What is my assessment based on?

New York State Real Property Tax Law specifies that property values for the annual Assessment Roll be based on real estate market conditions as of July 1 of the prior year.

Among the potential reasons for a change is assessed values are:

  • Physical property change due to new construction or demolition
  • Correction of factual property features such as missing data
  • Adjustment due to a change in market conditions (up or down)
  • Expiration court decisions (grievance, small claims or certiorari)
  • Refinements to assessments to maintain equity for all property owners

To make these decisions, the Assessor’s Office will make on-site field visits, view building and site plans, analyze recent sales data, and use Graphical Information System (GIS) tools such as aerial photography.

Assessor’s Office 116 Hampton Road Southampton, NY 11968 Phone: 631-283-6020 Fax: 631-287-4509

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1. Why did my assessment change?
2. What exemptions am I eligible for?
3. If I file a grievance, when will I know whether it has been successful in lowering my assessment?
4. My property is overvalued and my taxes are too high. How do I grieve my assessment / lower my taxes?
5. Do I have to stand in that long line on Grievance Day? Can I submit my grievance by mail or online?
6. What tax exemptions am I eligible for? (Veterans, Seniors, Volunteer First Responders, etc.)
7. What information should I include with my grievance application?
8. How can I find information about a property (owners, taxes, zoning, etc.)?
9. What will be the assessed value of my home for the tax bill coming in December?
10. What is my assessment based on?
11. What are some of the most common assessment changes in Southampton Town?
12. What can I do if I want more information about the assessment process in Southampton and in New York State?