After renting the immigrant house, if the landlord wants to sell it, I will buy it. What if there is no certificate?

Negotiate with the landlord, contact relevant departments and seek legal assistance.

1. negotiate with the landlord: you can negotiate with the landlord and ask the landlord to provide the real estate license to assist in the transfer procedures.

2. Contact relevant departments: If the landlord can't provide the real estate license or is unwilling to assist in the transfer procedures, he can contact relevant local departments, such as the real estate management department or legal aid agencies, for help and advice.

3. Seek legal aid: If you can't solve it, you can seek legal aid, consult a lawyer about relevant legal issues and seek a solution.