521 56 STREET
521 56 STREET is a Class C2 (walk-up, five to six) building in Brooklyn (BBL 3008320069) built in 1906, with 6 residential units across 3 floors.
The building is in NYC community district 307, council district 38, zoning district R6B, on a 3,013-square-foot lot with a building footprint of 3,960 square feet.
The current registered owner of record per NYC PLUTO is 521 OWNERS CORP.
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 OfficerKOSTAS TSICHLIS
- Corporate Owner521 OWNERS CORP
- Managing AgentKASTORION REALTY
- Site ManagerELIAS TSICHLIS
Most recent deed
Building stats
- Zoning:
- R6B
- Lot size:
- 3,013 sqft
- Building area:
- 3,960 sqft
- Floors:
- 3
- Assessed value:
- $341K
- Community district:
- 307
- Council district:
- 38
HPD violations
Recent HPD violation details
- Class AInspected Jun 6, 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 IInspected Nov 27, 2024§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE…
- Class BInspected Oct 21, 2024§ 27-2005, 2007 ADM CODE AND DEPT. RULES AND REGULATIONS. REMOVE THE ENCUMBRANCE OBSTRUCTING EGRESS FROM FIRE ESCAPES CONSISTING OF HOUSE HO…
- Class BInspected Jan 3, 2024§ 27-2005, 2007 ADM CODE AND DEPT. RULES AND REGULATIONS. REMOVE THE ENCUMBRANCE OBSTRUCTING EGRESS FROM FIRE ESCAPES ..FLOWER POTS AT 3RD S…
- Class AInspected Apr 24, 2023§ 53, 187, 231 M/D LAW AND DEPARTMENT RULES AND REGULATIONS. PROVIDE A SHOE PROPERLY SECURED TO BOTTOM OF STRING OF DROPLADDER AT FIRE ESCAP…
Frequently asked questions about 521 56 STREET
Who owns 521 56 STREET?
The current registered owner of record for 521 56 STREET per NYC PLUTO is 521 OWNERS CORP. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 521 56 STREET last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 521 56 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 521 56 STREET have?
No open HPD housing-maintenance code violations are on record for 521 56 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 521 56 STREET?
NYC Department of Finance assesses 521 56 STREET at $341K 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 521 56 STREET and what does that mean?
521 56 STREET is NYC building class C2 — Walk-up, five to six. A 3-to-6-story walk-up apartment building, 5-6 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.