If you’ve ever searched for homes online, chances are you’ve come across Zillow’s Zestimate®. It’s a quick way to get a ballpark idea of a home’s value, but how accurate is it really? Many homeowners are surprised to learn that a Zestimate can be off by tens of thousands of dollars—and sometimes more.
Here’s what you need to know about Zillow estimates, and better ways to discover your home’s true value.
What Is a Zestimate?
Zillow uses an algorithm that pulls data from public records, recent sales, tax assessments, and user-submitted information to calculate a home’s estimated value.
While it’s a powerful tool, it’s still just an automated estimate. It doesn’t consider important factors like upgrades, condition, or unique neighborhood features that can drastically change a home’s worth.
Why Zillow Estimates Can Be Misleading
- Outdated or Incomplete Data – If your property records aren’t up to date (for example, after renovations), Zillow may undervalue your home.
- Local Market Differences – Algorithms can’t always keep up with fast-moving markets or neighborhood-specific trends.
- No In-Person Evaluation – A Zestimate doesn’t see your new kitchen, upgraded flooring, or stunning backyard.
- Wide Margin of Error – Zillow themselves note that their estimates can be off by as much as 5–10% or more in many areas.
Better Ways to Find Out What Your Home Is Worth
If you’re serious about knowing your home’s true value—especially if you’re thinking of selling—there are more reliable options:
1. Comparative Market Analysis (CMA)
A real estate agent (like me!) can prepare a CMA, which compares your property to recently sold homes in your neighborhood with similar features. This gives you a more accurate snapshot of what buyers are willing to pay right now.
2. Professional Appraisal
Hiring a licensed appraiser gives you a detailed, unbiased report of your home’s value. Lenders require this step during the mortgage process, but sellers can also order one for extra confidence.
3. Market Trends + Local Expertise
Numbers don’t tell the whole story. An experienced real estate agent understands buyer demand, neighborhood desirability, and seasonal trends—factors that no algorithm can fully capture.
The Bottom Line
Zillow’s Zestimate is a helpful starting point, but it’s not the final word on your home’s value. If you’re curious about what your home is really worth in today’s market, the best approach is to combine data with professional insight.
Thinking of Selling?
I’d be happy to prepare a free, no-obligation home value report for you. That way, you’ll know exactly where you stand before making your next move. I service Orlando, Fl and the surrounding areas.
Delaney H

