Bill Caci, a longtime broker in Winchester, has joined Century 21 Commonwealth.

A top-producing broker for more than 40 years and co-founder of the Winchester Chamber of Commerce, Bill will represent Century 21 Commonwealth clients in Winchester and other Middlesex communities.

"Century 21 Commonwealth is proud to have an exemplary real estate professional like Bill join our team," Patrick Fortin, a partner with Century 21 Commonwealth, said in a statement. "Bill has built an unparalleled reputation in real estate over the decades and his experience, expertise and passion for the industry will benefit every member of the Commonwealth family."

Century 21 Commonwealth has been recognized by REAL Trends as one of the 500 largest brokers in the United States in 2013 with more than $1.2 billion in sales and 2,672 transactions.

Caci has been a practicing real estate broker for more than 45 years, most recently based out of the Winchester office of ReMAX. He is a member of the National Association of Realtors (NAR), Massachusetts Association of Realtors (MAR) and the Greater Boston Real Estate Board (GBREB), where he previously served on the board.