Assessor’s Office

The Assessor’s Office is responsible for determining the value of more than 184,000 parcels within the Town for the purpose of taxation. The office continually updates ownership records through deed transfers. Physical data is collected in order to maintain inventory records. This includes new construction, demolition, apportionment and consolidation of real property.

The Assessor’s Office is also responsible for the review and approval of all real property tax Exemptions. All applications and/or renewals for real property tax exemptions must, by law, be filed with the Assessor’s Office no later than March 1st of each year.


We recommend using our reservation portal to schedule an appointment with the Town of Brookhaven Assessor's Office, but walk-ins are welcome as well.


If you wish to drop off any paperwork (view and download our online forms), you may do so at the security desk located at the main entrance of Town Hall.


Due to our reduced staffing, if you have any questions or concerns, please reach out to us by using the Contact the Assessor’s Office Online Form.

Executive Order

As per Executive Order No. 11.1 issued by Governor Hochul and adopted by the Town of Brookhaven Supervisor, Edward P. Romaine, Resolution 2022-0057, the Town of Brookhaven Assessor's Office will grant the following exemptions on the 2022 assessment roll to all recipients of the respective exemptions on the 2021 assessment roll, thereby dispensing the need for renewal applications from such persons.

  • RP-459-c - Persons with Disabilities
  • RP-467 Partial for Seniors on low incomes 

However, the Assessor's Office will require a renewal application to be filed when an owner who qualified for the exemption on the 2021 assessment roll, but has since changed his or her primary residence, added another owner to the deed, transferred the property to a new owner, or who is deceased. If so, please send proof of change with the renewal application by March 1st, 2022 to the Town of Brookhaven Assessor's Office.

Assessment Roll

View our Assessment Roll Reports or view our Interactive Assessment Roll.