NY Property Records
23 W End Ave
23 W End Ave
Islip · Suffolk County
210 · ResidentialSold $585,000 · Mar 2021
Owner of record
OwnerLuis L Duy Siguencia &
Mailing address23 W END AVE · BRENTWOOD, NY, 11717
Assessment · 2025 roll
Land assessed$9,000
Total assessed$50,100
Est. annual tax$11,152 (2024, excl. special districts)
Lot
Size0.45 acres
Services & districts
School districtBrentwood (472812)
Recorded sales · 2
Deed$585,000Mar 15, 2021
seller INC NORTHFIELD CONSTRUCTION
buyer LUIS L DUY SIGUENCIA
Liber 13102, page 65
Deed$147,000Jan 10, 2019
seller AS REFEREE CHERYL F. MINTZ, ESQ.
buyer INC. NORTHFIELD CONSTRUCTION
Liber 12999, page 592
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page13102 / 65
SBL05000520001000820001
Print key52.-1-82.1
SWIS472889
Parcel ID47288905000520001000820001
Who owns 23 W End Ave?
23 W End Ave, Islip is owned by Luis L Duy Siguencia & per the 2025 NYS assessment roll. It last sold for $585,000 in Mar 2021.
Nearby on W End 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
Search by name or address · Browse all records