How to Analyze a Real Estate Deal: Amateurs Guess, Professionals Underwrite

Here’s how most people analyze a deal: they look at the listing photos, check an online estimate, feel a little rush of excitement, and start doing math backward from the number they want.

That isn’t analysis. That’s a wish with a calculator.

I’m Ben Lovro. Through Cash Property Offers I purchase homes straight from owners around Columbia, Lexington and the wider Midlands, and I flip, wholesale and hold rentals. Every one of those exits starts with the same discipline: underwrite first, decide second. My team runs the same sequence on every lead, and I’m going to hand it to you here.

Amateurs guess. Professionals underwrite. The difference isn’t intelligence. It’s order.

The underwriting sequence

Here’s the order. Don’t skip ahead.

1. ARV — What is this property worth once it’s fixed? Proven by sold comps.
2. Repairs — What does it take to get there? Walked, written and priced by system.
3. Exit — What are you going to do with it? Flip, rental, wholesale, land play?
4. MAO — Given the exit, what’s the most you can pay and still have the deal work?
5. Risk check — What could break this deal that the numbers don’t show?

Then you compare your MAO to what the seller wants. If it fits, you move. If it doesn’t, you either structure something different or you walk away.

Let the paper make the decision. Not your gut, not your excitement, and definitely not the seller’s story about what the neighbor’s house sold for.

Step 1: the after repair value

The ARV is the foundation. Get it wrong and nothing built on top of it holds.

ARV is what the property should sell for once it’s renovated to the standard of the neighborhood. You don’t guess it, and you don’t pull it from an automated estimate. You build it from sold comparable sales — houses that actually closed recently, close by, and are genuinely similar.

I’m picky about comps, and you should be too. I filter on recency, distance, school zone, physical barriers like highways, bed and bath count, square footage, and age and style. Then I insist on at least three good ones. The full rule set is on the comps page.

Once you have the comps, you don’t pick a single magic number. You get a range, adjust for real differences, and underwrite toward the conservative side of it. I walk through that in calculating ARV.

Step 2: the repair estimate

Repairs are the second input in almost every investor formula, and the one beginners underestimate most.

Walk the property with a sheet that covers each system — roof, HVAC, electrical, plumbing, foundation, windows, kitchen, baths, flooring, paint, exterior. Write down what you see and what you suspect. Price it using local ranges you’ve built with a contractor, not national averages. Then add a contingency on top; I start around 15% and go higher on older or harder-to-inspect houses.

Even if you’re planning to rent the property or sell it to another investor, you need this number. Every exit gets priced off the condition of the house. The full walk-through is on how to estimate rehab costs.

Step 3: choose the exit before you choose the price

The same house can be worth different amounts to you depending on what you’re going to do with it. So decide the exit before you calculate anything else.

• Flip — buy, renovate, sell retail. You care about ARV, repairs, holding time and selling costs. See the flipping houses guide.
• Rental — buy, maybe renovate, hold. You care about rent, operating expenses, financing and long-term condition. The line items are on the rental analysis page.
• Sell to another investor — the deal has to work at their numbers, after your fee. In South Carolina, marketing a property you don’t own yet is restricted by the 2024 law — so before you plan around this exit, learn where SC draws the wholesaling line, then run your plan past a South Carolina attorney.
• Land or land plus mobile home — different comps, different due diligence. See the land investing site.

A good analyst also identifies an exit B. If plan A breaks — the market softens, the appraisal comes in light — what’s the fallback? A deal with two viable exits is a much safer deal than one with only one.

Step 4: the maximum allowable offer

Your MAO is the most you can pay for the property and still have the deal make sense for your exit. It’s a ceiling, not a target.

The classic flip formula is:

MAO = (ARV × 0.70) − repairs

If someone else is the end buyer and you’re taking a fee in the middle, subtract it:

MAO = (ARV × 0.70) − repairs − your fee

Rentals use a different logic — you work backward from what the property can support in rent after every expense and the debt payment, not from ARV alone.

Each exit’s version, plus when to tighten it, lives in the MAO formula guide. Why the flip version leaves 30% of ARV on the table is explained on the 70 percent rule page.

Step 5: the risk check

Numbers can look perfect and the deal can still be bad. Before you commit, run the house against a list of things that kill deals regardless of the math:

Any one of these can turn a good-looking deal into a project you regret. I go through each of them on the red flags page.

What “let the paper decide” really means

Once you’ve done the five steps, you have three numbers in front of you: your MAO, the seller’s asking price, and your honest read of the risk.

• If the seller is at or below your MAO and the risk check is clean — move forward, and verify everything during your inspection period.
• If the seller is above your MAO — don’t stretch your numbers to make it fit. Make your offer at your number, explain how you got there, and follow up. Circumstances change. The money is in the follow-up.
• If the risk check turns up a deal-killer — either price it properly or walk away.

That’s it. No drama. The paper made the decision, and you get to sleep at night.

Why this matters more than finding deals

New investors obsess over finding deals. Fair enough — you need leads. But a pile of leads without disciplined analysis just gives you more ways to make an expensive mistake.

The investors who last are the ones who can look at ten properties, underwrite all ten in a consistent way, pass on eight, and confidently move on two. Two deals is luck. Twenty is a system. And that system starts right here.

When I built my own business, the analysis process was one of the first things I standardized — same comp rules, same repair sheet, same formulas, every lead. That’s also why underwriting sits at the center of REI Boss, the software I created to run my company.

Where to go from here

If you’re brand new, work through these pages in order:

1. How to pull comps
2. How to calculate ARV
3. How to estimate rehab costs
4. Maximum allowable offer formula
5. Red flags when buying investment property

And if you want the broader beginner path — what to do before and after you can analyze a deal — read how to start investing in real estate.

Your next step

Get my free investor playbook. It includes the one-page deal analyzer I use, so you can run these five steps on a real property tonight. Then pick three houses that sold in your area recently and underwrite them as if you were buying. Do it ten times and you’ll see deals differently for the rest of your investing life.