Building Biography

The MapLandlordsNeighborhoodsZIP CodesGradesThe Mice MapAboutWhat's new

423 Lenox Avenue

313Records
17City systems
1Open violations
40Penalty rate
Manhattan · ZIP 10037 · Neighborhood: Harlem (North)
Open in the map

313 recorded events, 1966–2026, from 17 city data systems. The city's paper trail here is mostly 105 311 service requests, 64 HPD complaints, 47 ACRIS deeds & mortgages.

BoroughManhattan 10037
Built1910
Floors5
Res. units9
ClassC7
Owner (PLUTO)ABJ SIERRA, LLC
BBL1019160030
BIN1058103

Full record, year by year   Support this site

GRADE B

A modest record — below the level that usually signals systemic problems. More recorded distress than 68% of 6-24-unit residential buildings citywide. The citywide median for 6-24-unit residential buildings is 16.3 penalty points per 10 units; this building carries 40. In ZIP 10037, 35% of residential buildings hold an A and 13% grade D or F. How grades work

this building
A
B
C

Among 46,798 6-24-unit residential buildings citywide · left is less recorded distress, right is more

Open with the city right now

Open HPD violations1 total — 0 class C (immediately hazardous), 1 class B, 0 class A. Oldest open since 2013-08-01.

status snapshot refreshed weekly from HPD records

Patterns

7 heat or hot-water complaints in the last three years (winter 2023–24: 2 · winter 2024–25: 5). Repeated winter clusters suggest a chronic heating problem.

2
’23–24
5
’24–25

No bedbug-infested units reported in the last three years of filings.

What 311 hears from this address

19 service requests in the last three years. Most common: Noise (15) · HEAT/HOT WATER (3) · Consumer Complaint (1).

Filed construction activity

No permitted work with a declared cost filed in the last decade. Permit costs cover filed construction work only — they do not capture routine maintenance or repairs done without a permit.

Rent-stabilization signals

YesBuilt before 1974 (1910)
YesSix or more residential units (9)
Yes421-a / J-51 tax benefit on the current tax roll

3 of 3 signals present. Buildings receiving 421-a or J-51 benefits are generally required to register their units as rent-stabilized for the duration of the benefit. The definitive answer for any unit: request its rent history from NYS Homes & Community Renewal (free, at hcr.ny.gov).

Registered with HPD — the names behind the building

Registered owner(s)ABJ SIERRA LLC
Head officerJOSEPH SOLEIMANI
Managing agentABJ SIERRA LLC
Last registered2025-10-15

as filed by the owner in the building's HPD registration

What the city thinks it's worth

Tax yearCity market valueAssessed value
2025$985,600 $443,520
2026$1,102,000 $495,900
2027$1,291,000 $580,950

The city's market estimate has risen 31% between tax years 2025 and 2027.

Tax exemptions on the roll: J51

Building systems

Heating fuelNATURALGAS

Flood exposure

Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).

Hurricane evacuation zone 6 of 6 — zone 1 evacuates first.

Not in the city's stormwater (cloudburst) flood maps under any modeled scenario.

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.

Getting around

Subway135 St — 2 3 · 900 ft straight-line (about a 5-minute walk) · station accessibility: full
BusNearest boarding stop: Malcolm X Blvd / W 132 St — M7 M102 · 100 ft
Citi BikeLenox Ave & W 130 St · 400 ft · station location as of 2026-09-23; live availability
School zones (2024–25 map)Elementary: P.S. 175 Henry H Garnet. 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.

Report a problem to 311

423 Lenox Avenue

Heat or hot waterHeat or hot water
Apartment maintenanceApartment maintenance
Bed bugsBed bugs
Residential pestsResidential pests
Rats or miceRats or mice
Anything elseAnything else

19 311 service requests from this address in the last three years — 3 of them about heat or hot water.

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.

The landlord's report card

Managed by ABJ SIERRA LLC — 4 buildings, 57 units. Grades across the portfolio: B2 · C2. See the whole portfolio

BuildingBoroughUnitsGrade
439 Lenox Avenue MN22 C
140 West 133 Street MN16 C
134 West 133 Street MN10 B
423 Lenox Avenue MN9 B

Sales, deeds & mortgages

Most recent mortgage recorded against this lot: $601,436 on 2022-10-26 (lender: JPMorgan Chase Bank NA), covering 5 lots — the amount covers all of them. Face amount at recording — it may have since been paid down, refinanced or satisfied. View the recorded document.

DateRecordAmountPer res. unit
2022-10-26Agreement $6,500,000 — from ABJ SIERRA, LLC to JPMORGAN CHASE BANK NA $6,500,000
2022-10-26Mortgage $601,436 — from ABJ SIERRA, LLC to JPMORGAN CHASE BANK NA $601,436
2017-08-03AL&R $6,540,000 — from ABJ SIERRA, LLC to INVESTORS BANK $6,540,000
2017-08-03Mortgage $2,890,651 — from ABJ SIERRA, LLC to INVESTORS BANK $2,890,651
2017-08-03Agreement $6,540,000 — from ABJ SIERRA, LLC to INVESTORS BANK $6,540,000
2013-08-21AL&R $3,935,000 — from ABJ SIERRA, LLC to INVESTORS BANK $3,935,000
2013-08-21Agreement $3,935,000 — from ABJ SIERRA, LLC to INVESTORS BANK $3,935,000
2013-08-21Mortgage $2,190,706 — from ABJ SIERRA, LLC to INVESTORS BANK $2,190,706
2013-08-21Deed $5,250,000 — from NEW SIERRA LIMITED PARTNERSHIP to ABJ SIERRA, LLC $5,250,000
2005-02-09Agreement $2,000,000 — from NEW SIERRA LIMITED PARTNERSHIP to PW FUNDING INC. $2,000,000
2002-03-22Mortgage $3,700,000 — from NEW SIERRA LIMITED PARTNERSHIP to NEW YORK CITY HOUSING DEVELOPMENTCORPORA $3,700,000

Ten-year activity

100500
2017
68
2018
2019
2020
2021
2022
2023
2024
2025
2026
EnforcementHousing & tenantsOwnership & moneyHealth & systems
Show as table
YearEnforcementHousing & tenantsOwnership & moneyHealth & systemsTotal
2017045110
20181650268
201903036
202001023
202102024
20220106218
20230150318
20240101314
20250190322
202603025
This record is free. Keeping it free costs money.
Servers, data pipelines, weekends. Pay what you want — a dollar helps.
Chip in

The full timeline

Construction 16Enforcement 18Housing & tenants 201Ownership & money 47Health & systems 31

Every one of the 313 recorded events, 1966–2026, is laid out year by year in the full report (print-ready).

Explore: ZIP 10037 · Landlord rankings · How grades work · The map · The Mice Map