How to analyze a commercial real estate deal

Every commercial deal lives or dies on four numbers. Most new agents can't name them, so they freeze on the first call with an investor. That's the wall.

This guide shows you how to analyze a commercial real estate deal the way a working broker does: which numbers to pull, how to run them in order, and how to tell a good deal from a money pit before you waste a week on it. There's a free calculator built into this page so you can run a real deal as you read.

Quick answer: To analyze a commercial real estate deal, calculate four numbers in order: net operating income (NOI), cap rate, gross rent multiplier (GRM), and cash-on-cash return. NOI shows the property's profit before financing, cap rate shows the return versus price, GRM is a fast value check, and cash-on-cash shows what you earn on the money you put in. Together they tell you if the deal makes sense.

Quick FAQ

What is commercial real estate deal analysis?

Commercial real estate deal analysis is the process of running a property's income, expenses, price, and financing through a set of standard formulas to decide whether it's a smart buy. It replaces gut feeling with math.

A residential buyer walks a house and pictures a life there. A commercial buyer never does that. They want to know what the property earns, what it costs to run, and what's left after the loan. Your job as the agent is to have those answers ready before the client asks, because in commercial you're not selling a building. You're selling an income stream, and the numbers are the pitch.

The good news: the math is repeatable. The same four calculations work on a strip mall, a warehouse, or a 12-unit apartment building. Learn them once and you can screen almost any deal in minutes.

What numbers do you need before you start?

You need four inputs to analyze any commercial deal: the purchase price, the gross annual rent, the annual operating expenses, and the financing terms. Get these before you touch a formula.

Here's what each one means and where it comes from:

1. Purchase price. The asking price or your offer. This is the deal's starting line.
2. Gross annual rent. Every dollar the property collects in a year, including base rent plus extras like parking or laundry. The seller's rent roll shows this.
3. Annual operating expenses. Taxes, insurance, maintenance, property management, and utilities the owner pays. This does not include the mortgage. Ask for a trailing 12-month expense statement.
4. Financing terms. Your down payment, interest rate, and loan term. These decide your actual cash flow, so a deal that looks great at all-cash can look thin with a loan.

If a seller won't share real rent and expense numbers, that's your first red flag. You can't analyze a deal you can't see.

How do you analyze a commercial real estate deal?

You analyze a commercial real estate deal by running four metrics in order: NOI, cap rate, GRM, then cash-on-cash return. We call this the USRT 4-Metric Deal Screen, and running them in this sequence tells you the full story of a property fast.

Here's the screen, step by step:

1. Net operating income (NOI). Net operating income is a property's yearly income after operating expenses but before the mortgage and income taxes. Formula: gross annual rent minus operating expenses. NOI is the foundation, and every other number builds on it. Go deeper in our guide to net operating income.
2. Cap rate. A cap rate is a property's annual net operating income divided by its price, written as a percentage. Formula: NOI divided by purchase price. Cap rate is how buyers compare returns across deals in seconds, no financing involved.
3. Gross rent multiplier (GRM). A gross rent multiplier is the price divided by the property's annual gross rent, used for a fast, rough value check. Formula: purchase price divided by gross annual rent. A lower GRM usually means you're paying less per dollar of rent. See our full gross rent multiplier breakdown.
4. Cash-on-cash return. Cash-on-cash return is your annual pre-tax cash flow divided by the actual cash you invested, written as a percentage. Formula: (NOI minus your annual loan payments) divided by your down payment and closing costs. This is the number that tells you what your money is earning. Our cash-on-cash return guide covers what counts as good.

Run all four and you'll know within minutes whether a deal is worth a deeper look.

Use the calculator above to run a live deal. Enter the price, rent, expenses, and your loan terms, and it returns NOI, cap rate, GRM, and cash-on-cash instantly, with a plain-English read on what the numbers mean.

Want to see the full workflow taught start to finish? This is chapter one of the USRT commercial course, and it walks the exact process on a real deal:

What is a good cap rate for commercial real estate?

A good cap rate for commercial real estate usually falls between 5% and 8%, but the right number depends on the market, the property type, and how much risk you'll accept. Treat it as a range, not a magic number.

Here's the honest read. A lower cap rate, say 4% to 5%, is typical of premium assets in big, stable cities, where buyers accept a smaller return because the income is safe. A higher cap rate, 8% and up, usually means a secondary market, an older building, or a tenant risk that could bite you. Neither is automatically better. A 9% cap rate on a building losing its only tenant is worse than a 5% cap rate on a fully leased medical office. Always ask what's driving the number before you trust it.

Cap rate also tells you nothing about your loan. That's why you never stop at cap rate. You finish the screen with cash-on-cash return, which factors in your financing.

How do you know if a commercial deal is worth it?

A commercial deal is worth pursuing when three things line up: the cap rate hits your target, the cash-on-cash return is positive, and the property's income comfortably covers the loan payment. Miss any one of those and the deal needs a second look.

That last piece has a name lenders care about: debt service coverage ratio (DSCR) is the property's NOI divided by its annual loan payments, and it shows whether the income can cover the debt. Most commercial lenders want a DSCR of at least 1.25, meaning the property earns 25% more than the loan costs. If a deal barely covers its debt, one vacancy can sink it.

Put it together with a simple gut check. Does the NOI hold up if you assume a realistic vacancy? Does the cap rate beat what you'd get on a safer deal? Is cash-on-cash still positive after the loan? Run those questions every time and you'll stop chasing deals that only look good on the surface.

What mistakes do new agents make analyzing deals?

The most common mistake new commercial agents make is trusting the seller's numbers without checking them. Sellers inflate income and hide expenses. Your job is to verify.

Three traps to avoid: taking a rent roll at face value instead of confirming leases and actual collections, forgetting to budget for vacancy and repairs so NOI looks higher than it is, and falling in love with cap rate while ignoring what the loan does to cash flow. Skilled agents catch all three, which is exactly why the skills you need to succeed in commercial real estate start with financial analysis. Lease structure matters too, and a triple-net deal changes your expense math, so know your commercial lease types before you run the numbers.

The takeaway

Analyzing a commercial deal isn't magic. It's four numbers, run in order, checked against reality. Get NOI right, compare with cap rate, sanity-check with GRM, and finish with cash-on-cash so financing is in the picture. Do that on every deal and you'll speak the language investors trust, which is what turns a licensed agent into a commercial one.

If you're new to commercial, our guide on how to become a commercial real estate agent lays out the full path.