Sonja Trauss started the volunteer collective "SF BARF," the San Francisco Bay Area Renters Federation, in 2014. By 2017, SF BARF split into several organizations, YIMBY Action and YIMBY law the largest among them. Currently Sonja is the Executive Director of YIMBY Law, which works in concert with YIMBY Action and their 80 chapters in 26 states to facilitate community organizing for housing proposals and pro-housing local and state policy. YIMBY Law also supports educational programming, reports on housing policy impact and enforces state housing laws by suing cities, as necessary. Sonja received her Bachelor of Arts in Philosophy from Temple University, and holds a Master's Degree in Economics from Washington University in St. Louis.

