NY Property Records

25 Deforest Ave
Islip · Suffolk County

210 · Residential
Owner of record
OwnerMatthew Kostik &
Mailing address25 DEFOREST AVE · WEST ISLIP, NY, 11795
Assessment · 2025 roll
Land assessed$12,600
Total assessed$38,100
Est. annual tax$10,275 (2024, excl. special districts)
Lot
Size0.21 acres
Services & districts
School districtWest Islip (472809)
Deed & identifiers
Deed book / page12751 / 41
SBL05004720002000750000
Print key472.-2-75
SWIS472889
Parcel ID47288905004720002000750000

Who owns 25 Deforest Ave?

25 Deforest Ave, Islip is owned by Matthew Kostik & 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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