The Market Timing Opportunity

Property tax assessments have a built-in lag. Assessors use historical sales data to set values, which means market corrections don’t show up in assessments until 1–2 years later. The 2026 opportunity: Markets that peaked in 2022–2023 and have since corrected — Tampa, Austin, DC metro, parts of Phoenix and Denver — have assessments that still reflect 2022–2023 peak values. Tampa: prices down ~10% year-over-year in 2026; assessments not fully adjusted. Austin: some submarkets down 8–12% from peak; appraisal districts lagging. DC metro: prices down 6.1%; DOGE-driven softening not yet in assessments. Even nationally: home values are up only 0.9% while assessments rose 18% over 5 years. The gap between assessment and market reality is the appeal opportunity. If your home was assessed at 2022 peak values and your market has since moderated: you are almost certainly overassessed and have a strong appeal case right now.

Step 1: Get Your Property Record Card

The Property Record Card (also called the Property Assessment Card or Parcel Data Sheet) is the county’s official record of your property. It contains: square footage, bedroom and bathroom count, lot size, year built, and any improvements recorded. This is where 15–20% of all successful appeals begin. Clerical errors are the #1 cause of overvaluation and the easiest wins in the system. Examples of errors that win immediate adjustments: County says 4 bedrooms; you have 3. County shows 2,500 sqft; your home is 2,200 sqft. Finished basement recorded; basement is unfinished. Pool listed; no pool exists. How to get it: Go to your county assessor’s website and search your address; the Property Record Card is public information. Print it. Walk through every line against your actual home. If you find an error: document it with photos, blueprints, or your purchase closing documents and report it to the assessor’s office immediately. Many counties will correct clerical errors without a formal appeal.

Step 2: Check Your Assessment Against Comparable Sales

If your Property Record Card is accurate but you believe your assessed value is still too high, the evidence that wins is comparable sales. Find 3–5 recent sales (within the last 6–12 months) of homes similar to yours in: square footage (within 10–15%); bedroom and bathroom count; lot size; age and condition; same neighborhood or ZIP code. The 91.8% rule: Texas Comptroller data shows 91.8% of homeowners who won appeals used comparable sales data as their primary evidence. If those comparable sales show a lower market value than your assessed value: you have a strong appeal. Sources for comparable sales: Your county assessor’s website (public sales records); Zillow and Redfin (sold listings, not just active); a real estate agent can pull precise MLS data (the same data used for listing CMAs). Note: ARBs and review boards do NOT accept Zestimates or automated valuation models as evidence. You need documented actual sales.

Step 3: Document Your Property’s Condition

Mass appraisals assume average condition for a home of your age. If your home has issues that reduce market value — roof needing replacement, foundation issues, HVAC at end of life, water damage, deferred maintenance — document them. Evidence that counts: dated photographs of defects and deferred maintenance; contractor estimates for repairs; inspection reports; permits showing unpermitted work (or lack of permits for improvements). The comparison to make: what would a buyer pay for your home in its current condition vs the comparable sales you’re using? If your home needs a $25,000 roof and your comparables all have newer roofs: you should document that in your appeal. Most review boards accept repair estimates from licensed contractors as condition evidence.

Step 4: Check for Unequal Assessment (Uniformity)

Even if your assessed value seems close to market value, you can win an appeal based on uniformity: proving that your property is assessed at a HIGHER percentage of its value than comparable neighboring properties. Example: Your home: assessed at $400,000; market value ~$420,000 (95.2% ratio). Three comparable neighbors: assessed at 80–85% of their market values. You are carrying an unfair tax burden relative to neighbors. How to check: pull your neighbors’ assessments from the county website (all public information); compare assessment-to-sale ratios for recent sales in your neighborhood; if your ratio is significantly above the local average: this is a viable appeal argument in most states.

Step 5: Know Your Deadline and File On Time

Missing the appeal deadline means waiting an entire year and potentially losing thousands of dollars in overassessment. Deadlines vary significantly by state: Texas: May 15 (or 30 days after notice mailing, whichever is later). California: November 30 for standard assessments (September 15 in some counties). Florida: 25 days after the TRIM notice. Illinois: within 30 days of assessment notice. New York: typically March 1 (varies by municipality). Most states: file within 30–60 days of receiving your assessment notice. File as soon as you receive your assessment. Do not wait until you’ve assembled all evidence; file to protect your rights and continue gathering evidence. How to file: most counties offer online filing; some require in-person or mail; check your county assessor’s website for the specific form and process.

Step 6: The Informal Hearing (Most Appeals Resolve Here)

Most appeals go through an informal hearing first — a meeting (often via phone or online in 2026) with an assessor’s representative. This is where 70–90% of successful appeals settle. The informal hearing is not adversarial. Present your evidence calmly: "Here is my comparable sales analysis showing similar homes sold for $X below my assessed value." "Here is documentation of the deferred maintenance reducing my market value." "Here is the error in my property record card." The assessor’s representative has authority to adjust values without going to a formal board. Many informal settlements happen in under 30 minutes for well-prepared homeowners with strong comparables.

Step 7: The Formal Hearing (If Needed)

If the informal hearing doesn’t produce an acceptable reduction: request a formal hearing before the review board (Appraisal Review Board in Texas, Board of Assessment Review in New York, Value Adjustment Board in Florida, etc.). At the formal hearing: arrive with organized, printed evidence packets. Present your comparable sales analysis in a clean table format. State your argument factually: "Based on three comparable sales within the last 6 months in my neighborhood, the market value of my property is $X — not the assessed value of $Y." Do not argue that taxes are "too high." Boards cannot lower your tax rate. They can only adjust your assessed value. Keep every argument in the language of market value and evidence.

“The property tax conversation I have with every seller before listing: "Before we set a list price, let me show you something. Your current assessed value: $480,000. The three comparable sales I’m using to price your home: $441,000, $453,000, and $460,000. Your home is worth $445,000–$460,000. Your county assessed it at $480,000. You’ve been overpaying property taxes for at least a year based on those comps. Before you sell, you should file an appeal — the same data that tells us your list price is exactly the evidence that wins a tax appeal. You’ll save $600–$900 this year in taxes and potentially get a refund on the overassessment. The appeal takes 30 minutes to file online. That’s $600 an hour. Almost nobody does this. It works almost 60% of the time nationally. File before you list."”

— Ryan Brown, Principal Broker & CEO, Own Luxury Homes®

• Property Tax Appeal Evidence: What Actually Wins
• Are You Overassessed? The Self-Assessment Guide
• The Real Monthly Cost of Homeownership
• Most Overpriced Housing Markets 2026
• Housing Market Predictions 2026
• Complete Home Selling Guide

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