The district is roughly enclosed by La Loma Road to the north, Avenue 64 to the east, Poppy Peak Drive to the south, and the Pasadena city limits to the west.

The district is accessed via Poppy Peak Drive, which intersects La Loma Road at the foot of the mountain and connects the other three streets.

30 of these are Modernist homes which are considered contributing to the district's historical significance, while the remainder are either newer buildings, empty lots, or representative of other styles.

Two 1930s designs by Harwell Hamilton Harris are located at 1642 Pleasant Way and 1444 Poppy Peak Drive; the latter house was moved to the district in 1951 by architect Leland Evison.

Several architects associated with the University of Southern California School of Architecture designed houses in the district, including James Pulliam, the three partners of Buff, Straub and Hensman, Lyman Ennis, Kenneth Nishimoto, and the aforementioned Leland Evison.