You can synchronize your real estate WordPress site with the Gedeon API : http://api.gedeon.im/doc.
Currently supported themes are :
* WPCasa based (http://wpcasa.com)
* Realto (http://themeforest.net/item/realto-wordpress-theme-for-real-estate-companies/6801549)
* Decorum (http://themeshift.com/theme/decorum/)
More themes are coming soon !