NY Property Records
104 Leopold Ave
104 Leopold Ave
Islip · Suffolk County
210 · Residential
Owner of record
OwnerMark & Joanna Castonguay
Mailing address104 LEOPOLD AVE · WEST ISLIP, NY, 11795
Assessment · 2025 roll
Land assessed$7,500
Total assessed$40,900
Est. annual tax$11,030 (2024, excl. special districts)
Lot
Size0.25 acres
Services & districts
School districtWest Islip (472809)
Deed & identifiers
SBL05003370003000220000
Print key337.-3-22
SWIS472889
Parcel ID47288905003370003000220000
Who owns 104 Leopold Ave?
104 Leopold Ave, Islip is owned by Mark & Joanna Castonguay per the 2025 NYS assessment roll.
Nearby on Leopold Ave
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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