Selling lot (seller to buyer, no agents)

[Linchpin]

Someone contacted me and offered to buy a lot I own. It's just a hand cleared space with an unpermitted shed on it. It's a cash sale. They are aware of unpermitted building issues and such.
I just don't know how to do this. I'm sure I use a title company for somehting, but I really don't want to waste cash on a realty agent for this stuff.
Anyone point me in the right direction on this as to what steps I need to take. It should be an easy thing... my car cost more than this transaction will be.