I realize this response is way too late but decided I should do so anyway. I live and work in Yountville and have sold real estate here for the last 20+ years. This is a unique time for selling property up valley. Year to date, there have been 16 sales within the Town limits with the median price being $670,000. The vast majority of these sales, 13, under $700,000. In a normal year, what ever this was, sales are approximately 25 per year and in the height of the bubble sales reached nearly 30 per year.
Thus if your property is under the $700,000, you stand a very good chance of selling. However, you also must consider that the average days on market for these sales is still rather long, 159 days. If your home is much higher priced than this, unfortunately this is one of the slowest segments of the up valley market and often the price has to be preceived as a steal to generate a sale.
Please feel free to call me at my office and we can discuss this. God luck on whatever you decide.