Lawyers remind signed housing contract will check subtenant lease with the landlord of the sub-tenant to prove whether or contract. 律师提醒，签房屋租赁合同时一定查看转租人是否具有房东的转租证明或合同。
5, the sub-tenant housing, subtenant under this notification requirement for housing rental contract registration procedures. （六）改变出租房屋用途的，提供经规划部门批准的证明；
(5) the public housing leased to provide public housing rental contracts, subtenant a written agreement signed with the lessors; （5）公有住房转租的，提供公有住房租赁合同、转租人与出租人签订的书面协议；
