NY Property Records
20 18th Ave
20 18th Ave
Islip · Suffolk County
210 · ResidentialSold $415,000 · Aug 2023
Owner of record
OwnerKatia Diamond
Mailing address20 18TH AVE · BAY SHORE, NY, 11706
Assessment · 2025 roll
Land assessed$7,000
Total assessed$25,100
Est. annual tax$5,587 (2024, excl. special districts)
Lot
Size0.27 acres
Services & districts
School districtBrentwood (472812)
Recorded sales · 2
Deed$415,000Aug 1, 2023
seller KAREN L WELNER
buyer KATIA DIAMOND
Liber 13220, page 634
Deedno price statedNov 20, 2017
seller GERARD A. WELNER
buyer KAREN L. WELNER
Liber 12943, page 279
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page13220 / 634
SBL05002460002000310000
Print key246.-2-31
SWIS472889
Parcel ID47288905002460002000310000
Who owns 20 18th Ave?
20 18th Ave, Islip is owned by Katia Diamond per the 2025 NYS assessment roll. It last sold for $415,000 in Aug 2023.
Nearby on 18th 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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