The complex was built in 1929 by Julius Rosenwald and his nephew, architect Ernest Grunsfeld (who also designed the Adler Planetarium, at the behest of Rosenwald's brother-in-law, Max Adler). Covering a square block, the buildings enclosed an enormous central landscaped courtyard. Rosenwald planned the development of 421 units to provide sound housing for African Americans and to relieve the tremendous overcrowding due to Chicago's pervasive racial segregation. The development also included 14 stores along the 47th Street side of the property, four of which were occupied by black-owned businesses, and a nursery school. Rosenwald invested $2.7 million in the project, receiving only a 2.4 percent return during the first seven years.