About Arntz Interiors

A California Interior Design Firm

Arntz Interiors is a full service residential interior design firm based in Marin County, Ca. As an interior design firm in California, our work blends innovation with Bay Area style. Our projects include everything from a whole home renovation or new build to a one room refresh. Our expertise encompasses all phases of the design process, from concept to the finished product. We work closely with architects, contractors and vendors to bring our projects to life across the Bay Area and beyond.

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Bedroom bedside table styled by Arntz Interiors featuring layered blue textiles, a ceramic lamp, and soft coastal-inspired accents.

Our Philosophy

Our mission is to create beautiful, curated and  approachable spaces through a thoughtful, process driven design experience. By combining traditional elements with the demands of modern day living, we produce designs that carefully consider our clients’ needs for their space.

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Interior designer at Arntz Interiors standing in a light-filled kitchen, styled with natural textures, woven lighting, and coastal-inspired details.

Meet Sara

Sara Arntz is the founder and principal designer of Arntz Interiors. A Marin County native with deep roots in the Bay Area, Sara’s journey into design was a natural progression, influenced by her family’s background in construction.

Armed with a Master's degree from the Academy of Art University in San Francisco, Sara honed her craft working with renowned design firms for over a decade. The skills she has gathered from working alongside such talented designers, contractors and architects make her the designer she is today.

Sara holds citizenship in both the UK and the US, frequently drawing inspiration from her time spent across the pond. She resides in Larkspur with her beloved pup, Winnie. 

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