The paper evaluates the role of ethics in Spanish Real Estate Professional Bodies as a guide for real estate managers and brokers. Changes and desregulation on market rules have increased the divorce between professional behaviour and ethics rules. Economics reasons exist explaining how the unethical decisions could distort the market. Some initial economic considerations are presented in the paper to evaluate, from the economic point of view, the role of ethics in the Spanish real estate market. The paper looks for the existence of the ethics rules on real estate professionals developing a questionaire asking for the current reactions of our professionals facing the situations regulated by the traditional ethic code.