253 Main Street

Ansonia, CT 06401


Mon., Tues., & Wed. 8:30 a.m. – 4:30 p.m.

Thurs. 8:30 a.m. – 5:00 p.m.

Fri. 8:30 a.m. – 1:00 p.m.

Additional Links:

Contact Information

Phone: (203) 736-5950

Fax: (203) 736-5959


Marsha L. Benno, AAT, CCMA II

Assessor’s Assistant

Dayna Casubolo

The primary function of the Assessor’s office to compile a grand list annually valuing real estate, personal property and motor vehicles in a fair and equitable manner, while adhering to the requirements set forth in the Connecticut General Statutes.

The duty of the Assessor is to discover, list, and value all property subject to taxation.

Real Estate is reviewed annually for any changes that occur between grand list years and what exists on October 1st.  Revaluation is completed every five (5) years and recalculates value based on current fair market transfers.

Business Personal Property is valued annually based on the filing of the declaration by persons or entities conducting business in the City of Ansonia.

Motor Vehicles are valued annually based on the year, make, and model of the vehicle using the NADA pricing guide.  Connecticut State Statute 12-71c(b) states application for an adjustment must be made no later than the December 31st, which falls 27 months after the assessment year.

The Assessor’s office administers state and local programs of tax relief, apply exemption as permitted by state law, and assist the public with a variety of inquiries.


Business Personal Property

Motor Vehicles


The personal property Declaration is due annually, no later than November 1st.


A personal property declaration is required to be completed and submitted by anyone conducting business in the City of Ansonia. It shall list all tangible personal property used to conduct or in the normal course of business. This includes leasehold improvements, expensed supplies, and motor vehicles that are not registered with the Connecticut Department of Motor Vehicles.


There is a 25% penalty for those declarations not filed in accordance with Connecticut General Statue 12-43.



Valuation of motor vehicles is done annually based on the National Automotive Dealer Association Guides, as required.

If a vehicle has been disposed, please see MV Forms of Proof

If you feel the value is incorrect, you may appeal the value to the Ansonia Board of Assessment Appeals. The Board meets in September annually to hear motor vehicle appeals.

Real Estate

 Real Estate is land, buildings, and outbuildings. Periodically real estate will be reviewed to verify the accuracy of the Assessor’s database to ensure all taxable property is recorded and taxed appropriately and accordingly to State Statute.

2018 Income Expense Report

M-3 Tax Exempt Organization

If you feel your property record is incorrect, please contact the Assessor to set up an appointment for inspection.



MV Forms of Proof

CT DMV Site 

BAA Form



The City of Ansonia offers various types of exemption programs.