NY Property Records
23 Hill Ave
23 Hill Ave
Smithtown · Suffolk County · 11767
$315,625Full market value210 · ResidentialSold $420,000 · May 2023
Owner of record
OwnerKoster, Louis
Mailing address23 Hill Ave · Nesconset, NY, 11767
Assessment · 2025 roll
Land assessed$330
Total assessed$2,525
Full market value$315,625
Est. annual tax$5,196 (2024, excl. special districts)
Building
StyleRanch
Year built1950
Living area776 sq ft
Bedrooms1
Full baths1
HeatHot wtr/stm
FuelOil
Lot
Size0.25 acres
Services & districts
WaterComm/public
SewerPrivate
UtilitiesElectric
School districtSachem (472205)
Recorded sales · 2
Deedno price statedJul 31, 2025
seller LOUIS KOSTER
buyer LOUIS KOSTER
Liber 13304, page 778
Deed$420,000May 10, 2023
seller ESTATE OF ALISON WILSON
buyer LOUIS KOSTER
Liber 13208, page 17
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page13304 / 778
SBL17100000010310000000
Print key171.-1-31
SWIS473489
Parcel ID47348917100000010310000000
Who owns 23 Hill Ave?
23 Hill Ave, Smithtown is owned by Koster, Louis per the 2025 NYS assessment roll. It last sold for $420,000 in May 2023.
Nearby on Hill Ave
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
Search by name or address · Browse all records