Legal analysis: 1. The house lease contract can be signed by an agent, but in order to avoid some disputes in the future, it is suggested that the client issue an autographed power of attorney and give a copy of his identity certificate. The client also needs to prepare the original ID card for inspection. If a house lease contract is signed without explicit authorization, it is an invalid contract.

2. When filling in the power of attorney, the entrusted matters and the authorized scope of authority shall be indicated. Authorized principals and trustees shall be persons with full capacity for civil conduct.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 162 A civil juristic act carried out by an agent in the name of the principal within the scope of his agency authority is effective for the principal.

Article 168 An agent shall not engage in civil legal acts in the name of the principal and in his own name, except with the consent or ratification of the principal. An agent shall not, in the name of the principal, carry out a civil juristic act at the same time with other people he represents, except with the consent or ratification of the principal.