You have been looking at homes for three weekends in a row. You find one that feels right. The kitchen is open, the lot is good, the natural light through the back windows is exactly what you pictured. You make an offer.
Then the inspection report comes back. The roof has maybe three years left. The AC unit is original to the house. There is a small crack in the foundation slab that the inspector flags as worth monitoring.
And suddenly, none of it sounds that bad. The roof may last five years if you get lucky. The AC has been running fine so far. The crack is probably just settling. You find reasons to dismiss each issue, because the emotional decision has already been made. Now your brain is working to protect it.
That is confirmation bias. And it costs people real money.
Let's think through this.
What Confirmation Bias Actually Looks Like in Real Estate
Confirmation bias is your brain's tendency to favor information that confirms what you already believe, while ignoring, discounting, or rationalizing evidence that contradicts it. Everyone does it. It is not a sign of low intelligence. It is a feature of how human cognition works. The problem is that in a real estate transaction, the stakes make it especially dangerous.
Here is what I see most often.
A seller is convinced their home is worth $550,000. They found three comparable sales that support that number. What they did not do is look at the eight other comparable sales that closed between $480,000 and $515,000. They cherry-picked the data that confirmed what they wanted to believe. When a buyer offers $495,000, the seller does not view it as a market signal. They view it as a lowball, because they already decided the market is $550,000.
A buyer reads an article about interest rates dropping next quarter. They decide to wait. Every bit of news that supports the idea of lower rates gets their full attention. Every data point suggesting rates may hold steady or rise gets dismissed as an outlier. The problem is they are not making a decision based on the full picture. They are building a case for the decision they already want to make.
In both cases, the person is acting in good faith. They genuinely believe they are being rational. But the data they are using has already been filtered by their own preferences. Confirmation bias is not about lying. It is about seeing the world through a lens you do not realize you are holding.
How Confirmation Bias and the Current Market Play Together
The Phoenix metro market right now is a perfect environment for confirmation bias to thrive. In Scottsdale, inventory has jumped roughly 30 percent year over year, and about three out of four active listings have already reduced their price at least once. In Peoria, the market is balanced but shifting. Buyers have more options than they did a year ago. Sellers are adjusting expectations at different speeds.
When a market is in transition, the signals are mixed. Some data points say prices are softening. Others say demand is still strong. That ambiguity is where confirmation bias takes over. People gravitate toward the data that matches their preferred narrative and ignore the data that challenges it.
A seller in Glendale who anchored to the 2023 peak price will find reasons why every price reduction in their neighborhood does not apply to them. Their lot is bigger. Their updates are newer. Their street is quieter. Each reason may have some validity, but the pattern is the problem: the seller is building a case for a price the market is not supporting, one rationalization at a time.
A buyer in North Phoenix who has decided it is a terrible time to buy will find evidence everywhere. Rates are too high. Prices have not come down enough. The economy is uncertain. And some of that may be true. But the question they are not asking is what evidence they would need to see to change their mind. If no amount of data would shift their position, then their position is not based on data. It is based on confirmation bias.
The Three Places Confirmation Bias Hits Hardest
There are three stages of a real estate transaction where confirmation bias does the most damage. Recognizing them is the first step toward avoiding them.
Price perception. This is where most decisions start. You see a number, and you immediately start looking for evidence that it is either a great deal or a terrible one, depending on your position. The solution is to look at the evidence that contradicts your first impression before you let your opinion solidify. If you think the home is overpriced, spend an hour looking at the reasons it might actually be fairly priced. If you think the price is fair, look at the comps that suggest otherwise.
Due diligence. Once you have emotionally committed to a property or a sale price, your brain will minimize red flags. The inspection reveals a plumbing issue, and you tell yourself it is an easy fix. A buyer's agent points out the property backs a busy road, and you decide the white noise is actually peaceful. Let's separate emotion from fact for a moment. Write down the concerns. Get actual repair estimates. Ask yourself honestly: if you were not already attached to this property, would these issues change your decision?
Market interpretation. This is where confirmation bias becomes a long-term wealth issue. A seller who believes the 2023 peak is coming back will keep rejecting reasonable offers, waiting for a rebound that may not come. A buyer who believes the market will crash will stay on the sidelines while home prices and rents continue to rise. What is the risk if we are wrong? That is the question that breaks confirmation bias. If a seller waits an extra six months and the market softens further, what does that cost them? If a buyer waits two years and prices go up another 10 percent, what is the real price of that decision?
What to Do Instead
The antidote to confirmation bias is not to stop having preferences. It is to build a decision-making process that forces you to engage with evidence you would rather ignore.
State your belief, then argue against it. If you believe a home is worth $550,000, write down three reasons it might actually be worth $490,000. If you believe rates are about to drop, write down three reasons they could go up. This is uncomfortable. That is exactly why it works. The goal is not to prove yourself wrong. It is to see the full landscape instead of the one your brain wants to look at.
Let someone else play the opposing counsel role. A good real estate advisor will not just agree with you. They will point out the data you are missing, the assumptions you have not examined, and the risks you are discounting. If you find yourself getting defensive when someone challenges your reasoning, pay attention to that feeling. It is often confirmation bias trying to protect itself.
Use precommitment before you fall in love. Write down your criteria before you start looking at properties: the price range you will consider, the condition issues you are willing to take on, the timeline you are working with. Then hold yourself to those criteria when the emotional pull of a specific property starts to override your judgment. Precommitment is one of the few tools that reliably beats confirmation bias, because you are making the rules before you know which outcome you will prefer.
Ask: What would I tell a friend in this exact situation? Distance is the enemy of bias. When you are inside a decision, your perspective narrows. When you imagine advising someone else on the same situation, your perspective widens. If you would tell a friend to get the inspection, negotiate on the roof, or walk away from the deal, ask yourself why that advice does not apply to you.
Follow the evidence, not the story you are telling yourself. The market does not care what narrative you have constructed. It does not reward wishful thinking. The best real estate decisions come from people who are willing to look at the full picture, even when parts of it are hard to accept.
The Real Cost of Confirmation Bias
I have seen confirmation bias cost a seller over $40,000. They were convinced their home was worth more than the market would support. They turned down a solid offer at $715,000 and waited. Six months later, after three price reductions and sixty more days on market than necessary, they closed at $673,000. The confirmation bias did not just cost them the difference in price. It cost them the carrying costs, the stress, and the negotiating leverage they had in the first sixty days when the offer was on the table.
I have also seen confirmation bias cost a buyer a home they should have bought. They were convinced rates would drop before the end of the year. They passed on a property in a neighborhood they loved, in a price range they could afford. Two years later, rates had not dropped significantly, and that same floor plan in that same neighborhood had appreciated another $45,000. The bias did not just cost them the rate they were waiting for. It cost them the equity they would have built.
Let's zoom out for a minute. Confirmation bias is not just about a single transaction. It is a pattern that compounds over time. Every decision made through a biased lens reinforces the next one. The seller who overpriced in 2024 will be more cautious in 2026, potentially underpricing out of fear. The buyer who waited for rates may decide that they missed their chance and overcompensate by making an overly aggressive offer next time. The bias does not correct itself. It cycles.
What Advocacy Looks Like Here
I have spent my career watching consumers make decisions under conditions that make clear thinking hard. As a Designated Broker, I have seen transactions from every angle, and the common thread across the ones that went wrong was almost never a lack of information. It was a lack of willingness to engage with information that contradicted a comfortable belief.
That is not a character flaw. It is human nature. But the best real estate outcomes come from people who recognize it in themselves and build systems to work around it. That may mean bringing in a second set of eyes. It may mean running the numbers both ways before you decide what you want the answer to be. It may mean having someone whose only job is to ask the uncomfortable questions.
The better question is not whether the data supports what you want to do. The better question is whether you have looked at the data that does not support it.
If you are trying to make a real estate decision and you are not sure whether your thinking is clear, I would be happy to talk through it with you. Sometimes the most valuable perspective is the one that challenges you, not the one that agrees with you.
Respectfully,
Andrew Glenn
Designated Broker, My Home Group