The Gomez residence was the home of Mrs. Gomez, Emmett Brown's landlady when he lived in Pasadena, California in 1943.
During his tenure as a professor at the California Institute of Technology, Doc had heard of a top secret project to benefit the war effort. Doc had managed to convince Robert Millikan, the president of Caltech, to arrange an interview with Major General Leslie Groves and Vannevar Bush.
Doc's apartment was a mess, so he arranged to use the Gomez residence for his interview. The two men realized that the house did not belong to Doc, yet still awarded him a position on the Manhattan Project.