Town of Islip Property Tax Grievance

Town of Islip

Long Island, New York


The Town of Islip stretches across a wide part of Suffolk’s South Shore, and assessments can vary significantly depending on neighborhood, school district, and proximity to the water. When the Town Assessor places a value on your home or commercial property that’s higher than what the market supports, your property tax bill ends up higher than it should be.


We help Islip homeowners, landlords, and commercial property owners challenge inaccurate assessments through the Suffolk County tax grievance process, and as always, we do not earn a fee unless we lower your taxes and/or secure a tax refund.


If you think your assessment may be inflated, a quick review can give you clarity and possibly lead to meaningful savings.


We routinely handle grievances for properties located everywhere in the Town of Islip, including but not limited to:

  • Bay Shore
  • Bayport
  • Bohemia
  • Brentwood
  • Central Islip
  • East Islip
  • Great River
  • Hauppauge (Islip portion)
  • Holbrook (Islip portion)
  • Islandia
  • Islip
  • Islip Terrace
  • Ronkonkoma (Islip portion)
  • Sayville
  • West Bay Shore
  • West Islip


From waterfront homes along the Great South Bay to residential neighborhoods near the LIRR, over-assessment is more common than most people realize.


Town of Islip Grievance Deadline:


All Town of Islip properties follow the Suffolk County filing deadline, which is the third Tuesday in May, each year. If your property is also located in an assessing and incorporated village, a separate grievance may be necessary, and since the deadlines for villages vary considerably, it is important to contact us today to ensure filing filings. Missing the deadline means waiting an entire year. We handle all timing and paperwork so you never risk losing out on potential savings and/or refunds.


How Do You Know If You're Over-Assessed?


You may be paying too much in property taxes if comparable homes in your area are selling for less than your assessment, your home needs repairs or updates the assessor hasn’t accounted for, your assessment jumped significantly without clear reason, you haven’t challenged your assessment recently—or ever, or your taxes keep going up while your property value hasn’t.


It costs nothing to find out. We’ll review the numbers and give you an honest opinion.


Why Work With Us?


Reducing your taxes isn’t just about filling out a form. It requires understanding local data, how assessors value property, and what evidence supports a reduction.


We provide:

  • Attorney-backed representation;
  • Valuation analysis based on real local sales;
  • Full handling of the grievance and subsequent court proceeding;
  • Support for both residential and commercial properties; and,
  • You pay no legal fees unless we lower your taxes.


We deal with Islip’s assessors and hearing officers so you don’t have to.


Get started with a free assessment review:

Fill out the below Contact Us form today for a complementary tax analysis. A quick review today could lead to savings year after year.


Contact Us