Garbutt House, Historic mansion in Silver Lake, Los Angeles, United States.

Garbutt House is a 20-room concrete residence built on a hilltop overlooking Silver Lake reservoir in Los Angeles. The structure features reinforced steel elements, bronze window frames, and marble flooring throughout its interior spaces.

Frank A. Garbutt, an inventor and film industry entrepreneur, commissioned this residence between 1926 and 1928. The building was designed with innovative fire safety features that reflected emerging construction practices of the era.

The estate's name links Frank A. Garbutt to the Hathaway family of his daughters, who kept living there after his death in 1947; one unmarried daughter stayed until the 1960 sale. Garbutt worked on inventions at the house, building race cars, devising a soapless detergent and trying to make a better chewing gum. The estate has served as a film location since the silent era.

Garbutt House is a private residence and cannot be visited; it is best seen from the public streets of the Silver Lake hillside below, where the concrete mass rises 228 feet to its crest. The 1982 development of about 100 homes around it was likened to a village at the foot of the castle. Look for the giant raised middle finger sculpture added outside the front door.

The concrete foundation of the ground floor was poured continuously over a two-day session without interruption. This unusual construction method ensured a seamless structural base without visible seams or cracks throughout the foundation.