621 ST MARKS AVENUE
621 ST MARKS AVENUE is a Class S4 (walk-up + store) building in Brooklyn (BBL 3012190079) built in 1931, with 5 residential units across 3 floors.
The building is in NYC community district 308, council district 36, zoning district R6A, on a 2,000-square-foot lot with a building footprint of 3,600 square feet.
The current registered owner of record per NYC PLUTO is MULLINGS, CONWAY A.
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 17, 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
- Site ManagerCONWAY MULLINGS
Most recent deed
Recent ACRIS documents (last 5)
Building stats
- Zoning:
- R6A
- Lot size:
- 2,000 sqft
- Building area:
- 3,600 sqft
- Floors:
- 3
- Assessed value:
- $447K
- Community district:
- 308
- Council district:
- 36
HPD violations
Recent HPD violation details
- Class IInspected Nov 19, 2025§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 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 AInspected Mar 27, 2023(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 Mar 2, 2022(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 Apr 13, 2021(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…
Recent ACRIS activity
Frequently asked questions about 621 ST MARKS AVENUE
Who owns 621 ST MARKS AVENUE?
The current registered owner of record for 621 ST MARKS AVENUE per NYC PLUTO is MULLINGS, CONWAY A. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 621 ST MARKS AVENUE last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 621 ST MARKS AVENUE 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 621 ST MARKS AVENUE have?
No open HPD housing-maintenance code violations are on record for 621 ST MARKS AVENUE as of May 17, 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 621 ST MARKS AVENUE?
NYC Department of Finance assesses 621 ST MARKS AVENUE at $447K 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 621 ST MARKS AVENUE and what does that mean?
621 ST MARKS AVENUE is NYC building class S4 — Walk-up + store. A walk-up apartment with one or more store 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.