857 Johnson Ave, Ronkonkoma, NY 11779 Property Records

Suffolk County and Islip Town property record for 857 Johnson Ave, Ronkonkoma, NY 11779

Property Summary

Property Type	Single Family Home
Details	1,136 sqft · built 1950
Lot Size	0.48 acres (20,909 sqft)
Owner	2 Individual Names on Record
Last Sale	$115,000 (Dec 2017)
Tax Bill	$10,367 (2024)
Deeds & Mortgages	Apr 2021 Refinance Aug 2018 Sale + 1 more
Flood Zone	Zone X (minimal risk)
APN	`472889 62.-3-4`

Property Details

APN / Parcel Number

Primary APN	`472889 62.-3-4`
Alternative APNs	`0500-062.00-03.00-004.000` `288906200000030040000000` `472800144330` `061845`

Interior

Building Area	1,136 sqft Living Area
1st Floor Area	1,136 sqft

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1950
Lot Area	20,909 sqft (0.48 acres)
Lot Width	100 ft Width
Garage Type	Attached
Garage Area	264 sqft

Location & Zoning

Account Number	061845
Street Address	857 JOHNSON AVE
City	RONKONKOMA
State	NY
Zip	11779-6053
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	AA
Legal Description	X2241897Y213253 T014H00000000
Legal Block	2000
Legal Lot Number	300
Jurisdiction	SUFFOLK NY
Township / Civil Division	ISLIP
Census Block Group	2
Census Block	2011
Census Tract	145808

Owner

Source: Suffolk County and Islip Town records, as of October 19, 2026

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

Owner of Record	2 Individual Names on Record
Mailing Address	857 JOHNSON AVE, RONKONKOMA, NY 11779-6053
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Apr 21, 2021	Deed of Trust, Mortgage · Stand-Alone Refinance NATIONWIDE MORTGAGE BANKERS
Aug 27, 2018	Deed, Transfer
Dec 2, 2017	Grant Deed, Transfer · Construction Mortgage STATION HOMES INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 2, 2017 · Amount on Record
Deed Sale	Dec 2, 2017 · Amount on Record
Prior Sale	Apr 4, 2003 · Amount on Record
Deed Document Number	201717-0214133
Deed Book / Page	12940 / 537
Record Updated	Oct 29, 2026

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SUFFOLK NY
Property Address	857 JOHNSON AVE, RONKONKOMA, NY 11779-6053
Transaction Type	Mortgage
Record Updated	May 25, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0232630251
Date	Apr 21, 2021
Book Page	23263/251
Instrument	DM004599

Lender

Name	NATIONWIDE MORTGAGE BANKERS

Agreement

Type	Stand-Alone Refinance
Amount	Amount Recorded
Term	349 Months
Due	May 1, 2050

August 2018: Deed, Transfer

Document Type	Deed
Jurisdiction	SUFFOLK NY
Recording Date	Aug 27, 2018
Property Address	857 JOHNSON AVE, RONKONKOMA, NY 11779-6053
Document Number	0129750598
Book / Page	12975 / 598
Instrument Date	Jun 26, 2018
Transaction Type	Transfer
Record Updated	Aug 20, 2021

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	126 SYCAMORE AVE, BETHPAGE, NY 11714-2112

December 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SUFFOLK NY
Recording Date	Dec 2, 2017
Property Address	857 JOHNSON AVE, RONKONKOMA, NY 11779-6053
Document Number	0129400537
Book / Page	012940 / 000537
Instrument Date	Oct 23, 2017
Transaction Type	Transfer
Record Updated	Feb 1, 2018
Title Company	EAGLE ABSTRACT CORPORATION

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$460.00
Amount Accuracy	Confirmed
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	186 CLAYTON ST CENTRAL ISLIP NY 117223606, CENTRAL ISLIP, NY 11722-3606

Mortgage

Document Number	228790932
Date	Dec 2, 2017
Book Page	022879/000932

Lender

Name	STATION HOMES INC
Address	10 CHICHESTER RD, HUNTINGTON STATION, NY 11746-8404

Agreement

Type	Construction Mortgage
Amount	Amount Recorded
Term	12 Months
Due	Dec 1, 2018

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	New York
County	Suffolk County
County Subdivision	Islip Town
Unified School District	Connetquot Central School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$35,800 (-) Land $13,900 Building $21,900	$504,226 (-) Land $195,775 Building $308,451
2024	$10,367.00		$504,226 (+2.54%) Land $195,775 Building $308,451
2023		$35,800 Land $13,900 Building $21,900	$491,758 Land $190,934 Building $300,824

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 Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	3 in force
Nearby Flood Claims	2 (2011–2014)
Claims Outside the SFHA	2 of 2
Most Recent Claim	Aug 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 Risk	Low lower than 99.1% of the US · lower than 99.2% of New York
Wildfire Likelihood	Under 0.01% annual chance
Exposure	Direct burnable vegetation

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 314 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Optimum Fiber · Cable	8,000 / 8,000
Verizon Fiber · Fixed Wireless in parts of the area	2,300 / 2,300

May also be available: T-Mobile.

Cell Coverage

5G (outdoors only) and 4G LTE

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