Mark Zeldin
BK Developers
BK Developers NYC portfolio
$7.4 million -elevator 100%; Queens 100%*
5347th largest portfolio by dollar value
34,736 sqft – elevator 100%; Queens 100%
4071th largest by SF
22 residential units – Queens 100%
3687th largest by residential units
0 foreclosures, 0 bankruptcies, 1 other court case.
Person Activity past 24 months:
Seller signatory: 1 for $4 million
Top Ten Associated Companies:
Valley National Bank (1), Rybak Development (1)
Top Ten Associated People:
Sergey Rybak (1)
Recent activity as signatory:
• BK Developers and Semyon Vays sold 157 Smith Street, Boerum Hill, Brooklyn for $4 million to Rybak Development on March 13, 2026.
• BK Developers borrowed $11.1 million from Valley National Bank for None on February 28, 2020.
• Mark Zeldin filed plans for new building for 5,055 sqft in South Slope, Brooklyn, on September 09, 2013.
• Mark Zeldin filed plans for new building in South Slope, Brooklyn, on January 29, 2007.