NY Property Records
21 Doncaster Ave
21 Doncaster Ave
Islip · Suffolk County
210 · ResidentialSold $405,000 · Sep 2017
Owner of record
OwnerMatthew J & Caitlin Cianfrocco
Mailing address21 DONCASTER AVE · WEST ISLIP, NY, 11795
Assessment · 2025 roll
Land assessed$8,400
Total assessed$40,600
Est. annual tax$10,949 (2024, excl. special districts)
Lot
Size0.25 acres
Services & districts
School districtWest Islip (472809)
Recorded sales · 1
Deed$405,000Sep 28, 2017
seller CHARLES GORDON EVRARD
buyer MATTHEW J. CIANFROCCO
Liber 12937, page 833
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page12937 / 833
SBL05003620001000080000
Print key362.-1-8
SWIS472889
Parcel ID47288905003620001000080000
Who owns 21 Doncaster Ave?
21 Doncaster Ave, Islip is owned by Matthew J & Caitlin Cianfrocco per the 2025 NYS assessment roll. It last sold for $405,000 in Sep 2017.
Nearby on Doncaster 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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