Commercial real estate leases are dramatically more complex than residential leases, and understanding the key terms and provisions is essential for evaluating the quality of a commercial real estate investment’s income stream. The difference between a favorable and unfavorable lease can be worth hundreds of thousands of dollars over a 10-year term.
Lease Types: Gross, Modified Gross, and Net
In a gross lease, the landlord pays all operating expenses (taxes, insurance, maintenance, utilities) and receives a single gross rent payment from the tenant. In a modified gross lease, expenses are divided between landlord and tenant according to negotiated terms — often with a base year expense stop above which the tenant pays increases. In a triple-net lease, the tenant pays all operating expenses directly. The economic value of each structure depends on the level and growth of operating expenses — net leases protect landlords from expense inflation at the cost of lower base rents.
Key Lease Provisions to Evaluate
Lease term and renewal options determine the duration of your income stream. A 3-year lease on a desirable property in a hot market may be preferable to a 15-year lease at below-market rents — or vice versa. Rent escalations — the annual increases built into the lease — determine how the income stream grows over time. Fixed bumps of 2–3% annually provide predictable growth; CPI-linked bumps provide inflation protection but uncertainty.
Tenant improvement allowances (TI) represent landlord capital committed to build out space for the tenant. Excessive TI allowances can dramatically reduce first-year returns. Early termination options give tenants the right to exit the lease before expiration — a risk that must be priced into acquisition economics. Renewal option rents may be fixed, at-market, or indexed — each with different implications for residual value at expiration.