The city's published records show little recorded distress here in the last three years. More recorded distress than 77% of 1-5-unit residential buildings citywide. The citywide median for 1-5-unit residential buildings is 0 penalty
points per 10 units; this building carries 0.8. In ZIP 10011, 68% of residential buildings hold an A and
5% grade D or F.
How grades work
this building
A
C
Among 699,345 1-5-unit residential buildings citywide · left is less recorded distress, right is more
Open with the city right now
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.
Patterns
No heat or hot-water complaints in the last three years.
No bedbug-infested units reported in the last three years of filings.
What 311 hears from this address
9 service requests in the last three years. Most common: Missed Collection (3) · Illegal Parking (3) · Noise (1) · WATER LEAK (1) · For Hire Vehicle 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
Yes
Built before 1974 (1910)
No
Six or more residential units (5)
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 with HPD — the names behind the building
Registered owner(s)
143 WEST 21ST OWNERS CORP
Head officer
James boorstein
Managing agent
MARBROSE REALTY
Last registered
2025-07-08
as filed by the owner in the building's HPD registration
What the city thinks it's worth
Tax year
City market value
Assessed value
2025
$5,059,000
$2,276,550
2026
$4,047,000
$1,821,150
2027
$3,238,000
$1,457,100
The city's market estimate has fallen
36% between tax years 2025 and 2027.
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
Subway
23 St — 1 · 500 ft straight-line (about a 3-minute walk) · station accessibility: none 23 St — F M · 600 ft straight-line (about a 3-minute walk) · station accessibility: none
Bus
Nearest boarding stop: W 23 St / 7 Av — M23-SBS · 550 ft · Select Bus Service
Citi Bike
W 21 St & 6 Ave · 400 ft · station location as of 2026-09-23; live availability
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.
9 311 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.
Most recent mortgage recorded against this lot: $80,000 on
2002-08-02 (lender: Dime Savings Bank Ofwilliamsburgh). Face amount at recording — it may have since been paid
down, refinanced or satisfied. View the recorded
document.
Date
Record
Amount
Per res. unit
2015-11-04
RPTT $450,000 — from BOORSTEIN, JAMES A; CHANEY, MELISSA L to CHANEY, MELISSA L
$450,000
2002-08-02
Mortgage $80,000 — from 143 WEST 21ST OWNERSCORP to DIME SAVINGS BANK OFWILLIAMSBURGH
$80,000
1995-06-29
Mortgage $1,861 — from 143 WEST 21ST OWNERSCORP. to EMIGRANT FUNDING CORP
$1,861
1990-05-21
Mortgage $315,000 — from 143 W 21ST OWNERS CORP to CROSSLAND SAVINGS FSB
$315,000
1985-07-26
Mortgage $201,500 — from 143 W. 21 ST ONWERSCORP to JUDSHALL CORP.
$201,500
1985-07-26
Mortgage $73,500 — from 143 W.21ST OWNERS CORP to ISAW REALTY INC.
$73,500
Ten-year activity
20100
2017
2018
2019
2020
2021
2022
11
2023
2024
2025
2026
EnforcementHousing & tenantsHealth & systems
Show as table
Year
Enforcement
Housing & tenants
Health & systems
Total
2017
1
3
2
6
2018
0
3
1
4
2019
0
2
1
3
2020
0
2
0
2
2021
0
4
0
4
2022
0
3
0
3
2023
0
11
0
11
2024
0
3
1
4
2025
0
4
0
4
2026
0
4
1
5
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2022-11-02HPD class I: §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
2021
2021-12-01Bedbug filing: 0 infested units
2021-11-28311: Request Large Bulky Item Collection — Request Large Bulky Item Collection
2021-11-10311: Air Quality — Air: Odor/Fumes, Vehicle Idling (AD3)
2013-10-16Job filed: INSTALLATION OF A SCAFFOLD AS PER PLANS DURING FACADE REPAIRS. NO CHANGE IN USE, EGRESS OR OCCUPANCY. SCAFFOLD TO COMPLY WITH CHAPTER 33 OF NYC BUILID
2013-10-16Permit EQ — ISSUED
2013-09-25311: Non-Emergency Police Matter — Other (complaint details)
2013-07-29Permit EQ — ISSUED
2013-07-26Job filed: INSTALLATION OF PIPE SCAFFOLD AS PER PLAN. WORK SHALL COMPLY WITH 2008 BUILDING CODE CHAPTER 33. NO CHANGE IN USE, EGRESS OR OCCUPANCY
2013-07-26Job filed: INSTALLATION OF PIPE SCAFFOLD AS PER PLAN. WORK SHALL COMPLY WITH 2008 BUILDING CODE CHAPTER 33. NO CHANGE IN USE, EGRESS OR OCCUPANCY