NY Property Records
10 William St
10 William St
Islip · Suffolk County
210 · Residential
Owner of record
OwnerRobert R Mulvey (Le)
Mailing address10 WILLIAM ST · BRENTWOOD, NY, 11717
Assessment · 2025 roll
Land assessed$11,700
Total assessed$31,500
Est. annual tax$6,646 (2024, excl. special districts)
Lot
Size0.45 acres
Services & districts
School districtBrentwood (472812)
Recorded sales · 1
Deedno price statedJan 31, 2019
seller ROBERT R. MULVEY
buyer THERESA MULVEY
Liber 13005, page 622
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page13005 / 622
SBL05001140002000380000
Print key114.-2-38
SWIS472889
Parcel ID47288905001140002000380000
Who owns 10 William St?
10 William St, Islip is owned by Robert R Mulvey (Le) per the 2025 NYS assessment roll.
Nearby on William St
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
Search by name or address · Browse all records