81 MONITOR STREET
81 MONITOR STREET is a Class C4 (walk-up, three families) building in Brooklyn (BBL 3027040041) built in 1928, with 8 residential units across 4 floors.
The building is in NYC community district 301, council district 33, zoning district R6B, on a 2,850-square-foot lot with a building footprint of 7,638 square feet.
The current registered owner of record per NYC PLUTO is HANSEN, RITA L.
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 OfficerRONALD HANSEN
- Corporate OwnerHANSEN FAMILY TRUST
- Managing AgentDHCR EXPERT, INC.
- Site ManagerBETTI ALTIERI
Most recent deed
Building stats
- Zoning:
- R6B
- Lot size:
- 2,850 sqft
- Building area:
- 7,638 sqft
- Floors:
- 4
- Assessed value:
- $1.2M
- Community district:
- 301
- Council district:
- 33
HPD violations
Recent HPD violation details
- Class AInspected May 5, 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 20, 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 Apr 11, 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 IInspected Nov 21, 2023§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…
Frequently asked questions about 81 MONITOR STREET
Who owns 81 MONITOR STREET?
The current registered owner of record for 81 MONITOR STREET per NYC PLUTO is HANSEN, RITA L. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 81 MONITOR STREET last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 81 MONITOR 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 81 MONITOR STREET have?
No open HPD housing-maintenance code violations are on record for 81 MONITOR 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 81 MONITOR STREET?
NYC Department of Finance assesses 81 MONITOR STREET at $1.16M 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 81 MONITOR STREET and what does that mean?
81 MONITOR STREET is NYC building class C4 — Walk-up, three families. A 3-to-6-story walk-up apartment building with 3 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.