Real Estate Websites for agents and brokers generally provide a search functionality that focuses around IDX – Internet Data Exchange.
There are multiple types of real estate websites from basic sites that simply provide basic information on the agent or broker, lead generation websites that focus specifically on lead generation (usually leveraging Pay Per Click). There are also other types of of real estate websites such as All-In-One types of websites that include a CRM and Marketing Options.
Lastly there is the fully custom built website. By definition, is fully customized and could have any branding functionality the owner can think up.