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Lisa Tharp is founder and principal of Lisa Tharp Design, an international design firm known for its clean-lined, artistic blend of classic and modern, a hand-crafted custom furniture line, and industry leadership in design practices that support wellness of people and our planet. Lisa Tharp Colors, a non-toxic designer paint collection for ECOS Paints, launched in 2021.


With studio presence in Boston, New York, Montreal and Auckland, Lisa Tharp Design transforms luxury spaces in the city, country and on the water. Beautiful, inventive environments enhance architecture, connect to a sense of place, and reflect and support the personality, lifestyle aspirations and well-being of those who inhabit them.


The firm’s work has been featured by Architectural Digest, ELLE Decor, LUXE, House Beautiful, international publications, books, and by This Old House television productions. Lisa Tharp Design has garnered a number of honors, including successive Bulfinch Awards from the Institute of Classical Architecture & Art, EcoHome Award for Tharp’s "Concord Green Healthy. Home" which modeled healthy and sustainable building practices, Luxe Gold List, Best of Boston by Boston Home magazine, and Metropolis magazine's Planet Positive Award. Tharp was inducted into the New England Design Hall of Fame in 2021.


"Tharp allows spaces and people rather than a particular style to drive her work."
- Design New England magazine


1. Define

The dream is defined. Our proprietary and fun discovery process uncovers deep learning about client goals, preferences and requirements. Project Scope, Budget, and Timeline are established. If construction is involved, our design/build team

is assembled, or we work with client’s own teams.

2. Plan

The dream is envisioned. Concepts, Plans and Specifications are defined for every detail.  This phase may include space planning, floor plans, interior elevations, kitchens, baths, cabinetry, architectural features, materials, as well as furnishings. Client input and approval complete each milestone.

3. Create

The dream becomes reality. Rooms take shape, are finished and furnished. From construction and production to installation of the last work of art, our team orchestrates the many talented specialists to bring the plan to life.


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Alex MacMillan 

Sienna MacArthur

Alex collaborates closely with Lisa in leading creative development across the firm’s design projects and media content. Her Masters of Interior Architecture training enables her to digitally visualize and specify our concepts for clients and industry partners alike. Alex’s passion for design and remodeling started at a young age, watching her parents renovate over ten historic Maine properties. When not designing, Alex can usually be found somewhere outdoors, at a concert or hosting a dinner party.
Sienna brings organization and attention to detail to our creative development and implementation processes. With a French-American education, Sienna split her childhood between her family’s maple sugaring farm in upstate New York and Southern France. Her open-minded and unique approach to every design project stem from her international background and degree in art history. As a yoga teacher in her free time, Sienna’s passion for wellness and sustainability help inform her human-centered perspective to design. She is currently pursuing a Masters in Design for Human Health.
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Caitlin Manning

Caitlin's years of experience at a well-known architectural firm, along with studies in Hospitality and Graphic Design, poise her to deliver optimal communications at all points along the design continuum. Caitlin’s interests in Photography and Architecture stem from her early childhood years when given a camera and the experience to travel and see the beauty of the world. In her free time, Caitlin enjoys exploring new places, tasting new foods, and working on personal projects.


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