The three ways to find your home's value without paying an appraiser
Your home's value is what someone would pay for it today, not what you paid for it or what you owe on the mortgage. You can find a rough estimate for free using online tools, get a more detailed picture from a real estate agent, or pay for a professional appraisal if you need an official number for a bank or court.
The free estimates are useful for your own planning—refinancing decisions, understanding your net worth, or deciding whether to sell. They are not precise enough for a mortgage lender or insurance company, which is why those institutions ask for an appraisal instead. But for most people, starting with a free estimate tells you whether your home has gained or lost value since you bought it, and by roughly how much.
Key Takeaways
- Zillow, Redfin, and Realtor.com publish free estimates based on recent sales of similar homes in your area, though these estimates can be off by 5 to 10 percent or more.
- A real estate agent will give you a market analysis for free as part of their job, and their estimate is usually more accurate than an online tool because they know your specific neighborhood and recent comparable sales.
- A professional appraisal costs $300 to $500 and is required by mortgage lenders; it is the only number a bank will accept for refinancing or a home equity loan.
- Your home's assessed value for property taxes is often much lower than its market value and should not be used to estimate what your home would sell for.
Using free online estimates to get a starting point
Zillow's Zestimate, Redfin's estimate, and Realtor.com's value estimate are all free and take about two minutes to pull up. You enter your address, and the tool shows you an estimated value based on recent sales of homes similar to yours—same size, age, condition, and neighborhood. These tools also show you the homes they used to calculate the estimate, so you can see whether the comparison makes sense.
The catch is that these estimates are often wrong. They work best in neighborhoods where homes sell frequently and are similar to each other—like a suburban development where most houses are the same age and size. They work poorly in neighborhoods with older homes, custom renovations, or few recent sales. Zillow itself says its estimates are within 5 percent of actual sale price about half the time, and off by more than 20 percent about 5 percent of the time. The other sites do not publish their accuracy rates, but they have similar limitations.
Use these estimates as a starting point, not a final answer. If three different sites show your home at $350,000, $365,000, and $340,000, you know the real value is probably somewhere in that range. If one site shows $250,000 and the others show $350,000, something is wrong with that first estimate—usually because the tool misread your home's size or condition from public records.
Getting a free market analysis from a real estate agent
A real estate agent will prepare a comparative market analysis (CMA) for free, even if you are not planning to sell. This is a document that shows recent sales of homes similar to yours, broken down by price, size, and what features sold with each one. The agent uses this to estimate your home's value, and because they know your neighborhood and have access to the local multiple listing service (MLS), their estimate is usually more accurate than an online tool.
To get a CMA, contact two or three agents in your area and ask them to prepare a market analysis. They will want to walk through your home so they can see its condition, updates, and any problems—things that online tools cannot see. The walk-through takes 30 to 45 minutes. You are under no obligation to list your home with them or sign anything. They do this work because some percentage of people who get a CMA end up selling later and hiring that agent.
The agent's estimate is usually within 3 to 5 percent of what your home would actually sell for, which is much better than an online tool. However, the CMA is still not an official appraisal and will not be accepted by a mortgage lender. It is useful for your own decision-making and for understanding what your home is worth in the current market.
When you need a professional appraisal
A professional appraisal is a formal document prepared by a licensed appraiser and is the only value a mortgage lender will accept. You need one if you are refinancing your mortgage, taking out a home equity loan, or involved in a legal dispute over your home's value. The appraiser inspects your home, compares it to recent sales, and produces a written report that includes photographs and detailed notes about the home's condition.
An appraisal costs between $300 and $500 depending on your home's size and your location. If you are refinancing, the lender usually orders the appraisal and charges you for it. If you are getting a home equity loan, the lender does the same. If you need an appraisal for your own reasons—to settle a divorce, to understand your net worth, or to challenge a property tax assessment—you order it yourself and pay out of pocket.
The appraisal takes one to two weeks from the time you order it. The appraiser will contact you to schedule a time to visit the home, spend 30 to 60 minutes inside and outside, and then spend several days writing the report. You receive a copy once it is complete.
Why your property tax assessment is not the same as your home's value
Your county assessor assigns a value to your home each year for property tax purposes. This assessed value is often much lower than what your home would sell for, and you should not use it to estimate your home's market value. The assessed value is set by the county, not by the market, and it is designed to be a fraction of the actual value—usually 50 to 80 percent, depending on your state.
Some states reassess homes every year; others do it every three to five years or only when the home sells. This means your assessed value can lag behind the real market by years. If you bought your home 10 years ago and the neighborhood has boomed, your assessed value might still be close to what you paid, while your home is now worth much more. The opposite is also true: in a declining market, your assessed value might be higher than what your home would sell for.
You can challenge your assessed value if you think it is wrong, but that is a separate process from finding out what your home is worth. If you want to know your home's actual market value, use the free online estimates, get a CMA from an agent, or order an appraisal.
How recent renovations and major problems affect your home's value
Online tools and CMAs are based on recent sales, so they assume your home is in average condition for its age and neighborhood. If you have done major renovations—a new kitchen, a finished basement, or a new roof—your home is probably worth more than the estimate. If your home has major problems—foundation issues, a roof that needs replacing, or outdated electrical—it is probably worth less.
The only way to know how much a renovation adds to your value is to ask the real estate agent during the CMA walk-through. They can tell you whether kitchens and bathrooms in your neighborhood are selling for more, and by how much. For major problems, the appraiser will note them in the appraisal report and may lower the value accordingly. Online tools cannot see inside your home, so they cannot account for either renovations or problems.
Understanding the difference between appraised value and sale price
When your home sells, the sale price is what the buyer and seller agreed on. The appraised value is what the appraiser says the home is worth. These are often different. A home might sell for $400,000 but appraise for $385,000, or vice versa. If you are buying a home and the appraisal comes in lower than the sale price, your lender will only loan you money based on the appraised value, and you will have to make up the difference in cash or renegotiate the price.
For your own purposes—figuring out what your home is worth right now—the appraised value is what matters. The sale price of a home is only useful if you are looking at recent sales of similar homes to compare to yours, which is what the CMA and online tools do.
Frequently Asked Questions
How often should I check my home's value?
Check it once a year if you are tracking your net worth or thinking about refinancing. If you are not planning any major financial moves, once every few years is enough. Home values change slowly in most neighborhoods, so checking every month will not tell you anything useful.
Can I use my home's value to borrow money?
Yes, but only if you have an appraisal. A lender will not accept an online estimate or a CMA. If you want to take out a home equity loan or refinance, the lender will order an appraisal as part of the process. You cannot borrow against your home without one.
What if the online estimates are very different from each other?
Check whether the estimates are using the same information about your home. If one tool thinks your home has three bedrooms and another thinks it has four, that explains the difference. Look at the comparable sales each tool used and see whether they make sense. If the comparables look wrong, the estimate is probably wrong too.
Do I need an appraisal to sell my home?
No. When you list your home for sale, you and your agent decide on a listing price based on the CMA and recent sales. The buyer's lender will order an appraisal, but that is their responsibility, not yours. You do not need to pay for an appraisal unless you are refinancing or taking out a loan.
Will my home's value go up or down?
That depends on your neighborhood, the broader real estate market, and how well you maintain your home. Some neighborhoods appreciate steadily; others stay flat or decline. You cannot predict the future, but you can track whether your neighborhood has been gaining or losing value over the past few years by looking at recent sales prices.