Can vacant houses be rented to others as warehouses?

Yes, the owner is free to dispose of the house and use the proceeds. Both parties need to agree on the lease time, because if it is rented as a warehouse and the goods in the warehouse cannot be moved out for a while, the lease period can be agreed in advance.

Legal basis:

People's Republic of China (PRC) Civil Code

Article 704 The contents of a lease contract generally include terms such as the name, quantity, purpose, lease term, rent, payment term and method, and maintenance of the lease item.

Article 907 The warehouser shall accept the warehoused goods in accordance with the contract. If the warehouser finds that the goods are not in conformity with the agreement during the acceptance, it shall promptly notify the depositor. After acceptance by the depository, if the variety, quantity and quality of the stored goods do not conform to the agreement, the depository shall be liable for compensation.