The murder house is a real location at 1120 Westchester Place in Los Angeles known as the Rosenheim Mansion. The house was built in 1908 by architect Alfred Rosenheim who was one of Los Angeles's most influential architects during the early 1900s. He built it as his own residence. The house is 3 story over 10,000 square feet, 6 bedrooms, 5 bathrooms, and sits on almost an acre.
The house scenes in the pilot episode of "American Horror Story" as well as some of the current exterior scenes were filmed on location at the Rosenheim Mansion,Some of the house's interiors were replicated on set.
What we know about who owned Murder House when:
Built the house in 1922-1926(?): Dr. Charles Montgomery and his wife Nora
1947- single dentist Dr. David Curan
1978 - empty
19??-1983 - Owners Are Hugo and Constance Langdon
Chad and Patrick
Ben and Vivien Harmon