I am looking for a land surveyor?

Very random. However, my mom is getting a fence built and our next door neighbor said that he will sign off on it once we have the land surveyed. In all honesty it makes perfect sense. I just never had to do this before and need a little guidance. I have googled a few places and got about three quotes. I guess my question is:
Is there anyway we can do this ourselves? Like is there some special marking that every builder does that lets you know exactly where your property starts and stops?
What is the average cost roughly for this service?

Thank you in advance!