June 13, 2002 The average sales price of an existing Napa County home during April was $355, 000, up slightly over the $354, 000 for April a year ago, reports Real Estate Solutions. The year-to-date average for a Napa County existing home now stands at $356, 000, up 8.5 percent over the first four month average in 2001 of $328, 000. Quality service at an affordable price! Need Questions Answered or ...