How does the Commercial Lease NNN (Triple Net) & CAM Calculator calculate investment returns?

This calculator models net cash flows, cap rates, debt service coverage ratios (DSCR), and internal rate of return (IRR) by accounting for gross revenue, vacancy allowances, operating expenses, and debt amortization.

What expense ratios are recommended for rental underwriting?

Standard real estate underwriting reserves 5%–8% for property management, 5% for economic vacancy, and 5%–10% for ongoing maintenance and capital expenditure (CapEx) reserves.

Can I export these pro-forma financial schedules?

Yes, you can export your complete pro-forma underwriting model directly to CSV, Excel, or printable PDF format for lender presentation.

Commercial Real Estate Underwriting

Commercial NNN Lease & CAM Sizer

Calculate true monthly retail and office lease obligations: Base Rent $/sq ft/yr + Net Property Taxes + Building Insurance + Common Area Maintenance (CAM).

Leased Space & Rates

Rented Usable Space (Square Feet)

Sq Ft

Base Rent ($/sq ft/year)

Property Taxes ($/sq ft/yr)

Building Insurance ($/sq ft/yr)

CAM Expenses ($/sq ft/yr)

Monthly Rent Check Breakdown

Total Monthly Check $6,979 Base + NNN combined

Base Rent (Mo) $5,000 Pure space fee

NNN Surcharge $1,979 Taxes + Ins + CAM

All-In $/Sq Ft/Yr $33.50 True occupancy cost

Annual Outlay $83,750 12-Month lease

NNN Burden % 28.4% Over base rent

Need Commercial Solar Depreciation Modeling?

Calculate 5-year MACRS depreciation schedules and 30% ITC for commercial real estate.

MACRS Solar

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