520 EAST 21 STREET
520 EAST 21 STREET is a Class D1 (elevator, semi-fireproof) building in Brooklyn (BBL 3051840006) built in 1951, with 102 residential units across 6 floors.
The building is in NYC community district 314, council district 40, zoning district R7A, on a 27,000-square-foot lot with a building footprint of 103,494 square feet.
The current registered owner of record per NYC PLUTO is DITMAS FLATS 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 OfficerYECHIEL WEINBERGER
- Corporate OwnerDITMAS FLATS LLC
Most recent deed
Activity timeline
Recent ACRIS documents (last 5)
Building stats
- Zoning:
- R7A
- Lot size:
- 27,000 sqft
- Building area:
- 103,494 sqft
- Floors:
- 6
- Assessed value:
- $3.2M
- Community district:
- 314
- Council district:
- 40
HPD violations
Recent HPD violation details
- Class CInspected Apr 22, 2026§ 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…
- Class CInspected Apr 15, 2026HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 4D, 4th STORY, 4th APARTMENT FR…
- Class CInspected Apr 15, 2026HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 5K, 5th STORY, 1st APARTMENT FROM…
- Class CInspected Apr 15, 2026HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 5K, 5th STORY, 1st APARTMENT FR…
- Class CInspected Apr 15, 2026§ 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 520 EAST 21 STREET
Who owns 520 EAST 21 STREET?
The current registered owner of record for 520 EAST 21 STREET per NYC PLUTO is DITMAS FLATS LLC. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 520 EAST 21 STREET last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 520 EAST 21 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 520 EAST 21 STREET have?
No open HPD housing-maintenance code violations are on record for 520 EAST 21 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 520 EAST 21 STREET?
NYC Department of Finance assesses 520 EAST 21 STREET at $3.24M 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 520 EAST 21 STREET and what does that mean?
520 EAST 21 STREET is NYC building class D1 — Elevator, semi-fireproof. A semi-fireproof elevator apartment building. 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.