The city's published records show little recorded distress here in the last three years. Less recorded distress than 100% 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 0. In ZIP 10023, 77% of residential buildings hold an A and
3% 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
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
8 service requests in the last three years. Most common: Noise (6) · Residential Disposal Complaint (1) · New Tree Request (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 (1887)
Yes
Six or more residential units (10)
No
421-a / J-51 tax benefit on the current tax roll
2 of 3 signals present. This is the classic profile of a rent-stabilized building (pre-1974, 6+ units) — many units in such buildings remain stabilized. 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)
40 WEST 71ST ST CORP
Head officer
WILLIAM KORCHAK
Managing agent
TRI-STAR EQUITIES
Last registered
2025-10-11
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
$3,701,000
$1,665,450
2026
$4,441,000
$1,998,450
2027
$4,861,000
$2,187,450
The city's market estimate has risen
31% between tax years 2025 and 2027.
Building systems
Heating fuel
NATURALGAS
Flood exposure
Not in the FEMA 1%-annual-chance floodplain (2015 preliminary maps).
Not in a hurricane evacuation zone.
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
72 St — B C · 500 ft straight-line (about a 2-minute walk) · station accessibility: none 66 St-Lincoln Center — 1 · 0.3 mi straight-line (about a 7-minute walk) · station accessibility: full
Bus
Nearest boarding stop: Columbus Av / W 72 St — M7 M11 · 500 ft
Citi Bike
Columbus Ave & W 72 St · 450 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.
8 311 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: $498,000 on
2022-08-03 (lender: Jp Morgan Chase Manhatten Bank NA). Face amount at recording — it may have since been paid
down, refinanced or satisfied. View the recorded
document.
Date
Record
Amount
Per res. unit
2022-08-03
Mortgage $498,000 — from 40 WEST 71ST STREET CORP. to JP MORGAN CHASE MANHATTEN BANK NA
$498,000
Ten-year activity
1050
2017
2018
2019
2020
2021
2022
2023
8
2024
2025
2026
EnforcementHousing & tenantsOwnership & moneyHealth & systems
Show as table
Year
Enforcement
Housing & tenants
Ownership & money
Health & systems
Total
2017
0
0
0
3
3
2018
0
3
0
2
5
2019
1
2
0
2
5
2020
0
1
0
2
3
2021
0
3
0
1
4
2022
0
3
1
2
6
2023
0
1
0
2
3
2024
0
5
0
3
8
2025
0
6
0
2
8
2026
0
0
0
0
0
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2021-12-09311: Lead — Lead Kit Request (Residential) (L10)
2021-04-07Boiler inspection
2021-01-09311: Request Large Bulky Item Collection — Request Large Bulky Item Collection
2020
2020-12-30Bedbug filing: 0 infested units
2020-07-16Boiler inspection
2020-04-08Boiler inspection — defects found
2019
2019-12-11Bedbug filing: 0 infested units
2019-04-26Rodent inspection: Passed
2019-04-22FDNY inspection (RISK)
2019-03-22Bedbug filing: 0 infested units
2019-02-22Boiler inspection
2018
2018-10-10HPD 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
2018-09-17Rodent inspection: Passed
2018-08-21311: GENERAL — COOKING GAS
2018-08-21Tenant complaint: GENERAL — COOKING GAS
2018-04-03Boiler inspection
2017
2017-11-28Rodent inspection: Passed
2017-04-12Rodent inspection: Failed for Rat Activity and Other Reason
2017-02-22Rodent inspection: Failed for Rat Activity
2016
2016-05-30311: Dead/Dying Tree — Planted More Than 2 Years Ago
2016-03-24Rodent inspection: Passed
2015
2015-11-01311: PLUMBING — WATER SUPPLY
2015-11-01Tenant complaint: PLUMBING — WATER SUPPLY
2015-09-12311: Noise — Noise: Construction Before/After Hours (NM1)
2015-06-12Rodent inspection: Passed
2014
2014-05-21Rodent inspection: Passed
2014-05-13Permit EQ — ISSUED
2014-05-08Job filed: PROPOSED INSTALLATION OF HEAVY DUTY SIDEWALK SHED FILED FOR REMEDIAL REPAIRS AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION
2013
2013-06-26Rodent inspection: Passed
2013-05-18311: Street Condition — Plate Condition - Noisy
2013-05-18311: Street Condition — Plate Condition - Noisy
2013-03-01DOB violation LBLVIO: VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2011 INSPECTION REPORT
2012
2012-04-06Rodent inspection: Passed
2011
2011-09-28DOB complaint, category ?
2011-09-22Rodent inspection: Passed
2011-09-06Permit EQ — ISSUED
2011-08-30Job filed: PROPOSED INSTALLATION OF HEAVY DUTY SIDEWALK SHED FILED FOR REMEDIAL REPAIRS AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION
2010
2010-09-07Rodent inspection: Passed
2010-03-29311: HEATING — HEAT
2010-03-29Tenant complaint: HEATING — HEAT RELATED
2010-02-05311: HEATING — HEAT
2010-02-05Tenant complaint: HEATING — HEAT RELATED
2009
2009-02-25Tenant complaint: HEATING — HEAT RELATED
2007
2007-10-10Tenant complaint: PLUMBING — BASIN/SINK
2007-10-10Tenant complaint: NONCONST — VERMIN
2007-10-10Tenant complaint: NONCONST — VERMIN
2004
2004-12-11DOB complaint, category ?
1999
1999-03-16DOB violation LL6291:
1994
1994-06-10Deed — from KORCHAK, MARION; STEGUN, ALBERT A.; KORCHAK, WILLIAM to 40 WEST 71ST STREETCORP
1990
1990-05-29SAGE — from LANDMARKS PRSVN COMMSN
1979
1979-09-26REL — from FIRST FDRL S/L ASSCNY to STEGUN, BERTHA; KORCHAK, WILLIAM ETAL
1979-05-25Deed — from KOREBAK, MARION EX; STEGUM, ALBERT EX; STEGUN, MICHAEL DECDEX to KORCHAK, MARION; STEGUM, ALBERT
1967
1967-08-21Mortgage — from KORCHAK, WILLIAM; STEGUN, BERTHA; STEGUN, MICHAEL; STEGUN, ALBERT A to FIRST FED S/L ASSN NY