29 Which provision is a part of the sale-of-home rules? Up to two sales or exchanges of the taxpayer's primary or secondary residence are permitted each year. Only one sale or exchange of the taxpayer's principal residence is permitted each year, unless certain circumstances exist. Only one sale or exchange of the taxpayer's principle residence is permitted every two years, unless certain circumstances exist. Up to two sales or exchanges of the taxpayer's primary or secondary residence are permitted every two years. Question navigation