If you have typed your address into an online home value tool, you already know the number it gives you does not always match what you expect.
Online home value estimates are a helpful starting point, but they are built from public data and algorithms, not a real look at your home. A comparative market analysis from an agent is far more accurate because it accounts for your home’s actual condition, updates, and the true comparable sales in your specific area.
What online estimates actually use
Online home value tools pull from public records, tax assessments, and recent sales data in your area, then run that information through an algorithm. It is a useful snapshot, but it is built without ever stepping inside your home.
Why the same home can get very different numbers
Because each website uses a different algorithm and different data sources, it is common to type in the same address on three different sites and get three different numbers, sometimes tens of thousands of dollars apart. That range alone should tell you these tools are estimates, not appraisals.
What a CMA includes that an algorithm cannot see
A CMA starts with the same idea, comparing your home to similar homes that have sold recently, but it goes much further. I physically look at your home, note its condition, layout, updates, and any features that set it apart, then adjust the comparable sales to reflect those real differences. An algorithm cannot walk through your kitchen and see that you updated the countertops last year.
Why condition and updates matter more than the tools account for
Updates matter, but so does everything the tool cannot see, deferred maintenance, a basement that looks finished in tax records but is not, or a layout that does not flow the way buyers expect. These details move your value up or down in ways no automated tool can catch.
How timing and hyperlocal trends affect your number
Real estate moves differently street by street, sometimes block by block. An online tool applies broader trends across a wider area, while a CMA reflects what is actually happening in your specific neighborhood right now, including how fast homes are selling and what buyers are currently willing to pay.
When an online estimate can still be useful
None of this means online estimates are useless. They can be a reasonable starting point if you are just beginning to think about selling and want a general sense of where you stand. Just do not treat that number as the price you should list at.
What I recommend before you rely on any number
Before you make any decision about pricing, get a real CMA. It costs you nothing, takes into account the details that actually affect your value, and gives you a number you can trust when it is time to list.
FAQ
Q: Why did three different websites give me three different values for my home?
A: Each site uses its own data sources and algorithm, and none of them have actually seen your home in person, which is why the numbers can vary significantly.
Q: Is a CMA the same thing as an appraisal?
A: No. A CMA is prepared by an agent to help set a list price, while an appraisal is a formal valuation typically ordered by a lender during a purchase transaction.
Q: How much does a CMA cost?
A: I provide a full CMA at no cost when you are considering listing your home.
Q: Should I ignore online estimates completely?
A: You do not need to ignore them, just understand they are a general starting point and not a substitute for a real evaluation of your home.
Q: How often should I check my home’s value if I am not ready to sell yet?
A: Checking in every so often is fine, but the number that matters most is the one you get right before you decide to list.
If you are curious what your home is really worth, I would rather show you than have you guess from an online tool. Reach out and I will put together a real comparative market analysis based on your home and what is actually happening in your neighborhood.