639 UNION STREET
639 UNION STREET is a Class C1 (walk-up, over six families) building in Brooklyn (BBL 3004340054) built in 1931, with 8 residential units across 4 floors.
The building is in NYC community district 306, council district 39, zoning district M1-4/R7A, on a 2,660-square-foot lot with a building footprint of 6,160 square feet.
The current registered owner of record per NYC PLUTO is 639 UNION STREET LLC.
MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
The building is registered with NYC HPD's landlord-registration system and has no open HPD housing-maintenance code violations on record as of May 18, 2026.
Data sourced daily from NYC PLUTO (Department of City Planning), NYC ACRIS (Department of Finance), and NYC HPD housing-maintenance code violations.
Owner of record
HPD registered contacts
- Head OfficerERIC NACHIMOVSKY
- Corporate Owner639 UNION STREET, LLC
- Managing Agentmyriam nachimovsky
- Site Managerlouis virella
Most recent deed
Recent ACRIS documents (last 2)
Building stats
- Zoning:
- M1-4/R7A
- Lot size:
- 2,660 sqft
- Building area:
- 6,160 sqft
- Floors:
- 4
- Assessed value:
- $1.1M
- Community district:
- 306
- Council district:
- 39
HPD violations
Recent HPD violation details
- Class AInspected Jun 11, 2025(A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD…
- Class AInspected Jul 25, 2024§ 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT AT CEILING AT PUBLIC HALL, 4th STORY
- Class AInspected Jul 25, 2024§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE FIRE RETARDANT MATERIAL AT CEILING AT PUBLIC HALL, 4th STOR…
- Class BInspected Nov 16, 2023§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE 1ST CONCRETE TREAD FROM BOTTOM AT STOOP
- Class CInspected Jul 8, 2023§ 27-2005, 27-2007, 27-2041.1 HMC, §238, § 309; § 107 (2) ( C) MDL AND 28 RCNY §25-171: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MIS…
Recent ACRIS activity
Frequently asked questions about 639 UNION STREET
Who owns 639 UNION STREET?
The current registered owner of record for 639 UNION STREET per NYC PLUTO is 639 UNION STREET LLC. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 639 UNION STREET last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 639 UNION STREET in the last 5 years of recorded NYC public-records data. NYC ACRIS coverage extends back to 1966; an absence in our 5-year window typically means either the BBL has not transacted recently, or the most recent recorded document is not a DEED type (such as a refinance rather than a sale).
How many HPD violations does 639 UNION STREET have?
No open HPD housing-maintenance code violations are on record for 639 UNION STREET as of May 18, 2026. The building is registered with NYC HPD's landlord-registration system. HPD violation data is pulled daily from the NYC Open Data violations feed.
What is the assessed value of 639 UNION STREET?
NYC Department of Finance assesses 639 UNION STREET at $1.07M for the current tax year. NYC assesses property at a fraction of estimated market value (the assessment ratio varies by tax class — 6% for tax class 1 one-to-three-family dwellings, approximately 45% for tax class 2 rental apartment buildings), so the market value implied by this assessment is meaningfully higher. Assessment data is published by NYC Department of Finance.
What building class is 639 UNION STREET and what does that mean?
639 UNION STREET is NYC building class C1 — Walk-up, over six families. A 3-to-6-story walk-up apartment building with more than 6 residential units. Building class is assigned by NYC Department of Finance and recorded in PLUTO; it determines the property's tax class and the regulatory regime that applies.