Investing
How to Evaluate a Commercial Investment Property
Evaluate the leases first, then the income, then the debt, then the building and the way you would leave it. A single ratio is a checkpoint, not a decision.
Quick answer
Build NOI from the rent roll, a vacancy allowance you can explain, and operating expenses. Compare that income with price using a cap rate, then with the loan using cash flow and DSCR. After the ratios, read rollover, tenant concentration, reserves, condition, location, and who buys the property later.
Key takeaways
- The rent roll is the story. The ratios are the summary.
- Vacancy and reserves you leave out will show up as a surprise later.
- Debt changes cash-on-cash and DSCR. It does not change the cap rate.
- An exit that depends on a perfect refinance is not an exit.
Income, vacancy, and expenses
Start with the leases, not the flyer. Scheduled rent, other income, free rent, and reimbursements should tie to documents. Then choose a vacancy and credit-loss allowance you can defend from this property’s history or from a clearly labeled forecast. This site will not hand you a market vacancy rate for Omaha or Lincoln. If you set vacancy to zero, say so and mean it.
Operating expenses are taxes, insurance, utilities the owner pays, repairs, and management, even if you plan to manage it yourself. Debt, depreciation, and capital projects stay out of NOI. Use the NOI calculator once the lines are real. If a seller’s statement hides a tax increase that has already been billed, fix the number before you fall in love with the return.
NOI, cap rate, cash flow, and debt
| Line | Amount |
|---|---|
| Gross scheduled rent | $200,000 |
| Vacancy allowance you chose | $10,000 |
| Effective income in the example | $190,000 |
| Operating expenses | $60,000 |
| NOI | $130,000 |
| Illustrative price | $1,625,000 |
| Cap rate on that price | 8.0% |
| Annual debt service assumed | $90,000 |
| Pre-tax cash flow before reserves | $40,000 |
Every figure above is made up so the sequence is easy to audit. The 8% cap rate is $130,000 divided by $1,625,000. It is not a market cap rate. Change any line and the result moves. Cap rate ignores the loan. Cash-on-cash return uses the cash flow and the cash you invest. DSCR divides the same NOI by debt service. In this stack, $130,000 divided by $90,000 is about 1.44, and that coverage disappears if you invented the NOI.
Run the pieces in the cap rate, cash-on-cash, and DSCR calculators, or together in the investment return calculator. That combined tool reads cap rate, cash flow after debt and reserves, cash-on-cash, and DSCR from one set of assumptions. It still does not decide that you should buy.
Rollover, concentration, and reserves
Rollover is the calendar of lease endings. A building with one expiration next year is a different risk from a building with the same NOI and staggered dates. Concentration is how much of the income sits with one tenant. One strong tenant can be a fine investment and a fragile one. Name the share. Then ask what happens to NOI, the loan, and your cash if that tenant leaves.
| Property A | Property B | |
|---|---|---|
| NOI | $100,000 | $100,000 |
| Price | $1,250,000 | $1,400,000 |
| Cap rate, as arithmetic | 8.0% | 7.14% |
| Lease picture | One tenant, expires in two years | Several tenants, staggered dates |
| What cap rate alone prefers | A, because 8 is higher | It ignores the calendar |
Property A is not a better buy because the cap rate is higher. It may be compensation for a renewal you do not have. Property B is not safer because the price is higher. The leases still have to be real. Reserves sit beside both stories. Roofs, parking, and tenant improvements arrive whether or not you put them in the model. If you exclude them from NOI, keep a separate capital budget. Pretending they are zero is how year-three cash flow vanishes.
Condition, location, and the exit
Condition is a capital plan, not a vibe. Inspect the building with people who can speak to the roof, structure, and systems. Location is the tenant’s business problem: customers, labor, and access. An Omaha industrial lease and a Lincoln office lease do not support each other as comps. Keep the property in its own metro, on the investment terms that actually apply.
The exit is who buys it later and with what income. A sale that requires a lower cap rate, a perfect refinance, or a tenant you have not signed is a hope. Write the holding period, the debt maturity, and the leases that will still be in place. If the balloon arrives the same year the largest tenant expires, you do not have two risks. You have one bad year. Financing is where that maturity is explained.
Questions people ask
Which ratio should I trust?
None alone. Cap rate compares unlevered income with price. Cash-on-cash includes your cash and the loan. DSCR is the coverage test. A property can look fine on one and fail on another.
Where do I get a vacancy rate?
From this property’s history, or from a forecast you label as a forecast. A national vacancy figure is not a substitute for this building’s leases.
Should reserves be inside NOI?
If you include them, NOI falls and the cap rate conversation changes. If you exclude them, keep a capital budget beside the model. Either method is acceptable when a reader can see it. The investment return calculator lets you enter reserves with the rest of the assumptions.
Is a higher cap rate the better property?
It is more income per dollar of price. It may also be shorter leases, weaker credit, or deferred repairs. The fictional pair in this article is the point: the same NOI can deserve different prices.
Written by Bryan Robinson, a Professional Sales Agent with NHS Commercial, licensed in nebraska.
Want help evaluating a commercial property?
Call or text Bryan at 402-521-3000 to talk through a specific property.
Bryan Robinson
NHS Commercial
Professional Sales Agent | Licensed in Nebraska