two years ago i bought a house on 1530 sqm block of land . the house was built in 1980 and changed 7 owners since then. recently i called my city council to inquire about subdivision of my property , i was told that i could subdivide into 2 or maybe 3 lots but there is a little issue - it seems on the maps that my house is located on some of my neighbor's property - according to their maps the boundary cuts my garage, kitchen and swimming pool in the middle. also the neighbor's house changed owners about 4 times since the 80's. i obviously used conveyancing services to do all the legal checks before purchasing. i really can't understand how could this property sold and change owners for 40 years without anyone notice - especially the city council. i was told by the city planner office that i need to submit for boundary realignment to correct my boundary. i was wondering what can happen when the neighbor find out and can he claim anything after nearly 40 years that my house exist where it is.