As a land surveyor, we use CAD software that is designed for that kind of thing, and yes it pretty expensive, several thousand dollars a copy. I know title companies and lawyers use some kind of software that is much cheaper, but I'm not sure what kind.
As a land surveyor, of course I must caution you how you use this stuff. Its not like we are the only ones allowed to use tape measures and surveying equipment. I have 28 years experience and am licensed in two states. Most of the time someone just wants to know what the property looks like or a rough idea where the boundaries are, which is O.K. of course.
I'll relate a story on a boundary survey I did that went to court and then I'll stop preaching. I was working for a state park and a adjoiner had put some buildings up that badly encroached on the park. This entire process took over 10 years and cost the state thousands of dollars. The adjoiner was his own "lawyer" so it wasn't costing him anything but time. He of course was not a real lawyer. The trial took the better part of 2 days. Since he was representing himself, when he took the stand he just got up there and talked. He admitted he had surveyed his own property and his results differed from mine. When he told how he did the survey, you could tell he didn't have a clue what he was doing. My point is, this stuff can be misused, and be carefull what you do with it. I would consider land clearing a important issue to know where the boundaries are by a land surveyor.