Assessor's Office


The Assessor's Office is responsible for producing a fair and accurate assessment roll of property values within the Town.

In the Town of Southampton, this includes:

  • 13 school districts
  • 21 fire districts
  • Nine lighting districts
  • Nine ambulance districts
  • Two water districts (Hampton Bays and Riverside)

Taken together, these areas encompass over 51,000 parcels, including seven incorporated villages. Southampton also has an inter-municipal agreement with the Village of Sag Harbor to assess the area that extends into the Town of East Hampton.

As a result of this process, the Assessor’s Office maintains records which relate to items that can affect a property’s value, including the filing of tax exemptions. Research into inquires regarding ownership, overlay problems, rights of way, riparian rights, and others that occur on a routine basis. The office is also tasked with maintaining a current street address database in order to comply with the E-911 emergency dispatch system.

Town Property Owners - Key Assessment Dates


Key Assessment Information

July 1

Valuation Date

March 1

Taxable Status Date

Senior citizen enhanced and disability exemption renewals (Applies only in renewal years)

New exemption applications due

May 1

Tentative Assessment Roll available for public viewing

Third Tuesday In May

Grievance Day