711 recorded events, 1969–2026, from 17 city data systems. The city's paper trail here is mostly 246 ACRIS deeds & mortgages, 176 311 service requests, 71 DOF property sales.
Full record, year by year Support this site
The city's published records show little recorded distress here in the last three years. Less recorded distress than 66% of 100+-unit residential buildings citywide. The citywide median for 100+-unit residential buildings is 3.7 penalty points per 10 units; this building carries 1.6. In ZIP 10011, 68% of residential buildings hold an A and 5% grade D or F. How grades work
Among 4,677 100+-unit residential buildings citywide · left is less recorded distress, right is more
No current HPD flags in the latest weekly snapshot: no open violations, no pending litigation, no active vacate orders, and not in the Alternative Enforcement Program.
No heat or hot-water complaints in the last three years.
No bedbug-infested units reported in the last three years of filings.
18 service requests in the last three years. Most common: Noise (10) · Air Quality (3) · Hazardous Materials (1) · DOOR/WINDOW (1) · Missed Collection (1) · Homeless Person Assistance (1).
$1,616,153 in permitted construction work filed since 2016 (15 filings with a declared cost) — a rough measure of how actively the owner maintains the building. Permit costs cover filed construction work only — they do not capture routine maintenance or repairs done without a permit.
| No | Built before 1974 (2003) |
| Yes | Six or more residential units (107) |
| No | 421-a / J-51 tax benefit on the current tax roll |
1 of 3 signals present. Only a partial profile — stabilization is possible but less likely. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).
| Registered owner(s) | 520 West 23rd Street Corporation |
| Head officer | Michele Markowitz |
| Managing agent | AKAM ASSOCIATES, INC. |
| Last registered | 2025-10-31 |
as filed by the owner in the building's HPD registration
| Tax year | City market value | Assessed value |
|---|---|---|
| 2025 | $39,602,000 | $17,820,900 |
| 2026 | $34,707,000 | $15,618,150 |
| 2027 | $40,247,000 | $18,111,150 |
The city's market estimate has risen 2% between tax years 2025 and 2027.
For property tax, the Department of Finance values this co-op as if it were a rental building. Its 2022 estimate: gross income $5,806,319 a year ($60.70 per sq ft), operating expenses $1,440,579 ($15.06 per sq ft), net operating income $4,365,740. These are the city's estimates from comparable rentals, not the building's actual budget, rents or maintenance charges.
| Energy grade (LL33) | C — ENERGY STAR score 59/100 (2022 disclosure cycle) |
| Heating fuel | NO2FUEL |
| Facade (Local Law 11) | SAFE (cycle 10) |
In the FEMA 1%-annual-chance floodplain (2015 preliminary flood maps) — lenders typically require flood insurance here.
Hurricane evacuation zone 1 of 6 — zone 1 evacuates first.
In the city's stormwater flood map only under the extreme-storm scenario (3.66 in/hr cloudburst with 2080 sea levels) — an Ida-scale event.
No street-flooding or sewer-backup complaints on record at this address.
Sources: FEMA flood maps (coastal), NYC DEP Stormwater Flood Maps (cloudburst), NYC hurricane evacuation zones, and 311 records for this address.
| Subway | 23 St — C E · 0.4 mi straight-line (about a 10-minute walk) · station accessibility: none 14 St — A C E L · 0.5 mi straight-line (about a 13-minute walk) · station accessibility: full |
| Bus | Nearest boarding stop: W 23 St / 10 Av — M23-SBS · 200 ft · Select Bus Service |
| Citi Bike | W 22 St & 10 Ave · 350 ft · station location as of 2026-09-23; live availability |
| School zones (2024–25 map) | Elementary: P.S. 011: The Sarah J. Garnet Elementary School Middle: M.S. 297. Confirm with the DOE's school search. |
Distances are straight-line, not walking routes. Transit locations from the MTA and Citi Bike, bike facilities from NYC DOT, school zones from the DOE's 2024–25 maps.
520 West 23 Street
| Heat or hot water | Heat or hot water |
| Apartment maintenance | Apartment maintenance |
| Bed bugs | Bed bugs |
| Residential pests | Residential pests |
| Rats or mice | Rats or mice |
| Anything else | Anything else |
18 311 service requests from this address in the last three years.
311 will ask for the address, the apartment if the problem is inside, and what's wrong. Contact details are optional for most complaints; food-poisoning reports can be anonymous. Complaints appear in the city's public 311 data, usually within a day or two, and then in the Live from 311 box on this page.
Managed by AKAM ASSOCIATES, INC. — 372 buildings, 55,744 units. Grades across the portfolio: A328 · B33 · C5. See the whole portfolio
showing 60 of 372 buildings
Most recent mortgage recorded against this lot: $4,500,000 on 2003-09-08 (lender: Principal Life Insurance Company). Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.
| Date | Record | Amount | Per res. unit |
|---|---|---|---|
| 2026-04-07 | RPTT&RET $1,225,000 — from RYAN, DENISE ANNE to FLEMING, MARK C.; RENTON, RACHEL L. | $1,225,000 | |
| 2026-04-02 | Sold for $1,225,000 | $1,225,000 | $11,449 |
| 2025-06-20 | Agreement $5,762,501 — from OLD POST MANDE 23RD STREET LLC; KENT HOME MANDE 23RD STREET LLC; MANDELBAUM 23RD STREET, L to PRINCIPAL LIFE INSURANCE COMPANY | $5,762,501 | |
| 2025-05-12 | RPTT&RET $695,000 — from THE PAULA L. LIANG LIVING TRUST; PAULA L. LIANG, AS TRUSTEE; JAMES L. LIANG, AS TRUSTEE to WON, ALEX | $695,000 | |
| 2025-04-21 | Sold for $695,000 | $695,000 | $6,495 |
| 2025-04-01 | RPTT&RET $1,550,000 — from LINN, CHRISTOPHER K; MONTALVO, JOSE D to ALYA INTERNATIONAL INC. | $1,550,000 | |
| 2025-03-24 | Sold for $1,550,000 | $1,550,000 | $14,486 |
| 2025-03-19 | RPTT&RET $720,000 — from KINNELL, GUY to LIU, HAOCHEN | $720,000 | |
| 2025-03-11 | Sold for $720,000 | $720,000 | $6,729 |
| 2024-12-16 | RPTT&RET $785,000 — from WAKE SURFING 1, LLC to THE HOUSING LLC | $785,000 | |
| 2024-12-09 | Sold for $785,000 | $785,000 | $7,336 |
| 2024-11-14 | RPTT&RET $1,700,000 — from GUZZARDO, BERNADETTE to NAZARIO, BRUNILDA; MARTORANA, CLAIRE | $1,700,000 | |
| 2024-11-08 | Sold for $1,700,000 | $1,700,000 | $15,888 |
| 2024-07-23 | RPTT&RET $1,073,000 — from THOMPSON, LESLEY; THOMPSON, MARC to LI, JEFFREY | $1,073,000 | |
| 2024-07-18 | Sold for $1,073,000 | $1,073,000 | $10,028 |
| Year | Construction | Enforcement | Housing & tenants | Ownership & money | Health & systems | Total |
|---|---|---|---|---|---|---|
| 2017 | 17 | 8 | 13 | 15 | 3 | 56 |
| 2018 | 11 | 5 | 20 | 9 | 4 | 49 |
| 2019 | 0 | 8 | 16 | 12 | 4 | 40 |
| 2020 | 0 | 0 | 12 | 0 | 2 | 14 |
| 2021 | 1 | 1 | 18 | 24 | 3 | 47 |
| 2022 | 3 | 2 | 15 | 32 | 4 | 56 |
| 2023 | 0 | 1 | 20 | 15 | 2 | 38 |
| 2024 | 0 | 0 | 16 | 8 | 3 | 27 |
| 2025 | 0 | 0 | 4 | 9 | 3 | 16 |
| 2026 | 0 | 0 | 0 | 4 | 4 | 8 |
Every one of the 711 recorded events, 1969–2026, is laid out year by year in the full report (print-ready).
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