261 18 Street

Owner: Shlomo Karpen

Debt: March 05, 2026, $14.5 million

Built: 1905

Renovated: 2000

SF: 40,000

Dwelling units: 36

No. of buildings: 1

Class: Converted (D5)

Floors: 4

Transactions:

• Shlomo Karpen borrowed $14.5 million from Valley National Bank for 255 18th Street, Greenwood Heights, Brooklyn on March 05, 2026.

• Shlomo Karpen borrowed $9.3 million from Popular Bank for 255 18th Street, Greenwood Heights, Brooklyn on December 27, 2022.

Development:

• Moses Karpen filed major alteration job 322066072 for 39,402 sqft R-2 building with 29 apartments in Greenwood Heights, Brooklyn, on April 26, 2019.

• Chester Strulovich filed major alteration job 301016898 for J-2 building with 29 apartments in Greenwood Heights, Brooklyn, on April 11, 2000.

• Moses Karpen filed alteration job B01288506 for 10,000 sqft R-2 building with 36 apartments in Greenwood Heights, Brooklyn, on September 26, 2025.

• Moses Karpen filed alteration job B01259468 for 64 sqft R-2 building with 36 apartments in Greenwood Heights, Brooklyn, on July 29, 2025.

• David Serby filed alteration job B01117423 for building in Greenwood Heights, Brooklyn, on September 27, 2024.

• Moses Karpen filed alteration job B00870217 for 49,524 sqft building with 36 apartments in Greenwood Heights, Brooklyn, on May 10, 2023.

• Moses Lefkowitz filed alteration job B00364902 for 40,000 sqft R-2 building with 35 apartments in Greenwood Heights, Brooklyn, on November 04, 2020.

Violations:

According to city public data, the properties have received one DOB violation, $68,407 in ECB penalties, $74,407 in OATH penalties, and one housing litigation in the last year.