A Simple Way to Tell If a Deal Makes Sense

Hinton, WV · Member since 2026 · 1k+ posts · 373 votes

6mo

This is exactly right. You nailed the four questions every investor should ask before looking at a single spreadsheet. Most people get wrapped up in ROI formulas and cap rates when they haven't even answered these four.

One thing I'd add: expect a 15-25% cost overrun on ANY rehab project, especially your first few. New investors chronically underbudget labor, contingencies, and permits. If your numbers only work perfectly, they don't work. There's no margin for the contractor who finds hidden mold in the walls or a bad foundation corner. Build a 20% buffer into your rehab estimate before you even start underwriting.

The market comparison point is also underrated -- don't just look at sold comps. Look at what's listed and sitting. If three houses like yours are listed at 50k and not moving, but comps sold at 50k six months ago, that tells you the market shifted. Timing matters more than people think. What market are you seeing the most confusion from newer investors on right now?

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Joe VilleneuvePro Member

Plymouth, MI · Member since 2013 · 13k+ posts · 19k+ votes

6mo

You skirted around the correct answer. Some of these answers are correct but only when combined with others. Stand alone answers don't matter.

1 Rent is a part of the number that matters, which is cash flow. You can cash flow a property with high rent or low rent as long as the mortgage, taxes and insurance is covered every month.

2 Rehab cost is important, but this depends on how you pay for it...not the total amount. If you are including it in some type of loan, then the rent must also cover this. If you are paying cash for it, then you add this to the down payment as a direct cost to the REI.

3 The cost of the property also is important, but the actual cost is misunderstood by many REI. The Sale Price isn't the cost to the REI. The cash out of pocket is. The lower the cash out of pocket, the less the REI is paying for the property. This is only a part of how the "deal" is made. The other half is just as important. It's how someone/something else pays for the rest. It's the terms. Ultimately, this is what makes or breaks the deal.

4 This is true. The spreads.

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Dominic Magallanez

Investor · San Antonio, TX · Member since 2026 · 43 posts · 10 votes

6mo

Your break down super accurate! Great information

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Bruce WoodruffPro Member

Contractor/Investor/Consultant · San Diego / Phoenix · Member since 2021 · 12k+ posts · 15k+ votes

6mo

#2 is where most Investors fail. Hoping/wishing that a project comes in where you expected is not a plan.

Refurbish budget prices must be checked and double-checked but will still always be low.

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Bo SmithPro Member

Hinton, WV · Member since 2026 · 1k+ posts · 373 votes

6mo

This is the right foundation, and Joe's follow-up about cash out of pocket is the real meat of it. Too many new investors focus on the sale price or the rent number in isolation. What matters is the ratio of your out-of-pocket cash to the return you're generating. That's the core of deal math.

The part Louis didn't fully flesh out is the contingency buffer. Tight margins kill deals. If your room

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Arman AhmedPro Member

Real Estate Agent · Columbus Cleveland Dayton, OH · Member since 2024 · 2k+ posts · 929 votes

6mo

Quote from @Louis Wisinski:

When you’re new to real estate, analyzing deals can feel complicated.

There are a lot of numbers, formulas, and opinions out there.

But at a basic level, most deals come down to a few simple questions:

1. What can the property sell or rent for?

Look at similar properties nearby to get a realistic idea.

2. What will it cost to fix or improve?

Be honest here and expect it to cost more than you think.

3. What are you buying it for?

This is where the deal is made or lost.

4. Is there enough room in the middle?

After all costs, fees, and time, is there still profit left?

If the numbers are tight or only work in a “perfect” scenario, it’s usually a sign to be careful.

You don’t need a complicated system to start just a clear understanding of value, cost, and margin.

Over time, the more deals you look at, the easier it gets to spot what works and what doesn’t.

For those getting started, what part of deal analysis has been the most confusing so far?

Love how you broke this down, simple and actually useful for newer investors. A lot of people overcomplicate analysis when it really does come down to understanding value, cost, and margin, as you said. For me, the part I see beginners struggle with most is getting accurate rehab numbers and realistic rent projections. That’s where having boots on the ground makes a huge difference. If you ever want to look at actual deals in a market that still has strong margins (Ohio is my main focus), I’m happy to walk you through how I underwrite them so you can compare your framework to live examples.

[email protected]614-418-6081

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Alfath AhmedBusiness Member

Real Estate Agent · Columbus, OH · Member since 2022 · 1k+ posts · 1k+ votes

6mo

Quote from @Louis Wisinski:

When you’re new to real estate, analyzing deals can feel complicated.

There are a lot of numbers, formulas, and opinions out there.

But at a basic level, most deals come down to a few simple questions:

1. What can the property sell or rent for?

Look at similar properties nearby to get a realistic idea.

2. What will it cost to fix or improve?

Be honest here and expect it to cost more than you think.

3. What are you buying it for?

This is where the deal is made or lost.

4. Is there enough room in the middle?

After all costs, fees, and time, is there still profit left?

If the numbers are tight or only work in a “perfect” scenario, it’s usually a sign to be careful.

You don’t need a complicated system to start just a clear understanding of value, cost, and margin.

Over time, the more deals you look at, the easier it gets to spot what works and what doesn’t.

For those getting started, what part of deal analysis has been the most confusing so far?

I agree with you on the above.

1. Looks at ARV of similar properties on Zillow or ask your agent for comps within last 6 months

2. If you break it down part by part, you will get your answer. Roof, HVAC, HWT, Electric, Plumbing, structure, interior and exterior condition)

3. Buy at 80-85% of true value if turnkey, and 75% ARV is value-add

4. Depends on goal like flipping, i want to make at least $25k to $30k after everything, BRRRR, i want most of my money out and the property to be cashflow positive to be stable.

[email protected]614-802-5698

ReafCo | Ahmed Group 530 Reviews

Website View Page

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Bo SmithPro Member

Hinton, WV · Member since 2026 · 1k+ posts · 373 votes

6mo

Louis has the right framework, but Joe's point about cash out of pocket vs. purchase price is where most people get tripped up. You can buy a property for 00k with 30% down (0k out of pocket), or find one for 00k with 10% down (0k out of pocket). The second one is a better use of your capital even though the first property might have more upside. It's all about return on the money you actually have in the game.

Here's what I always come back to: Can this deal survive if my assumptions are off by 10-15%? If the rent comes in 10% lower, or the rehab costs 15% more, is there still profit? If your numbers are so tight they only work in a "perfect scenario," you're not looking at a deal -- you're looking at a lottery ticket. Margin is everything.

And the fundamentals Louis mentioned are right, but incomplete without the financial structure. Two flips can have identical numbers but completely different outcomes depending on whether one's funded with cash and the other with a bridge loan at 10% interest. The deal isn't just about the spread -- it's also about how the money flows. Are you mostly looking at cash purchases, financed deals, or a mix of both?

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Beau Menegay

Uniontown, OH · Member since 2015 · 36 posts · 7 votes

5mo

The only thing I’d add (that took me a while to learn) is that it’s not just about “is there profit left?” — it’s how sensitive that profit is to being wrong.

A deal can check all 4 of your boxes and still be risky if:

Rehab comes in 10–15% higher
ARV is slightly overestimated
Timeline stretches longer than expected

That’s usually where newer investors get burned.

What helped me a lot was stress-testing deals like:

What if rehab is +$15k?
What if it sells for $10k less?
What if it takes 2 extra months?

If the deal still works after that, it’s solid. If it falls apart fast, it’s probably too tight.

I’ve found the best deals aren’t the ones that barely work — they’re the ones that still look good even when things go a little sideways.

Curious—do you personally build in a standard buffer (like % or dollar amount), or just deal-by-deal?

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A Simple Way to Tell If a Deal Makes Sense

A Simple Way to Tell If a Deal Makes Sense

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