The main ways to find your home's value
You can find your home's value through three main routes: looking at what similar homes sold for in your area, getting a professional appraisal, or using online estimates. Each gives you a different kind of information, and they often produce different numbers. None of them is "the" value—they are all estimates based on different data and methods.
The most reliable single number usually comes from a professional appraiser, who physically inspects your home and compares it to recent sales nearby. But appraisals cost money and take time. If you need a quick sense of what your home might be worth, online tools and public sales records can give you a starting point for free.
Key Takeaways
- Professional appraisals are the most detailed but cost $300 to $500 and take one to two weeks.
- Public sales records show what similar homes actually sold for in your neighborhood, and you can search them free through your county assessor's office.
- Online home value tools like Zillow, Redfin, and Realtor.com give instant estimates but can be off by 5 to 20 percent depending on how much recent sales data exists in your area.
- Your county assessor's estimated value is public record but is usually lower than market value because it is used for property tax purposes, not sale price.
Checking public sales records in your county
Every home sale in your county becomes public record, and you can look up what similar homes sold for without paying anyone. Start at your county assessor's website—search for your address to see the assessed value, property details, and sometimes recent sales of comparable homes nearby.
The assessed value is not the same as market value. Assessors estimate value for property tax purposes, and that number is usually lower than what a home would sell for. But the sales records themselves are real: they show actual prices paid for actual homes. Look for homes similar to yours in size, condition, and location that sold in the last three to six months. If you find five or six comparable sales, you can estimate a range for your own home.
If your county assessor's site is hard to navigate, try your county clerk's office or a free public records site like Zillow's Zestimate data or your state's property tax database. Some counties charge a small fee to pull detailed records, but basic information is always free.
Using online home value tools
Websites like Zillow, Redfin, Realtor.com, and Trulia show estimated home values instantly. These tools pull data from recent sales, property records, and in some cases property tax assessments, then run them through algorithms to estimate what your home is worth today. The estimates are free and take seconds.
The catch is accuracy. Online estimates can be off by 5 to 20 percent or more, especially in areas where homes sell infrequently or where recent sales data is sparse. A tool might estimate your home at $350,000 when it would actually sell for $320,000 or $380,000. The estimates are most reliable in dense urban and suburban areas where many homes sell each month, and least reliable in rural areas or neighborhoods with few recent sales.
Use online tools as a starting point, not a final answer. Check the same home on two or three different sites—if they all estimate within 5 to 10 percent of each other, you are probably in the right ballpark. If they differ widely, that is a sign the data in your area is thin and you should rely more on actual comparable sales or get a professional appraisal.
Getting a professional appraisal
A professional appraiser visits your home, inspects it inside and out, measures the square footage, notes the condition of the roof and foundation, checks for recent renovations, and compares it to recent sales of similar homes. The result is a written appraisal report that lenders accept as proof of value. Appraisals typically cost $300 to $500 and take one to two weeks.
You need an appraisal if you are refinancing a mortgage, applying for a home equity loan, or settling an estate or divorce. If you are just curious about your home's value, an appraisal is usually overkill. But if you need a number that a bank or court will accept, an appraisal is the standard.
Find an appraiser through your lender (if you are refinancing, they often order it for you), your state's appraiser licensing board, or a local real estate agent who can recommend one. Make sure the appraiser is licensed in your state—requirements vary, but all states require licensing and continuing education.
Why different sources give different numbers
Your county assessor, Zillow, a real estate agent's comparative market analysis, and a professional appraiser may all give you different numbers for the same home. This is normal and does not mean anyone is wrong.
The assessor estimates value for tax purposes and updates it infrequently—sometimes only every few years. Online tools use algorithms and may not account for recent renovations or neighborhood changes. Real estate agents prepare comparative market analyses to help price a home for sale, and they have local knowledge but also a financial interest in the listing. Professional appraisers are trained and licensed, but they also make judgment calls about condition and comparable sales.
If you see a wide range, the truth is probably somewhere in the middle. If you are selling, a real estate agent's analysis and recent comparable sales are most useful. If you are refinancing, your lender will order an appraisal and that becomes the official number for that transaction. If you are just trying to understand your home's value for your own planning, online estimates plus public sales records usually give you enough information.
What to do if you need a value for taxes or legal reasons
If you need a home value for property tax appeals, insurance, estate settlement, or divorce proceedings, the type of valuation that counts depends on the situation. For property tax appeals, your county assessor's office can explain what evidence they will accept—usually comparable sales or an appraisal. For insurance, your insurer may order their own appraisal or accept a recent appraisal you provide. For estate or divorce purposes, the court often requires a professional appraisal.
Do not rely on online estimates for any of these situations. Talk to the relevant office—your assessor, your insurance company, or your attorney—about what documentation they need before you spend money on an appraisal.
Frequently Asked Questions
How often should I check my home's value?
If you are just tracking your home for personal knowledge, once a year is plenty. If you are thinking about selling or refinancing, check it every few months so you see how the market is moving in your area. After major renovations, check it again to see if the value increased.
Is my county assessor's value the same as what my home is worth?
No. The assessor's value is used to calculate property taxes and is usually lower than market value. It is a useful data point but not the price your home would sell for. Compare it to recent sales of similar homes to get a better sense of actual market value.
Can I use an online estimate to refinance my home?
No. Lenders require a professional appraisal ordered through them. Online estimates are free and fast but not accepted as proof of value for any financial transaction. If you are refinancing, your lender will order and pay for the appraisal.
What if online tools show very different values for my home?
Check the dates of the sales data each tool is using—older data produces less accurate estimates. Look at comparable sales yourself through your county assessor's site. If estimates differ by more than 10 to 15 percent, your area probably does not have enough recent sales data for online tools to be reliable, and you should rely more on actual comparable sales or get an appraisal.
Do I need to pay for a home value estimate?
No. Public sales records are free through your county assessor. Online estimates are free. You only pay if you want a professional appraisal, which costs $300 to $500 and is required only for mortgages, refinances, or legal proceedings.