Answer

There are many sources of market value available online. And, you should consult a local real estate professional for specifics in your neighborhood. A little digging online turned up median home values on Redfin.com. Here is a table showing the median home value in January of each year from 2017 - 2020.

 

GA-Median-Home-Value

Links to Redfin Market Insights:
https://www.redfin.com/neighborhood/191517/GA/Marietta/East-Cobb/housing-market
https://www.redfin.com/city/33537/GA/Johns-Creek/housing-market
https://www.redfin.com/city/33985/GA/Milton/housing-market
https://www.redfin.com/city/17232/GA/Roswell/housing-market
https://www.redfin.com/city/17553/GA/Sandy-Springs/housing-market