The most direct ways to find your home's value
You can find your home's value through three main routes: checking your county assessor's records (free), using online valuation tools (free), or paying for a professional appraisal (typically $300 to $500). The county assessor's estimate is public record and updated annually, though it often lags behind market conditions. Online tools like Zillow, Redfin, and Realtor.com pull from recent sales data and give you a range rather than a single number. A professional appraisal is the most accurate but also the most expensive, and it's what lenders require when you refinance or take out a home equity loan.
Which route you choose depends on why you need the value. If you're curious about your home's worth or thinking about selling someday, the county assessor's records and free online tools are enough to start. If you're refinancing, applying for a home equity line of credit, or settling an estate, you'll likely need a formal appraisal.
Key Takeaways
- Your county assessor's office publishes property values online for free, updated once a year, though these figures often underestimate what your home would sell for today.
- Free online tools like Zillow and Redfin give you a range based on recent comparable sales in your area, but they are estimates, not official valuations.
- A professional appraisal ordered through a lender costs $300 to $500 and is required for refinancing or home equity loans.
- The assessed value, market value, and appraised value are three different numbers, and knowing which one you need prevents wasted time and money.
Checking your county assessor's records online
Every county in the United States maintains a public record of property values called the assessed value. This is the value the county uses to calculate your property taxes. You can look up your home's assessed value for free by visiting your county assessor's website and searching by address or parcel number.
To find your county assessor's office, search "[your county name] assessor" plus your state. Most counties now have searchable online databases. You'll typically enter your address and see the assessed value, the year it was assessed, and sometimes a breakdown of the land value versus the building value. Some counties also show recent sales of comparable homes nearby.
Keep in mind that assessed values are usually lower than what your home would actually sell for, and they're updated only once a year. If your home has been significantly improved or if the market has shifted, the assessed value may be outdated. It's a good starting point, but not a market value.
Using free online valuation tools
Websites like Zillow, Redfin, Realtor.com, and Trulia publish estimated home values called "Zestimates" (Zillow), "Redfin Estimates," or similar names. These tools pull data from recent home sales in your area, property records, and tax assessments to calculate a range. You enter your address, and the tool shows you an estimated value, usually with a margin of error (for example, $450,000 to $480,000).
These estimates are free and updated frequently—sometimes monthly—so they reflect market changes faster than county assessor records. However, they are not official valuations. The margin of error can be wide, especially in neighborhoods where homes sell infrequently or where properties vary widely in condition and features. A tool might estimate your home at $500,000 when it would actually sell for $480,000 or $520,000.
Use these tools to get a rough sense of your home's market value and to compare it against other homes in your neighborhood. If you see a big difference between what one tool says and another, that's a sign the estimate is uncertain and you should not rely on it alone for major financial decisions.
Getting a professional appraisal
A professional appraisal is an official valuation performed by a licensed appraiser who inspects your home in person, measures it, photographs it, and compares it to recent sales of similar homes in your area. The appraiser produces a written report that lenders accept as proof of value. A typical appraisal costs between $300 and $500, depending on your home's size and location.
You do not order an appraisal directly in most cases. If you're refinancing a mortgage, the lender orders and pays for the appraisal as part of the loan process. If you're applying for a home equity line of credit, the lender also typically orders it. If you want an appraisal for your own purposes—to settle an estate, to support a property tax appeal, or to know your home's value before listing it—you can hire an appraiser independently. Search for "licensed appraiser" in your state plus your county to find one.
An appraisal is more accurate than an online estimate because it accounts for your home's specific condition, upgrades, and location details that a computer model cannot see. However, appraisals can also vary. Two appraisers might value the same home differently based on which comparable sales they choose and how they weight different factors.
Understanding assessed value versus market value versus appraised value
These three numbers often confuse homeowners because they serve different purposes and are calculated differently. Your assessed value is what your county uses to calculate property taxes. It is usually the lowest of the three and is updated once a year. Your market value is what your home would sell for if you listed it today. Online tools estimate market value. Your appraised value is what a licensed appraiser determines after inspecting your home; lenders use this number to decide how much they will lend you.
If you're refinancing, the lender cares about appraised value. If you're curious about your home's worth for personal planning, market value (from online tools) is what matters. If you're disputing your property tax bill, assessed value is what you're challenging. Knowing which number you need saves you time and money.
When to use each method
| Your Situation | Best Method | Cost |
|---|---|---|
| Curious about your home's worth | County assessor records + online tools | Free |
| Planning to sell or refinance soon | Online tools + comparative market analysis from a real estate agent | Free to $500 |
| Refinancing a mortgage | Professional appraisal (ordered by lender) | $300–$500 (lender pays) |
| Settling an estate or disputing taxes | Professional appraisal (you order) | $300–$500 |
| Applying for a home equity loan or line of credit | Professional appraisal (ordered by lender) | $300–$500 (lender pays) |
What affects your home's value
Your home's value depends on location, size, age, condition, and what similar homes have sold for recently. A home in a neighborhood where prices are rising will be worth more than an identical home in a neighborhood where prices are falling. Recent renovations, especially kitchen and bathroom updates, increase value. A home with deferred maintenance—a roof that needs replacing, a foundation problem, or outdated systems—will be valued lower than one in good condition.
Market conditions also matter. In a seller's market where homes sell quickly and prices are climbing, your home's value may be higher than it was six months ago. In a buyer's market where homes sit longer and prices are softening, the opposite is true. This is why online estimates change over time and why an appraisal done a year ago is no longer reliable.
Frequently Asked Questions
Is my county assessor's value the same as my home's market value?
No. Assessed value is usually lower than market value because it's used for property tax purposes and is updated only once a year. Market value is what your home would sell for today. If your home has appreciated or been improved since the last assessment, the assessed value will underestimate your home's worth.
Can I dispute my county assessor's value?
Yes. Most counties allow you to file a formal appeal if you believe your assessed value is too high. The process and deadline vary by county, so search "[your county name] assessment appeal" to find the rules and forms. You may need to provide evidence like a recent appraisal or comparable sales data.
How often do online valuation tools update?
Most update monthly or quarterly as new sales data becomes available. Zillow, Redfin, and Realtor.com all refresh their estimates regularly, but the frequency depends on how active the real estate market is in your area. In neighborhoods where homes sell frequently, estimates update more often.
Do I need an appraisal to sell my home?
No. When you list your home, a real estate agent will provide a comparative market analysis (CMA) based on recent sales of similar homes. A professional appraisal is not required to sell, though some sellers order one to support their asking price or to understand their home's value before listing.
What if my appraisal comes in lower than I expected?
If you're refinancing, a low appraisal can delay or prevent the loan. You can ask the appraiser to reconsider if you believe they made an error, or you can order a second appraisal (though you'll pay for it). If you're selling, a low appraisal from a buyer's lender does not change your home's actual value—it may mean you need to lower your asking price to match what the lender will finance.