Mann & Sons, Inc. Delaware Beach Real Estate website specializing in Rehoboth Beach Real Estate. Located in the heart of Rehoboth Beach, Delaware, a friendly and popular beach community! If you are looking to purchase a home by the shore or you just want to rent a place for the summer or year-round, you are on the right site! We are experts in sales, rentals, vacation rentals and development and have all the latest technology to meet all of your real estate needs!