NY Property Records
21 Colonial Rd
21 Colonial Rd
Smithtown · Suffolk County · 11787
$479,375Full market value210 · Residential
Owner of record
OwnerKnopf, Robert J Jr
AlsoHalstead-Knopf, Janine A
Mailing address21 Colonial Rd · Smithtown, NY, 11787
Assessment · 2025 roll
Land assessed$150
Total assessed$3,835
Full market value$479,375
Est. annual tax$9,102 (2024, excl. special districts)
Building
StyleRanch
Year built1955
Living area1,305 sq ft
Bedrooms3
Full baths1
HeatHot wtr/stm
FuelOil
Lot
Size0.3 acres
Services & districts
WaterComm/public
SewerPrivate
UtilitiesGas & elec
School districtSmithtown (473401)
Recorded sales · 1
Deedno price statedMar 22, 2021
seller ROBERT J. KNOPF, JR.
buyer ROBERT J. KNOPF, JR.
Liber 13111, page 30
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page13111 / 30
SBL10100000040100000000
Print key101.-4-10
SWIS473489
Parcel ID47348910100000040100000000
Who owns 21 Colonial Rd?
21 Colonial Rd, Smithtown is owned by Knopf, Robert J Jr per the 2025 NYS assessment roll.
Nearby on Colonial Rd
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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