The present invention refers to transaction party or dealer must meet directly contract is made a form of off-line real estate contract method (Internet) as drain as, real estate connected to the provider (selling, rental) and a demander (number, leasing) is the present invention agree to and adheres to the a subscription be defined in a site being real name, site optional condition contract and the whole process contract be defined in a source to the site, contract is registered site the present invention the site searching conditions defined by the whole process contract in registration of the registrant match conditions if there are, party (registrar) without meeting of dealer or mechanically contract real estate in Internet, real estate on Internet to a main reinforced bar so the forcibly contract force-locking connections necessary is system and method.