Officials with the Parsons Corp. announced last week that the company will move its headquarters from Pasadena to Virginia in order to be closer to clients in the Washington, DC area.

According to a company spokesperson, Parsons corporate headquarters will be relocated “effective immediately” to a facility in Centreville, Virginia, about an hour’s drive from downtown Washington.

“Parsons’ position as a world leader in defense, intelligence and critical infrastructure is the result of more than seven decades of strategic planning and investment,” said Chuck Harrington, Parsons chairman and CEO in a prepared statement. “Our strategic actions over the past 10 years, including acquisitions, have led to the Washington metropolitan area having Parsons’ largest concentration of employees worldwide. The move of our corporate headquarters to the Washington area will support this concentration of employees in the region.”

Being in Northern Virginia, Harrington said, gives us more opportunities to be in the right places, at the right times, with the right people driving the future of our markets.”

According to the Los Angeles Times, the company already has 2,400 employees in Washington. Parsons employees 500 people in Pasadena and 2,000 in California. Those employees will not be asked to relocate .

Parsons, which makes about $3.6 billion a year, provides cyber/converged security, technology-based intellectual property, and other innovative services to federal, regional, and local government agencies, as well as to private industrial customers. The firm has more than 16,000 employees across 24 countries and spanning four continents.

Parsons was founded by Ralph M. Parsons. Beginning in 1944, Parsons provided process engineering, facility design, construction services and operated various jet propulsion facilities — nuclear, chemical, and heavy fuels. It also delivered electronics, instrumentation, and ground checkout systems design and engineering for aircraft, missiles and rockets.

Parsons sold its 22.7-acre property on Walnut Street to Morgan Stanley Real Estate Investing and Lincoln Property Co. for $320 million in 2011, but was still housed in the 12-story building. The employees in Pasadena will continue working in that building. Plans for the remaining property by Lincoln Property and AMLI Residential call for multiple mid-rise structures across 6.4 acres, featuring 400 residential units and 210,000 square feet of office space above 17,500 square feet of retail and underground parking, according to