New Haven County Assessor

Find New Haven County Connecticut assessor, assessment, auditor's, and appraiser's office, revenue commissions, GIS, and tax equalization departments. Assessors provide information on property and land tax assessment, property listings, values, valuations, property search, and records.


Branford Assessor 1019 Main Street Branford CT 06405 203-488-2039


Derby Assessor 1 Elizabeth Street Derby CT 06418 203-736-1455

East Haven Assessor 250 Main Street East Haven CT 06512 203-468-3233

Hamden Town Assessor 2750 Dixwell Avenue Hamden CT 06518 203-287-7128

Meriden Assessor 142 East Main Street Meriden CT 06450 203-630-4065

Middlebury Assessor 1212 Whittemore Road Middlebury CT 06762 203-758-1447

Milford Assessor 70 West River Street Milford CT 06460 203-783-3215

Naugatuck Assessor 229 Church Street Naugatuck CT 06770 203-720-7016

New Haven Assessor 165 Church Street New Haven CT 06510 203-946-6047

New Haven County Assessor's Office 165 Church Street New Haven CT 06510 203-946-4800

Seymour Assessor 1 1st Street Seymour CT 06483 203-881-5013

Southbury Assessor 501 Main Street South Southbury CT 06488 203-262-0674

Wallingford Assessor 45 South Main Street Wallingford CT 06492 203-294-2001

Waterbury Assessor 81 West Main Street Waterbury CT 06702 203-574-6821

West Haven Assessor 355 Main Street West Haven CT 06516 203-937-3515

What if I disagree with an assessment?

Most jurisdictions have an appeal process for contesting an assessment. While the specific rules vary from one locality to the next, the process typically involves a hearing before an assessment appeal board. Taxpayers who have concerns about their assessment should visit their local Assessor's Office or its website to learn about the appeal process and what information is required in order to appeal a property tax assessment.

How does my assessment affect the taxes I owe?

The formula used to calculate property taxes varies by location. Your assessment is one part of your property tax calculation. Your property tax payment is calculated by multiplying your property's assessed value, or in some cases half of the assessed value, by the tax rate for your location.

What is the difference between assessed value and market value?

Market value is the likely selling price of a property based on current market conditions. In some jurisdictions, the Assessor calculates an assessed value by applying a factor, for example 70%, to the market value. The assessed value is then used to calculate the taxes for that property.