perkins&Will	Chicago, Illinois, United States (USA)	1001-5000	1935	Private
Op	Reading, England, United Kingdom (UK)	51-200	1988	Private
Space Matrix	Singapore	501-1000	2001	Private
Sheppard Robson	London, England, United Kingdom (UK)	201-500	1938	Private
M Moser Associates	Hong Kong S.A.R	1001-5000	1981	Corporate
Oktra	London, England, United Kingdom (UK)	51-200	1995	Private
STUDIOS Architecture	San Francisco, California, United States (USA)	201-500	1985	Corporate
Gensler	San Francisco, California, United States (USA)	5001-10000	1965	Private
Db&b	Singapore	201-500	1996	Private
ZIKZAK Architects	Kyiv, Kyiv, Ukraine	11-50	2015	Private
TPG Architecture	New York, New York, United States (USA)	51-200	1979	Private
RMW architecture & interiors	San Francisco, California, United States (USA)	51-200	1970	Private
Morgan Lovell	London, England, United Kingdom (UK)	201-500	1977	Private
RSP Architects	Minneapolis, Minnesota, United States (USA)	201-500	1978	Private
Gemaco Interiors Office Fitout and Furniture Abu Dhabi and Dubai	Abu Dhabi, Abu Dhabi, United Arab Emirates (UAE)	51-200	1984	Family Owned
Space	Aberdeen, Scotland, United Kingdom (UK)	51-200	1997	Private
Vocon	Cleveland, Ohio, United States (USA)	201-500	1987	Private

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