Long Island Property Tax Reduction
The counties of Long Island, New York, see some of the highest property taxes and values in the nation and even the world. Nassau, Suffolk, Queens, and Kings counties make up Long Island, and each has its own charms, challenges, and property situations. Whether they are part of New York City or a suburb, each is facing major increases to start 2026, with even more set for the future. Thankfully, there are options to reduce property taxes across Long Island, with techniques for commercial and residential properties that can be used to dampen the effects of rising costs. While businesses and homes require different approaches, both can see substantial cuts in taxable value.
Nassau County Property Tax Grievances
Commercial Property Tax Reduction
While businesses cannot lower their taxes significantly with exemptions like homes can, property tax appeals can land businesses large cuts. We at O’Connor support commercial appeals across all of Long Island, which encompasses Queens, Kings, Nassau, and Suffolk counties. This is primarily achieved through the use of appeals, which reduce the taxable value of businesses by challenging the original assessments by the county. By finding the true value of your business property, we are able to cut your assessed value as well, which lowers your tax burden. We can also deploy cost segregation, which uses advanced depreciation to lower federal income taxes. While it does not lower property taxes, it does free up a lot of cashflow, especially with recent legislation changes.
Why are Taxes and Commercial Real Estate Prices so High on Long Island?
The two biggest factors are limited room and location. NYC is one of the wealthiest cities in the world and has the most valuable land on Earth. This means that there is strong competition for tiny plots of land. Queens and Kings counties are also part of New York itself, which means they must deal with all of the associated costs and taxes. While outside of NYC’s borders, Suffolk and Nassau counties are closely linked to the metropolis, and are under the same land squeeze as the city itself. Because businesses demand large acreage, the competition for space is even higher.
Key Steps in Appealing Commercial Property Taxes
- Verify assessment details: Ensure that your property is classified correctly and that you are not being charged for improvements, acreage, or other factors that raise your value that do not exist.
- Remove intangible assets: You can only be taxed on real assets, like inventory, real estate, and machinery. Items like software and intellectual property do not count toward your taxable value.
- Provide evidence and financials: The income approach to appeals works best for businesses, so showing your financial data, such as cost vs. revenue, can prove the true value of your commercial property, while physical evidence like photographs are crucial to getting the best deal possible.
- Cost segregation: Accelerated depreciation of real property can be used to shield your business from some or all of your federal income taxes. After years of sunsetting, bonus depreciation is back at 100%, representing the largest tax savings a business can achieve.
- O’Connor handles assessment analysis, business personal property, evidence gathering, comparisons to neighboring properties, and studies into recent business real estate sales. We will also represent you in hearings and even coordinate lawsuits if needed.
Commercial Appeal Deadlines for Long Island
- Queens and Kings counties: March 1, 2026
- Nassau County: March 1, 2026
- Suffolk County: May 19, 2026
Residential Property Tax Reduction in Long Island
Being outside the urban sprawl also makes Suffolk, Nassau, and other parts of Long Island highly desirable. Many families in the area have lived there for generations, and this demand makes keeping a home in family hands quite difficult, which is why tax reduction is vital if you own land on Long Island. New York has a myriad of taxes and fees, but there are also a host of tax reduction techniques that can be used to lower your residential burden significantly, even by thousands of dollars a year. Currently, when it comes to Long Island, O’Connor only supports residential reduction services in Nassau and Suffolk counties.
Long Island Residential Tax Reduction Options
- Exemptions: The standard homestead, over-65, disabled persons, and other exemptions all help protect homeowners. Many of these exemptions work in tandem with each other, as well as other reduction techniques.
- School Tax Reduction Program: The STAR program counters school taxes, the highest of all property levies, by giving New York homeowners rebate payments. STAR can act as an exemption as well, but this has been discontinued for new homeowners. Enhanced STAR offers even greater credit payments or exemptions to seniors.
- Property tax grievances: Also known as appeals, grievances allow you to challenge your land’s assessed value, which can lower your tax threshold. This is the only way to directly lower your taxable value, which can then empower exemptions further.
Tax Grievances Ensure Fairness and Protect Property
Most homeowners use exemptions and the STAR program to combat high taxes, but grievances are growing in popularity. These appeals against the assessor’s values are designed to correct errors and find the true value of a home. Since the assessed value is the basis for all property taxes, getting this lowered could also lower your tax burden as well. Even better, exemptions can then build upon this cut base value, which means greater savings. Grievances also accomplish other important matters that no other tax reduction technique can:
- Correct appraisal value errors: By comparing home sales to the value of a property, grievances can show that the protested property is being assessed over its true value.
- Ensure equal taxation: By comparing similar properties in the same neighborhood, grievances can reveal hidden issues with unfair or unequal appraisal within neighborhoods or communities.
- Fixing basic errors: Having your property classified wrong, recorded with inaccurate improvements or characteristics, or other simple errors can cost you big. Grievance is the tool for getting them solved.
Long Island Residential Grievance Deadlines
- Nassau County: March 1, 2026.
- Suffolk County: May 19, 2026
How O’Connor can Help
Grieving and appealing your property taxes in New York is complicated and difficult, especially on Long Island. You must gather reams of evidence to prove unequal appraisal or demonstrate errors with property sales records. While basic issues on your assessment can be handled yourself, going beyond that often requires professional expertise. That is where we at O’Connor come in. For over 50 years, we have been helping clients across the nation lower their property taxes. Thanks to its high taxes and unfair valuations, New York has become a particular focus for us. In fact, we have focused on this so much that we have opened a branch office in the area specifically to deal with these issues.
Frequently Asked Questions for Long Island Tax Reductions
Copyright © 2026. O'Connor Tax Reduction Experts. All Rights Reserved.
