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Knoll Designer Donald Knorr

DONALD KNORR, FAIA (1922-2003)

Born in Chicago, Knorr decided at 16 he was going to be an architect, attending the University of Illinois.  He served in the Navy in WWII as an officer in the Photo Intelligence Service, studying aerial photos of potential bombing sites. After the war, he returned to the University for a BA in Architecture in 1947 and a Masters from Cranbrook.  Eero Saarinen became his mentor and employer.  At Saarinen's urging, Knorr submitted a steel chair design to a New York Museum of Modern Art competition and won his first international first-place award.  Knoll started producing it in 1950.  In 1949, Knorr moved to San Francisco to work for SOM and went out on his own two years later.  


1956 - The Robert and Betty Hilmer House, 1 Mercedes Lane, Atherton CA. Similar to the Case Study #19A House. Deeded to heirs.  Sold in 2020 to the George Hensler Trust.




Year unknown - aka Case Study House 19A.  Unbuilt.  Designed for a young couple and their son, this was the first home in the Case Study program to be located outside southern California. Although the house was drawn all the way up to its construction documents, it was never built due to the client’s financial difficulties. Instead, Knorr built  the Hilmer House nearby with the same general plan.



1978 - The Portola Valley Ranch project, which capitalized on the area's natural beauty and open space, keeping views of the valleys clear and using only indigenous plants in the landscaping.