NY Property Records
131 Helderberg Ave
131 Helderberg Ave
Altamont · Albany County
$372,000Full market value220 · ResidentialSold $350,000 · Sep 2021
Owner of record
OwnerGwiazdowski, Mark
AlsoGwiazdowski, Sarah
Mailing address131 Helderberg Ave · Altamont, NY, 12009
Assessment · 2025 roll
Land assessed$56,000
Total assessed$279,000
Full market value$372,000
Est. annual tax$7,238 (2024, excl. special districts)
Building
StyleOld style
Year built1900
Living area2,496 sq ft
Bedrooms4
Full baths2
HeatHot wtr/stm
FuelOil
Lot
Size1.0 acres
Services & districts
WaterComm/public
SewerComm/public
UtilitiesGas & elec
School districtGuilderland (013002)
Recorded sales · 1
Deed$350,000Sep 2, 2021
seller JOHN SCHILLINGER
buyer MARK GWIAZDOWSKI
Liber 2021, page 27955
From NYS RP-5217 transfer reports. For the deed itself, use the liber and page at the county clerk.
Deed & identifiers
Deed book / page2021 / 27955
SBL04800600010050000000
Print key48.06-1-5
SWIS013001
Parcel ID01300104800600010050000000
Who owns 131 Helderberg Ave?
131 Helderberg Ave, Altamont is owned by Gwiazdowski, Mark per the 2025 NYS assessment roll. It last sold for $350,000 in Sep 2021.
Nearby on Helderberg 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
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