近几年，随着各项不动产登记制度的完善，在房产转让、抵押公证中，公证员已经可以做到完全有把握防止一切权利据疵。但去年《合同法》的实施，使这一问题又出现了新的情况。储同法》第286条规定，承包人就建设工程的变价享有优先受偿权（以下简称优先权）。由于这一条文规定得 In recent years, with the improvement of the real estate registration system, in the real estate transfer, mortgage notary, the notary has been completely sure to prevent all rights according to defects. However, the implementation of the “Contract Law” last year brought about a new situation on this issue. Article 286 of the Provisional Regulations on Storage and Storage stipulates that the Contractor shall have the priority to repay the changed price of the construction project (hereinafter referred to as the “priority right”). Because of this provision is provided