Back agreement, also known as a postclosing possession agreement, enables the seller to continue occupying the property after the sale. You are required to obtain a business license.Review the landlord resources below which provide valuable information related to rental payments, inspections, maintenance, and noticing. Our lease options are fair, flexible, customizable and small business friendly. Make sure your lease (or rental agreement if it is month-to-month) clearly identifies all the expectations for you and your future tenant. This guide is intended to provide basic information on how sales and use tax laws apply to leases of items (tangible personal property) This section provides information to help you get started. Click through the steps above for a complete guide to starting a business in Alameda. Landlord Required Documents ; Proof of Ownership. Current Deed, Rental or Lease Agreement showing Business Address.