My sister wants to transfer the house to me. What should I do?

You and your sister are not immediate family members, and the only way to transfer the property to you is to buy and sell (if you give it, there will be consequences, but if you give it between sisters, you can't be tax-free). You need to take your sister and brother-in-law, your ID card, household registration book, marriage certificate, housing situation certificate and real estate license to the housing management trading center. Your brother-in-law must come and sign it. He can't come, so he needs his power of attorney to entrust an agent with the right to sign. Otherwise, you can't get through this!