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Answers (3)

- Pasadenan
- Contributions:21466
The county records likely do not indicate floor level. It is more likely either differences in the price and date the units last sold at, or the property tax value. If you bought your house at a "discount", it may be assumed to be worth less.
Regardless, the calculations are done automatically with a least squares curve fit for multiple terms, and thus it is almost impossible to isolate any specific term that caused a specific difference. It would help if Zillow published the coefficients that it calculates, but they won't do that as it would give away their proprietary estimating method.
Still, you can look at the country records data for each, and others in the complex to see what differences might have what effect.
Remember it is only an estimate, and that if you need a more accurate value you either need to see what it will actually sell for, or you need to pay for an appraisal.
Regardless, the calculations are done automatically with a least squares curve fit for multiple terms, and thus it is almost impossible to isolate any specific term that caused a specific difference. It would help if Zillow published the coefficients that it calculates, but they won't do that as it would give away their proprietary estimating method.
Still, you can look at the country records data for each, and others in the complex to see what differences might have what effect.
Remember it is only an estimate, and that if you need a more accurate value you either need to see what it will actually sell for, or you need to pay for an appraisal.

- Michael Emery, "MikeEmery"
- Contributions:7298
Higher floors generally mean higher values, especially if the building faces a scenic location ie Central Park or a river valley. Take Zillow with a grain of salt.

- Tiffany Bond, "TiffanyBond"
- Contributions:3010
The zillow algorythm is imperfect and goes from county records. So if the county has no record of the interior of you condo, there would be no way for Zillow to know better. Is the other condo on a higher floor? Assessed higher for taxes?
Why is the value of my condo 6K less than a smaller/lesser upgraded unit in same complex?
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