A long form agreement for leasing office space in a multi-tenant office building drafted in favor of the landlord. In this Standard Document, the tenant pays its proportionate share of the increases in real estate taxes and operating expenses above those expenses incurred in a base year. A lease with this type of payment arrangement is sometimes called a gross lease or a base year model gross lease. Though an office lease is primarily governed by state and local laws, the information contained in this resource is useful and relevant to landlords and tenants in every state. This Standard Document has integrated notes with important explanations, and tips for drafting and negotiating an office lease.