hello out there!

why is it that assessor's office don't put out all the commerical property info out in public?
everytime i go to Chicago title to pull some info on retail property, it doean't have building size, what year it was built, etc....
I have to take my sorry [censored] all the way to assessor's office just to get a few building info. nowadays, they charge you 3 bucks for front page that has all the pertinent info on the property. I can't even order this online. I physically have to go to their office to get the info.

does anyone know why they don't put out all the commercial building info?

thanks