Grunley Construction Company, Inc. is a full-service, award-winning construction firm with expertise in high-profile, complex projects for both public and private sector customers. Headquartered in the Washington metropolitan area, Grunley specializes in building new facilities as well as additions, renovations, restorations and modernizations of large-scale commercial, institutional and government buildings, including offices, universities/schools, courthouses, laboratories, data centers, performing arts centers, embassies, monuments and museums. Our annual revenues are in excess of $400 million and our bonding capacity is $1 billion aggregate.


In 1955, the general contracting firm of Grunley, Walsh and Blanche, Inc. was founded by Martin Grunley, William Walsh and Thomas Blanche. In 1961, the company was renamed Grunley Walsh Construction Company, Inc. Kenneth Grunley, son of Martin Grunley, joined the firm in 1974. In 1986, Ken Grunley became a Vice President of the firm and two years later, in 1988, Grunley Construction Company, Inc. was formed. Currently, Ken Grunley serves as President and Chief Executive Officer.


  • Ranked #4 on the Washington Business Journal's (WBJ) "Largest Interior Construction Firms" (2018)
  • Ranked #10 on the WBJ's "Largest General Contractors" (2018)
  • Ranked #44 on Engineering News Record's (ENR) "Top Green Contractors" in the nation (2017)
  • Ranked #3 on WBJ's "Largest Interior Construction Firms" (2017)
  • Ranked #10 on WBJ's "Largest General Contractors" (2017)
  • Ranked # 33 on WBJ's Largest Private Companies (2017)
  • Ranked #34 on WBJ's "Top Private Companies" (2016)
  • Ranked #43 on ENR's "Top Green Contractors" in the nation (2016)
  • Ranked #18 on ENR Mid-Atlantic's "Top Contractors" (2016)
  • Ranked #2 on ENR Mid-Atlantic's "Top Contractors in Washington, D.C." (2016)
  • Ranked #4 on ENR Mid-Atlantic's "Top Contractors in Religious and Cultural Facilities" (2015) 
  • Ranked #5 on ENR Mid-Atlantic's "Top Contractors in Government Service Buildings" (2015) 
  • Ranked #5 on ENR Mid-Atlantic's "Top Contractors in Commercial Buildings" (2015)