NY Property Records
6 Sullivan St
6 Sullivan St
Brookhaven · Suffolk County · 117790000
$604,166Full market value210 · Residential
Owner of record
OwnerCosgrove Family Trust U/Ashayla & Matthew Cosgrove Trustees
Mailing address6 SULLIVAN ST · RONKONKOMA, NY, 11779
Assessment · 2025 roll
Land assessed$100
Total assessed$2,900
Full market value$604,166
Est. annual tax$9,418 (2024, excl. special districts)
Lot
Size0.21 acres
Lot sq ft9,148
Services & districts
School districtSachem (472205)
Recorded sales · 1
Deedno price statedNov 22, 2024
seller JOHN T COSGROVE JR
buyer COSGROVE FAMILY TR
Liber 13285, page 243
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page13285 / 243
SBL02006490002000150000
Print key649.00-02-015.000
SWIS472289
Parcel ID47228902006490002000150000
Who owns 6 Sullivan St?
6 Sullivan St, Brookhaven is owned by Cosgrove Family Trust U/Ashayla & Matthew Cosgrove Trustees per the 2025 NYS assessment roll.
Nearby on Sullivan 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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