When we paid for the land, there were sales agreements filled out and copies given to both parties and my wife was given the deed. I was told we could not change the name on the deed at that time and that there was a waiting period? Maybe one of the more informed members knows the exact amount of years that one must wait.
The proprty was purchased from a family friend and every time I asked her about changing names on the deed, she would say later. When I would go into my lecture about trusting people, she would just say Thailand, meaning nothing happens quickly here. I finally got her to make a move two weeks ago and it has taken that long to get everything organized. The bad news is that we have to do this again for a one rai plot we purchased before the four rai. It was purchased using the same method. My wife received a bill of sale along with the deed.
I am not sure if this is all binding or not, but like my wife says, Thailand.