111 BAY 40 STREET
111 BAY 40 STREET is a Class C0 (walk-up, 3+ families) building in Brooklyn (BBL 3068800033) built in 1930, with 3 residential units across 2 floors.
The building is in NYC community district 311, council district 43, zoning district R5, on a 1,933-square-foot lot with a building footprint of 3,425 square feet.
The current registered owner of record per NYC PLUTO is KO, YUN YIN.
The most recent ACRIS deed transfer for this BBL was recorded on July 29, 2022 when KO, MAN WONG conveyed the property to KO, YUN YIN for $980K. The transaction was recorded as cash (no paired mortgage instrument).
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 OfficerANNA RUSSO
- Site ManagerYUNYIN KO
Most recent deed
Activity timeline
Recent ACRIS documents (last 2)
Building stats
- Zoning:
- R5
- Lot size:
- 1,933 sqft
- Building area:
- 3,425 sqft
- Floors:
- 2
- Assessed value:
- $84K
- Community district:
- 311
- Council district:
- 43
HPD violations
Recent HPD violation details
- Class CInspected Oct 17, 2022§ 27-2005, 27-2007, 27-2041.1 HMC: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE AT ENTRANCE LOCATED AT BSMT-APT 1fl…
- Class AInspected Oct 17, 2022§ 27-2046.1 HMC: POST A PROPER NOTICE OF CARBON MONOXIDE DETECTING DEVICE REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, IN A COMMON…
- Class AInspected Oct 17, 2022§ 27-2005 HMC: POST, IN A FORM APPROVED BY THE COMMISSIONER, AND MAINTAIN A NOTICE IN A COMMON AREA OF THE BUILDING REGARDING THE PROCEDURES…
- Class CInspected Oct 17, 2022§ 27-2005, 27-2007, 27-2041.1 HMC: REPLACE OR REPAIR THE SELF-CLOSING DOORS THAT IS MISSING OR DEFECTIVE AT BUILDING ENTRANCE , 1st STORY
- Class BInspected Oct 17, 2022§ 27-2005, 2007 ADM CODE REMOVE ALL ENCUMBRANCES CONSISTING OF HOUSEHOLD ITEMS AT PUBLIC HALL, 1st STORY
Recent ACRIS activity
Other buildings in this portfolio
- 210 BAY 40 STREET6 violations
Frequently asked questions about 111 BAY 40 STREET
Who owns 111 BAY 40 STREET?
The current registered owner of record for 111 BAY 40 STREET per NYC PLUTO is KO, YUN YIN. The most recent ACRIS deed transfer for this BBL was recorded on July 29, 2022 when the property was conveyed to KO, YUN YIN. PLUTO ownership is refreshed monthly by NYC Department of Finance; the registered owner may not reflect transactions recorded within the last 30 days.
When was 111 BAY 40 STREET last sold?
The most recent ACRIS deed transfer for 111 BAY 40 STREET was recorded on July 29, 2022, when KO, MAN WONG conveyed the property to KO, YUN YIN for $980K. The transaction was recorded as cash (no paired mortgage instrument).
How many HPD violations does 111 BAY 40 STREET have?
No open HPD housing-maintenance code violations are on record for 111 BAY 40 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 111 BAY 40 STREET?
NYC Department of Finance assesses 111 BAY 40 STREET at $84K 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 111 BAY 40 STREET and what does that mean?
111 BAY 40 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.