NY Property Records
16 William St
16 William St
Islip · Suffolk County
210 · ResidentialSold $365,000 · Jul 2020
Owner of record
OwnerSeydi P Castellon
Mailing address16 WILLIAM ST · CENTRAL ISLIP, NY, 11722
Assessment · 2025 roll
Land assessed$6,200
Total assessed$26,700
Est. annual tax$8,841 (2024, excl. special districts)
Lot
Size0.2 acres
Services & districts
School districtCentral Islip (472813)
Recorded sales · 1
Deed$365,000Jul 14, 2020
seller JASON A SOSA
buyer SEYDI P CASTELLON
Liber 13068, page 418
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page13068 / 418
SBL05000990002000190000
Print key99.-2-19
SWIS472889
Parcel ID47288905000990002000190000
Who owns 16 William St?
16 William St, Islip is owned by Seydi P Castellon per the 2025 NYS assessment roll. It last sold for $365,000 in Jul 2020.
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
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