How to Analyze a Commercial Real Estate Investment

Most people analyze a commercial property in the wrong order. They start with the cap rate, because it is the number in the marketing brochure. But a cap rate is an output, and it is only as trustworthy as the income figure underneath it — which is the number a seller has the most latitude to present favourably.

Work it in this order instead.

Step 1 — Build the income yourself

Net operating income is the property’s income after operating costs but before debt service, depreciation, capital expenditure and tax. Everything downstream depends on it.

The construction is:

• Start with gross potential income — what the property produces at full occupancy at current rents
• Subtract vacancy and credit loss
• Add other income — parking, signage, expense recoveries
• That gives effective gross income
• Subtract operating expenses to reach NOI

Use the NOI calculator to work through it. It shows the operating expense ratio, which is your fastest sanity check: an expense ratio far below market usually means something has been left out.

What gets left out

The three most commonly omitted items in a marketed NOI:

• Management fees — real even if the current owner self-manages. A buyer will pay them.
• Replacement reserves — roof, HVAC, parking. Not an annual cash expense, but a genuine cost.
• Realistic vacancy — a fully-leased building is still underwritten at market vacancy, because leases end.

Also establish which NOI you are being shown: actual trailing income, pro-forma, or a stabilised projection assuming the seller’s leasing plan succeeds. They are very different numbers wearing the same label.

Step 2 — Test the price

Now the cap rate means something. It is NOI divided by price, and it expresses your unlevered annual return at that price.

The more useful direction is backwards: rather than accepting a price and computing the cap rate, take your required cap rate and compute what the income is worth to you. The cap rate calculator shows implied values at benchmark cap rates alongside the headline figure for exactly this reason.

What justifies a higher cap rate

A cap rate is a price on risk. These push it up for the same income:

• Short weighted-average lease term — income that ends sooner is worth less
• Single-tenant exposure — one covenant, one point of failure
• Below-market or above-market rents — the former is upside, the latter is a cliff
• Deferred capital expenditure
• Secondary location or functional obsolescence

Step 3 — Check the financing works

Debt service coverage ratio is NOI divided by annual debt service, and it is usually the binding constraint on commercial loan sizing — more often than loan-to-value.

Many commercial lenders apply a minimum around 1.25×. The DSCR calculator also shows the maximum debt service supportable at 1.25×, which is the practical way to size a loan from income rather than guessing at a loan amount and checking afterwards.

Expect the lender to underwrite its own NOI, not the seller’s. Vacancy, management and reserves will be normalised to market, and the resulting DSCR is frequently worse than the one in the offering memorandum.

Step 4 — Check the property can legally do what you need

This is the step that gets skipped, and it is the one that voids the entire analysis when it goes wrong. The economics do not matter if the intended use is not permitted, or if the site cannot accommodate it.

Before you get far, confirm the parcel’s zoning of record, the governing jurisdiction and the land area. In Las Vegas this is not a formality: four separate authorities govern the valley, and a Las Vegas mailing address does not tell you which one applies.

Property Intelligence returns all three from public county records in seconds. The Las Vegas commercial zoning guide explains why zoning of record is still not the same as permission, and why a zoning verification letter is the only authoritative answer.

Step 5 — Understand what the numbers cannot tell you

Three things decide commercial outcomes and none of them are in a spreadsheet or a public record:

• Tenant covenant quality. Two tenants paying identical rent are not equivalent assets.
• Lease structure. Who actually pays for what, what escalates, what the renewal options are worth, and what happens at expiry.
• Building specification. For industrial especially — clear height, dock doors, power, yard depth. These determine the tenant pool, and none of them appear in county records.

This is the boundary between analysis and judgement. The calculators handle the arithmetic honestly; the rest takes someone who knows the market and has seen the building.

A working sequence

1. Build NOI yourself from the rent roll — NOI calculator
2. Test the price against your required return — cap rate calculator
3. Confirm the financing works — DSCR calculator
4. Verify zoning, jurisdiction and land area — Property Intelligence
5. Get a zoning verification letter and read every lease before you commit

Where to go next

Research a specific property with Property Intelligence, or explore Las Vegas, Henderson and North Las Vegas. Working on something specific? Talk to Matthew.

This guide is general commercial real estate education. It is not investment, tax, legal or lending advice, and no part of it is a recommendation on any specific property.