DEAR ABBY: A few years ago, my parents gave me a beautiful piece of property and the opportunity to build a small house, mortgage-free. The problem is, during those few years, I married and started a family. We have now outgrown the house and are in desperate need of an upgrade. We’d like to sell the house and use the funds to buy something more accommodating. Adding on is not an option, as our funds are limited, and we could use the proceeds from the sale to buy something we won’t have to fix up. I don’t know how to break the news to my parents that we want to sell. My father worked hard to p…