Tenants no longer come to the agent and rent the property. He must go out for them and rent to them in the face of sharp competition. He must have records of expiring leases in other properties and see if he can induce tenants to move to his building. This involves canvassing hundreds of concerns. Work with a prospective tenant should begin at least six months before his lease expires. But in the rush to get tenants, the agent must not be short-sighted and take a tenant whose presence will make other tenants less satisfied or give the building a character which may affect its. total rentals.