NY Property Records
20 Prospect Ave
20 Prospect Ave
Islip · Suffolk County
210 · ResidentialSold $550,000 · Jul 2024
Owner of record
OwnerGcs1992 LLC
Mailing address4570 158TH ST · FLUSHING, NY, 11358
Assessment · 2025 roll
Land assessed$9,400
Total assessed$29,100
Est. annual tax$6,477 (2024, excl. special districts)
Lot
Size0.45 acres
Services & districts
School districtBrentwood (472812)
Recorded sales · 2
Deed$550,000Jul 26, 2024
seller ASSOCIATION, AS L U.S BANK NATIONAL
buyer GCS1992 LLC
Liber 13279, page 70
Deed$470,000Aug 8, 2023
seller JOSE LUNA
buyer US BANK NATIONAL ASSOC
Liber 13221, page 590
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page13279 / 70
SBL05000950002000140000
Print key95.-2-14
SWIS472889
Parcel ID47288905000950002000140000
Who owns 20 Prospect Ave?
20 Prospect Ave, Islip is owned by Gcs1992 LLC per the 2025 NYS assessment roll. It last sold for $550,000 in Jul 2024.
Nearby on Prospect 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