Launched in 1945 by John Entenza’s Arts + Architecture magazine, the Case Study House program commissioned architects to study, plan, design, and ultimately construct houses in anticipation of renewed building in the postwar years.

While the Case Study House program did not achieve its initial goals for mass production and affordability, it was responsible for some of Los Angeles’ most iconic and internationally recognized modern residences, such as the Eames House (Case Study House #8) by Charles and Ray Eames and the Pierre Koenig-designed Stahl House (Case Study House #22), famously photographed by Julius Shulman.

After a decade-long effort, L.A. Conservancy’s Modern Committee succeeded in listing ten Case Study residences on the National Register of Historic Places. They were awarded a Governor’s Historic Preservation Award in 2013 for their work.

With an emphasis on experimentation, and a goal of promoting good, modern, affordable design for single-family homes, the program helped to disseminate the midcentury modern aesthetic through its thirty-five published plans. Of these, twenty-five houses and one apartment building were built in California and Arizona.

The program offered an unparalleled opportunity for commissions and publicity for established architects including Richard Neutra, J. R. Davidson, Sumner Spaulding, and William Wurster. It helped raise the profile of then-lesser-known designers including Craig Ellwood, A. Quincy Jones, Edward Killingsworth, Ralph Rapson, Eero Saarinen, and Raphael Soriano.

Thanks to the Los Angeles Conservancy Modern Committee, eleven Case Study House residences in Los Angeles, San Diego, and Ventura counties are now recognized as nationally historic. Ten are officially listed in the National Register of Historic Places, and an eleventh was deemed eligible for listing.

Few of the Case Study Houses currently have preservation protections, and some have been demolished or significantly altered. This proactive step recognizes the eleven nominated homes and raises greater awareness about the Case Study House program while providing a historic context for future designation of the remaining eligible properties.