× Home › Property records › Suffolk County › Southampton › Riverside Ave › 91 Riverside Ave91 Riverside AveSouthampton · Suffolk County 210 · Residential OpenValue $499,187 ▾
Owner of record
Owner Fredy Sanmartin
Mailing address 91 RIVERSIDE AVE · FLANDERS NY 11901, NY
Assessment · 2025 roll
Land assessed $68,500
Total assessed $190,200
Est. annual tax $3,697 (2024, excl. special districts)
Building
Style Unknown
Year built 1987
Living area 1,199 sq ft
Bedrooms 2
Full baths 1
Heat No central
Fuel None
Services & districts
Water Private
Sewer Private
Utilities Gas & elec
School district Riverhead (473002)
Deed & identifiers
Deed book / page 12860 / 234
SBL 14300000020170000000
Print key 143.000-0002-017.000
SWIS 473689
Parcel ID 47368914300000020170000000
Who owns 91 Riverside Ave? 91 Riverside Ave, Southampton is owned by Fredy Sanmartin per the 2025 NYS assessment roll.
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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.
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