Zillow Advice: Your Home on Zillow - When creating an owners estimate, you used to be able to tally up the value and age of renovations. http://www.zillow.com/advice-thread/When-creating-an-owners-estimate-you-used-to-be-able-to-tally-up-the-value-and-age-of-renovations/457681/ Zillow Advice | Zillow Real Estate