How to find hidden potential in a property?

[Shay Nir]

I am looking for hidden potential in my potential investment properties in the Jacksonville metro area.

To be specific where can I find information in the county's website or other sites which can answer the following questions:

1) How much more living area can be added and on which floor, 1st, 2nd, basement, convert garage etc?

2) Can the land be split?

3) Can an SFR be turned into multi, how many units?

4) Can zoning be changed from low to high density? how?

If these can't be answered on the county's website, what is the best route to find the answers, and the amount of money / time it will take?

Thanks!