If you want a rough sketch, www.Zillow.com is a good place to review sold prices and homes all around any specific address. Zillow puts the value at $353K.
A realtor has access to sold data on the multiple listing service. Zillow also includes recorded data from foreclosed homes (where the 1st loan may set the price listed as "sold" price.)
The truth is usually somewhere in between. The true market value is usually "what someone will pay today if I sell my home." The closest number I like to find is the amount of pending sales for very similar homes in your same location with similar numbers of square feet, bedrooms, and even things like the direction your home faces. If you can find out what people offered within the last few weeks on pending sales, you have a good idea what people might offer for your home.
You may want to watch 1813 Sheri Ann, it is an active listing at $359K and see what happens. However, it is a short sale, and those will frequently go for less than a regular sale.
Keller Williams Silicon Valley