Hi, I’m Mark Stempel, Owner and Broker of Blue Island Homes. With over 30 years of experience and a background in architecture, I’ve helped hundreds of families buy and sell homes across Long Island. Alongside my dedicated team, we take a hands-on, personalized approach to every transaction, whether you’re purchasing your first home, upsizing, or selling a longtime residence. We know the local market inside and out and are proud to be named the B...