Case Study House (CSH), a residential building program developed in 1945, was a joint effort by Arts & Architecture Magazine and the architectural firm of Charles and Ray Eames. The program sought to design and construct modernist, affordable homes for the post-war era. The project was under the direction of John Entenza, the editor of Arts & Architecture Magazine.

The primary goal of the project was to provide affordable housing for middle-class families. Each house was designed to incorporate modernist principles with affordable materials and construction methods. This was to be done in an effort to reduce the cost of construction and the total cost of ownership. As a result, the designs featured open plans with large windows and outdoor living spaces, as well as concrete slab foundations and flat roofs.

Each Case Study House was designed to be adaptable to different climates and sites, while simultaneously incorporating modernist principles. This allowed for a range of designs that could be tailored to specific locations and budgets. Many of the houses have gone on to become iconic examples of mid-century modern design.

The Case Study House program has had a lasting influence on mid-century modern architecture, inspiring a range of designs from single-family homes to larger multi-unit structures. The project has also been credited with introducing a new level of experimentation, innovation, and affordability in residential architecture. Today, the legacy of Case Study House lives on through its influence on contemporary architecture and design.