139 Chestnut St, Mount Sinai, NY 11766 Property Records

Suffolk County and Brookhaven Town property record for 139 Chestnut St, Mount Sinai, NY 11766

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 2,014 sqft · built 1980
Lot Size	1 acre (43,560 sqft)
Owner	2 Individual Names on File
Last Sale	$600,000 (Jul 2022)
Tax Bill	$12,554 (2024)
Deeds & Mortgages	Jul 2022 Sale & Refinance Dec 2021 Sale
Flood Zone	Zone X (minimal risk)
APN	`0200-209.00-03.00-003.000`

Property Details

APN / Parcel Number

Primary APN	`0200-209.00-03.00-003.000`
Alternative APNs	`472289 209.00-03-003.000` `228920900000030030000000` `00001142800` `0001142800` `1142800`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Total Rooms	10 Rooms
Stories	1 Story
Building Area	2,014 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1980
Effective Year Built	Effective 1980
Architectural Style	Ranch
Exterior Material	Aluminum/Vinyl
Lot Area	43,560 sqft
View / Lot	Waterfront

Utilities, Heating & Cooling

Heating System	Radiant

Location & Zoning

Account Number	1142800
Street Address	139 CHESTNUT ST
City	MOUNT SINAI
State	NY
Zip	11766-2330
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	OL SCHWENKE 398 35 11 S 120FT OF NH
Legal Subdivision	SCHWENCKE O L
Legal Block	9000
Legal Lot Number	300
Jurisdiction	SUFFOLK NY
Township / Civil Division	BROOKHAVEN
Census Block Group	1
Census Block	1006
Census Tract	158306

Owner

139 Chestnut St is owned and occupied by two individuals who bought it in July 2022.

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

Owner of Record	2 Individual Names on File
Mailing Address	139 CHESTNUT ST, MOUNT SINAI, NY 11766-2330
Occupancy	Owner Occupied
Owner Type	Individual

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

Deeds, Mortgages & Sale History

Date	Document
Jul 12, 2022	Deed, Transfer · Stand-Alone Refinance LENOX FINANCIAL MORTGAGE
Dec 23, 2021	Deed, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 12, 2022 · Amount on File
Deed Sale	Jul 12, 2022 · Amount on File
Deed Book / Page	13164 / 557
Prior Transfer Date	Oct 23, 2021
Record Updated	Sep 20, 2026

July 2022: Deed, Transfer

Document Type	Deed
Jurisdiction	SUFFOLK NY
Recording Date	Jul 12, 2022
Property Address	139 CHESTNUT ST, MOUNT SINAI, NY 11766-2330
Document Number	0131640557
Book / Page	13164 / 557
Instrument Date	May 17, 2022
Transaction Type	Transfer
Record Updated	Feb 23, 2024
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	22 WAKEFIELD AVE, PORT WASHINGTON, NY 11050-4417

Mortgage

Document Number	0234370581
Date	Jul 12, 2022
Book Page	23437/581

Lender

Name	LENOX FINANCIAL MORTGAGE
Type	Mortgage Company

Agreement

Type	Stand-Alone Refinance
Amount	Amount on Record
Term	349 Months
Due	Aug 1, 2051

December 2021: Deed, Transfer

Document Type	Deed
Jurisdiction	SUFFOLK NY
Recording Date	Dec 23, 2021
Property Address	139 CHESTNUT ST, MOUNT SINAI, NY 11766-2330
Document Number	0131350476
Book / Page	13135 / 476
Instrument Date	Oct 23, 2021
Transaction Type	Transfer
Record Updated	Feb 23, 2024

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
Relationship	Irrevocable Trust
Address	57 BEAVERBROOK RD, BURLINGTON, MA 01803-1223

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	New York
County	Suffolk County
County Subdivision	Brookhaven Town
Unified School District	Mount Sinai Union Free School District (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2025		$3,000 Land $360 Building $2,640	$625,000 Land $67,925 Building $498,113
2024	$12,554.00
2023		$3,000 (-) Land $360 Building $2,640	$5,556 (+14.82%) Land $667 Building $4,889
2022	Homeowner's exemption Senior Citizen's exemption	$3,000 Land $360 Building $2,640	$4,839 Land $581 Building $4,258

Assessed value is set for property tax purposes, not a market price estimate; it is a fraction of this property's market value.

Flood

FEMA maps place 139 Chestnut St in Zone X, an area of minimal flood risk, though there have been 5 flood claims nearby since 1979.

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	4 in force
Nearby Flood Claims	5 (1979–1985)
Claims Outside the SFHA	5 of 5
Most Recent Claim	Sep 1985 · Hurricane Gloria

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

Wildfire risk around 139 Chestnut St is low, with a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 94% of the US · lower than 93% of New York
Wildfire Likelihood	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 197 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	980 / 880
Starlink Satellite	280 / 30

Cell Coverage

5G (outdoors only) and 4G LTE

Nearby Properties on Chestnut St

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures