Connecticut Property Tax Appeal & Protest Guide (2026)
Calculate your assessment reduction, check the February 20 (or March 20 if town assessor granted extension) statutory deadline, and access county appraisal district e-File portals under Conn. Gen. Stat. § 12-111
Connecticut Assessment Appeal Standard: Under Conn. Gen. Stat. § 12-111, homeowners in Connecticut can appeal county real property assessments through the Board of Assessment Appeals (BAA) written application (by Feb 20) or Mandatory hearing in March/April. The statutory appeal deadline is February 20 (or March 20 if town assessor granted extension) using form Application for Appeal to Board of Assessment Appeals. Protests are evaluated on Assessment exceeds 70% of fair market value and Inequity relative to municipal grand list supported by Certified real estate appraisal dated as of last town-wide revaluation date and Field card errors documented with architectural drawings.
Connecticut Property Tax Appeal & Protest Calculator
Governing Law: Conn. Gen. Stat. § 12-111 · Annual Deadline: February 20 (or March 20 if town assessor granted extension)
1. Property Assessment & Target Valuation
Enter the preliminary appraised value from your county assessment notice and the realistic fair market value supported by comparable sales.
2. Local Tax Rate & Jurisdiction
Property tax rates are set by combined county, city, ISD, and special hospital/MUD districts.
Reducing your assessed valuation by $55,000 lowers your annual tax liability across all local taxing entities (school district, county, city, hospital).
⚖️ Statutory Protest Stages in Connecticut:
- Board of Assessment Appeals (BAA) written application (by Feb 20)
- Mandatory hearing in March/April
- Superior Court appeal (§ 12-117a within 2 months)
COUNTY PROPERTY TAX APPEAL EVIDENCE DOSSIER & HEARING PACKET
JURISDICTION: STATE OF CONNECTICUT · STATUTE: CONN. GEN. STAT. § 12-111
Target Tax Year: 2026 · Official Protest Instrument: Application for Appeal to Board of Assessment Appeals
Filing Deadline: February 20 (or March 20 if town assessor granted extension)
Prepared: 10/23/2026
| County Preliminary Appraised Value: | $420,000 |
| Claimant Target Market Value (Supported by Comps): | $365,000 |
| Combined Effective Local Tax Rate: | 1.65% |
| Estimated Annual Tax Overcharge Savings: | $908 / Year |
1. Comparable Market Sales (Comps) Grid — Valuation Equity Evidence
| Subject Property / Comps | Living Area (Sq Ft) | Sale Date | Sale / Assessed Price | Adjusted Price / Sq Ft |
|---|---|---|---|---|
| Subject Property (County Valuation) | — | Lien Date: Jan 1 | $420,000 | — |
| Comp 1: Same Subdivision / Block | Similar GLA | Past 12 Months | — | — |
| Comp 2: Similar Model / Age | Similar GLA | Past 12 Months | — | — |
| Comp 3: Similar Bed/Bath Count | Similar GLA | Past 12 Months | — | — |
*Attach county deed records, MLS closing settlement statements, or appraisal district property cards for each comparable sale.
2. Itemized Deferred Maintenance & Physical Condition Deductions
| Defect / Condition Issue | Evidence Attached | Estimated Repair Cost |
|---|---|---|
| Roof / Plumbing / Foundation | Contractor written repair estimate + photos | $_______________ |
| HVAC Mechanical End-of-Life | HVAC diagnostic inspection report | $_______________ |
| Negative Externalities (Traffic / Drainage) | Site photos, aerial GIS map, flood zone record | $_______________ |
3. Appraisal Review Board (ARB) 5-Step Hearing Strategy:
- Collate 4 Copies: Hand 1 copy to each of the 3 panel members and 1 copy to the county appraiser.
- Focus on Facts, Not Taxes: State tax boards have zero control over tax rates; frame arguments strictly on Fair Market Value and Uniform Assessment Equity.
- Stick to the Lien Date: Only cite market transactions and physical condition occurring on or before the statutory valuation date.
- Present Contractor Estimates: Unrepaired physical defects must be supported by third-party licensed bids.
- Politely Rebut County Comps: Point out superior upgrades, square footage variances, or busy road differences in county comps.
Property Owner / Appellant Signature:
Printed Name / Executed Under Penalty of False Swearing / Date
County Property Identification / Account #:
Geographic ID / Parcel Number / Subdivision Lot & Block
Connecticut Property Tax Protest Legal Framework
Statutory Authority & Deadlines
Statutory Appeal Stages
- Board of Assessment Appeals (BAA) written application (by Feb 20)
- Mandatory hearing in March/April
- Superior Court appeal (§ 12-117a within 2 months)
Mandatory Evidence Checklist
- Certified real estate appraisal dated as of last town-wide revaluation date
- Field card errors documented with architectural drawings
- Comparable neighborhood property cards
Protest Benchmarks
Frequently Asked Questions
What is the property tax appeal deadline in Connecticut for 2026?
What are the legal grounds for protest in Connecticut?
Who carries the burden of proof in a Connecticut property tax hearing?
What form must I file to initiate an appeal in Connecticut?
What is the historical success rate for residential property protests in Connecticut?
Official Standards & Authoritative Sources
Connecticut Office of Policy and Management (OPM)
Connecticut Official Property Tax Rules & Oversight
official-state-agencyReviewed & verified by the RateFig Property Tax & Assessment Editorial Team. Data retrieved October 19, 2026. Estimates are planning aids, not financial advice — see our editorial standards.
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