288 Union Avenue
Williamsburg, Brooklyn
Parcel ID (BBL): 3030220003
Owner: David Grunfeld
Debt: December 31, 2020, $15.2 million
Built: 2019
SF: 20,221
Dwelling units: 25
No. of buildings: 1
Class: Semi-fireproof (Without Stores) (D1)
Floors: 7
Legacy BBLs: 3030220003
HPD Ownership Registration Information
Last registered: 2025-10-06 (expires 2026-09-01)
Gw Union Llc
Corporate Owner
290 UNION AVENUE Brooklyn, NY, 11211
Site Manager
Transactions:
• Joel Wieder borrowed $15.2 million from Berkadia Commercial Mortgage for 288 Union Avenue, East Williamsburg, Brooklyn on December 31, 2020.
Development:
• David Grunfeld filed plans for alteration in Williamsburg, Brooklyn, on November 07, 2019.
• Nikolaos Poubourids filed plans for alteration in Williamsburg, Brooklyn, on August 13, 2019.
• David Grunfeld filed plans for alteration in Williamsburg, Brooklyn, on August 15, 2018.
• David Grunfeld filed plans for A3 in Williamsburg, Brooklyn, on January 24, 2019.
• David Grunfeld filed plans for demolition in Williamsburg, Brooklyn, on June 26, 2018.
Violations:
According to city public data, the properties have received $855 in OATH penalties in the last year.