Property Tax Appeals in the Post-COVID Market: Assessment Lag Issues
TL;DR
COVID-era market surges drove assessments to record highs. Now that many markets have cooled, those peak-era assessments may overstate current values. If your assessment reflects 2021-2022 peak prices but your market has since declined, appeal using recent comparable sales showing lower values. The assessment lag that helped homeowners during the run-up now works against them as prices stabilize or fall.
Property Tax Appeals in the Post-COVID Market: Assessment Lag Issues is a topic that deserves a clear look. During 2020-2022, home prices surged 20-40% in many markets.
Keep your tone professional and factual. Review boards respond to evidence, not complaints. If you walk in with 3 strong comparable sales and a calm, organized presentation, you are already ahead of most appellants.
The Post-COVID Assessment Problem
During 2020-2022, home prices surged 20-40% in many markets. Assessors updated values accordingly, sometimes with a one to two year lag. Now several things have changed:
- Mortgage rates more than doubled from pandemic lows
- Buyer demand has cooled significantly
- Prices have flattened or declined in many markets
- Affordability constraints limit what buyers can pay
But assessments in many areas still reflect the peak. If your assessment was set using 2021-2022 sales data and your market has since cooled, you may be paying taxes on inflated values.
Understanding this topic fully means looking at both the big picture and the specific details that apply to your situation. Every property is different, and the strategies that save the most money are the ones tailored to your particular home, location, and circumstances.
Start by gathering the basic facts about your property: its assessed value, the tax rate in your jurisdiction, and any exemptions currently applied. Then compare your situation to what is available. You may find opportunities for savings that you did not know existed.
How to Prove the Market Has Changed
Recent Comparable Sales
Pull sales from the most recent 6 months. Compare them to sales from the period used to set your assessment. If recent sales are 5-15% lower, the market has corrected and your assessment should follow.
Days on Market Trends
Show that homes are taking longer to sell than during the surge. Longer marketing times indicate reduced demand and downward price pressure.
Price Reduction Data
Active listings with price cuts demonstrate that sellers are adjusting expectations downward. This is real-time market evidence.
Mortgage Rate Impact
Higher mortgage rates directly reduce buying power. A buyer who qualified for $400,000 at 3% can only afford roughly $300,000 at 7%. This caps what homes can sell for.
The Assessment Date Matters
Every jurisdiction has an official valuation date for the assessment. Your evidence needs to show market conditions as of that date, not necessarily today. If the valuation date was January 1, 2026, show what comparable homes were selling for around that date.
For general guidance on declining market appeals, see our declining market appeal guide.
Deadlines in property tax are not flexible. Miss the filing window by even one day and you lose your right to appeal for the entire year. That is another 12 months of overpaying with no recourse. As soon as you receive your assessment notice, find the deadline and mark it on your calendar with a reminder set for two weeks before.
If your deadline has already passed, check whether your state has a secondary appeal window. Some states allow filing with a higher court or board after the initial deadline. If no secondary option exists, start preparing now for next year's appeal so you are ready the moment your next notice arrives.
Your Next Steps
Do not let this information sit. Take action this week:
- Review your most recent assessment notice. Pull it out and check every line. Look for errors in square footage, lot size, bedroom count, and property features. Mistakes here are more common than most homeowners realize.
- Pull comparable sales data. Find 3 to 5 similar properties near you that sold recently. If they sold for less than your assessed value, you have the foundation of a strong appeal.
- Check your exemption status. Contact your county assessor's office and confirm which exemptions are currently applied to your property. Many homeowners qualify for exemptions they have never filed for.
- Set a deadline reminder. Find your appeal deadline and put it on your calendar with a 2-week advance warning. Missing the deadline costs you a full year of potential savings.
Why Most Homeowners Overpay
Studies consistently show that a large percentage of residential properties are over-assessed. The Lincoln Institute of Land Policy found that roughly 40% of assessments are off by more than 10%. That is not a rounding error. On a $350,000 home, a 10% overvaluation means you are paying taxes on $35,000 of value that does not exist.
The reason is simple: assessors use mass appraisal models to value thousands of properties at once. They cannot inspect every home individually. The models rely on averages, which means homes that are below average in condition, location, or desirability often get assessed too high. If your home has any characteristics that reduce its value compared to the average home in your area, your assessment may be inflated.
The only way to fix this is to check your assessment yourself. Compare it to actual sales of similar properties. If the numbers do not match, file an appeal. The process exists for exactly this purpose, and homeowners who use it save an average of $1,000 to $3,000 per year.
Appealing does not increase your assessment. In most jurisdictions, the review board can only lower your value or leave it unchanged. There is no downside to filing a well-prepared appeal.
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Frequently Asked Questions
How can I appeal my property tax assessment after COVID-19?
COVID-era market surges drove assessments to record highs. Now that many markets have cooled, those peak-era assessments may overstate current values. If your assessment reflects 2021-2022 peak prices but your market has since declined, appeal using recent sales data to demonstrate your home's lower current value.
Why are property tax assessments lagging in the post-COVID market?
During 2020-2022, home prices surged 20-40% in many markets. Assessors updated values accordingly, sometimes with a one to two year lag. Now several things have changed: mortgage rates more than doubled from pandemic lows, buyer demand has cooled significantly, and home prices have declined in many areas.
How to Prove the Market Has Changed?
Pull sales from the most recent 6 months. Compare them to sales from the period used to set your assessment. If recent sales are 5-15% lower, the market has corrected and your assessment should follow.
When does the assessment date matter for my property tax appeal?
Every jurisdiction has an official valuation date for the assessment. Your evidence needs to show market conditions as of that date, not necessarily today. If the valuation date was January 1, 2026, show what comparable homes were selling for around that time, not current sales.
Get Current Market Evidence
Our $79 Evidence Packet pulls the most recent comparable sales data, reflecting where the market is now, not where it was during the pandemic surge.