Which type of lease agreement requires the tenant to pay rent, property expenses, a portion of gross sales, and possible additional property costs?

In a net lease, the tenant is responsible for paying rent plus some property expenses, typically including utilities, insurance, and property taxes. However, it does not involve a percentage of gross sales, which distinguishes it from a percentage lease.

A gross lease requires the landlord to cover all property expenses, such as maintenance, taxes, and insurance, while the tenant pays a fixed rent. This type of lease does not require the tenant to pay a portion of gross sales, hence it does not fulfill the criteria outlined in the question.

An index lease is tied to a specific index, such as the Consumer Price Index, to adjust the rent over time based on inflation or other economic factors. It does not involve payments based on gross sales or additional property costs, making it unrelated to the specifics of a percentage lease.