Building a shed/building on existing concrete pad
some questions .......
1. where are you located?
2. do you know if you are required to have a building permit (a shed that size in my area would require one)
3. do you know what your frost depth is? meaning how deep must footings for a foundation go into the ground
4. do you put in the concrete slab? if yes, was top and subsoils removed? if so, what was put in its place?
"You get what you pay for, and sometimes free costs more!"