If you sell a property with vacant possession, you or your tenants can stay there up until the day of completion. If a landlord requires vacant possession because of the sale of the property, the landlord must give the tenant at least 30 days' notice.Let your solicitor deal with this in the first instance. If vacant possession hasn't been given then you've paid for something you don't have. The Seller May Have to Move Out Sooner. Sellers often receive requests for early buyer possession when the house is vacant. A seller is contractually obliged to give `vacant possession' of the property, unless the contract expressly states otherwise. Physical vacant possession requires the vendor to remove all goods not included in the sale from the property prior to completion. When buying or selling a property, understanding vacant possession is crucial. It means the property must be empty on the day of completion.