Read What The Online Portals Have To Say
You see the online valuation tools everywhere these days. There is even one right here on this very website. These tools are nice to use but they are all flawed. I have written about this before and did some research on my local market to prove that these models don't get it right. There are certain objective and subjective criteria that go into valuing a home. The professional human adds subjective data to the mix. The automated tools are missing that key factor.
Even the major tools used to provide home values will tell you that they are not as accurate as a real estate professional. Now you can see what they all have to say in one place. Check out this compilation of the disclaimer that comes with the online valuation tools.
They are nice to get a rough estimate, but when you really want to know what your home is worth, ask a pro.