Real estate WordPress themes have come a long way over the years. They are more attractive than ever before but most offer IDX/MLS integration. Take Wealty for instance: it is a commercial real estate team for single property, single agent, property marketplace, apartment directory, and other similar types of sites. It offers integration with iHomefinder, RealtyPress, dsIDX Pro, and other property listing services.
This theme comes with a field builder, so you can customize your listings to your liking fast. You get simple property, agent, agency, and listing builders. It also comes with fancy features like a customizable mortgage calculator, card animations, interactive map search, and reports.