The most direct way is to check your county assessor's website or ask a real estate agent for a comparative market analysis
Your home's value is not a single number — it depends on who is measuring it and why. A tax assessor, a mortgage lender, an insurance company, and a real estate agent will all give you different figures, and all of them can be correct for their own purposes. The fastest route to a ballpark number is your county assessor's office, which publishes assessed values online. The most realistic picture of what your home would sell for comes from a real estate agent's comparative market analysis, which looks at what similar homes in your neighborhood sold for recently.
If you are selling or refinancing, you will need a professional appraisal — a licensed appraiser will visit your home and produce a formal document. If you just want to know the approximate value for your own planning, the free tools below will get you there without paying for an appraisal.
Key Takeaways
- Your county assessor publishes home values online for free, though these figures are used for property taxes and may not match what your home would sell for.
- Real estate agents provide comparative market analyses at no cost, showing what similar homes sold for in your area within the last few months.
- Online home value estimators like Zillow, Redfin, and Realtor.com use public sales data and tax records but can be off by thousands of dollars, especially in rural areas or unusual homes.
- A professional appraisal costs $300 to $500 and is required by lenders before they will refinance or approve a mortgage, but is not necessary just to know your home's approximate worth.
- Your home's value changes based on local market conditions, recent sales nearby, the condition of your home, and upgrades you have made.
Finding your county assessor's home value estimate
Every county in the United States maintains a public record of assessed home values. This is the value the county uses to calculate your property tax bill. To find it, search online for "[your county name] assessor" or "[your county name] property appraiser" — the title varies by state. Most counties now have searchable databases on their websites where you can enter your address and see the assessed value, the lot size, the year built, and sometimes recent sales history.
The assessed value is usually lower than what your home would actually sell for, because assessors do not always update values every year and they use different methods than the real estate market does. In some states, assessed values are deliberately kept below market value by law. Use this number as a floor, not a ceiling — it tells you the minimum the county thinks your home is worth, but the actual market value is often higher.
Getting a comparative market analysis from a real estate agent
A real estate agent can pull together a list of homes similar to yours that sold in your neighborhood within the last three to six months. This is called a comparative market analysis, or CMA. The agent will look at homes with similar square footage, lot size, number of bedrooms and bathrooms, age, and condition, then show you what those homes sold for. This is the closest thing to a real market value without paying for an appraisal.
You do not have to be selling your home to get this. Call or email a local real estate agent and ask for a CMA. Most agents will provide one for free because they hope you might list your home with them later. If you are uncomfortable contacting an agent, you can also look at recent sales in your area yourself using county records or sites like Zillow or Realtor.com, though an agent's analysis will be more thorough because they have access to the local MLS (Multiple Listing Service) database.
Using online home value estimators
Websites like Zillow, Redfin, Realtor.com, and Trulia publish estimated home values based on public sales data, tax records, and their own algorithms. These estimates are free and updated regularly. Search for your address on any of these sites and you will see a number labeled "Zestimate" (on Zillow), "Redfin Estimate," or similar. These tools are useful for a quick sense of your home's ballpark value, but they are not always accurate.
Online estimates tend to be less reliable for homes that are unusual, have been heavily renovated, sit on a large or small lot compared to neighbors, or are in rural areas where sales are infrequent. A home that sold recently will have a more accurate estimate than one that has not sold in many years. If you see a huge difference between what one site estimates and another, that is a sign the estimate is uncertain. Use these as a starting point, not a final answer.
When you need a professional appraisal
A professional appraisal is a formal document prepared by a licensed appraiser who visits your home in person. Appraisers are trained to assess condition, compare to recent sales, and account for upgrades or damage. An appraisal typically costs $300 to $500 depending on your home's size and location. You will need one if you are refinancing a mortgage or applying for a new mortgage, because lenders require it before they will approve the loan.
If you are just trying to find out what your home is worth for your own knowledge — to decide whether to sell, to understand your net worth, or to plan for the future — you do not need a professional appraisal. The county assessor's value, a real estate agent's CMA, and online estimates together will give you a solid range. Save the cost of an appraisal for when a lender requires it.
What affects your home's value
Your home's value depends on factors both inside and outside your control. Location is the largest factor — the same house in two different neighborhoods can have very different values. Recent sales of similar homes nearby, the condition of the local school district, proximity to jobs or transit, and the overall health of the local real estate market all matter. Within your home, the number of bedrooms and bathrooms, square footage, age of the roof and major systems, and the condition of the interior all affect value.
Upgrades like a new kitchen, updated bathrooms, or a finished basement can increase value, though you will not always recoup the full cost of the upgrade when you sell. Deferred maintenance — a roof that needs replacing, a foundation with cracks, outdated electrical systems — will lower value. If you have made significant upgrades or repairs, mention them when you ask a real estate agent for a CMA, because they may not show up in public records.
Understanding the difference between assessed value, appraised value, and market value
These three numbers often confuse people because they sound like they should be the same thing. Assessed value is what your county says your home is worth for property tax purposes. Appraised value is what a licensed appraiser determines after visiting your home and comparing it to recent sales — this is what lenders use. Market value is what a buyer would actually pay for your home right now, which may be higher or lower than either of the other two depending on how fast the market is moving and how motivated the buyer is.
For most homeowners, market value is what matters most. That is what you would get if you sold. The assessed value is usually lower and is only used for taxes. The appraised value falls somewhere in between and is what lenders care about. When you see your home's value quoted in different places, check which type of value is being reported.
Frequently Asked Questions
How often does my home's assessed value change?
This varies by state and county. Some counties reassess every year, others every three to five years, and a few only when the home is sold or significantly improved. Check your county assessor's website to see their schedule. Even if your county reassesses annually, the assessed value may not change every year if the assessor determines the value has not shifted.
Can I dispute my home's assessed value if I think it is too high?
Yes. Most counties allow homeowners to file a formal appeal or challenge to their assessed value, usually once per year. The process and deadline vary by county — search "[your county name] assessment appeal" to find the specific steps and dates. You will typically need to show evidence that your home is worth less than the assessed value, such as a recent appraisal or comparable sales data.
Will checking my home's value hurt my credit score?
No. Looking up your home's value on a county website, real estate site, or through a real estate agent does not affect your credit. A credit check only happens when you formally apply for a loan or credit product. Getting a professional appraisal also does not hurt your credit — only the mortgage application itself triggers a credit inquiry.
What if my home is new and there are no comparable sales yet?
New homes are harder to value because there is no sales history to compare to. The builder's asking price is a starting point, but the actual market value may be higher or lower depending on demand. A real estate agent familiar with new construction in your area can give you the best estimate. Online estimators may be unreliable for brand-new homes until a few similar homes have sold nearby.
Do I need to tell my lender if my home's value goes up?
No. Your lender does not need to know about changes in your home's value unless you are refinancing or applying for a home equity loan. If you are simply paying your mortgage as agreed, changes in value do not affect your loan. You only need a new appraisal if the lender requires one as part of a refinance application.