A single net lease is a type of commercial real estate lease where the tenant agrees to pay a portion of the property expenses in addition to the base rent. Typically, this includes property taxes, while the landlord covers maintenance and insurance costs. This arrangement allows tenants to have more control over their space and can lead to lower base rent. In a single net lease, the tenant's responsibility for property taxes can vary based on the lease terms. This lease structure is often used in retail and office spaces, providing a balance of risk and reward for both landlords and tenants.