Nassau property tax, explained.
The Home Improvement Exemption: an eight-year break on your renovation
Nassau's Home Improvement Exemption phases in the added value of a permitted renovation over eight years. Who qualifies, what counts, the $80,000 cap, and the January 4, 2027 deadline.
Why your tax bill jumped after a renovation
Nassau caps assessment increases at 6% a year, but not for additions, dormers, finished basements or pools. How the county finds out, when the bill arrives, and which projects count.
Beyond STAR: four more Nassau tax breaks you may be missing
Nassau offers separate exemptions for seniors with limited income, people with disabilities, veterans, and volunteer firefighters. Who qualifies, how much they cut, and the January 4 deadline.
What happens to your STAR when life changes
Selling, a spouse's death, divorce, a trust, adding a child to the deed, a nursing home, renting the house out, spending winters away. What each one does to your STAR, and what to tell the state.
Why your Enhanced STAR disappeared this year, and when it comes back
The state reads your income from two years back. One high year, like a stock sale or a Roth conversion, can drop you to Basic STAR for a year. Here is how it works and what to do.
When your STAR check comes in Nassau, and what to do if it doesn't
The state pays STAR before school taxes are due. Here is the Nassau timeline, how to track your payment, how to switch to direct deposit, and three things to check if nothing arrives.
Missed a year of STAR? How to claim up to three past years
New York lets you register for a past year's STAR credit up to three years after that year's tax deadline. Here are the dates, the rules, and the catch for homes with the old exemption.
Do you qualify for STAR? Basic vs Enhanced in plain English
Who gets Basic STAR, who gets Enhanced, the 2026 and 2027 income limits, which tax return the state reads, and what changed in 2026 for people turning 65.
Why this year's STAR check is smaller than last year's
The first 2026 STAR checks are 13% to 26% below last year's. Here is why, and what each of Nassau's school districts gets this year.
How to sign up for the STAR credit, step by step
STAR is New York's school tax break for owners who live in their home. Here are the four steps to register for free, and what to do if you just bought or still have the old exemption.
How much your Nassau STAR check will be, and when it comes
Last year's STAR credit for all 55 Nassau school districts, the most it can rise this year, and when to look for the check.
How we pick the three sales on our comps page, and how to use them to file yourself
Our free comps page shows three recent sales near any Nassau house. Here are the exact rules that choose them and how to use them on your own grievance.
Can filing a Nassau County grievance raise your assessment?
No. ARC, the county board that hears appeals, can lower the number you appeal or leave it alone. A higher number next January is a new year's case.
Filing is a no-brainer. The whole county, town by town.
We checked every Nassau home that challenged its assessment in the last two cycles against the county's own settled roll. 94% ended up lower in 2025/26, and 85% in the tougher 2026/27. Of homes that never filed, 4 in 100 did.
Nobody inspects your house when you file a grievance
Homeowners skip filing because they picture a county assessor on the front steps. The whole case runs on a form you send in, and the county's own FAQ says you never have to show up.
The Nassau grievance calendar, in plain dates
Nassau does not use New York's statewide Grievance Day. Here is the county's own schedule, and the one date that ends your year if you miss it.