306 HART STREET
306 HART STREET is a Class C0 (walk-up, 3+ families) building in Brooklyn (BBL 3015940018) built in 2003, with 3 residential units across 3 floors.
The building is in NYC community district 303, council district 36, zoning district R6B, on a 1,917-square-foot lot with a building footprint of 2,971 square feet.
The current registered owner of record per NYC PLUTO is MAUSKOPF, JOSEPH.
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
- Site ManagerJOSEPH MAUSKOPF
Most recent deed
Recent ACRIS documents (last 5)
Building stats
- Zoning:
- R6B
- Lot size:
- 1,917 sqft
- Building area:
- 2,971 sqft
- Floors:
- 3
- Assessed value:
- $80K
- Community district:
- 303
- Council district:
- 36
HPD violations
Recent HPD violation details
- Class AInspected May 8, 2026(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 18, 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 BInspected Jul 11, 2025§ 27-2046.1 HMC: REPAIR OR REPLACE THE CARBON MONOXIDE DETECTING DEVICE(S). DEFECTIVE IN THE ENTIRE APARTMENT LOCATED AT APT 2, 2nd STORY, 1…
- Class CInspected Jul 11, 2025§ 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE GLASS IN LOWER WINDOW SASH CAUSING CUT HAZZARD IN THE 3rd R…
- Class AInspected Jul 11, 2025§ 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE KITCHEN LOCATED AT APT 2…
Recent ACRIS activity
Other buildings in this portfolio
- 590 MARCY AVENUE55 violations
- 217 SPENCER STREET13 violations
Frequently asked questions about 306 HART STREET
Who owns 306 HART STREET?
The current registered owner of record for 306 HART STREET per NYC PLUTO is MAUSKOPF, JOSEPH. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 306 HART STREET last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 306 HART 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 306 HART STREET have?
No open HPD housing-maintenance code violations are on record for 306 HART 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 306 HART STREET?
NYC Department of Finance assesses 306 HART STREET at $80K 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 306 HART STREET and what does that mean?
306 HART STREET is NYC building class C0 — Walk-up, 3+ families. A 3-to-6-story walk-up apartment building (no elevator), 3 or more 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.