520 WEST 23 STREET
520 WEST 23 STREET is a Class D4 (elevator coop, 6+ stories) building in Manhattan (BBL 1006940042) built in 2003, with 110 residential units across 15 floors.
The building is in NYC community district 104, council district 3, zoning district C6-3A, on a 12,125-square-foot lot with a building footprint of 95,656 square feet.
The current registered owner of record per NYC PLUTO is OLD POST MANDE 23RD STREET LLC.
The most recent ACRIS deed transfer for this BBL was recorded on December 29, 2021 when THE KIMMEL FAMILY 23RD STREET, LLC conveyed the property to OLD POST MANDE 23RD STREET LLC; KENT HOME MANDE 23RD STREET LLC for $26.75M. 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 OfficerMichele Markowitz
- Corporate Owner520 West 23rd Street Corporation
- Managing AgentAKAM ASSOCIATES, INC.
Most recent deed
Recent ACRIS documents (last 1)
Building stats
- Zoning:
- C6-3A
- Lot size:
- 12,125 sqft
- Building area:
- 95,656 sqft
- Floors:
- 15
- Assessed value:
- $18.1M
- Community district:
- 104
- Council district:
- 3
HPD violations
Recent HPD violation details
- Class CInspected Jul 1, 2024§ 27-2005, 2007 ADM CODE REMOVE DEVICE PREVENTING DOOR FROM BEING SELF-CLOSING KICK DOWN DOOR STOPPER AT SOUTH FIRE DOOR AT PUBLIC HALL, 1st…
- Class CInspected Jul 1, 2024§ 27-2005, 2007 ADM CODE REMOVE DEVICE PREVENTING DOOR FROM BEING SELF-CLOSING KICK DOWN STOPPER AT DOOR AT LAUNDRY ROOM, 1st STORY
- Class IInspected Nov 15, 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…
Recent ACRIS activity
Frequently asked questions about 520 WEST 23 STREET
Who owns 520 WEST 23 STREET?
The current registered owner of record for 520 WEST 23 STREET per NYC PLUTO is OLD POST MANDE 23RD STREET LLC. The most recent ACRIS deed transfer for this BBL was recorded on December 29, 2021 when the property was conveyed to OLD POST MANDE 23RD STREET LLC; KENT HOME MANDE 23RD STREET LLC. 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 520 WEST 23 STREET last sold?
The most recent ACRIS deed transfer for 520 WEST 23 STREET was recorded on December 29, 2021, when THE KIMMEL FAMILY 23RD STREET, LLC conveyed the property to OLD POST MANDE 23RD STREET LLC; KENT HOME MANDE 23RD STREET LLC for $26.75M. The transaction was recorded as cash (no paired mortgage instrument).
How many HPD violations does 520 WEST 23 STREET have?
No open HPD housing-maintenance code violations are on record for 520 WEST 23 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 520 WEST 23 STREET?
NYC Department of Finance assesses 520 WEST 23 STREET at $18.11M 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 520 WEST 23 STREET and what does that mean?
520 WEST 23 STREET is NYC building class D4 — Elevator coop, 6+ stories. A 6+ story elevator cooperative apartment 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.