Date Posted: 03.23.2026
Mithun is honored to be featured as a Top 100 Giant of Design by Interior Design Magazine. This is the 49th year of the Giants program, an annual ranking of top United States design firms based on reported interior design fees.
Mithun debuted on the list as #82, with 65 interior design professionals and interior design fees of $13.5 million.
Interior design plays an essential role in our integrated design process. Our team is keenly focused on the human scale: how people move and interact, how the physical environment affects happiness and wellbeing, and how the essence of place and materiality communicates identity through experience. Mithun’s interior design work has been recognized with numerous peer and industry awards, including the 2026 IIDA Northern California Long View Award for sustainable achievement at Kapuso at the Upper Yard. We are steadfast in our commitment to advancing the field of interior design through innovation, collaboration and a human-centered approach. Mithun’s mission and interior design practice for decades. Wherever possible, interior environments prioritize natural materials and exposed structure without applied finishes, delivering biophilic benefits to humans and eliminating the carbon impact of additional materials. We hope sustainable, resilient and durable products will continue to become a more economical option as well as the right philosophical decision for the world.
ENVIRONMENTS THAT WELCOME
Our interior design practice works on a wide variety of scales and project types. Cross-pollination between teams and project types leads to new discoveries and enhances our ability to create immersive environments that serve our clients and communities.
As Mithun associate principal Annie Rummelhoff shared with Interior Design, “A growing trend is the influence of hospitality design beyond traditional settings. Workplaces, residential developments and mixed-use environments increasingly adopt hospitality principles to create comfort and a sense of belonging, a blending of typologies that is expanding what hospitality means. Hospitality spaces are also taking on a broader social role. Successful design in this market balances storytelling, innovation and practicality to create spaces that feel distinctive, meaningful and enduring.”
Recently featured in Architectural Record, the Museum of Pop Culture Café and Lounge Renovation highlights the power of reimagined interior spaces to extend the museum’s role as a cultural third space. Sinuous forms and a simplified palette create an elevated and more accessible visitor experience.
HEALTHY MATERIALS
One example of Mithun’s commitment to reducing the health and environmental impacts of building materials is our Healthy Materials Guideline, which outlines clear internal boundaries to guide project teams identify and avoid critical chemical classes of concern. A significant milestone embodying this commitment is our Pier 56 Office in Seattle, which achieved Living Building Challenge (LBC) Petal Certification, becoming the first non-pilot tenant improvement project to be certified under the LBC 4.0 framework. Focused on the Materials, Equity and Beauty petals, the project avoided 19 Red List chemical classes known to pose serious risk to human health and the ecosystem, sent advocacy letters to request and advance material disclosure and transparency, and prioritized material reuse and regional sourcing.
LEARN MORE
Explore the full Interior Design Giants coverage. To learn more about Mithun’s interior design practice, explore our portfolio.
