20 Manhattan Avenue

Owner: Mordechai Z. Halberstam

Debt: August 14, 2025, $11.6 million

Built: 1931

Renovated: 2000

SF: 22,500

Dwelling units: 24

No. of buildings: 1

Class: Over Six Families Without Stores (C1)

Floors: 4

Legacy BBLs: 3031130004

HPD Ownership Registration Information

Last registered: 2025-10-22 (expires 2026-09-01)

Transactions:

• Mordechai Z. Halberstam borrowed $11.6 million from CMFG Life Insurance Company for 16-20 Manhattan Avenue and 32 Varet Street, Williamsburg, Brooklyn on August 14, 2025.

• Mordechai Halberstam borrowed $12.2 million from Santander Bank for 20 Manhattan Avenue, 32 Varet Street, East Williamsburg, Brooklyn on April 09, 2020.

Development:

• Mordechai Halberstam filed plans for alteration in Williamsburg, Brooklyn, on July 29, 2022.

• Mordechai Halberstam filed plans for alteration in Williamsburg, Brooklyn, on June 08, 2022.

• Mordechai Halberstam filed plans for alteration in Williamsburg, Brooklyn, on July 22, 2021.

• Mordechai Halberstam filed plans for alteration in Williamsburg, Brooklyn, on January 30, 2018.

• Mordechai Halberstam filed plans for alteration in Williamsburg, Brooklyn, on June 26, 2000.

Violations:

According to city public data, the properties have received $50 in OATH penalties in the last year.

Latest Stories:

• Mordechai Z. Halberstam signs $11.6M refi with CMFG for two properties in Williamsburg (August 19, 2025)

• Mordechai Halberstam borrows $12M from Santander Bank to refi multifamily property in East Williamsburg (April 10, 2020)