5817 4 AVENUE
5817 4 AVENUE is a Class S9 (misc mixed-use) building in Brooklyn (BBL 3008550003) built in 1931, with 6 residential units across 3 floors.
The building is in NYC community district 307, council district 38, zoning district R7A, on a 2,000-square-foot lot with a building footprint of 4,410 square feet.
The current registered owner of record per NYC PLUTO is GREAT MOUNTAIN REALTY INC..
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 OfficerXU DONG
- Corporate OwnerGREAT MOUNTAIN REALTY INC
- Site ManagerMICHAEL DONG
Most recent deed
Recent ACRIS documents (last 4)
Building stats
- Zoning:
- R7A
- Lot size:
- 2,000 sqft
- Building area:
- 4,410 sqft
- Floors:
- 3
- Assessed value:
- $446K
- Community district:
- 307
- Council district:
- 38
HPD violations
Recent HPD violation details
- Class AInspected Apr 3, 2024(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 CInspected Mar 20, 2024§ 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 Mar 20, 2024§ 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 BInspected Dec 2, 2023§ 27-2045 ADM CODE REPAIR OR REPLACE THE SMOKE DETECTOR DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM S…
- Class CInspected Dec 2, 2023§ 27-2031 ADM CODE PROVIDE HOT WATER AT ALL HOT WATER FIXTURES IN THE ENTIRE APARTMENT LOCATED AT APT 3R, 3rd STORY, 1st APARTMENT FROM SOUT…
Recent ACRIS activity
Frequently asked questions about 5817 4 AVENUE
Who owns 5817 4 AVENUE?
The current registered owner of record for 5817 4 AVENUE per NYC PLUTO is GREAT MOUNTAIN REALTY INC.. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 5817 4 AVENUE last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 5817 4 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 5817 4 AVENUE have?
No open HPD housing-maintenance code violations are on record for 5817 4 AVENUE 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 5817 4 AVENUE?
NYC Department of Finance assesses 5817 4 AVENUE at $446K 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 5817 4 AVENUE and what does that mean?
5817 4 AVENUE is NYC building class S9 — Misc mixed-use. Miscellaneous mixed residential and commercial building. 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.