Nassau County, NY tax sales
Tax Sale Atlas maps the Nassau County, NY tax sale, one of 3,105 counties in 49 states. New York sells the deed itself, so no statutory investor interest rate applies. Sale office, calendar and list locations read from the county’s own official pages on Sep 28, 2026.
How tax deed sales work in Nassau County, seat of Mineola: sale calendar, auction platform, over-the-counter lists, and the offices that run each sale.
New to tax sales? Read how New York tax sales work or look terms up in the glossary.
- Next sale
- No scheduled deed auction.
- Format
- RealAuction
- Registration
- There is no separate deed-sale registration.
- County office
- 516-571-2090
On this page
How Nassau County sells delinquent taxes
Tax certificate sale (lien)
- Run by
- Nassau County Treasurer
- Frequency
- annual
- Typical timing
- Held every February as an online auction of the prior year's unpaid taxes.
When it runs
Registration and deposit
Register on the county's RealTaxLien auction site, pay the $175 registration fee, post the $5,000 minimum deposit and submit a budget by the registration deadline. Bidders compete on the interest rate. The buyer pays 10% of the purchase price immediately after the sale and the remaining 90% by the balance date (March 18, 2027 at 3:00pm for the 2027 sale), or forfeits the deposit. Tie bids are broken by random number generator.
Sale format and venue
Tax deed sale
- Run by
- Nassau County Treasurer (tax deed issued to the lien holder; no county deed auction)
- Frequency
- annual
- Typical timing
- No scheduled deed auction.
- Registration
- There is no separate deed-sale registration.
When it runs
Registration and deposit
Sale format and venue
Nassau County tax sale list and auction calendar
For Nassau County tax sale 2026 searches, use the county-run sources below rather than a copied parcel list, and confirm the parcel, registration cutoff, deposit, and payment deadline against the county before you bid. If the parcels on this list are vacant land rather than houses, what buying land at a tax sale hands you is the place to start.
Get the advertised list
Use Unpaid tax listings (weekly Treasurer reports); the advertising list of liens to be sold posts in early January for the current advertised parcels, then recheck it before the auction.Register to bid
Sale day
No scheduled deed auction. Bidding runs on RealAuction; check posted sale dates, registration status, and bidding windows there.Confirm with the office
If the list, platform, and notice disagree, use Nassau County Treasurer (tax deed issued to the lien holder; no county deed auction) as the source to confirm which parcels are actually offered.
Before you bid in Nassau County
4 checks
Start with the live sale list
Pull the current advertised parcels from Unpaid tax listings (weekly Treasurer reports); the advertising list of liens to be sold posts in early January. Lists can change before the sale, so recheck the county source before you price a parcel.Check the state rules that change the bid
Read the New York due-diligence checklist before bidding. Redemption, liens that survive a tax deed, title cleanup, and payment deadlines can change what a parcel is worth. Which liens survive is state law, so read what survives a tax deed in New York before you price the title work.Set a walk-away number
Work out what the parcel is actually worth with the rural land value estimator, then turn it into a ceiling with the tax deed max-bid calculator.
Over-the-counter (leftover) purchases
unsold liens and deeds
New York counties keep no statewide over-the-counter list. A county may sell a parcel left unsold at auction by negotiated or sealed-bid sale, but any sale other than a public auction to the highest bidder needs approval by the county's governing body. Whether this county holds any such inventory must be confirmed with the county treasurer.
New to this path? Read how over-the-counter certificates work. Every state has its own name for what goes unsold, so check what New York calls its leftover tax-sale inventory.
Use the arrow keys to switch between these sections.
County offices
Tax Collector (runs the certificate sale)
County notes
- Nassau County runs an annual online tax LIEN sale in February, not a foreclosed-property auction. Bidders compete on the interest rate, with a cap of 10% of the purchase price per six-month period for the first 24 months.
- The Treasurer's office is open 9:00am to 4:30pm, Monday through Friday. For questions about unpaid taxes on a specific property, call the delinquent tax line at (516) 571-3715.
- The sale is held under the Nassau County Administrative Code rather than the standard RPTL Article 11 county auction process. Read the Treasurer's Terms of Sale and Notice to Tax Lien Purchasers before bidding.
New York rules
- Redemption
- In Article 11 jurisdictions redemption runs before the public ever buys. The owner or anyone with an interest can redeem by paying the enforcing officer the delinquent tax liens plus all charges, until the redemption period expires: two years after the lien date by default, or a later date if the published notice of foreclosure names one. A tax district may by local law extend the period for residential or farm property to three or four years, and for residential property of certain deployed military members to four or five years, or shorten it to one year for residential property found vacant and abandoned and placed on a municipal roll. When one tax district holds several liens on a parcel they are redeemed newest first, and foreclosure continues while the oldest lien is unpaid. Anyone who neither redeems nor answers is barred, and the final judgment extinguishes every equity of redemption, so a buyer at the county's later auction takes property no longer subject to redemption. Suffolk County, which enforces under its own tax act, instead records a tax deed and accepts redemption applications within six months of recording.
- Deed deposit
- No statewide deposit amount. Deposits, bidder registration deadlines, buyer premiums and accepted payment forms are set in each county's terms of sale or the auction contractor's terms; read them before bidding.
- Surplus proceeds
- New York returns surplus to the former owner and lienholders. Under RPTL 1196, added by L.2024, c.55, Part BB after Tyler v. Hennepin County, the enforcing officer must determine within 45 days after the sale whether a surplus exists by subtracting the taxes, interest, penalties and charges (including the foreclosure cost allowance in RPTL 1102) from the price paid at a public sale, or from the property's full value where the sale was not public. Any surplus is paid into court with a report, and the former owner is notified within ten days. Under RPTL 1197 anyone with an interest just before the judgment may claim a share, adjudicated as in a mortgage foreclosure under RPAPL Article 13. At a public auction the price paid is accepted as full value, so no claim can be brought that the price was too low. For residential property with no claim from the former homeowner, the proceeding stays open at least three years. Unclaimed surplus goes to the tax district to reduce its levy. The buyer's price is not reduced by any of this.
A tax deed does not convey marketable title. Most buyers file a quiet title action before they can resell or insure the property. See the due diligence guide.
Frequently asked questions
Does Nassau County, New York sell tax liens or tax deeds?
When is the Nassau County tax certificate sale?
How often does Nassau County hold tax deed sales?
I own a property in this sale. Can I stop it?
Where can I find the Nassau County tax sale list?
Verified Sep 28, 2026 against official county and state sources.
Tax Sale Atlas publishes educational information about public tax sale processes. This is not legal, financial, or investment advice. Rules, dates, and fees change; confirm with the county office before you bid.
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