The purchase contract is the legal prerequisite for you to obtain the real estate license. Pay attention to save the purchase contract to avoid unexpected property disputes. Housing provident fund can only be used to buy commercial housing of housing nature. If you need to withdraw the housing provident fund to repay the loan, you need to provide the full purchase invoice. Only by providing the full purchase invoice can we prove the ownership of the house, otherwise we can't prove the relationship, and we can't normally withdraw the housing provident fund to repay the mortgage.

You also need to provide the purchase invoice to apply for the real estate license. The materials needed to handle the real estate license include: application form for house registration, purchase contract, full purchase invoice, house plan, applicant's ID card, property deed tax payment certificate, and other relevant certification materials deemed necessary by the registration authority.