Wondering if I have to pay capital gains tax if I sell a property I bought 25 years ago? The gain is about 130k. I've lived there or it's been rented out the whole time. I'm going to move back there so it will it will be my main residence again. I have purchased 3 other houses since which are also rented. I heard I have to be resident there for at least a year, just wondering if this is right before I decide to move.....