NY Property Records
12 William St
12 William St
Brookhaven · Suffolk County · 117760000
$447,917Full market value210 · ResidentialSold $590,000 · Aug 2025
Owner of record
OwnerCox Alten R Irrevocable Trustdennis M Cox & Elaine F Madden Trustees
Mailing address12 WILLIAM ST · PORT JEFF STA, NY, 11776
Assessment · 2025 roll
Land assessed$200
Total assessed$2,150
Full market value$447,917
Lot
Size0.23 acres
Lot sq ft10,019
Services & districts
School districtBrookhaven-Comsewogue (472203)
Recorded sales · 4
Deed$590,000Aug 28, 2025
seller MATTHEW HAWLEY IRA
buyer JUAN DILONEX MIESES
Liber 13309, page 863
Deed$400,000Mar 24, 2025
seller THE ALTEN R COX IRREV TR
buyer MATTHEW HAWLEY IRA EQUITY TRUST COMPANY FBO
Liber 13298, page 996
Deedno price statedMay 25, 2018
seller COX, ALTEN R
buyer MADDEN DENNIS COX AND ELAINE F
Liber 12968, page 344
Show all 4
Deedno price statedMay 31, 2017
seller ALTEN R & MARY H COX
buyer ALTEN COX
Liber 12919, page 493
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page13309 / 863
SBL02001380003000170000
Print key138.00-03-017.000
SWIS472289
Parcel ID47228902001380003000170000
Who owns 12 William St?
12 William St, Brookhaven is owned by Cox Alten R Irrevocable Trustdennis M Cox & Elaine F Madden Trustees per the 2025 NYS assessment roll. It last sold for $590,000 in Aug 2025.
Nearby on William St
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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