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309 Madison St, Sag Harbor, NY 11963 Property Records

Suffolk County and Southampton Town property record for 309 Madison St, Sag Harbor, NY 11963

Property Summary

Property TypeSingle Family Home
Details3 bd · 2 ba · 1,280 sqft · built 2007
Lot Size0.23 acres (10,019 sqft)
Owner2 Company Names on Record
Last Sale$735,000 (May 2012)
Tax Bill$5,507 (2024)
Deeds & MortgagesMay 2019 Transfer
May 2019 Transfer
+ 2 more
Flood ZoneZone X (minimal risk)
APN0903-007.00-03.00-001.000

Property Details

APN / Parcel Number

Primary APN0903-007.00-03.00-001.000
Alternative APNs
  • 473609 007.000-0003-001.000
  • 360900700000030010000000
  • 473600100870

Interior

Bedrooms3 Beds
Full Baths2 Baths
Stories2 Stories
Building Area1,280 sqft Living Area
1st Floor Area1,280 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 2007
Effective Year BuiltEffective 2007
Architectural StyleMobile Home
Exterior MaterialWood
Lot Area10,019 sqft (0.23 acres)
View / LotBelow Average
Garage TypeDetached
Garage Area180 sqft
PorchPorch
Porch Area180 sqft
Patio Area100 sqft

Utilities, Heating & Cooling

Heating SystemHVAC
Heating FuelOil
SewerConnected
Water SourceCommercial

Location & Zoning

Street Address309 MADISON ST
CitySAG HARBOR
StateNY
Zip11963-3443
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeVILLA
Legal Description1987 EQ +4300
Legal Block3
Legal Lot Number1
JurisdictionSUFFOLK NY
Township / Civil DivisionSOUTHAMPTON
Census Block Group2
Census Block2024
Census Tract190708

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic DistrictWithin the Sag Harbor Village District (Boundary Increase)
listed 1994 · 882 contributing resources · NRIS 94000400

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

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 Record2 Company Names on Record
Mailing Address22 APPLETON PL, DOBBS FERRY, NY 10522-2909
Owner TypeCompany

Deeds, Mortgages & Sale History

DateDocument
May 24, 2019Quit Claim Deed, Transfer
NOT AVAILABLE
May 24, 2019Quit Claim Deed, Transfer
NOT AVAILABLE
Apr 4, 2019Quit Claim Deed, Transfer
NOT AVAILABLE
May 17, 2018Grant Deed, Transfer

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleMay 25, 2012 · Amount on Record
Deed SaleMay 25, 2012 · Amount on Record
Deed Book / Page12694 / 501
Record UpdatedSep 20, 2026

May 2019: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSUFFOLK NY
Recording DateMay 24, 2019
Property Address309 MADISON ST, SAG HARBOR, NY 11963-3443
Document Number0130130337
Book / Page013013 / 000337
Instrument DateApr 23, 2019
Transaction TypeTransfer
Record UpdatedJul 1, 2019
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address22 APPLETON PL DOBBS FERRY NY 105222909, DOBBS FERRY, NY 10522-2909

May 2019: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSUFFOLK NY
Recording DateMay 24, 2019
Property Address309 MADISON ST, SAG HARBOR, NY 11963-3443
Document Number0130130336
Book / Page013013 / 000336
Instrument DateApr 23, 2019
Transaction TypeTransfer
Record UpdatedJul 1, 2019
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address12 APPLETON PL DOBBS FERRY NY 10522, DOBBS FERRY, NY 10522

April 2019: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSUFFOLK NY
Recording DateApr 4, 2019
Property Address309 MADISON ST, SAG HARBOR, NY 11963-3443
Document Number0130070086
Book / Page013007 / 000086
Instrument DateMar 14, 2019
Transaction TypeTransfer
Record UpdatedMay 6, 2019
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address22 APPLETON PL DOBBS FERRY NY 105222909, DOBBS FERRY, NY 10522-2909

May 2018: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionSUFFOLK NY
Recording DateMay 17, 2018
Property Address309 MADISON ST, SAG HARBOR, NY 11963-3443
Document Number0129620088
Book / Page012962 / 000088
Instrument DateApr 20, 2018
Transaction TypeTransfer
Record UpdatedJul 2, 2018

Transaction

AmountAmount Recorded
Tax$7,400.00
Amount AccuracyConfirmed
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipHusband and Wife
Address22 APPLETON PL DOBBS FERRY NY 105222909, DOBBS FERRY, NY 10522-2909

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateNew York
CountySuffolk County
County SubdivisionSouthampton Town
MunicipalitySag Harbor Village
Unified School DistrictSag Harbor Union Free School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$1,982,700 (-) Land $896,300 Building $1,086,400$3,147,142 (-) Land $1,422,698 Building $1,724,444
2024$5,507.00 (-61.52%)$3,147,142 (+10.32%) Land $1,422,698 Building $1,724,444
2023$1,982,700 Land $896,300 Building $1,086,400$2,852,805 Land $1,289,640 Building $1,563,165
2020$14,312.00

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 ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Flood Insurance CostPremium on Record
median of 37 policies
Community Rating SystemClass 10 (0% premium discount)
Nearby Flood Policies37 in force
Nearby Flood Claims86 (1978–2024)
Claims Outside the SFHA14 of 86
Most Recent ClaimAug 2024 · Severe Storm And Flooding
Claims by Event
  • Hurricane Sandy, Oct 2012 · 25 claims
  • Coastal Storm, High Tides, Heavy Rain, & Flooding, Dec 1992 · 12 claims
  • Coastal Storms & Flooding, Mar 1984 · 5 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 RiskLow
lower than 80% of the US · above 54% of New York
Wildfire Likelihood0.01% annual chance
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

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 SystemSUFFOLK COUNTY WATER AUTHORITY
serves 1,100,000 people · EPA ID NY5110526
Water SourceGroundwater
Last State InspectionJan 2024
Lead1 ppb (2025–2027)
action level 15 ppb

Violations Reported to EPA

Water QualityAsbestos
resolved · Jul 2020
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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 305 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Optimum
Fiber · Cable		8,000 / 8,000
Verizon
Fixed Wireless		300 / 20
Starlink
Satellite		280 / 30
T-Mobile
Fixed Wireless		100 / 20

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