Is there a reason my home’s assessed value differs compared?

Yes, and here is the part that surprises most owners. Those two numbers are supposed to differ. Assessed value is not a bad estimate of market value. It is a completely different figure, built for a different purpose, on a different clock. Barrett laid out the core of it well already, so let me build on it rather than repeat it. Your assessor is not trying to tell you what your house is worth today. The assessor's job is to spread a tax burden across every parcel in the jurisdiction, fairly and cheaply. That gets done through mass appraisal, meaning models run across sales data and recorded property characteristics for thousands of homes at once. Nobody walks your house. Nobody sees that you redid the kitchen or that the roof is at the end of its life. Then there is the arithmetic, which almost nobody explains. In most places assessed value is not market value at all, it is market value multiplied by a statutory assessment ratio. Tennessee assesses residential property at 25 percent of market value, so a $230,000 home carries a $57,500 assessed value on the books. Washington runs the opposite way and assesses at 100 percent. So if your assessment looks absurdly low compared to what your neighbor's house just sold for, the first thing to check is whether your state applies a ratio at all. Your tax bill is that assessed figure multiplied by the local tax rate, sometimes expressed in mills. Two towns can assess identically and bill very differently. There is a third mechanism worth knowing, because it explains the widest gaps. Some states cap how fast an assessment can rise. In California, where I work, Proposition 13 sets the assessment at what you paid when you bought and then caps annual growth at 2 percent for as long as you own it. A family that bought in 1998 can be sitting on an assessed value a fraction of what the house is worth now, and that is not an error, that is the statute working exactly as designed. Other states run homestead caps or similar limits. Whether your state has one is worth ten minutes of reading. So a gap is normal. What you actually want to know is whether your gap runs the wrong direction. If your assessed value is lower than market value, that is common and it is in your favor. Leave it alone. It does not cap what a buyer will pay and it will not follow you to closing. If your assessed value is higher than market value, or higher than comparable homes on your street after you adjust for the ratio, you are overpaying and you should appeal. Here is how that works. Every jurisdiction mails an assessment notice, sometimes called a notice of value. That document is the trigger, not your tax bill, and the appeal window is short. Most places give you somewhere between 30 and 90 days from the notice. King County, Washington runs to July 1 or 60 days from the mailing date, whichever is later. Nashville's informal review this year closed on April 17. Miss it and you wait a full year. What wins an appeal is evidence, not argument. Pull three to five recent sales of genuinely comparable homes, same neighborhood, similar size, age and condition. Photograph anything that hurts value, a failing roof, foundation cracks, an original kitchen, a busy road. Correct any factual error in the assessor's record, because wrong square footage, a bathroom you do not have, or a garage you never built are the easiest wins there are. And check the uniformity angle separately, meaning whether similar homes near you are assessed lower than yours. In many jurisdictions that is its own independent ground for relief. Studies put the success rate for homeowners who actually file somewhere around 40 to 60 percent, which is far better odds than most people assume. One reassurance, because owners ask me this constantly. Getting your assessment reduced does not reduce what your home sells for. Buyers and their appraisers do not price off the tax roll. You are not talking down your own asset. A note on timing, since this question was originally posted back in 2022. Values in most markets moved hard between 2022 and 2026, and reassessment cycles run one to three years behind. That means the gap between your assessed figure and your market figure is probably wider now than when you first noticed it, in whichever direction your market went. Honest caveat. Ratios, caps, exemptions and deadlines are all set at the state and county level and they vary enormously. Nothing above substitutes for pulling your own assessment notice and your county assessor's appeal instructions. I am Zoltan Peresztegi and I work in Los Angeles, the South Bay and on the Palos Verdes Peninsula. If you tell me where your property is, I am happy to point you toward a good local agent who can run a real market analysis for you, which is the document you will need if you decide to appeal. That costs you nothing. Zoltan

Differs compared to market value you mean? If so, market value and assessed value are two different things. Market value is the home of your value today, while assessed value is used to determine your property taxes. Keith Jean-Pierre Managing Principal The Dapper Agents Real Estate Operations in ALL 50 States

Your home's assessed value and its market value are two different numbers calculated for two different purposes, and they almost never match. Assessed value is determined by your county assessor for property tax purposes. It's based on a mass appraisal of properties in your area using formulas, not an individual inspection of your home. Many counties assess at a percentage of market value, and assessments are often updated on a cycle of one to three years. This means your assessed value can lag behind or ahead of what your home would actually sell for. Market value is what a willing buyer would pay a willing seller in the current market. It's influenced by recent comparable sales, the condition of your home, buyer demand, interest rates, and dozens of other factors that change in real time. Market value is what an appraiser determines when a lender orders an appraisal for a purchase or refinance. A lower assessed value than market value is common and actually works in your favor because it means lower property taxes. A higher assessed value than market value means you might be overpaying on taxes and could have grounds to appeal your assessment. Don't use your assessed value to price your home for sale. Use a CMA or appraisal based on actual recent sales in your area.

Assessed value is used for property taxes and may lag behind current prices. It may also include exemptions or mass-valuation methods. Market value is what a buyer will pay today and changes with supply, demand, condition, upgrades, and interest rates. It is completely normal for the two values to be different.

Your assessed value is not your market value. Your assessed value is typically a fraction of your market value used for calculating your property tax amount.

The assessed value of a home is an estimate that the city/town uses to provide a value to tax the property and other similar in the area. Comparable value uses data based on recent sales in the area within a certain distance, timeframe, and similar features to your property to determine the value your home could sell for on today’s market. Briahna Savage Licensed Realtor NY & PA [email protected]