We Are

Based on a sound history of providing critical professional services to municipal entities and other high profile private clients, Architect Mason Kirby Inc was founded in 2005 with the goal of providing unexpected value to our clients through excellence in client service and design.

Architect Mason Kirby Inc is a full service architectural planning and interiors firm that is a member of the American Institute of Architects and the US Green Building Council. Principals are LEED Accredited Professionals with a passion for developing and demonstrating sustainable design and building practices. The practice utilizes digital design and visualization tools as well as external peer review processes to contribute to project quality, accuracy, and client comprehension.

The core practice remains intimate in size, diverse in relevant project experience, and functionally scalable to accommodate critical deadlines, diverse locations and unanticipated project scopes. Collaborative relationships with design offices in Beijing and London are utilized to allow for a 24 hour working-world-clock made of three individual work days separated only by space and time. This allows for an unprecedented leveraging of time, space, and experience.


Mason Kirby

Mason Kirby graduated from Columbia College with a B.A. in Urban Studies in 1994 and began practicing architecture after receiving a master’s degree from Yale’s School of Architecture in 1998. He has completed projects for Crystal Dynamics, Institute for One World Health, Microsoft (Microsoft Silicon Valley Campus), Philips Semiconductor, Vizeum, and numerous private residences in California and abroad.

Mason served as an executive member of the Board of Directors for the Columbia College Alumni Association, is a US Green Building Council LEED Accredited Professional and has previously served as an advisory member of the State Agency Environmental Task Force for Washington State. He has collaborated with the University of San Francisco’s Gellert Foundation Family Business Center and the San Francisco chapter of the American Institute of Architects to publish a monograph on contemporary live/work enterprise housing solutions. Mason has served as a member of the Architecture Faculty at University of San Francisco, and served as a Senior Board Advisor for Scholarship and Grant Making to Plant Now.

Jamie Pratt has a broad range of experience in the practice of architecture. A graduate of Clemson University in South Carolina, she received a master’s degree from California College of Arts University in San Francisco, CA. Her work has been featured in the Piccolo Spoleto Festival, she was a finalist to the Archibald Rutledge Art Scholarship, and is a CCA Jury Prize Winner for a Team Design-Build. Her experience in all aspects of architecture makes her a valuable and knowledgeable addition to any team.

Gabriel Guerriero

Gabriel Guerriero received his B.A. from the University of California in Santa Cruz and attained his master’s in Architecture from California College of the Arts. He was awarded the CCA Architecture Book Award for the 1st year outstanding achievement in design, and was again nominated for the CCA his 2nd year. He was a M. Arch Nominee for the Architecture Jury Prize in 2010, and received a Class Award for Rapid Type Advanced Studio in 2011, with an Honorable Mention for the Thesis Award in 2012.

Gilly Youner received her master’s in architecture from Columbia University School of Architecture, Planning and Preservation in 1987. She then went on to join Kutnicki Bernstein Architects, where she developed a reputation for master planning commercial and residential spaces that balanced function, form and budget. For the Williamsburg Early Intervention Childhood Development Center, Gilly designed a new school building with the primary focus of creating an accessible space for children with special needs—the building had the latest in sensory integration equipment, furniture and technologies. For Gold & Wachtel Law Office, Gilly communicated the prestige of the firm with a grand staircase that connected the two floors. Her design also improved client communications with conference zones, and employee retention with custom millwork workstations. For Cole Haan Shoes New York, she worked with their head designer to design their headquarters and showroom to accommodate more employees and improve sales, including a staircase which doubled as a runway for fashion shows.

In 2017, Gilly and her husband moved to San Francisco and quickly fell in love with the city’s architectural charm and pulse. Through a friend, she was introduced to the owner of Britex Fabrics, who was interviewing architects who could marry elements of their 60-year store with their new retail space in Union Square. Before the project could begin, Gilly needed a California architect of record and partnered with Architect Mason Kirby. Gilly has now settled in as a permanent member of the team and is lending her 30 years of design experience for projects of all scope and scale.