I bought my house in Montenegro in 2006 and at that time I could not own the land that I bought my house on and now that the law has changed recently that I may become the owner of the land that my house is on i want to do this .I have called into the municipality and I was told that I need the previous owners to sign an annex agreement to the original sales contract.Is this correct and if so can the people that sold me the house look for more money from me to sign this agreement?