PiedWatch

34 Sidney Place, Brooklyn 11201

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

Photo of 34 Sidney Place
© Mapillary contributors
Market value (FY27)
$6,179,000
Estimated annual surcharge
If non-primary, est. $49,432/yr · 0.8% tier (Class 1, $5M–$15M)
Owner of record
Sealfon, Stuart
Borough
Brooklyn
Block / Lot
263 / 53
BBL (PARID)
3002630053
Tax class
1
Building class
B3

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 March 16, 2026 for $2,520,000. Icahn School Of Medicine At Mount Sinai; Mount Sinai School Of Medicine Of The Cuny → Gelernter Sealfon, Celia; Gelernter, Celia; Sealfon, Stuart

  • Buyer Gelernter Sealfon, Celia
    34 Sidney Pl, Brooklyn, NY 112014607
  • Seller Icahn School Of Medicine At Mount Sinai
    Attn: Sean Marino, New York, NY 100296574
  • Buyer Gelernter, Celia
    34 Sidney Pl, Brooklyn, NY 112014607
  • Seller Mount Sinai School Of Medicine Of The Cuny
    Attn: Sean Marino, New York, NY 100296574
  • Buyer Sealfon, Stuart
    34 Sidney Pl, Brooklyn, NY 112014607

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

Historic photos

  • 1940s tax photo of 34 Sidney Place, NYC

    1939–41 tax photo · © City of New York, NYC Municipal Archives · via 1940s.nyc

  • 1980s tax photo of 34 Sidney Place, NYC

    1980s tax photo · © City of New York, NYC Municipal Archives · via 1940s.nyc

NYC Municipal Archives tax photographs — view on 1940s.nyc (opens in new tab). Images © City of New York; bulk/commercial reuse requires Archives permission.

View deeds & mortgages in ACRIS