Real estate affairs; real estate agencies; real estate brokerage; leasing of real estate; sale of real estate; real estate appraisal; real estate management; management and administration of land and property developments; rent collection; rental and leasing of apartments, flats, houses and other residential or commercial properties; acquiring and managing real estate for investors; provision of real estate information; mortgage loan services; mortgage brokerage services; insurance services including property, building and land insurance