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747 Johnson Ave, Ronkonkoma, NY 11779 Property Records

Suffolk County and Islip Town property record for 747 Johnson Ave, Ronkonkoma, NY 11779

Property Summary

Property TypeSingle Family Home
Details1,776 sqft · built 1971
Lot Size0.21 acres (9,148 sqft)
Owner2 Individual Names on Record
Last Sale$480,000 (Dec 2020)
Tax Bill$11,904 (2024)
Deeds & MortgagesDec 2020 Sale
Flood ZoneZone X (minimal risk)
APN472889 62.-1-44

Property Details

APN / Parcel Number

Primary APN472889 62.-1-44
Alternative APNs
  • 0500-062.00-01.00-044.000
  • 288906200000010440000000
  • 472800143230
  • 552610

Interior

Building Area1,776 sqft Living Area
1st Floor Area1,032 sqft

Exterior

Year BuiltBuilt 1971
Effective Year BuiltEffective 1971
Lot Area9,148 sqft (0.21 acres)
Lot Width50 ft Width

Location & Zoning

Account Number552610
Street Address747 JOHNSON AVE
CityRONKONKOMA
StateNY
Zip11779-6138
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeA
Legal DescriptionX2240319Y212898 T014H00000000
Legal Block2000
Legal Lot Number100
JurisdictionSUFFOLK NY
Township / Civil DivisionISLIP
Census Block Group2
Census Block2021
Census Tract145808

Owner

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

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record2 Individual Names on Record
Mailing Address747 JOHNSON AVE, RONKONKOMA, NY 11779-6138
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleDec 22, 2020 · Amount on Record
Deed SaleDec 22, 2020 · Amount on Record
Prior SaleFeb 4, 2004 · Amount on Record
Deed Book / Page13083 / 851
Record UpdatedSep 20, 2026

December 2020: Deed, Transfer

Document TypeDeed
JurisdictionSUFFOLK NY
Recording DateDec 22, 2020
Property Address747 JOHNSON AVE, RONKONKOMA, NY 11779-6138
Document Number0130830851
Book / Page13083 / 851
Instrument DateNov 5, 2020
Transaction TypeTransfer
Record UpdatedAug 20, 2021

Transaction

AmountAmount Recorded
Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipTenants by the Entirety
Address64 ARON DR, BOHEMIA, NY 11716-1329

Tax Assessment & Valuation

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

Property Jurisdictions

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

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$41,200 (-) Land $9,700 Building $31,500$580,282 (-) Land $136,620 Building $443,662
2024$11,904.00$580,282 (+2.54%) Land $136,620 Building $443,662
2023$41,200 Land $9,700 Building $31,500$565,934 Land $133,242 Building $432,692

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.

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
Nearby Flood Policies3 in force
Nearby Flood Claims2 (2011–2014)
Claims Outside the SFHA2 of 2
Most Recent ClaimAug 2014 · rainfall accumulation

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 98% of the US · lower than 97.9% of New York
Wildfire LikelihoodUnder 0.01% annual chance
ExposureNone
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 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 310 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Optimum
Fiber · Cable		8,000 / 8,000
Verizon
Fiber		2,300 / 2,300

Cell Coverage

5G (outdoors only) and 4G LTE

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