Commercial Lease Calculator

A Commercial Lease Calculator helps business owners and investors determine the total cost of leasing commercial real estate, including base rent, operating expenses, and additional charges. Accurate lease calculations are crucial for budgeting and cash flow planning, because the quoted base rent is rarely the whole cost.

The calculator combines base rent per square foot with additional costs like Common Area Maintenance (CAM), property taxes, and insurance, typically expressed as NNN (triple net) charges. On an NNN lease it adds the full CAM/NNN charge per square foot, on a modified lease half of it, and on a gross lease none, then multiplies by the square footage for annual and monthly rent. The annual escalation compounds on that combined rate each year, and the yearly amounts are added up over the term. Percentage rent and tenant improvement allowances are not modeled, so adjust for them separately.

Always verify whether quoted rates include or exclude operating expenses, as this can significantly impact total costs. Be aware that percentage rent clauses can add substantial costs if your business exceeds sales thresholds, and factor in potential annual rent increases of 2-4% when planning long-term budgets.