NY Property Records
399 Williams Way N
399 Williams Way N
Riverhead · Suffolk County
$725,490Full market value210 · Residential
Owner of record
OwnerMastillone, David J
AlsoMastillone, Phyllis J
Mailing address399 Williams Way N · Calverton, NY, 11933
Assessment · 2025 roll
Land assessed$11,700
Total assessed$59,200
Full market value$725,490
Est. annual tax$13,121 (2024, excl. special districts)
Building
StyleRanch
Year built1995
Living area1,963 sq ft
Bedrooms3
Full baths2
HeatHot wtr/stm
FuelOil
Lot
Size0.62 acres
Services & districts
WaterPrivate
SewerUnknown
UtilitiesElectric
School districtRiverhead (473002)
Recorded sales · 1
Deed$1Aug 11, 2025
seller DAVID J MASTILLONE
buyer IRREV TR PHYLLIS MASTILLONE
Liber 13312, page 222
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page12338 / 784
SBL06100000010030070000
Print key61.-1-3.7
SWIS473000
Parcel ID47300006100000010030070000
Who owns 399 Williams Way N?
399 Williams Way N, Riverhead is owned by Mastillone, David J per the 2025 NYS assessment roll.
Nearby on Williams Way N
Public record, NYS tax roll 2025. Values are the assessor's, not an appraisal. Provided for informational purposes only — accuracy and completeness are not warranted or guaranteed; verify against official sources before relying on it. Disclaimer · Request redaction
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