363 SUMPTER STREET
363 SUMPTER STREET is a Class C2 (walk-up, five to six) building in Brooklyn (BBL 3015220064) built in 1908, with 6 residential units across 3 floors.
The building is in NYC community district 316, council district 37, zoning district R6, on a 2,500-square-foot lot with a building footprint of 7,200 square feet.
The current registered owner of record per NYC PLUTO is KLANSTUY REALTY LLC, 25%.
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 OfficerMARTIN KIRZNER
- Corporate OwnerFSG REALTY HOLDINGS LLC
- Managing AgentBEN SCHWADEL
- Site ManagerJUNIOR JOHNSON
Most recent deed
Recent ACRIS documents (last 2)
Building stats
- Zoning:
- R6
- Lot size:
- 2,500 sqft
- Building area:
- 7,200 sqft
- Floors:
- 3
- Assessed value:
- $605K
- Community district:
- 316
- Council district:
- 37
HPD violations
Recent HPD violation details
- Class BInspected May 25, 2025§ 27-2005 ADM CODE FIRE ESCAPE DEFECTIVE. ADJUST THE DROPLADDER SO THAT IT WILL SLIDE EASILY IN THE GUIDE RODS AT NORTH YARD AT FIRE ESCAPE
- Class BInspected Apr 10, 2025§ 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR MISSING IN THE ENTIRE APARTMENT LOCATED AT APT 3A, 3rd STORY, 1st APARTMENT FROM WES…
- Class BInspected Apr 10, 2025§ 27-2046.1 HMC: REPAIR OR REPLACE THE CARBON MONOXIDE DETECTING DEVICE(S). MISSING IN THE ENTIRE APARTMENT LOCATED AT APT 3A, 3rd STORY, 1s…
- Class CInspected Mar 6, 2025§ 27-2031 ADM CODE PROVIDE HOT WATER AT ALL HOT WATER FIXTURES IN THE 1st ROOM FROM NORTH LOCATED AT APT 3A, 3rd STORY, 1st APARTMENT FROM W…
- Class CInspected Mar 6, 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…
Recent ACRIS activity
Frequently asked questions about 363 SUMPTER STREET
Who owns 363 SUMPTER STREET?
The current registered owner of record for 363 SUMPTER STREET per NYC PLUTO is KLANSTUY REALTY LLC, 25%. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 363 SUMPTER STREET last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 363 SUMPTER 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 363 SUMPTER STREET have?
No open HPD housing-maintenance code violations are on record for 363 SUMPTER 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 363 SUMPTER STREET?
NYC Department of Finance assesses 363 SUMPTER STREET at $605K 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 363 SUMPTER STREET and what does that mean?
363 SUMPTER 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.