GIS Tax Assessment Value vs. Actual Value

[Andrew Fonden]

Hello BiggerPockets!

I am brand new to real estate investing (I have done 0 deals). I work in property management in Western North Carolina and search the web daily for investment properties for myself or the owner. After I find a property I'm interested in
I like to use GIS maps on county websites to take a deeper look. Anyways, my question is, do you look at tax assessment value as a tool to compare to the actual listing price?

Ex. A home is selling for 150,000 on Zillow but is tax assessed for 75,000. Would that worry you as an investor?