NY Property Records

91 Gillette Ave
Islip · Suffolk County

210 · Residential
Owner of record
OwnerEric J & Sandra Kosak
Mailing address91 GILLETTE AVE · SAYVILLE, NY, 11782
Assessment · 2025 roll
Land assessed$13,900
Total assessed$48,500
Est. annual tax$14,058 (2024, excl. special districts)
Lot
Size0.35 acres
Services & districts
School districtSayville (472804)
Deed & identifiers
SBL05003820009000230000
Print key382.-9-23
SWIS472889
Parcel ID47288905003820009000230000

Who owns 91 Gillette Ave?

91 Gillette Ave, Islip is owned by Eric J & Sandra Kosak per the 2025 NYS assessment roll.
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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