What should the Housing and Construction Bureau do if it files a property contract in violation of regulations?

1. Understand the relevant laws and regulations: Understand the relevant laws and regulations, and know whether the Housing and Construction Bureau has the right to file the property contract and whether the filing complies with the provisions of laws and regulations.

2. Seek legal aid: If the Housing and Construction Bureau violates the law, it can seek legal aid, consult lawyers about relevant legal issues, and make complaints or lawsuits according to legal procedures.

3. Complain to the higher authorities: If the Housing and Construction Bureau violates the rules, it can complain to the higher authorities and ask them to investigate and deal with the behavior of the Housing and Construction Bureau.

4. Rights protection: If the Housing and Construction Bureau's behavior causes losses, it can protect rights through legal channels and ask the Housing and Construction Bureau to bear the corresponding liability for compensation.