621 MADISON STREET
621 MADISON STREET is a Class C1 (walk-up, over six families) building in Brooklyn (BBL 3016410175) built in 2022, with 7 residential units across 4 floors.
The building is in NYC community district 303, council district 36, zoning district R6B, on a 1,900-square-foot lot with a building footprint of 5,217 square feet.
The current registered owner of record per NYC PLUTO is 621 MADISON STREET QOZB, 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 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
- Head OfficerJonathan Kaye
- Corporate Owner621 Madison Street QOZB, LLC
Most recent deed
Recent ACRIS documents (last 3)
Building stats
- Zoning:
- R6B
- Lot size:
- 1,900 sqft
- Building area:
- 5,217 sqft
- Floors:
- 4
- Assessed value:
- $401K
- Community district:
- 303
- Council district:
- 36
HPD violations
Recent HPD violation details
Recent ACRIS activity
Frequently asked questions about 621 MADISON STREET
Who owns 621 MADISON STREET?
The current registered owner of record for 621 MADISON STREET per NYC PLUTO is 621 MADISON STREET QOZB, LLC. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 621 MADISON STREET last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 621 MADISON 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 621 MADISON STREET have?
No open HPD housing-maintenance code violations are on record for 621 MADISON STREET 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 MADISON STREET?
NYC Department of Finance assesses 621 MADISON STREET at $401K 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 MADISON STREET and what does that mean?
621 MADISON 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.