238 Greens Farms Road is rare in Westport or Fairfield County. It is a property offering a family residence and a legal second residence at its carriage house. Since there are few properties with an income feature in our area, we are not familiar with estimating its value. From a financial modeling perspective, residential rentals are evaluated like any other investment: by the ratio of their price to earnings (P/E). The national average P/E for residential rentals is 20 and Westport's would be higher. Using a P/E of 20 $19,200 annual earnings representing a $1,600 monthly rental solves for $384,000 in price. The $384,000 estimated evaluation compares well when looking at what $1,600 monthly can finance in the mortgage market today. At 4% it would finance a $335,000 30 year amortizing mortgage or an interest only loan of $480,000. At a P/E of 25, more likely for Westport, the evaluation estimate becomes $480,000. Every house 'has something.' 238 Greens Farms Road has a rental stream which addresses the 'elephant in the room' by providing a financial cushion in its price. It is reasonable that one could subtract $400,000 from the purchase price to estimate value of this income stream. Notionally, that is a reduction of 27% in the listing price. Please check with your financial planner to see how this transaction might work for you.