18 KOSCIUSZKO STREET
18 KOSCIUSZKO STREET is a Class C0 (walk-up, 3+ families) building in Brooklyn (BBL 3017830015) built in 1899, with 3 residential units across 3 floors.
The building is in NYC community district 303, council district 36, zoning district R6B, on a 1,717-square-foot lot with a building footprint of 2,832 square feet.
The current registered owner of record per NYC PLUTO is RF KOS HOLDING 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 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 OfficerJOE FRIED
- Corporate OwnerRF KOS HOLDING LLC
- Managing AgentJOEL FRIED
Most recent deed
Recent ACRIS documents (last 5)
Building stats
- Zoning:
- R6B
- Lot size:
- 1,717 sqft
- Building area:
- 2,832 sqft
- Floors:
- 3
- Assessed value:
- $78K
- Community district:
- 303
- Council district:
- 36
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 CInspected Feb 4, 2026HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF MICE IN THE ENTIRE APARTMENT LOCATED AT APT 3, 3rd STORY, 1st APARTMENT FROM N…
- Class BInspected Feb 4, 2026§ 27-2005, 2007 ADM CODE REMOVE ALL ENCUMBRANCES CONSISTING OF HOUSEHOLD ITEM MULTIPLE BICYCLE AT PUBLIC HALL, 1st STORY
- Class BInspected Feb 4, 2026§ 27-2005, 2007 ADM CODE REMOVE ALL ENCUMBRANCES CONSISTING OF HOUSEHOLD ITEM AT PUBLIC HALL, 3rd STORY
- Class CInspected Feb 4, 2026§ 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 18 KOSCIUSZKO STREET
Who owns 18 KOSCIUSZKO STREET?
The current registered owner of record for 18 KOSCIUSZKO STREET per NYC PLUTO is RF KOS HOLDING LLC. MetroDeeds shows no confirmed ACRIS deed transfer for this BBL in the last 5 years of recorded NYC public-records data.
When was 18 KOSCIUSZKO STREET last sold?
MetroDeeds shows no confirmed ACRIS deed transfer for 18 KOSCIUSZKO 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 18 KOSCIUSZKO STREET have?
No open HPD housing-maintenance code violations are on record for 18 KOSCIUSZKO 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 18 KOSCIUSZKO STREET?
NYC Department of Finance assesses 18 KOSCIUSZKO STREET at $78K 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 18 KOSCIUSZKO STREET and what does that mean?
18 KOSCIUSZKO 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.