Csimplicity interior design firm is an upscale interior design firm in Los Angeles, California. Specializing in creating tailored custom residential and commercial spaces.Catherine Chen Gallagher is the Principal founder of Csimplicity Design. Within a decade, Catherine’s refined combination of clean-lined and relaxed interiors reveal elements ranging from vintage extravagance to modern classicism. On her projects, Catherine seeks to integrate her client’s unique needs with her extensive knowledge of design history and deep relationships within the industry.