NY Property Records
354 Boulder St
354 Boulder St
Islip · Suffolk County
220 · ResidentialSold $390,000 · Oct 2016
Owner of record
OwnerMarcin Serafin
Mailing address354 BOULDER ST · RONKONKOMA, NY, 11779
Assessment · 2025 roll
Land assessed$8,500
Total assessed$39,400
Est. annual tax$10,468 (2024, excl. special districts)
Lot
Size0.15 acres
Services & districts
School districtConnetquot (472807)
Recorded sales · 1
Deed$390,000Oct 7, 2016
seller THERESA TRIFARO
buyer MARCIN SERAFIN
Liber 12885, page 740
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page12885 / 740
SBL05000320001000750000
Print key32.-1-75
SWIS472889
Parcel ID47288905000320001000750000
Who owns 354 Boulder St?
354 Boulder St, Islip is owned by Marcin Serafin per the 2025 NYS assessment roll. It last sold for $390,000 in Oct 2016.
Nearby on Boulder 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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