1821 Prospect Avenue

Owner: Mzs Realty

Debt: December 10, 2025, $9.8 million

Built: 2022

Renovated: 2020

SF: 17,620

Dwelling units: 33

No. of buildings: 1

Class: Semi-fireproof (Without Stores) (D1)

Floors: 7

Legacy BBLs: 2029490073

Transactions:

• MZS Realty borrowed $9.8 million from Protective Life Insurance Company for 1821 Prospect Avenue, East Morrisania, Bronx on December 10, 2025.

• Shaya Seidenfeld borrowed $8.2 million from BridgeCity Capital for 1821 Prospect Avenue, East Morrisania, Bronx on March 21, 2024.

• Shaya Seidenfeld borrowed $5.9 million from Northeast Community Bank for 1821 Prospect Avenue, East Morrisania, Bronx on March 31, 2022.

Development:

• Shaya Seidenfeld filed plans for alteration in East Morrisania, Bronx, on May 01, 2023.

• Shaya Seidenfeld filed plans for alteration in East Morrisania, Bronx, on April 18, 2023.

• Shaya Seidenfeld filed plans for alteration in East Morrisania, Bronx, on February 24, 2023.

• Shaya Seidenfeld filed plans for alteration in East Morrisania, Bronx, on June 24, 2021.

• Shaya Seidenfeld filed plans for alteration in East Morrisania, Bronx, on June 10, 2021.

Violations:

According to city public data, the properties have received $1,800 in OATH penalties in the last year.