Chambers Mansion, Historic residence in Pacific Heights, San Francisco, US

Chambers Mansion is a residence featuring Queen Anne Victorian style with Gothic and Tuscan design elements visible on its exterior. The building sits between Laguna and Buchanan streets and exemplifies the grand residences constructed in this neighborhood during the 1880s.

The house was built in 1877 for R. C. Chambers (Robert Craig, 1832–1901), a Utah mining tycoon, banker and politician, and his wife Eudora T. Tolles. Architect Julius Case Mathews designed it in Queen Anne Victorian style with Gothic and Tuscan details. After Chambers died in 1901 with no direct heirs, the house passed to relatives, though accounts differ on whether it was his sister Ada or two nieces. In 1917 Houghton Sawyer added an addition.

The house is the subject of a widely repeated but false tale: niece Claudia Chambers supposedly lived here with her sister, the two fell out, and Claudia was sawed in half in a 1917 "farming accident"; her ghost is said to haunt the building. City records show no Claudia Chambers ever lived there. CBS News named it one of the United States' "scariest haunted houses" in 2010.

The mansion was converted into two private townhouses in 2000, so it is not open to the public and has no hotel or tour access. Visitors can view the Queen Anne facade with Gothic and Tuscan details from Sacramento Street in Pacific Heights, between Laguna and Buchanan streets.

The most popular ghost story claims Claudia Chambers was sawed in half in a 1917 farming accident and now haunts the house, but city records show no one by that name ever lived there. CBS News named the mansion one of the United States' scariest haunted houses in 2010.