50 Riverside Boulevard, 23B, Manhattan 10069

This property may be subject to NYC’s non-primary residence (pied-à-terre) surcharge.

Photo of 50 Riverside Boulevard, 23B
© Mapillary contributors
Market value (FY27)
$1,455,266
Estimated annual surcharge
If non-primary, est. $58,210/yr · 4.0% tier (Class 2, $1M–$3M)
Owner of record
Richard Koenigsberg, As Trustee
Borough
Manhattan
Block / Lot
1171 / 2550
BBL (PARID)
1011712550
Tax class
2
Building class
R4
Apartment
23B
Condo number
102456

Estimate = phase-1 rate × FY27 DOF market value. Co-op unit values are imputed by DOF at determination; see methodology.

Ownership records

Last deed recorded September 29, 2022 for $7,615,000. Gallagher, Sean Joseph → Richard Koenigsberg, As Trustee; Riverside Trust

  • Seller Gallagher, Sean Joseph
    50 Riverside Blvd; Unit 23B, New York, NY 10069
  • Buyer Richard Koenigsberg, As Trustee
    1675 Broadway; 20th Fl, New York, NY 10019
  • Buyer Riverside Trust
    1675 Broadway; 20th Fl, New York, NY 10019

Public ACRIS deed records and HPD registration data. LLC officers are not published by New York State; parties and addresses shown are as recorded.