Janusz Sendowski pays $18M for three walkups in Williamsburg, Kensington, down from $28.5M

Janusz Sendowski paid $18 million to Soonbin Kim for two Brooklyn walkup buildings, one in Williamsburg and the other in Kensington, in two transactions.

In the first transaction, Janusz Sendowski through the entity 331 Keap, LLC paid $9 million to Soonbin Kim through the entity West 8th Street Associates,LLC for the 36-unit residential walkup building (C1) at 331 Keap Street in Williamsburg, Brooklyn. The expected use is cash flowing.
The deal closed on August 1, 2025 and was recorded on August 12, 2025. The property has 21,740 square feet of built space according to a PincusCo analysis of city data. The sale price per built square foot is $415 per the PincusCo analysis. The seller bought the property on February 15, 2019, for $15.5 million.

In the second, Janusz Sendowski through the entity Ocean Bk. LLC paid $9 million to Soonbin Kim through the entity Jandsoo, LLC for the 16-unit residential walkup building (C1) at 241 Ocean Parkway and the 16-unit residential walkup building (C1) at 245 Ocean Parkway in Kensington, Brooklyn. The expected use is cash flowing.
The deals closed on August 1, 2025 and one was recorded on August 12 and the other on August 14, 2025. The seller bought the properties on July 18, 2018, for $13 million.

The signatory for Soonbin Kim was Kim Soonbin . The signatory for Janusz Sendowski was Janusz Sendowski. The contract date was April 18, 2025.

Prior sales and revenue

Prior to this transaction, PincusCo has records that the buyer Janusz Sendowski purchased six properties in six transactions for a total of $107.5 million and has no record it sold any properties over the past 24 months.
The seller Soonbin Kim had not purchased any other properties and had not sold any properties over the same time period. The former owners according to the Department of Housing Preservation and Development includes Soonbin Kim, head officer and Jae Kim, site manager. The business entity is West 8th Street Associates Llc. The 21,740-square-foot property generated revenue of $803,053 or $37 per square foot, according to the most recent income and expense figures.

The property

The residential walkup building with 36 residential units in Williamsburg has 21,740 square feet of built space according to a PincusCo analysis of city data. The parcel has frontage of 79 feet and is 69 feet deep with a total lot size of 5,451 square feet. The zoning is R6 which allows for up to 2.43 times floor area ratio (FAR) for residential. The city-designated market value for the property in 2022 is $4.2 million. The property has 13 rent regulated units according to city tax records from 2023.

Violations and lawsuits

There were no lawsuits or bankruptcies filed against the property for the past 24 months. In addition, according to city public data, the property has received one DOB violation, eight housing violations, and $1,230 in OATH penalties in the last year.

Development

There are no active new building construction projects or major alteration projects with initial costs more than $1 million on this tax lot.

The block

On this tax block, PincusCo has identified the owners of five of the six commercial properties representing 62,932 square feet of the 66,165 square feet. The largest owner is Naftali Hager, followed by Janusz Sendowski and then Nick Poulakas.
There are no active new building construction projects on this tax block.

The majority, or 88 percent of the 66,165 square feet of built space are walkup buildings, with mixed-use buildings next occupying 12 percent of the space.

The seller

The PincusCo database currently indicates that Soonbin Kim owned at least two commercial properties with 12 residential units in New York City with 15,776 square feet and a city-determined market value of $4 million. (Market value is typically about 50% of actual value.) Within the portfolio, all identified are walkup properties. They are all located in Brooklyn.

The buyer

The PincusCo database currently indicates that Janusz Sendowski owned at least 12 commercial properties with 392 residential units in New York City with 470,796 square feet and a city-determined market value of $73 million. (Market value is typically about 50% of actual value.) The portfolio has $110.2 million in debt, with top three lenders as JPMorgan Chase, Deutsche Bank, and Bankwell Bank respectively. Within the portfolio, the bulk, or 75 percent of the 470,796 square feet of built space are elevator properties, with walkup properties next occupying 14 percent of the space. The bulk, or 77 percent of the built space, is in Manhattan, with Brooklyn next at 12 percent of the space.

Direct link to Acris document. 331 Keap Street link
Direct link to Acris document. 241 Ocean Parkway link