Connecticut Property Tax Appeal — 2026 Guide

How to Appeal Your Property Tax Assessment in Connecticut

The general appeal process in Connecticut:

1. Meet the deadline: File a written appeal application with the town's Board of Assessment Appeals (BAA) on or before February 20 of the year following the October 1 assessment date. If the assessor or board of assessors was granted an extension under C.G.S. §12-117 to complete the grand list, the appeal deadline is extended to March 20 and the BAA conducts its hearings in April instead of March. Connecticut has no county government — assessment and appeals are administered at the town/municipal level, so each of the 169 towns runs its own BAA and the application is filed with that town.
2. File a appeal: Contact your county's BAA or file online through your county's online portal.
3. Gather evidence: Market analysis, recent comparable sales, and documentation of property defects or errors.
4. Attend your hearing: Present your evidence to the Board of Assessment Appeals.
5. Escalate if needed: After the initial hearing, consider Board of Assessment Appeals (BAA) — the town's Board of Assessment Appeals; written appeal filed on or before February 20 (or March 20 with a §12-117 extension); the board may increase, decrease, or leave the assessment unchanged (Conn. Gen. Stat. §12-111).