Expense escalations are relevant when the landlord is paying a base level of expenses and when the tenant is paying expenses. With a typical gross lease, the landlord pays all expenses and the tenant pays expenses in excess of a base level. (Gross leases are atypical for retail.) The base level is typically the operating expenses for the year the lease is signed. The "expense escalations", would be expenses in excess of this base level which the tenant is responsible for paying.

Some leases also provide a cap on increases in expenses. To provide more certainty for the tenant's cost of occupancy, the tenant may request that property tax increases do not exceed 5% in any year. Property tax increases can be enormous in some states. For example, initial property tax assessments in Texas for retail buildings have increased by 20% to 100% for many retail building owners. In many cases, these large initial assessments have been successfully reduced to a level much closer to the prior year's value.

However, the property tax assessment process can be arbitrary at times. If the property taxes did increase by 20% or 100%, the landlord would be responsible for the increase in excess of 5% for the example given. There are also sometimes expense escalation caps for utilities, insurance, total expenses and other items.

A co-tenancy clause for retail defines a tenant's right to terminate the lease if another tenant ceases operations. For example, consider a grocery anchored neighborhood shopping center. Let's assume Kroger's, a nationally known grocery retailer, is the anchor. Bob's dry cleaner store decides to lease space in the center because it believes the Kroger versus will draw all a large volume of traffic. There's an agreement to pay rent commensurate with the traffic which should be generated by Kroger. However, five years after the center is built Kroger decides to "go dark".

In other words, it ceases operations at this location. A co-tenancy clause would provide Bob an option to terminate his lease. There will typically be a defined period for terminating the lease based upon the co-tenancy clause.