Have you tried using Zillow?
I tested it out to see how close they are to market value.
Trial #1 A property I sold for $375,000 Zillow gave it a value of $401,000. While I think we did get a pretty good price for that home, I think $401K was too high.
Trial #2 A property that recently sold for $478,000 Zillow valued it at $412,000. They were pretty far off there.
Trial #3 I found the value of my own house on Zillow. The value they gave was within $20,000 to $30,000 of what I would list it for if I were to sell my own home. They were low by about 4% according to my estimate. I give them credit for coming pretty close on this one.
I do not like their wording on their home page: “Buyers: Compare home values to avoid overpaying”. If you are paying more than the value given by Zillow, you are not necessarily overpaying. No matter how sophisticated their algorithm, Zillow cannot account for condition of the property and subjective nature of a home purchase. The value of a property is what the market will bear. If someone is willing to pay a certain sum, that is what the property is worth. Zillow does explain how to use their “zestimate” appropriately. However, that wording to grab people’s attention is somewhat misleading.
When I do comps for a buyer or seller, I have firsthand information personally to make the appropriate adjustments of many different factors and with understanding of the market conditions. I don’t think Zillow can replace what a good real estate can do for you. Still, I admit it is a fun site to check.