How to Read a Commercial Real Estate Proforma

A commercial real estate proforma is the financial blueprint of a deal. It projects a property's income, expenses, and returns over a defined holding period — typically five to ten years. Whether you are evaluating a multifamily acquisition, a retail development, or a mixed-use conversion, the ability to read and critically assess a proforma is the foundational skill of real estate investing. This guide breaks down the core components and teaches you how to identify the assumptions that matter most.

Every proforma begins with Gross Potential Income (GPI) — the total revenue a property would generate if every unit were occupied at market rent for the entire year. This is a theoretical ceiling, not a realistic expectation. From GPI, the proforma subtracts vacancy and credit loss (typically 5-10% for stabilized properties) to arrive at Effective Gross Income (EGI). Additional revenue streams — parking, laundry, storage, pet fees — are added to EGI as Other Income. Be skeptical of proformas that project vacancy rates below the submarket average or include aggressive other income assumptions without supporting documentation.

Operating expenses include property taxes, insurance, property management fees, repairs and maintenance, utilities, and administrative costs. The proforma subtracts total operating expenses from EGI to arrive at Net Operating Income (NOI) — arguably the single most important metric in commercial real estate. NOI represents the property's earning power before debt service and is the basis for valuation via capitalization rate. A critical distinction: capital expenditures (CapEx) — roof replacements, HVAC systems, parking lot resurfacing — are not included in operating expenses. They appear below the NOI line as separate reserve allocations.

• Property Taxes — Typically the largest single expense line. Verify the proforma uses current assessed values and applicable tax rates. In Texas, where there is no state income tax, property taxes tend to run higher than the national average.
• Insurance — Should reflect actual quotes for the property type, location, and coverage requirements. Flood zone properties carry significantly higher premiums.
• Management Fees — Usually 4-8% of EGI for third-party management. Owner-operated properties may show lower fees, but the labor cost exists regardless.
• Repairs & Maintenance — Older properties require higher reserves. A good benchmark is $500-$800 per unit per year for multifamily, adjusted for age and condition.
• Reserves for Replacement — Annual set-aside for future capital expenditures. Lenders typically require $250-$500 per unit per year.

The capitalization rate (cap rate) expresses the relationship between NOI and property value: Cap Rate = NOI / Property Value. Conversely, if you know the market cap rate and a property's NOI, you can estimate its value: Property Value = NOI / Cap Rate. Cap rates vary by property type, location, age, and market conditions. In Austin, multifamily cap rates currently range from 4.5% to 6.0% depending on class and submarket, while retail and office assets trade at 6.0% to 8.5%. A lower cap rate implies higher perceived stability and lower risk; a higher cap rate suggests greater risk or value-add opportunity.

Below the NOI line, the proforma accounts for debt service — the annual mortgage payment comprising both principal and interest. NOI minus annual debt service equals Before-Tax Cash Flow (BTCF). The Cash-on-Cash Return divides BTCF by the total equity invested, providing a straightforward measure of current yield. For example, if you invest $500,000 in equity and the property generates $40,000 in annual BTCF, your cash-on-cash return is 8.0%. Most institutional investors target cash-on-cash returns of 6-10% for stabilized acquisitions and 12-18% for value-add opportunities.

“A proforma is only as good as its assumptions. The best investors spend 80% of their diligence time challenging the inputs, not admiring the outputs.”

— REDV Studio Feasibility Team

The IRR is a time-weighted measure of total return that accounts for the timing and magnitude of all cash flows — initial equity investment, annual cash distributions, and the net proceeds from sale (reversion). Unlike cash-on-cash return, IRR incorporates the terminal value of the property, making it the preferred metric for evaluating total investment performance. Pay close attention to the exit assumptions embedded in the proforma: the projected sale price is typically derived by applying a terminal cap rate to the final year's projected NOI. Even small changes in the terminal cap rate can swing IRR by hundreds of basis points.

• Vacancy assumptions below submarket averages without clear justification.
• Aggressive annual rent growth projections (above 3-4% per year) without supporting market data.
• Operating expenses that fall significantly below comparable properties on a per-unit or per-square-foot basis.
• Exit cap rates lower than or equal to the going-in cap rate — this implies the market will be more favorable at sale than at purchase, which should not be a base-case assumption.
• Missing or understated CapEx reserves — especially for aging properties with deferred maintenance.

Reading a proforma with a critical eye is what separates disciplined investors from those who rely on hope. Every assumption should be defensible. Every projection should be stress-tested. And when in doubt, run a sensitivity analysis to understand how changes in key variables — occupancy, rent growth, interest rates, and exit cap rates — affect your bottom-line returns.