The Ennis-Brown House by Frank Lloyd Wright, located at 2655 Glendower Avenue, Los Feliz District in Los Angeles, CA. It was used for The House on Haunted Hill (1959) residence, and can be seen in a host of other films, including Blade Runner (1982). It is apparently for sale. More here and a terrific slideshow at the LA Times here.
Grim, isn’t it?
I kind of like it.