ST. GEORGE, Maine — The chief justice of the U.S. Supreme Court and his wife have purchased a second, larger neighboring home on an island off the midcoast.

Chief Justice John Roberts Jr. and Jane Roberts of Chevy Chase, Maryland, purchased the Hupper Island home on Oct. 7, according to records at the Knox County Registry of Deeds. Hupper Island is located a few hundred yards off Port Clyde Village on the tip of the St. George peninsula.

No sale price was disclosed, but a 15-year mortgage for the Robertses with Wells Fargo Bank NA for $1 million was filed in the registry.

The property was purchased from Stephen Thomas and Evelyn Blum. Thomas had hosted the television show “This Old House” from 1989 through 2003.

The property that the Robertses purchased consists of nearly 2 waterfront acres facing Port Clyde. The 1,560-square-foot home was built in 1970 and remodeled in 2008, according to town assessment records.

The property is located next to the 1,344-square-foot home the Robertses purchased in June 2006. The couple took out a $275,000 mortgage at the time of that purchase as well as a $100,000 line of credit. The Robertses also purchased that home from Thomas and Blum.

Hupper Island is largely a seasonal community. There are 37 properties on the island.