Appealing Property Taxes After Buying a House

When you buy a house, the price you paid and the number your county puts on your tax notice do not have to match, and in some states they are not even supposed to. California generally resets your assessment to a new Proposition 13 base year value at your purchase price, but a supplemental assessment can still arrive on its own schedule with its own short appeal window. Georgia no longer caps the following year's assessed value at your sale price, so a new buyer can be assessed above what they paid. Florida resets your home's Save Our Homes cap the moment it changes hands, so a longtime seller's protected number becomes a fresh "just value" for you on the next January 1.

What a purchase actually does to your assessment

Every state values property as of a set date each year, January 1 in California, Georgia and Florida alike. A sale does not move that valuation date, but it usually changes the number the county starts from, and how much room you have to challenge the result depends entirely on the state. The complete guide to appealing your property taxes covers the two arguments that work everywhere: a record error, or comparable sales below your assessed value. A recent purchase changes which of those arguments fits your situation, and in each of these three states it adds something specific on top.

California: a new base year value, with its own appeal clock

Under Proposition 13, California resets a property's base year value at the date ownership changes. From there, it can grow by no more than the lower of the California Consumer Price Index or 2 percent a year, the same limit that governs every California assessment. If the resulting number matches what you paid in an arm's-length sale close to the valuation date, there is usually not much to argue about.

The complication is timing. Many counties bill the change-in-ownership reassessment as a separate supplemental notice, and the California State Board of Equalization's Publication 30 states that a supplemental or escape assessment carries its own 60-day window, measured from the date the notice was sent. That is a different clock from the regular filing period, and it is easy to miss if you are watching the wrong calendar. You can still use the regular filing period in later years, which under Cal. Rev. and Tax. Code section 1603(b) runs from July 2 and closes September 15 in some counties and November 30 in others.

Publication 30 also recommends meeting informally with the assessor before filing a formal application, whether the disagreement is about the purchase-year reassessment or a later year's value.

Georgia: the sale price is no longer the ceiling

Georgia used to treat a home's sale price as a ceiling: the county could not assess the following year's value above what a buyer paid. House Bills 581 and 92 changed that. Chatham County's Board of Assessors said it plainly: "Under new legislation (HB 581 & HB 92), the sale price is no longer the maximum allowed value for the following tax year." A new owner can now open a Notice of Assessment that sits above the closing statement.

That does not make the new number correct. Georgia defines fair market value as "the amount a knowledgeable buyer would pay for the property and a willing seller would accept for the property at an arm's length, bona fide sale" (O.C.G.A. section 48-5-2), and the county assesses 40 percent of that figure (O.C.G.A. section 48-5-7). If your closing was a genuine arm's-length sale near January 1 and the new notice runs well above it, that gap is exactly the kind of evidence a Georgia appeal is built on. You have 45 days from the date printed on the Notice of Assessment to file with the county Board of Tax Assessors, on form PT-311A or, in counties like Gwinnett, a letter that identifies the property. The Georgia appeal guide covers the three hearing routes and what happens to your bill while the case is pending.

Florida: the cap starts over

Florida's Save Our Homes cap only protects a continuing homestead. Under Fla. Stat. section 193.155(1), a homesteaded property's assessed value cannot grow by more than the lower of 3 percent or the change in the Consumer Price Index each year, no matter how far market value rises. That protection travels with the owner, not the parcel. In plain terms, when the home sells, the cap the previous owner built up does not pass to you: your assessed value moves toward the property's full just value as of the next January 1, without the gap the seller had accumulated.

If you owned and homesteaded a different Florida property before this purchase, portability under Fla. Stat. section 193.155(8) lets you transfer up to $500,000 of the difference between assessed and just value onto your new homestead. It only helps with a prior Florida homestead, not a first-time Florida buyer or someone moving in from out of state.

To start your own homestead exemption and your own Save Our Homes clock, apply by March 1 of the year you want it to take effect, under Fla. Stat. section 196.011(1). Homestead exemption vs. appeal covers the exemption amounts and how they interact with a value appeal. If you think the just value the appraiser assigned after your purchase runs higher than what comparable homes were selling for, you can still petition the Value Adjustment Board within 25 days of your TRIM notice; the Florida VAB guide walks through the full process.

Comparison across the three states

Purchase price is evidence, not a guarantee

A closing statement is one of the strongest pieces of evidence you can bring to an appeal, but only under conditions. The sale has to be arm's length and bona fide, the same standard Georgia's statute uses to define fair market value (O.C.G.A. section 48-5-2). It also has to sit close to the state's valuation date, January 1 in all three states, since a sale that closed months away from that date reflects a different market than the one the assessor was required to measure.

None of the three states treats your price as an automatic ceiling once those conditions are not met, and Georgia now says so explicitly for the tax year after a sale. If your purchase was a distressed sale, a sale between relatives, or a price that bundled in furniture or other personal property, the county is not required to adopt your number.

Bring the same approach the pillar guide describes for any appeal: your purchase price is one data point, and sales of other, similar homes around the same date corroborate it or undercut it.

When renovations change the picture

If you have already put money into the house since closing, a higher assessment is not automatically wrong. New construction, an addition, or a substantial remodel is exactly the kind of change a county is entitled to reflect in your assessed value, on top of whatever base your purchase set. Before you appeal a number that looks high, pull your county's current property record and check that it describes your home as it exists now, not as it existed at closing. If the record overstates unfinished work, that is still a record error worth raising; if it accurately reflects finished work, the higher number is doing what it is supposed to do.

Common questions

Does my county have to assess my home at what I paid for it?

No. California generally will, if the sale was arm's length and close to the valuation date, but Georgia and Florida do not treat your price as a cap. Georgia's HB 581 and HB 92 removed that ceiling for the year after a sale, and Florida assesses a new owner at full just value once the seller's cap resets.

I got a supplemental tax bill in California that I did not expect. Can I still appeal it?

Yes. A supplemental or escape assessment in California carries its own 60-day appeal window measured from the notice, separate from the regular filing period described in the California deadline guide.

If I had a homestead on my last Florida home, does it carry over?

Part of it can. Florida's portability provision, Fla. Stat. section 193.155(8), lets you transfer up to $500,000 of the gap between your old home's assessed and just value to your new homestead. You still have to apply for the new homestead exemption by March 1.

Should I appeal before or after I finish renovating?

Base an appeal on the home's condition as of the state's valuation date, January 1. If a renovation was not finished by then, the county should not be assessing it as finished; check your property record, described in how to read your assessment notice.

Does a high purchase price hurt me if I want to appeal later?

It can be used as evidence against you, especially if the sale was recent and arm's length. Gather comparable sales rather than relying only on your closing statement. A free review of your address is a place to start if you want a second opinion.