separation

Were you formally married? How long have you been separated? If you were married, there is something called an equalization of net family property which means you are entitled to share 50% in the increase in all assets during marriage. With the home, you would be entitled to a share especially since you have continued to contribute. There is a statute of limitations in terms of claiming property division, which is 6 years from date of separation or 2 years from divorce, whichever is earlier. You should see a lawyer as soon as possible.