Tom Senkbeil, president and chief operating officer at Carter in Atlanta, and Robert J. DeGrilla, senior vice president and managing director of Welsh's Orlando operations, couldn't be reached at GlobeSt.com's publication deadline to confirm or deny the estimated deal's value.

A prepared statement from Carter, however, states the deal was done to give the Atlanta firm increased regional market share. "It was crucial that we find a company whose synergies closely matched our own ideology," Senkbeil says in the statement.

Welsh contributes sales and leasing volume of $150 million to the deal, along with a $400 million listing sales inventory in Central Florida and a two million-sf property management portfolio.