When you ask several real estate companies to appraise the same condo, it's common for the figures to differ. Gaps running into the millions of yen aren't unusual, which can be confusing if it's your first time requesting an appraisal. This is a natural result of each company referencing different comparable sales, using different appraisal logic, and taking a different sales approach.
- Appraisal values for the same property can differ between real estate companies.
- The range of comparable sales and property databases each company references differs, which creates gaps in the basis for the figure.
- Appraisal logic — how heavily each factor is weighted — also varies by company.
- Some companies present a higher-than-market appraisal to win the listing agreement.
- When comparing appraisal values, check the explanation behind the figure, not just the number itself.
Differences in the Comparable Sales Referenced
Real estate companies calculate an appraisal value based on their own past closed transactions and on nearby transaction data obtained through REINS (the agents-only listing network). Because the volume and type of closed sales each company holds varies, the range of data referenced can produce different results. Companies with a strong track record in a particular area or property type tend to produce more accurate appraisals for that area or type.
Differences in Appraisal Logic
The method (logic) used to calculate an appraisal value also differs by company. Whether more weight is placed on building age and floor area, or on management condition and renovation history, varies in its underlying approach, so results can differ even from the same property information. More companies are introducing AI-based automated appraisal in recent years, but this doesn't change the fact that results still vary depending on the range of data used to train the model.
How Sales Approach Affects Appraisal Trends
It's also known in practice that some companies present a slightly higher-than-market appraisal value for the business reason of wanting to win the listing agreement. A high appraisal figure is appealing to see, but it's important to keep in mind that it doesn't guarantee the property will actually sell for that amount.
Why an Unusually High Appraisal Is Worth a Closer Look
If you receive an unusually high appraisal value, it's worth checking the comparable cases and the calculation method behind it. If you accept a high appraisal at face value without confirming the reasoning, you risk getting little response after listing at that price and ending up cutting the price repeatedly.
How to Read Appraisal Values When Comparing
When comparing appraisal values, look not just at how high the figure is, but at why it comes out that way, what comparable cases were referenced, and whether the agent's explanation is specific. Companies that explain clearly and back their figures with solid reasoning also tend to be easier to trust through the rest of the sale process.
How to Settle on an Appraisal Value You're Comfortable With
After comparing the figures and explanations from several companies, it's a good idea to use an appraisal value that isn't far off the general market sense, and whose reasoning is concrete, as your benchmark for setting the asking price and choosing which company to work with. Using a figure close to the average or median of the appraisals as your guide makes you less likely to be pulled toward an extremely high or low number. Rather than deciding on price alone, it's important to weigh in how easy the agent is to communicate with, too.
Frequently Asked Questions
How much difference in appraisal values is normal?
It varies by property and area, but a difference of a few percent up to around 10% between companies isn't unusual. If the gap is extremely large, it's worth checking the reasoning behind it.
If I choose the company with the highest appraisal value, will I sell for more?
An appraisal value is only a projection — it doesn't guarantee the price you'll actually sell for. It's important to check whether the reasoning behind it is clear before deciding.
How should I check the reasoning behind an appraisal value?
Ask your agent what comparable cases they referenced and how the figure compares with nearby closed sales, and check whether you get a concrete explanation.
Summary
Appraisal values can differ between real estate companies, and the background reasons include differences in the comparable sales referenced, appraisal logic, and sales approach. Rather than focusing on how high the figure is, compare the reasoning behind each one, and work out which appraisal value you can genuinely be comfortable with.