420 EAST 21 STREET
420 EAST 21 STREET is a Class C1 (walk-up, over six families) building in Brooklyn (BBL 3051510021) built in 1924, with 32 residential units across 4 floors.
The building is in NYC community district 314, council district 40, zoning district R6A, on a 10,950-square-foot lot with a building footprint of 26,010 square feet.
The current registered owner of record per NYC PLUTO is 402 CORTELYOU ROAD 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 OfficerCELESTE LAMARCHE
- Corporate Owner402 CORTLEYOU ROAD LLC
- Managing AgentISMAEL RIOJA
Most recent deed
Recent ACRIS documents (last 5)
Building stats
- Zoning:
- R6A
- Lot size:
- 10,950 sqft
- Building area:
- 26,010 sqft
- Floors:
- 4
- Assessed value:
- $1.1M
- Community district:
- 314
- Council district:
- 40
HPD violations
Recent HPD violation details
- Class CInspected Jan 28, 2026§ 27-2031 ADM CODE PROVIDE HOT WATER AT ALL HOT WATER FIXTURES IN THE 3rd ROOM FROM NORTH LOCATED AT APT 204, 2nd STORY, 1st APARTMENT FROM…
- Class CInspected Nov 12, 2025§ 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 Aug 29, 2025HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 103, 1st STORY, 1st APARTMENT F…
- Class BInspected Aug 29, 2025§ 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE BASE CABINET AT SOUTH WALL IN THE KITCHEN LOCATED AT APT 103, 1st STORY, 1…
- Class AInspected Aug 29, 2025§ 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT ALL WALLS AND CEILING IN THE ENTIRE APARTMENT LOCAT…
Recent ACRIS activity
Frequently asked questions about 420 EAST 21 STREET
Who owns 420 EAST 21 STREET?
The current registered owner of record for 420 EAST 21 STREET per NYC PLUTO is 402 CORTELYOU ROAD LLC. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 420 EAST 21 STREET last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 420 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 420 EAST 21 STREET have?
No open HPD housing-maintenance code violations are on record for 420 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 420 EAST 21 STREET?
NYC Department of Finance assesses 420 EAST 21 STREET at $1.13M 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 420 EAST 21 STREET and what does that mean?
420 EAST 21 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.