Partners: network
Charles Theodore Berger Sr., George Francis Hellmuth, George Edward Kassabaum, Edward King McCagg II, Sandra Mendler, Gyo Frederick Obata, William Valentine
Active 1955 - present
This was the successor firm to the Saint Louis, MO-based, Hellmuth, Yamasaki, and Leinweber (1949-1955); Hellmuth, Obata and Kassabaum was also headquartered in Saint Louis; in 1963, the HOK firm operated an office in San Francisco, CA. In 2006, HOK had offices open in the following U.S. cities: Atlanta, Chicago, Dallas, Houston, Los Angeles, Miami, New York, Orlando, Saint Louis, San Francisco, Tampa, and Washington, D.C. It operated offices in London, UK, Toronto, ON, Tokyo, Hong Kong, and Mexico City abroad. In 2011, the firm was known as "HOK Group, Incorporated."
PCAD id: 749
| Name | Date | City | State |
|---|
| 2000 Pennsylvania Avenue, Office Building, Washington, DC | | | |
| 550 North Brand Boulevard Building, Glendale, CA | 1987 | Glendale | CA |
| Adobe Systems Incorporated, Corporate Headquarters, San Jose, CA | 1996-2003 | San Jose | CA |
| City and County of San Francisco, Public Library (SFPL), Main Library #5, Civic Center, San Francisco, CA | 1915-1917 | San Francisco | CA |
| City of Manhattan Beach, Police and Fire Departments Headquarters, Manhattan Beach, CA | 2003 | Manhattan Beach | CA |
| County of Los Angeles, General Hospital, 2051 Marengo Street, Northeast Los Angeles, Los Angeles, CA | 2008 | Los Angeles | CA |
| Fairmont Hotel, San Jose, CA | | San Jose | CA |
| International Business Machines (IBM) Corporation, Office Building, Los Gatos, CA | 1964 | Los Gatos | CA |
| King County, Department of Adult and Juvenile Detention, Norm Maleng Regional Justice Center, Kent, WA | 1995-1997 | Kent | WA |
| Levi Strauss and Company, Headquarters, Embarcadero, San Francisco, CA | | San Francisco | CA |
| Long Beach Aquarium of the Pacific, Long Beach, CA | | | |
| Petco Park, San Diego, CA | 2000-2004 | San Diego | CA |
| Sainte Claire Club, Downtown, San Jose, CA | 1893-1894 | San Jose | CA |
| Saks Fifth Avenue Department Store, Union Square, San Francisco, CA | 1981 | San Francisco | CA |
| Sohio Alaska Petroleum Company Headquarters, Anchorage, AK | | Anchorage | AK |
| Superior Court of California, County of Santa Clara, Hall of Justice #2, San Jose, CA | 1988-1991 | San Jose | CA |
| Wells Fargo Center, Sacramento, CA | 1989-1992 | Sacramento | CA |
| Xerox Corporation, Palo Alto Research Center (PARC), Palo Alto, CA | 1970 | Palo Alto | CA |
American Architects Directory 1970, 3rd edition: 474, 1970. American Architects Directory 1970, 3rd edition: 395, 1970. American Architects Directory 1970, 3rd edition: 674, 1970. "Titans Maintain Lead While Industry Suffers", Architectural Record, 199: 7, 24, 07/2011. "Architects in the News: Kling, Obata, and Kump Honored", Architectural Record, 133: 2, 244, 02/1963. "Fairmont Hotel, San Jose, California, USA, 1987", Architecture + Urbanism (A + U) Extra Issue, 12: 92-97, 12/1990. Semallie, Peter H. , Smith, Peter H., "University Incorporates Old Buildings into New Speculative Office Venture", New Construction for Older Buildings, 163-165, 1990. Semallie, Peter H. , Smith, Peter H., "New Corporate Offices in San Francisco", New Construction for Older Buildings, 174-177, 1990. Delahanty, Randolph, Preserving the West, 59, 1985. "On the Move", Seattle Times, E4, 07/28/2008. "Recent works by Hellmuth, Obata and Kassabaum", Space Design, 145: 4-56, 1976-09. Lockwood, Charles, "Green retrofits", Urban Land, 67: 7, 78-83, 2008-07. Lockwood, Charles, "Adobe's green retrofit project gains Platinum for three buildings", Urban Land, 66: 11-12, 27, 2007-11/12. 
