Heather Ault

Founder & Principal Designer

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Heather Ault is the Founder and Principal Designer of Del Sur Designs, a San Diego–based interior design studio specializing in thoughtfully planned residential and commercial interiors.

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With more than two decades of experience and a foundation rooted in formal design training, Heather approaches each project with a disciplined understanding of space, proportion, and architectural intent. Her work is guided by the belief that truly successful interiors are built on clarity of planning, refined materiality, and a deep respect for how people move through and experience space.

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Heather leads projects from concept through completion, providing clear direction and thoughtful oversight at every stage. Her process balances creative vision with technical precision, resulting in interiors that feel cohesive, intentional, and enduring. Rather than following trends, she prioritizes designs that age gracefully — visually, functionally, and emotionally.

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Under her leadership, Del Sur Designs has completed a diverse portfolio of projects throughout California, collaborating closely with architects, builders, and artisans to deliver spaces that are both elevated and highly functional. Heather’s work is characterized by restraint, attention to detail, and an ability to translate complex ideas into environments that feel effortless and lived-in.

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Clients are drawn to Heather for her calm authority, strategic thinking, and ability to guide complex decisions with confidence and discretion. Her design philosophy is rooted in creating spaces that support daily life while expressing a refined, timeless sensibility.