We may think we have a firm grasp of our market’s value, but new research suggests that’s not the case.

Chicagoland homeowners overvalue their listings by 0.63 percent, at least compared to what certified appraisers judge as the value of the property.

That was the finding of Quicken Loans’ latest Home Price Perception Index (HPPI), which compares appraiser opinions in metro-area housing markets with homeowner estimates. Nationally, appraiser opinions were 0.40 percent below those of homeowners, down from March of last year, when appraisers valued properties 2.16 percent higher than homeowners.

Our graph below shows how the HPPI has changed from March 2014 to March of this year; a positive HPPI means that appraisers value properties more than homeowners, while a negative HPPI means they value it less:

Chicagoland’s marketplace has undergone an interesting transformation, one that mirrors the national average. A year ago, appraisers were valuing Chicagoland property 1.78 percent higher than homeowners were – meaning that homeowners, likely as a result of the downturn, were still undervaluing what their property was really worth.

Now, though, with the memory of the strong 2013/early-2014 marketplace still strong, homeowners have jumped the gun a bit and are now overvaluing their property beyond the fundamentals.

It will be interesting to see if that pattern continues into the spring buying season, especially considering how many seller markets there currently are in housing; as the other cities in the above graph demonstrate, appraisers have been valuing properties very strongly in certain areas.