William R. Thorsen House
|Location:||2307 Piedmont Ave, Berkeley, California|
|Area:||0.4 acres (0.16 ha)|
|Architect:||Greene & Greene|
|Architectural style:||Ultimate bungalow, American Arts and Crafts Movement|
|Added to NRHP:||November 20, 1978|
|Designated BERKL:||December 15, 1975 |
The William R. Thorsen House, often referred to as the Thorsen House, was built in 1909 in Berkeley, California by William Randolph and Caroline Canfield Thorsen. Designed by Henry and Charles Greene, of the renowned Pasadena firm of Greene & Greene, in the American Craftsman style of the Arts and Crafts Movement. The House is considered as the last of four Greene & Greene designed ultimate bungalows and is the only one located in Northern California.
William Thorsen was a lumber baron from Michigan who retired to California and purchased a lot in Berkeley. His wife, Caroline, was the sister of Nellie Canfield Blacker of the Robert R. Blacker House. Inspired by the Greene brothers' work and also the wife and daughter of lumbermen, she too wanted a wooden house like her sister's.
The entry hall is paneled in teak while the living and dining rooms are paneled in Honduras Mahogany with ebony pegs covering the screws. The fireplace in the living room is surrounded with mauve Grueby tiles. The front door contains leaded art glass in the pattern of a gnarled grape vine, executed by Emil Lange. The Greenes were commissioned to make furniture originally only for the dining room, but they were later called back to make more pieces.
Restoration and tours 
The house is currently owned by the Sigma Phi Society, which is raising funds for an extensive $10 million restoration and seismic upgrade. The active members of the Sigma Phi Society are students at U.C. Berkeley and are primarily responsible for upkeep of the house under the guidance of architectural experts. Students living in the house have produced some replica furniture.
The Thorsen House can be toured throughout the week on an informal basis. Visitors should contact the Thorsen House via its webpage or simply knock on the door.
- "National Register Information System". National Register of Historic Places. National Park Service. 2010-07-09.
- "Berkeley Landmarks::Landmarks #1-100". Berkeley Landmarks. Berkeley Architectural Heritage Association. 2010-06-06.
- http://www.thorsenhouse.org/ (Sigma Phi Society) Official Thorsen House Website. access date; 1/4/2010.
||This article needs additional citations for verification. (August 2008)|
- Official Thorsen House Website (Sigma Phi Society - Tours)
- Greene and Greene Virtual Archives Website
- Official Thorsen House Restoration Campaign Website
- Berkeley Landmarks Website