Karin Payson


AIA, LEED AP Principal

Karin Payson is the principal architect of Karin Payson Architecture + Design (KPa+d), a design-oriented, San Francisco-based firm with projects completed throughout Northern California as well as Wyoming and New York.

At KPa+d, Karin has been engaged as an architect and interior designer in a wide variety of new buildings and substantial renovation projects for homeowners, public libraries, and various commercial and institutional clients. She brings a rich set of skills and interests to her work. Drawing, clothing design and fabrication as well as frequent travel in search of fresh experiences are essential to her practice as an architect and inform her continuing study of the characteristics of natural light and materials.

Before founding KPa+d in 1992, Karin’s professional experience included several years in the New York office of Hardy Holzman Pfeiffer Associates where, as a Project Architect, her work focused on the planning, programming and design of large-scale commercial buildings and adaptive re-use of historically significant buildings.

Karin holds degrees from Columbia University and UC Berkeley, and is a licensed architect in California and New York. Her work has appeared in several exhibitions and publications, including California Homes; Science & Spirit; Architectural Digest; San Francisco Chronicle Sunday Magazine; Sunset Magazine; The Sacramento Bee; The San Francisco Examiner Sunday Magazine; and The New York Times.



Project Manager

Joanne Ha has been with KPa+d since 2014, bringing a passion for community development through architecture and sustainable design.

Joanne’s sterling work ethic and intellectual curiosity have driven her accomplishments and life experience. Since joining KPa+d she has been the project designer and project manager on two new homes in California and New York State; one new public library and the renovation of another, and several major residential and commercial remodeling projects in the city of San Francisco.

Joanne grew up in South Korea where she completed her undergraduate degree in Architecture and served for two years as a Writer/Editor for “Concept” and “Contemporary Architecture” Magazines.  She moved to the United States in 2007 and has since completed an MS in Architecture at California Polytechnic State University in San Luis Obispo and published her thesis:  Integrated Senior Housing – A Living Prototype for Promoting the Interaction of All Generations.

In her spare time Joanne enjoys traveling throughout the world and the US, cooking, book editing, architectural photography, research and criticism.

Mary Sheffield


Project Manager

Mary Sheffield joined KPa+d in 2017 after a career path which took her from architecture into real estate development and sales, then back to architecture.

In Mary’s previous life in her native Colombia she ran her own design-build practice, an experience which gave her tremendous insight into the design and construction process and is serving her clients well in her work at KPa+d. She has proven to be a versatile designer and project manager in complex single-family residential renovations as well the remodeling of a 6-story San Francisco office building and various institutional projects.

Mary holds a BA in Architecture and Urban Planning from Universidad Pontificia Bolivariana in Medellín, Colombia. 

In addition to her strength as a designer, Mary is committed to listening to clients to understand their needs and wishes. She believes a home is a symbol of the spirit of its inhabitants. When not busy at work, Mary relaxes by drawing. Her beautiful sketches of nature and the built environment could easily fill a few books. She loves to travel with her husband, always bringing home design ideas and even flavors to experiment with in the kitchen.

Abigail Campion


Junior Project Manager

Abigail joined KPa+d shortly after completing her B.Arch at Syracuse University in the Summer of 2019.

As the most junior architecture staff in the office, Abigail has touched most of the projects we have worked on in the last few years. Her greatest achievements so far have been a significant involvement in a documents and modeling of two new homes on the boards, as well as managing the drawings for a variety of other projects. Before coming to KPa+d, Abigail worked in her school’s architectural library, interned for a color consultant and did sales and design at Galleria Tile. Her work history has informed her interest in design details and the client experience, which she has brought to her work with us.

Abigail grew up in the Bay Area and was happy to return here after 5 years of college in Upstate New York, where her thesis explored the films of Wes Anderson and the impact of architectural detail on memory. In her free time, you can find Abigail in the East Bay going to the movies, trying new restaurants or listening to one of almost a dozen favorite podcasts



Chief Morale Officer

Quin, a native New Yorker with roots in the Hudson Valley, joined KPa+d as an apprentice in Human Relations early in 2018. There, she quickly became skilled at the art of listening and collaborative communication with staff (with or without treats). And her unfailing knack for signaling the end of a workday – without smartphone or timepiece – did not escape the notice of her employer. Quin’s curiosity and nose for intuitive intervention in the workplace finally earned her the coveted post of Chief Morale Officer in August 2019. Her promotion was greeted with smiles (ours) and wags (hers).

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