For 24 years, Joe and Cynthia Lippolis have been the proprietors of River Towns Real Estate. In 2010, it changed its affiliation from GMAC to Prudential. Currently, it operates two offices of more than 30 licensed sales associates. The other office is run out of Peekskill, NY. At the Croton office on Grand St., it does sales and rentals, residential and commercial, and operates under the multi-listing system.