Suffolk County and Southampton Town property record for 1645 Millstone Rd, Sag Harbor, NY 11963
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 2,389 sqft · built 2014 |
| Lot Size | 8.38 acres (365,033 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $3,000,000 (Jan 2020) |
| Tax Bill | $11,267 (2020) |
| Deeds & Mortgages | Jan 2020 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 0900-013.00-01.00-079.022 |
| Primary APN | 0900-013.00-01.00-079.022 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Stories | 2 Stories |
| Building Area | 2,389 sqft Living Area |
| 1st Floor Area | 2,389 sqft |
| Year Built | Built 2014 |
|---|---|
| Effective Year Built | Effective 2014 |
| Architectural Style | Mobile Home |
| Exterior Material | Wood |
| Lot Area | 365,033 sqft |
| View / Lot | Below Average |
| Porch | Open Porch |
| Porch Area | 440 sqft |
| Patio Area | 440 sqft |
| Heating System | HVAC |
|---|---|
| Sewer | Connected |
| Street Address | 1645 MILLSTONE RD |
|---|---|
| City | SAG HARBOR |
| State | NY |
| Zip | 11963-2212 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R80 |
| Legal Description | 88 LD EQ +400088 BOR LD092 COMBINED LOTS 79.7 &3 |
| Legal Block | 1 |
| Legal Lot Number | 79 |
| Jurisdiction | SUFFOLK NY |
| Township / Civil Division | SOUTHAMPTON |
| Census Block Group | 3 |
| Census Block | 3015 |
| Census Tract | 190711 |
1645 Millstone Rd is owned by two individuals who bought it in January 2020.
Source: Suffolk County and Southampton Town records, as of August 11, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 131 PRINCE ST, 4, NEW YORK, NY 10012-3154 |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 3, 2020 · Amount on File |
| Deed Sale | Jan 3, 2020 · Amount on File |
| Prior Sale | Jul 29, 2011 · Amount on File |
| Deed Book / Page | 13042 / 526 |
| Record Updated | Sep 20, 2026 |
| Document Type | Court-Ordered Deed |
|---|---|
| Jurisdiction | SUFFOLK NY |
| Recording Date | Jan 3, 2020 |
| Property Address | 1645 MILLSTONE RD, SAG HARBOR, NY 11963-2212 |
| Document Number | 0130420526 |
| Book / Page | 013042 / 000526 |
| Instrument Date | Dec 20, 2019 |
| Transaction Type | Transfer |
| Record Updated | Feb 3, 2020 |
| Title Company | NOT AVAILABLE |
| Amount | Amount on Record |
|---|---|
| Tax | $12,000.00 |
| Amount Accuracy | Confirmed |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 131 PRINCE ST #4 NEW YORK NY 100123154, 4, NEW YORK, NY 10012-3154 |
Source: Suffolk County and Southampton Town assessment roll, as of August 11, 2026
| Type | Name |
|---|---|
| State | New York |
| County | Suffolk County |
| County Subdivision | Southampton Town |
| Unified School District | Sag Harbor Union Free School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,773,000 Land $998,600 Building $774,400 | ||
| 2024 | $2,814,285 (+10.88%) Land $1,585,079 Building $1,229,206 | ||
| 2023 | $1,764,000 Land $998,600 Building $765,400 | $2,538,130 Land $1,436,835 Building $1,101,295 | |
| 2020 | $11,267.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 1645 Millstone Rd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2021.
Source: FEMA National Flood Hazard Layer, effective September 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 29 policies |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 29 in force |
| Nearby Flood Claims | 1 (2021) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Sep 2021 · Remnants Of Hurricane Ida |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 1645 Millstone Rd is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · above 54% of New York |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | SUFFOLK COUNTY WATER AUTHORITY serves 1,100,000 people · EPA ID NY5110526 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jan 2024 |
| Lead | 1 ppb (2025–2027) action level 15 ppb |
| Water Quality | Asbestos resolved · Jul 2020 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 99 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Optimum Fiber · Cable | 8,000 / 8,000 |
| Starlink Satellite | 280 / 30 |
5G (outdoors only) and 4G LTE
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