Every few years, many Connecticut municipalities re-assess all real estate — and 2025 marks one of those major revaluation cycles for dozens of towns. If your town just sent you a new valuation, this means your 2026 property taxes could be based on a significantly increased assessment — unless you act quickly.
But there is good news. If you catch it in time, you can challenge that assessment and potentially reduce your 2026 property taxes. Here’s exactly how to do it, and what every homeowner in Connecticut should know before February 1.
🕒 Why Timing Is Critical: The CT Tax Calendar
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Municipal assessments are based on a fixed “grand list,” usually effective October 1 of the revaluation year.
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Once your town finalizes the grand list (often by January 31), assessment notices go out — and that triggers the official appeal season.
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Under state law, you must file a written appeal with your local Board of Assessment Appeals (BAA) by February 20.
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In some years, if the town extends its deadline, the filing window may stretch to early March — but February remains the standard.
Bottom line: If you want to challenge your 2025 revaluation (impacting 2026 taxes), you must begin gathering documentation and submit by Feb 20 (or earlier) — so now is the time to act.
✅ What You Can Do to Lower Your Assessment (and Taxes)
1. Review Your New Assessment Notice Immediately
As soon as you receive your revaluation notice, compare the assessed value to your expectations and to recent market data (comparable sales, local trends). Many towns recently re-assessed after 5 years — with big market shifts.
If the new assessment seems excessive relative to comparable properties, that’s your signal to appeal.
2. Prepare Evidence: Comparable Sales, Appraisal, or Condition Issues
When you file with the BAA, you want facts — not feelings. Useful evidence includes:
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Recent sales data of similar homes nearby (size, age, condition, sale date)
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A professional independent appraisal (especially if you believe the “mass appraisal” missed home-specific defects or depreciation)
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Documentation of issues: structural problems, deferred maintenance, environmental factors, or anything that reduces fair market value
3. File a Written Appeal With Your BAA by the Deadline
Your appeal should: name you as taxpayer, describe the property in question, outline the reasons you believe the assessed value is too high, and provide your own estimated value or range (supported by evidence).
Most towns post the appeal form on their assessor’s website → download it as soon as it’s available (many go live by Feb 1).
4. Attend the Hearing (If Required) or Submit Your Documentation
If the BAA holds a hearing, you’ll get notice by March 1. The hearings typically happen in March (or April if there was a filing extension), and you’ll receive a written decision by the end of the month.
If your appeal is successful, your assessed value (and thus your tax bill) will be adjusted downward — sometimes significantly.
5. If the BAA Denies Your Appeal — You Still Have Recourse
If you disagree with the BAA’s decision, you can appeal further to the local Superior Court. That appeal must be filed within two months of the BAA’s decision notice.
(This is usually more relevant for commercial/large properties or complex valuation arguments.)
📊 Why 2025–2026 Is Especially Important (and Risky) for Taxpayers
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A notable number of towns across CT — including some in Fairfield, New Haven, and other counties — are revaluing this year.
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Market volatility (post-pandemic price swings, interest rate changes, demand shifts) can exaggerate assessed values under mass-appraisal methods — often beyond what the “true market value” will support.
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That means many homeowners may be overpaying — sometimes by thousands of dollars — unless they challenge the assessment promptly.
🧩 Practical Steps for Homeowners — A Pre-February Action Plan
| ✅ Step | 📆 Timing | 🔍 What to Do |
|---|---|---|
| 1. Review revaluation notice / coming mail | As soon as reassessment notices arrive (likely Nov–Dec 2025) | Compare assessed value to market and past bills |
| 2. Research comparable sales & gather preliminary data | Immediately after notice | Use public listings, recent sales records, Zillow/Redfin, etc. |
| 3. (Optional but recommended) Order independent appraisal | Late 2025 → early 2026 | Use licensed appraiser experienced in CT tax appeals |
| 4. Download and fill out BAA appeal form | As soon as form is available (many by Feb 1) | Provide full property details + your valuation argument |
| 5. Submit written appeal to assessor’s office | No later than Feb 20, 2026 (or earlier) | Get proof of delivery or postmark |
| 6. Prepare your case for hearing (if required) | March 2026 | Bring comps, appraisal report, photos, maintenance logs, etc. |
| 7. Consider legal appeal (if needed) | Within two months of BAA decision | Consult attorney if case warrants going to Superior Court |
🧠 Tips That Make a Real Difference
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Don’t rely on neighbor chatter or “everyone got an increase.” Tax assessments must reflect fair market value. What matters is evidence — not what others say.
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Many towns use “mass appraisals” — which can miss unique home issues. A few well-documented problems (foundation, mold, location flaws) often tip the balance in your favor.
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Be proactive. Waiting until right before deadline invites rush, missed paperwork, and weaker cases.
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Consult a professional if needed. For large homes, commercial properties, or complicated situations, talk with a real estate attorney or certified appraiser.
🔎 What to Do Right Now
If you own a home in a municipality undergoing 2025 revaluation — don’t wait. Start reviewing your notice, gather your data, and mark your calendar: February 20, 2026 is the key deadline most towns enforce. Once that passes, your chance to lower your assessment (for this revaluation cycle) could be gone until the next cycle — often five years away.
Lavanya
Real Estate Investor & Agent
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