Hello

I am new to this page. I have a single vanity and we are looking into a double vanity. I was wondering if it was possible to convert the vanity without going into the wall. I live in Richland County, SC and not sure of the building codes. Also we would like vanity with drawers in the middle but I am not sure if it would be possible to run the plumbing with the drawers being in the middle? I will not do the plumbing but I was wondering since I was looking and trying to plan out what we would like in our bathroom. Please give me advice and suggestions. Thanks.