How to Pull Comps for Real Estate (And Determine ARV Like a Pro)

Before you can make a confident offer on a house, you need to know what it will be worth when you're done with it. That number — the After Repair Value, or ARV — comes from one place and one place only: comparable sales. Real ones. Recent ones. Pulled and evaluated by you.

I do all of my comp research on Zillow. Not because Zillow is perfect — it isn't — but because it gives me everything I need to find sold comps quickly, visualize them on a map, and build a defensible picture of what my subject property will sell for when it's finished. You don't need an MLS login. You don't need a real estate license. You don't need to pay an appraiser every time you evaluate a deal. You need to know how to use the tool correctly — and when you do, you can pull comparable sales and determine ARV as accurately as any professional.

Let me show you exactly how I do it.

First: Ignore Zillow's Estimate Completely

Zillow has an automated valuation tool called the Zestimate. I want you to ignore it entirely. It is not a comp. It is an algorithm-generated estimate based on public records and market trends, and it has no meaningful relationship to what a fully renovated house will actually sell for in a specific neighborhood.

The Zestimate is almost never real for investor purposes. Don't use it, don't reference it, and don't let it anchor your thinking. What you want are actual closed sales of actual comparable houses — and Zillow can give you those if you know where to look.

What a Comp Actually Is

"Comp" is short for comparable — a recently sold property that is substantially similar to your subject property in the condition it will be in when you sell it.

That last part matters. You are not trying to determine what the house is worth today in its distressed state. You are trying to determine what it will be worth after a full renovation, finished and ready for a retail buyer. Your comps need to reflect that finished condition.

This means you cannot use houses that still need work as comps for your ARV. If you see a cheap sale on Zillow in the same neighborhood, pull it up and look at the photos. If it was a distressed property sold to an investor, that is not an ARV comp — that is a renovation comp. It tells you what other investors are paying to acquire in that area, which is actually useful for a different reason, but it has no place in your ARV calculation.

How to Pull Comps on Zillow: Step by Step

Here is the exact process I use. It takes a few minutes once you've done it a handful of times.

Step 1: Pull up your subject property

Search for the address of the property you're evaluating and open its listing page on Zillow.

Step 2: Switch to map view

Click on the map view. You want to see the neighborhood laid out visually — streets, lot lines, and surrounding properties.

Step 3: Enable lot lines

Toggle on the lot lines feature. This gives you a cleaner picture of the properties around your subject and makes it easier to identify what's on each parcel.

Step 4: Search the map for nearby sales

Now you can browse the map around your subject property. Zillow color-codes what you're seeing: yellow markers are sold properties, and red markers are currently active or pending listings.

Step 5: Read every color intentionally

Don't just look at the yellows. The red listings — the ones currently for sale or under contract — tell you what the market is doing right now. We'll come back to why that matters.

Yellow = sold. Red = active or pending. Both are useful — for different reasons. Don't skip the reds.

Reading the Full Picture: Sold, Pending, and Active

Appraisers are only allowed to use closed sales in their reports. As an investor doing your own due diligence, you have an advantage they don't: you can look at the full market snapshot and draw informed conclusions from all of it.

Sold Comps — Your Primary Data

These are your foundation. A sold comp is a completed transaction — a real buyer paid a real price for a real house. That is the most reliable data point available. When pulling sold comps, I'm looking for:

• Sales within the last six months whenever possible. The more recent, the better.

• Properties within a close radius of my subject — the tighter, the better (more on distance in a moment).

• Properties similar in size, style, bedroom and bathroom count, and — critically — finished condition.

• Sales that reflect what a renovated house looks like, not a distressed one.

Pending Sales — Directional Intelligence

A pending sale means a buyer and seller are under contract but the transaction hasn't closed. You don't know the actual sale price yet. But pending sales tell you something important: what the market is willing to put under contract right now, at what asking price, and how quickly. A neighborhood with multiple pendings is an active market. Properties going pending quickly at or above asking suggests upward pressure on values. Slow-moving pendings suggest softness.

Use pending sales to read the direction of the market, not to set your ARV. They inform your confidence level in the comps you're using.

Active Listings — The Ceiling and the Trend

What sellers are currently asking for finished homes in that neighborhood sets a ceiling on your ARV — and tells you what the competition looks like when you go to sell. If the best-renovated homes in the area are listed at $275,000, that's a data point. If those same listings have been sitting for 90 days, that's another data point — and a more important one.

Active listings also help you understand what buyers will be comparing your finished product against. Know what else is on the market. Know how your renovation will stack up against the competition.

How Far Back — and How Far Away — Should You Go?

In a perfect world, every comp is within a quarter mile and sold last month. The real world rarely cooperates. Here's how I think about expanding the search when perfect comps aren't available.

Recency

Six months is ideal. Within a year is generally workable. Beyond a year, you need to think carefully about what the market has done in the intervening time.

If you have to use a comp from 14 months ago and the market has been appreciating steadily, that comp is probably conservative — meaning your actual ARV may be higher. That's a comfortable position to be in. If the market has been declining or flat, an older comp may be optimistic. You need to account for the trend and adjust your ARV accordingly. Never just plug in an old number without thinking about what the market has done since that sale closed.

Distance and Neighborhood Boundaries

This is where a lot of investors — especially those working in unfamiliar territory — make costly mistakes. Distance on a map does not equal equivalence in value.

Early in my career I invested in Baltimore. That market taught me a hard lesson about neighborhood boundaries that I've never forgotten. You could have two nearly identical 1,200-square-foot row houses, two blocks apart, and one would sell for $300,000 while the other sold for $120,000. Not because the houses were different. Because one sat on one side of an invisible neighborhood boundary that buyers cared deeply about, and the other sat on the other side.

Those boundaries aren't always obvious. They don't appear on a map. They exist in the minds of buyers — and buyers are who set prices. If you don't know an area well, you cannot assume that proximity equals comparability.

When you don't know an area well, push yourself to find comps as close to the subject property as possible — ideally on the same block or within a few blocks. The further you reach, the more neighborhood-line risk you're taking on without realizing it.

As you get to know a market deeply, you'll develop an intuitive feel for where the lines are. I spent years in specific pockets of Baltimore, Wisconsin, and Tennessee — and in each place, the better I knew those pockets, the faster and more confidently I could pull comps because I understood the neighborhood dynamics from the inside.

Finding the Right Comparable When a Perfect Match Doesn't Exist

Ideally, your comp is an identical house — same square footage, same style, same bedroom and bath count, fully renovated — sold recently, close by. That's the dream. It doesn't always exist. Here's how to work with what you have.

Condition Adjustments

If the best comp you can find is a well-maintained 1,100-square-foot ranch that sold for $250,000 but wasn't a full gut renovation, you can still use it — with judgment. A full gut renovation typically commands a premium over a nice-but-not-new home. If that $250,000 sale was a clean, updated house but not freshly renovated throughout, your fully gutted version will likely sell for more. I'd feel comfortable estimating $260,000–$270,000 as my ARV in that scenario, knowing my finished product is going to be newer and nicer than the comp.

The flip side: if your renovation isn't going to be as thorough as the comp's, don't assume you'll match the price. Be honest about what you're delivering relative to what the comp delivered.

Square Footage Adjustments

Markets treat square footage differently — and understanding how your specific market prices it is important.

In Baltimore, it barely mattered whether a row house was 1,200 or 1,400 square feet. If it was a three-bedroom, two-bath in that range in a given neighborhood, buyers largely treated them the same. In Wisconsin, square footage mattered somewhat more. In Tennessee, it became very price-per-square-foot driven — buyers and appraisers both looked at it closely.

When you're forced to use a comp that's larger or smaller than your subject, adjust honestly. If the comp is 3,000 square feet and sold for $300,000 (that's $100 per square foot), and your property is 2,500 square feet, your starting ARV estimate should be $250,000 — not $300,000. You can sell your 2,500-square-foot home for more than that if it's nicer, better finished, or in a slightly superior location, but the square footage adjustment is your baseline.

Location Adjustments

Location, location, location. You've heard it a thousand times. It's still true, and it deserves a real discussion beyond the cliché.

The same house in different locations within the same general area can have dramatically different values. I've seen this play out not just block by block in Baltimore but in every market I've operated in. A small house on a premium lot — waterfront, water view, backing to woods, on a quiet cul-de-sac — will sell for more than the identical house on a busy street in the middle of the neighborhood. That premium can be 5%, 10%, or more depending on how buyers in that market value it.

Location also works in reverse. A house that backs up to a railroad track, a commercial property, a highway, or a less desirable part of town is going to face resistance from buyers regardless of what the comps say. The comps might justify $280,000. The location might cap you at $255,000 in practice because buyers who can afford $280,000 have options, and they'll choose the option that doesn't include train noise at 2am.

When a location factor — positive or negative — is significant, adjust your ARV before it surprises you at sale time. A 5–10% location adjustment can be the difference between a deal that makes sense and one that doesn't.

How Appraisers Think About Comps — And What You Can Learn From It

An appraiser working on a financed transaction is restricted to closed sales. They can't use pending sales or active listings in their formal valuation. They typically look for comps within a one-mile radius, within the past six months, similar in style and size, and in a reasonably similar condition.

When good comps don't exist within those parameters, they expand — first in time (going back further), then in distance (reaching further out), then in property characteristics (using somewhat different sizes or styles with adjustments). They document every adjustment and explain their reasoning.

As an investor, you don't have to follow appraisal rules. But thinking like an appraiser builds discipline. It forces you to be explicit about why you're using a given comp, what adjustments you're making, and how confident you are in the number you land on. That discipline protects you.

The key difference: an appraiser is valuing the property as it sits today. You are valuing it as it will be when you're done. Make sure every comp you use reflects the finished condition you're projecting, not the current distressed state.

The Most Valuable Comp of All: Your Own Deals

Here's something nobody tells new investors, but every experienced investor knows: the best comps you will ever have are your own completed projects.

Once you buy a house, renovate it, and sell it in a neighborhood, you now have the most precise data point possible for that market. You know what a finished house in that exact area sold for. You know what it cost to renovate. You know how long it took to sell and at what price relative to asking. That's not just a comp — that's a blueprint.

This is why I've always worked in specific pockets rather than trying to cover an entire city. In every market I've operated in — Baltimore, Wisconsin, Tennessee — I developed a handful of tight neighborhoods where I knew the values cold. The more deals I did in those pockets, the less research I had to do on the next one. My own transaction history became my primary comp database.

You don't need to know an entire city. You need to know your pockets — and you build that knowledge one deal at a time.

Do This Work Yourself. Always.

I want to close with something I feel strongly about, because I see investors shortcut this and pay for it repeatedly.

Pulling comps is not something to hand off. It is not something to outsource to your real estate agent or take on faith from a wholesaler or trust to an algorithm. It is your due diligence. It is the foundation of every offer you make. And it is a skill — one that improves dramatically with practice and deliberate effort.

The investors I've watched struggle most are almost always the ones who don't want to do this work themselves. They want someone to hand them a number. They want a Zestimate or a quick opinion from an agent. They never develop the instinct, never build the market knowledge, and never get to the point where they can evaluate a deal in minutes with real confidence.

The investors who become genuinely great at this business — the ones who move fast, make accurate offers, and rarely get surprised — are almost universally the ones who spent time in the field. They drove neighborhoods. They looked at houses. They pulled comps obsessively. They cross-referenced what properties sold for against what they looked like in person. They built a mental library of market knowledge that no course can give you and no algorithm can replicate.

Get really good at this. Embrace it. The investors who can determine value quickly and accurately are the ones who win the most deals, lose the least money, and build the most durable businesses. This is not a shortcut-able skill. It is earned.

The more time you invest in knowing your market — what sells, what doesn't, what buyers pay premiums for, where the neighborhood lines are, what a renovation premium looks like in your specific pockets — the more confident and the more profitable you will become. I promise you that.

Start pulling comps. Pull them on every property you consider, even the ones you don't make offers on. Build the repetition. The knowledge compounds over time, and eventually you'll find that what used to take you an hour takes five minutes — and your numbers will be more accurate, not less.

Pulling comparable sales and determining ARV is the foundation of every good deal in this business. Do it yourself. Do it consistently. Do it until it becomes second nature. That is how you go from an investor who hopes the numbers work to an investor who knows they do — before you ever make an offer.

Frequently Asked Questions About Pulling Comps

What is a comp in real estate?

A comp — short for comparable — is a recently sold property that is substantially similar to the property you are evaluating. Comps are used to determine what a property is worth based on what buyers have actually paid for similar homes in the same area. For investors, the most important comps are those that reflect the finished, renovated condition you plan to deliver.

Can I pull comps without an MLS or real estate license?

Yes. Zillow gives you access to sold comp data without an MLS subscription or a real estate license. By using the map view and filtering for sold properties in the vicinity of your subject property, you can identify comparable sales and build a solid ARV estimate entirely on your own. Professional investors do this every day.

How recent do comps need to be?

Within six months is the standard target. The more recent the sale, the more accurately it reflects current market conditions. If you have to use comps older than six months, factor in what the market has done since that sale closed — if values have been rising, an older comp may be conservative; if the market has softened, it may be optimistic.

How far away can a comp be and still be valid?

As close as possible is always the answer. Neighborhood boundaries — which don't appear on any map but are very real in the minds of buyers — can make two houses two blocks apart worth dramatically different amounts. In dense urban markets especially, push hard to find comps on the same block or within a few blocks. The further you reach, the more neighborhood-line risk you introduce.

Is Zillow's Zestimate a reliable way to determine ARV?

No. The Zestimate is an automated algorithm-generated estimate, and for investor purposes it is almost never accurate. It does not reflect renovation quality, neighborhood micro-dynamics, or what a fully updated home will command versus the distressed property you're buying. Use Zillow for its sold comp data and map tools — ignore the Zestimate entirely.

What's the difference between ARV comps and renovation comps?

ARV comps are finished, retail-condition homes that have sold recently — they tell you what your renovated property will be worth when you sell it. Renovation comps are distressed properties sold to investors — they tell you what other investors are paying to acquire in that area. Both are useful, but they answer different questions. Never use a distressed sale as your ARV.

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