How are home values arrived at?For example. Home purchased for $620K. One year later owners put in pool, outdoor kitchen, fireplace, and landscaping at a cost of over $150K. Do these or any other improvements become part of the new home value? January 03 2009 - Folsom00YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.