This work deals with the requirements analysis of the online content management system of real estate agency. The aim of the work is to suggest and implement this system. The emphasis is mainly on the possibility of data synchronization with Czech real estate servers. On the basis of the appreciation of several different methods used for the data exchange there are illustrated their benefits and disadvantages. Ascertained matter will be used for the proposal of the method of synchronization among real estate systems. System is built by using PHP 5 and MySQL, XML, XSLT, XHTML, CSS, JavaScript, XML-RPC technologies.