Rulebook for Enclosing Space under Home?

[jpbdds]

Am considering purchase of a post and pier home but would like to utilize some space underneath it for a small in-law suite in the near future. Another option is perhaps to convert part of a covered workshop (with office) that already has permitted sink and electric. Looking for some info on what the county may allow. Hard to find online. Want to have a better idea should I make an offer. Any recommended sources online or some expert advice? Mahalo.