It is illegal for someone to forge a signature when selling a house. In the process of signing and performing a contract, signing a contract in the name of fiction or signing a contract in the name of others needs to bear the liability for civil breach of contract and defraud the other party of a large amount of property, which may violate the crime of contract fraud in criminal cases.

legal ground

Article 224 of the Criminal Law

Under any of the following circumstances, if the amount involved is relatively large in the process of signing and performing a contract for the purpose of illegal possession, he shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention and shall also or only be fined; If the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years and shall also be fined; If the amount is especially huge or there are other especially serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than 10 years or life imprisonment, and shall also be fined or confiscated:

(1) Signing a contract in the name of a fictitious unit or others;

(2) Mortgaging with forged, altered or invalid bills or other false property rights certificates;

(three) to perform a small contract or part of the contract first, to deceive the other party to continue to sign and perform the contract, and to have no actual performance ability;

(4) After receiving the payment for goods, advance payment or secured property paid by the other party;

(5) defrauding the other party's property by other means.