Connecticut Property Tax Appeal Guide
How to challenge your property tax assessment in Connecticut - deadlines, process, and a savings calculator.
What This Data Tells Us About Appeals in Connecticut
- Administrative filing in Connecticut is listed at $0, so the first barrier is evidence and timing, not a petition fee.
- This ACS extract does not store how often Connecticut assessments are reduced on appeal; comparable sales and property-record errors are the evidence the named board typically asks for.
- The typical window centers on February; confirm the current county notice date before relying on the statewide summary. Deadline shape differs on Maine and Maryland.
Primary signal
The administrative filing is usually free
File with the Board of Assessment Appeals. The reported filing-fee structure is $0; later court or tribunal stages may use a different schedule.
Decision signal 2
The filing window centers on February
Within 90 days of the assessment date (February 20 deadline). Deadlines can vary by county and assessment cycle, so confirm the current date with the local assessor before relying on this guide.
Decision signal 3
Connecticut's process has its own procedural details
Connecticut assesses property at 70% of fair market value. Revaluation cycles vary by municipality (generally every 5 years).
Decision signal 4
This extract does not store an appeal-win rate
The ACS county medians on this site do not include how often Connecticut assessments are reduced on appeal. Recent comparable sales and documented property-record errors are the evidence boards typically ask for.
How to read this guide and disclaimer
Use the ranked signals above as a preparation order, not as a forecast. Start with the filing window and named appeal body because a strong valuation argument cannot cure a missed deadline or a filing sent to the wrong office. Then compare the assessment with recent, genuinely similar properties and document factual errors such as incorrect square footage, condition, or classification.
An estimated success rate is not part of this ACS extract. Keep copies of the assessment notice, evidence, forms, delivery confirmation, and every response from the taxing authority. If a state rule and a county instruction differ, follow the current instruction issued by the office that will hear the appeal.
This guide is for informational purposes only and is not legal or tax advice. Deadlines, filing fees, and procedures vary by county within Connecticut and can change year to year. Always verify the current rules with your local assessor's office, or a licensed attorney or tax professional, before filing. Source: Connecticut Office of Policy and Management.
Appeal calendars beside Connecticut
Other state boards, not geography. Use them to see whether Connecticut's February window is unusual; start with Maine and Maryland.
| Peer state | Typical month | Filing fee |
|---|---|---|
| Maine Also open Maine appeal steps | February | $0 |
| Maryland Also open Maryland appeal steps | February | $0 |
| West Virginia Also open West Virginia appeal steps | February | $0 |
| Massachusetts Also open Massachusetts appeal steps | February | $0 for abatement; $10–$100 for ATB |
| Delaware Also open Delaware appeal steps | March | $0 |
Appeal Deadline
Within 90 days of the assessment date (February 20 deadline)
Appeal Body: Board of Assessment Appeals
Step-by-Step Appeal Process
- 1
Review your assessment notice from the municipal assessor
- 2
File an appeal with the Board of Assessment Appeals by February 20
- 3
Attend a hearing (typically March) and present your evidence
- 4
If unsatisfied, appeal to the Superior Court within 2 months of the Board's decision
Connecticut-Specific Notes
Connecticut assesses property at 70% of fair market value. Revaluation cycles vary by municipality (generally every 5 years).
Source: Connecticut Office of Policy and Management
Estimate appeal savings
After you have Connecticut's deadline (February) and filing route (Board of Assessment Appeals), project annual savings if an assessment cut sticks. The shared estimator lives on one tools URL so each state page keeps its own process facts instead of reprinting the same form.
Open appeal savings estimator →