The Estate Agents Ordinance & The Estate Agents Authority (EAA)
You can deal directly with a property owner or appoint a licensed estate agent to help you find the right property. If you choose to appoint an agent, you should clarify with him or her details of the engagement such as the amount of commission and the time of payment before signing the estate agency agreement.
The Estate Agents Ordinance (Cap.511) ("Ordinance") (1997) provides for the licensing and the regulation of the estate agency trade. The Estate Agents Authority established thereunder is empowered to, inter alia, regulate and control the practice of estate agents and salespersons and to take such actions as the Authority considers appropriate or necessary to promote integrity and competence amongst, or maintain or enhance the status of, estate agents and salespersons. The Authority is also empowered by the Ordinance to make regulations governing different aspects of estate agency practice and to prescribe documents for use by the estate agency trade. 

Estate Agents Ordiance

Estate Agents Authority

Information about licensed estate agents and salespersons

Source : The Estate Agents Authonty