11 Knapp Rd, Mastic Beach, NY 11951 Property Records

Suffolk County and Brookhaven Town property record for 11 Knapp Rd, Mastic Beach, NY 11951

Property Summary

Property TypeSingle Family Home
Lot Size0.23 acres (10,019 sqft)
OwnerIndividual Name on File
Last Sale$389,000 (Nov 2022)
Tax Bill$7,070 (2024)
Deeds & MortgagesNov 2022 Sale & Mortgage
Oct 2021 Transfer
+ 3 more
Flood ZoneZone X (minimal risk)
APN0200-978.90-09.00-063.000

Property Details

APN / Parcel Number

Primary APN0200-978.90-09.00-063.000
Alternative APNs
  • 472289 978.90-09-063.000
  • 0209021000200063000
  • 00004323860
  • 4323860

Exterior

Lot Area10,019 sqft (0.23 acres)
View / LotWaterfront

Location & Zoning

Account Number4323860
Street Address11 KNAPP RD
CityMASTIC BEACH
StateNY
Zip11951-3301
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal Block8900
Legal Lot Number900
JurisdictionSUFFOLK NY
Township / Civil DivisionBROOKHAVEN
Census Block Group1
Census Block1026
Census Tract159516

Owner

11 Knapp Rd is owned and occupied by an individual who bought it in November 2022.

Source: Suffolk County and Brookhaven Town records, as of October 6, 2026

Owner of RecordIndividual Name on File
Mailing Address11 KNAPP RD, MASTIC BEACH, NY 11951-3301
OccupancyOwner Occupied
Owner TypeIndividual

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

DateDocument
Nov 7, 2022Deed, Transfer · FHA Mortgage
HOME POINT FINANCIAL CORPORATION
Oct 13, 2021Quit Claim Deed, Transfer
Quitclaim
Aug 10, 2021Deed, Transfer
Dec 15, 2017Deed of Trust, Mortgage
OTHER INSTITUTIONAL LENDERS
Oct 18, 2017Grant Deed, Construction Loan · Construction Mortgage
CRL DEV LLC

Assessor's Deed Record

Deed NamesName on Deed
Last SaleNov 7, 2022 · Amount on File
Deed SaleNov 7, 2022 · Amount on File
Prior SaleAug 10, 2021 · Amount on File
Deed Book / Page13176 / 812
Record UpdatedOct 29, 2026

November 2022: Deed, Transfer

Document TypeDeed
JurisdictionSUFFOLK NY
Recording DateNov 7, 2022
Property Address11 KNAPP RD, MASTIC BEACH, NY 11951-3301
Document Number0131760812
Book / Page13176 / 812
Instrument DateAug 3, 2022
Transaction TypeTransfer
Record UpdatedDec 26, 2023
Title CompanyFIRST AMERICAN TITLE

Transaction

AmountAmount on Record
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address929 COUNTY ROAD 39 APT 22, 22, SOUTHAMPTON, NY 11968-5261

Mortgage

Document Number0023460174
DateNov 7, 2022
Instrument23460/174
Lender
NameHOME POINT FINANCIAL CORPORATION
TypeGovernment Agency
Agreement
TypeFHA Mortgage
AmountAmount on Record

October 2021: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionSUFFOLK NY
Recording DateOct 13, 2021
Property Address11 KNAPP RD, MASTIC BEACH, NY 11951-3301
Document Number0131240002
Book / Page13124 / 2
Instrument DateSep 29, 2021
Transaction TypeTransfer
Record UpdatedMar 17, 2023

Transaction

Tax$0.00
Amount AccuracyNo Consideration Stated
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address11 KNAPP RD, MASTIC BEACH, NY 11951-3301

August 2021: Deed, Transfer

Document TypeDeed
JurisdictionSUFFOLK NY
Recording DateAug 10, 2021
Property Address11 KNAPP RD, MASTIC BEACH, NY 11951-3301
Document Number0131150532
Book / Page13115 / 532
Instrument DateJun 28, 2021
Transaction TypeTransfer
Record UpdatedJan 7, 2022

Transaction

AmountAmount on Record
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Lis Pendens
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipTenants in Common
Address616 TAYLOR AVE, EAST PATCHOGUE, NY 11772-5125

December 2017: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionSUFFOLK NY
Property Address11 KNAPP RD, MASTIC BEACH, NY 11951-3301
Document Number0229030183
Instrument DateDec 15, 2017
Transaction TypeMortgage
Record UpdatedNov 27, 2019
Title CompanySERVICELINK

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address149 HARNED RD COMMACK NY 117254205, COMMACK, NY 11725-4205

Mortgage

Document Number0229030183
DateFeb 22, 2018
Book Page022903/000183
Lender
NameOTHER INSTITUTIONAL LENDERS
TypeBank
AddressAUSTIN, TX 78758
Agreement
AmountAmount on Record
Term360 Months
DueFeb 21, 2048

October 2017: Grant Deed, Construction Loan

Document TypeGrant Deed
JurisdictionSUFFOLK NY
Recording DateOct 18, 2017
Property Address11 KNAPP RD, MASTIC BEACH, NY 11951-3301
Document Number0129340306
Book / Page012934 / 000306
Instrument DateOct 3, 2017
Transaction TypeConstruction Loan
Record UpdatedNov 27, 2019
Title CompanyRAM ABSTRACT LIMITED, RAM ABSTRACT LTD

Transaction

AmountAmount on Record
Tax$288.00
Amount AccuracyConfirmed
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCompany
Address149 HARNED RD COMMACK NY 117254205, COMMACK, NY 11725-4205

Mortgage

Document Number228650355
DateOct 18, 2017
Book Page022865/000355
Lender
NameCRL DEV LLC
Address70 W MAIN ST, EAST ISLIP, NY 11730-2323
Agreement
TypeConstruction Mortgage
AmountAmount on Record
Term12 Months
DueOct 17, 2018

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateNew York
CountySuffolk County
County SubdivisionBrookhaven Town
Unified School DistrictWilliam Floyd Union Free School District (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2025$1,700 Land $200 Building $1,500$354,167 Land $37,736 Building $283,019
2024$7,070.00
2023$1,700 (-) Land $200 Building $1,500$3,148 (+14.81%) Land $370 Building $2,778
2022$1,700 Land $200 Building $1,500$2,742 Land $323 Building $2,419

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 11 Knapp Rd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2010.

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 File
median of 14 policies
Nearby Flood Policies14 in force
Nearby Flood Claims1 (2010)
Claims Outside the SFHA1 of 1
Most Recent ClaimMar 2010 · Severe Storms And Flooding

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 11 Knapp Rd is low, with less than a 0.01% annual chance of wildfire.

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

Wildfire RiskLow
lower than 99.1% of the US · lower than 99.2% 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 460 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
T-Mobile
Fixed Wireless
100 / 20

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