129 Dune Rd, Water Mill, NY 11976 Property Records

Suffolk County and Southampton Town property record for 129 Dune Rd, Water Mill, NY 11976

Property Summary

Property Type	Single Family Home
Details	6 bd · 1 ba · 5,675 sqft · built 2018
Lot Size	1.01 acres (43,996 sqft)
Owner	Company Name on Record
Last Sale	$8,000,000 (Jun 2014)
Tax Bill	$43,041 (2024)
Deeds & Mortgages	Nov 2017 Sale
Flood Zone	Zone AE (high risk)
APN	`0905-021.00-03.00-005.000`

Property Details

APN / Parcel Number

Primary APN	`0905-021.00-03.00-005.000`
Alternative APNs	`473607 021.000-0003-005.000` `360702100000030050000000` `47360088590`

Interior

Bedrooms	6 Beds
Full Baths	1 Bath
Building Area	5,675 sqft Living Area
1st Floor Area	5,675 sqft
Elevator	Elevator

Exterior

Year Built	Built 2018
Effective Year Built	Effective 2018
Architectural Style	Mobile Home
Lot Area	43,996 sqft
View / Lot	Waterfront
Pool Area	540 sqft
Porch	Open Porch
Porch Area	65 sqft

Utilities, Heating & Cooling

Heating System	HVAC
Sewer	Connected
Water Source	Commercial

Location & Zoning

Street Address	129 DUNE RD
City	WATER MILL
State	NY
Zip	11976
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R3
Legal Description	87 REV CTR LD-3500
Legal Block	3
Legal Lot Number	5
Jurisdiction	SUFFOLK NY
Township / Civil Division	SOUTHAMPTON
Census Block Group	4
Census Block	4006
Census Tract	190502

Owner

Source: Suffolk County and Southampton Town records, as of August 11, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on Record
Mailing Address	15 IVY HILL RD, CHAPPAQUA, NY 10514-1805
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jun 2, 2014 · Amount on Record
Deed Sale	Jun 2, 2014 · Amount on Record
Prior Sale	Oct 12, 2001 · Amount on Record
Deed Book / Page	D00012775 / 987
Prior Transfer Date	Dec 20, 2012
Record Updated	Sep 20, 2026

November 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SUFFOLK NY
Recording Date	Nov 2, 2017
Property Address	129 DUNE RD, WESTHAMPTON BEACH, NY 11978-3004
Document Number	0129360446
Book / Page	012936 / 000446
Instrument Date	Sep 11, 2017
Transaction Type	Transfer
Record Updated	Sep 1, 2020
Title Company	FIDELITY NATIONAL TITLE

Transaction

Amount	Amount Recorded
Tax	$15,600.00
Amount Accuracy	Confirmed
Additional	Arm's Length Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	925 PARK AVE NEW YORK NY 100280210, NEW YORK, NY 10028-0210

Tax Assessment & Valuation

Source: Suffolk County and Southampton Town assessment roll, as of August 11, 2026

Property Jurisdictions

Type	Name
State	New York
County	Suffolk County
County Subdivision	Southampton Town
Municipality	Westhampton Beach Village
Unified School District	Westhampton Beach Union Free School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$7,244,300 (-) Land $4,582,300 Building $2,662,000	$11,498,889 (-) Land $7,273,492 Building $4,225,397
2024	$43,041.00 (-3.05%)		$11,498,889 (+10.32%) Land $7,273,492 Building $4,225,397
2023		$7,244,300 Land $4,582,300 Building $2,662,000	$10,423,453 Land $6,593,237 Building $3,830,216
2020	$44,396.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective September 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone AE high risk
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	8.0 ft
Flood Insurance Requirement	Required federally backed loans
Flood Insurance Cost	Premium on Record median of 242 individual policies
Community Rating System	Class 10 (0% premium discount)
Nearby Flood Policies	439 units insured incl. 197 condo units
Nearby Flood Claims	32 (1991–2024)
Most Recent Claim	Jan 2024 · rainfall accumulation
Claims by Event	Hurricane Sandy, Nov 2012 · 18 claims

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

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 99.8% of the US · lower than 99.9% of New York
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

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

Violations Reported to EPA

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.

Internet Providers

Source: FCC Broadband Data Collection, based on 43 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Fiber · Cable	8,000 / 8,000