BOSTON — During his swearing-in ceremony, Joseph Michaud of Dartmouth presented Gov. Charlie Baker with a present: a framed collection of John Volpe campaign memorabilia.

"I just wanted to thank you governor," Michaud said. "This is something that will help so many people."

On Wednesday, Michaud and four others were sworn in by Baker and Lt. Gov. Karyn Polito to state Housing Court, and their presence on the court marks a 50 percent expansion to bring the court statewide.

While parts of eastern, central and western Massachusetts are currently served by the Court, the expansion brings another two million people under the court's jurisdiction in southern Middlesex County, Norfolk County and the Cape and Islands.

The Housing Court oversees civil and criminal actions that involve the health, safety, or welfare of homeowners or those who live in residential housing. The courts hear eviction cases, small claims cases, civil action suits, and other cases related to residential housing. Led by Chief Justice Timothy Sullivan, the Housing Court now has 15 confirmed judges.

Baker has now appointed Gustavo del Puerto of Salem to serve on the court's Northeastern Division, Donna Salvidio of Worcester and Neil Sherring of Westwood to serve as circuit justices, and Michaud and Irene Bagdoian of Westboro to serve on the court's Metro South Division.