819 Main St, Islip, NY 11751 Property Records

Suffolk County and Islip Town property record for 819 Main St, Islip, NY 11751

Property Summary

Property TypeSingle Family Home
Lot Size0.76 acres (33,106 sqft)
OwnerCompany Name on File
Last Sale$275,000 (Oct 2003)
Flood ZoneZone X (minimal risk)
APN472889 88.-3-9.1

Property Details

APN / Parcel Number

Primary APN472889 88.-3-9.1
Alternative APNs
  • 0500-088.00-03.00-009.001
  • 288908800000030090010000
  • 472800192930
  • 089411

Exterior

Lot Area33,106 sqft (0.76 acres)
Lot Width143 ft Width

Location & Zoning

Account Number089411
Street Address819 MAIN ST
CityISLIP
StateNY
Zip11751
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeGSD
Legal DescriptionX2257465Y212141 T031H00000000
Legal SubdivisionSOMERSET ESTATES SECTION 3
Legal Block8000
Legal Lot Number300
JurisdictionSUFFOLK NY
Township / Civil DivisionISLIP
Census Block Group1
Census Block1005
Census Tract146613

Owner

Source: Suffolk County and Islip Town records · APN 472889 88.-3-9.1

Assessment roll updated August 11, 2026 · Last verified August 2026

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

Owner of RecordCompany Name on File
Mailing Address132 RONKONKOMA AVE, RONKONKOMA, NY 11779-3340
Owner TypeCompany
VestingCompany

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesVerified Name on Deed
Last SaleOct 21, 2003 · Amount on Record
Deed SaleOct 21, 2003 · Amount on Record
Prior SaleDec 27, 1994 · Amount on Record
Deed Book / Page12279 / 251
Prior Transfer DateJul 06, 2001
Prior Transfer Doc1212000241
Record UpdatedSep 20, 2026

Tax Assessment & Valuation

Source: Suffolk County and Islip Town records · Assessment roll updated August 11, 2026 · Last verified August 2026

Property Jurisdictions

TypeName
StateNew York
CountySuffolk County
County SubdivisionIslip Town
Unified School DistrictSachem Central School District (PK - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

YearAssessed ValueAssessed Market Value
2025$35,700 (-) Land $17,000 Building $18,700
2024$502,817 (+2.54%) Land $239,437 Building $263,380
2023$35,700 Land $17,000 Building $18,700$490,384 Land $233,516 Building $256,868

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of September 18, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Policies2 in force
Nearby Flood Claims1 (2014)
Claims Outside the SFHA1 of 1
Most Recent ClaimAug 2014 · rainfall accumulation

Wildfire

Wildfire RiskLow
lower than 98% of the US · lower than 97.9% of New York
Wildfire LikelihoodUnder 0.01% annual chance
ExposureNone
beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

ProviderMax Down / Up (Mbps)
Optimum Communications
Fiber · Cable
8,000 / 8,000
Verizon
Fiber
2,300 / 2,300
T-Mobile USA
Fixed Wireless
100 / 20

Based on FCC filings for 264 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water SystemSUFFOLK COUNTY WATER AUTHORITY
serves 1,100,000 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.

Nearby Properties on Main St

Nearby Streets

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