Andrea Keller is a licensed California architect with 25+ years of practice at the intersection of building science, sacred geometry, and human biology. She founded 4D Design on the premise that architecture is not a neutral force — that every material, proportion, and spatial system in a built environment is either supporting the people inside it or working against them.

Her work spans hospitality, luxury residential, wellness facilities, equestrian design, and sacred architecture, operating as architect, design-builder, and developer across California and nationally.

She holds a Bachelor of Arts in Design of the Environment from the University of Pennsylvania and a graduate degree in architecture from UCLA, and has taught architectural history, theory, and design at USC School of Architecture and Otis College of Art and Design.

AK's research into fractal geometry, resonance, and the neurobiological impact of the built environment has taken her work well beyond conventional practice. She is a sought-after speaker at architecture, design, and wellness conferences — translating complex principles of geometry and material intelligence into frameworks that shift how designers, developers, and health professionals think about space.

She is also the founder of Star Tile, aJoshua Tree-based ceramic company whose collections are derived from fractal geometry and natural branching forms, designed at the threshold of architectural software and traditional craft.

4D Design is based in Joshua Tree, CA.