William Kenzo Nakamura Federal Building

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William Kenzo Nakamura Federal Building

178,386 sf | Seattle, Washington | Infrastructure & Public Works | Specialty Metals

The Nakamura U.S. Courthouse was the west’s first federal building designed specifically for federal courts. The neo-gothic structure, originally opened in 1940, was listed on the National Register of Historic Places in 1980.

Hermanson Company provided Design-Build mechanical construction for the complete renovation of the structure. The project includes complete seismic upgrades to current standards, all new building systems (HVAC, plumbing, fire protection, etc.), rehabilitation of three of the five historic courtrooms to accommodate the Appeals Court. The remaining two courthouses were converted into a law library reading room and a large conference room. Judges’ chambers were customized to meet the unique needs of each federal judge, and 21,000 sf of tenant improvements were accommodated on the lower three floors.

Hermanson’s Specialty Metals team designed, fabricated and installed a custom-made stair rails for judges’ chambers and the stainless-steel lobby display case for historic recognition of WWII Medal of Honor awardee, Seattle-native Private First-Class William K. Nakamura.


  • Best Public Building, Northwest Construction Best of 2009


Completed in 2008