President Donald Trump has appointed Dan Mathews, a more than 20-year veteran staffer at Capitol Hill, as commissioner of the General Services Administration‘s Public Buildings Service.

GSA said Friday Mathews will manage the federal real estate portfolio that covers more than 8,600 active assets across the U.S. as well as help the agency acquire, dispose and manage real estate assets to offer space for GSA’s government partners.

He will be sworn in as PBS commissioner on Thursday.

“I look forward to working with [Mathews] to provide our partners in government with the facilities they need to carry out their important missions,” said Tim Horne, acting administrator of GSA.

“Dan’s unique perspective of GSA, developed over more than a decade of helping lead congressional oversight, will be an invaluable asset to PBS and GSA,” Horne added.

Mathews most recently served as staff director for the House Transportation and Infrastructure Committee’s  economic development, public buildings and emergency management subcommittee.

GSA noted that Michael Gelber, acting PBS commissioner, will return to his previous role as the service’s deputy commissioner.