How do we report the sale of our rental home to a family member for their principal residence? Time of ownership: 5 1/2 years. Gross proceeds on 1099-S = $700,000, Selling price = $700,000, Gift Equity = $265,000, Buyer Purchase Price = $435,000, Cost Basis = $480,000. How do we fill out the tax return and what is our capital gain as sellers? What is the cost basis for the buyer?