NY Property Records
20 William Ave
20 William Ave
Islip · Suffolk County
210 · ResidentialSold $194,000 · Dec 2016
Owner of record
OwnerChanell & Holness Mothersill
Mailing address20 WILLIAM AVE · CENTRAL ISLIP, NY, 11722
Assessment · 2025 roll
Land assessed$6,900
Total assessed$25,650
Est. annual tax$8,493 (2024, excl. special districts)
Lot
Size0.21 acres
Services & districts
School districtCentral Islip (472813)
Recorded sales · 1
Deed$194,000Dec 19, 2016
seller YVONNE WILLIAMS
buyer CHANELLE MOTHERSILL
Liber 12899, page 556
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page12899 / 556
SBL05000980002000120000
Print key98.-2-12
SWIS472889
Parcel ID47288905000980002000120000
Who owns 20 William Ave?
20 William Ave, Islip is owned by Chanell & Holness Mothersill per the 2025 NYS assessment roll. It last sold for $194,000 in Dec 2016.
Nearby on William 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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