Office Hours
Monday, Tuesday Wednesday 8:30am-5 pm - Thursday 8:30am-6pm - Friday 8:30am-12:30pm  

Betsy Quist, Assessor
1 Elizabeth Street - Derby, CT 06418
203-736-1455
bquist@derbyct.gov

Lauren Culmo. Assistant
203-736-1455  
lculmo@derbyct.gov   

Board of Assessment Appeals 2023 form - Must be filed with Assessor's Office by Friday February 17, 2024 - Click for Details

2024-2025 Mill Rate is 43.20 - Click here for Grand List & Budget Historical Data

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Click Here for 2024 Personal Property Declaration Forms 

2024 Personal Property forms are due to be filed in the Assessor's Office on or before November 1, 2024 in order to avoid a 25% Penalty

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The Valley Council Of Governments GIS Map Service allows internet users to obtain property assessment information as well as zoning, environmental, and planimetric data.   

Click here to access the maps, field cards etc.

Click on this link for DMV vehicle on-line services.

Home Owners/Renters and Business Owners Rebate Programs:

Click here link to obtain copies of Military Service Records

Annual Income & Expense Report Package for 2023 - Filing deadline is June 1, 2024. 

ALL VEHICLES OWNED THAT ARE NOT REGISTERED ARE LIABLE FOR TAXES. YOU WILL NEED TO DECLARE YOUR NON REGISTERED VEHICLE AS PERSONAL PROPERTY ANNUALLY IN THE ASSESSORS OFFICE.      

Motor Vehicles Assessments

Motor Vehicles are assessed according to State Statutes at 70% of the clean retail value through the use of the National Automobile Dealers Association (NADA) guides and other resources.   

The uniform Assessment date is October 1^st  in Connecticut. Vehicles registered as of October 1^st  will be part of the October 1^st Grand List. Vehicles registered after October 1^st, but prior to August 1^st, will be on the Supplemental list.         

Disposal of a Vehicle

If you disposed of a vehicle and did not transfer the plates you may be eligible for a tax credit. The City is not informed when plates are canceled, so it is the taxpayer’s responsibility to provide the required documentation within the time limits. In accordance with CT State Statute application for tax credit needs to be made within 27 months of the assessment date.

Click here for documents required to receive a tax credit on your motor vehicle.

Transferred Plates       

If you transferred your plates from one vehicle to another you are not entitled to an adjustment. The bill you receive for the vehicle that was registered as of October 1^st  will be paid in full. You will receive a Supplemental bill for the new vehicle the plates were transferred to with a credit from the previous vehicle that was paid for in full.