Shaya Seidenfeld
MZS Realty
Developer, Owner
46 Main St #256 Monsey, NY 10952
5308 13th Ave #203 Brooklyn, NY 11219
MZS Realty NYC portfolio
$106.6 million -walkup 44%, development 28%, V1 10%; Bronx 97%, Brooklyn 2%*
1584th largest portfolio by dollar value
110,751 sqft – walkup 79%, mixed-use 5%, C1 5%; Bronx 91%, Brooklyn 8%
2353th largest by SF
26 properties – Bronx 92%, Brooklyn 7%
459th largest
215 residential units – Bronx 94%, Brooklyn 5%
1178th largest by residential units
0 foreclosures, 0 bankruptcies, 1 other court case.
Person Activity past 24 months:
Buyer signatory: 2 for $6.8 million
Borrower signatory: 10 for $67.5 million
Developer (new building or major alteration): 39 for 195,523 square feet
Top Ten Associated Companies:
First County Bank (2), Alpha Real Estate Funding (2), Protective Life Insurance Company (2), Antonino D’Amico (1), Monarch Realty Holdings (1), Amalgamated Bank (1), Security Mutual Life Insurance Company of New York (1), BridgeCity Capital (1), Grasshopper Bank (1), Commonwealth Business Bank (1)
Top Ten Associated People:
Ray A. Carle (2), Antonino D’Amico (1), Stephen Siminou (1), Gregory Pastor (1), Nicole Carroll (1), Charles V. Ford (1), Louis Lebovits (1), Arthur Birenbaum (1), Colin Jung (1), Steven A. Tsavaris (1)
Recent activity as signatory:
• MZS Realty borrowed $5 million from First County Bank for None on July 08, 2026.
• MZS Realty borrowed $6.1 million from First County Bank for 1140 Grant Avenue on July 08, 2026.
• Shaya Seidenfeld filed plans for major alteration for 3,976 sqft in Mott Haven, Bronx, on June 18, 2026.
• MZS Realty borrowed $18.5 million from Amalgamated Bank for 414 East 152nd Street, 414 East 152nd Street, and 414 East 152nd Street, Melrose, Bronx on February 27, 2026.
• MZS Realty borrowed $4.6 million from Grasshopper Bank for 1531 Nelson Avenue on December 05, 2025.
• MZS Realty borrowed $4.9 million from Protective Life Insurance Company for None on November 24, 2025.
• MZS Realty borrowed $9.8 million from Protective Life Insurance Company for 1821 Prospect Avenue on November 24, 2025.
• MZS Realty borrowed $8.6 million from Alpha Real Estate Funding for 882 Morris Avenue on October 21, 2025.
• MZS Realty borrowed $5 million from Security Mutual Life Insurance Company of New York for 2768 Matthews Avenue on July 21, 2025.
• Shaya Seidenfeld filed plans for new building for 77,778 sqft in Mt Eden, Bronx, on April 10, 2025.
Latest Stories:
• MZS Realty signs $18.5M refi with Amalgamated for 44-unit mixed-use in Melrose (April 22, 2026)
• MZS Realty pays $2.1M for dev site in Concourse Village (October 28, 2025)
• MZS Realty pays $4.6M to Monarch Realty for dev site in Mt Eden (March 12, 2025)
• Shaya Seidenfeld signs $13M construction loan for 44-unit project in Melrose (July 25, 2023)
Court Records:
