Christie's International Real Estate Northern New Jersey has complete luxury home listings for Middletown and nearby areas, including New Monmouth, Belford and Leonardo. We have 37 property listing(s) in Middletown, and 6,626 listings in all of New Jersey. Use the filters above to narrow your search for luxury homes for sale in Middletown. If you see a listing you like, click the photo to view details and connect with an agent in Middletown.