A sustained record of distress well beyond its peers. More recorded distress than 95% 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 42.5. In ZIP 11237, 39% of residential buildings hold an A and
15% 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.
$3,125 in enforcement penalties imposed (ECB/OATH) in the last three years.
What 311 hears from this address
37 service requests in the last three years. Most common: Encampment (15) · Real Time Enforcement (7) · Homeless Person Assistance (5) · Investigations and Discipline (IAD) (3) · Graffiti (2) · Vendor Enforcement (1).
Filed construction activity
$12,000 in permitted construction work filed since
2016 (3 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.
Rent-stabilization signals
Yes
Built before 1974 (1931)
No
Six or more residential units (4)
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)
336 KNICKERBOCKER REALTY LLC
Head officer
NICOLA RIZZO
Managing agent
NICOLA RIZZO
Last registered
2025-10-01
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
$1,093,000
$491,850
2026
$1,027,000
$462,150
2027
$1,202,000
$540,900
The city's market estimate has risen
10% between tax years 2025 and 2027.
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.
3 street-flooding or sewer-backup complaints at this address since
2016 (1 in the last three years).
Sources: FEMA flood maps (coastal), NYC DEP Stormwater Flood Maps
(cloudburst), NYC hurricane evacuation zones, and 311 records for this address.
Getting around
Subway
Knickerbocker Av — M · 0.2 mi straight-line (about a 6-minute walk) · station accessibility: none DeKalb Av — L · 0.3 mi straight-line (about a 7-minute walk) · station accessibility: none
Bus
Nearest boarding stop: De Kalb Av / Knickerbocker Av — B38 · under 50 ft
Citi Bike
Suydam St & Knickerbocker Ave · 500 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.
37 311 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.
Ten-year activity
50250
2017
2018
2019
2020
2021
2022
2023
36
2024
2025
2026
ConstructionEnforcementHousing & tenantsHealth & systems
Show as table
Year
Construction
Enforcement
Housing & tenants
Health & systems
Total
2017
0
0
0
4
4
2018
0
1
5
3
9
2019
0
3
24
3
30
2020
0
0
5
2
7
2021
0
0
5
2
7
2022
0
0
4
6
10
2023
0
9
15
3
27
2024
6
11
16
3
36
2025
0
0
11
4
15
2026
0
1
12
2
15
This record is free. Keeping it free costs money. Servers, data pipelines, weekends. Pay what you want — a dollar helps.
HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2026-04-19
311: Encampment — N/A
2026-04-17
311: Encampment — N/A
2026-04-16
Rodent inspection: Passed
2026-04-13
311: Encampment — N/A
2026-04-01
311: Noise - Street/Sidewalk — Loud Talking
2025-12-06
311: Encampment — N/A
2025-12-06
311: Encampment — N/A
2025-11-01
311: Encampment — N/A
2025-11-01
311: Encampment — N/A
2025-11-01
311: Encampment — N/A
2025-10-22
Rodent inspection: Passed
The full timeline
2026
2026-09-19311: Homeless Person Assistance — Non-Chronic
2026-08-01311: Homeless Person Assistance — Non-Chronic
2026-05-05HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2025-06-10HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2025-05-11311: Homeless Person Assistance — Non-Chronic
2025-04-30Restaurant inspection: TONY’S BY JOE & JOHN’S — grade A
2025-04-15Rodent inspection: Passed
2024
2024-12-03311: Encampment — N/A
2024-11-26311: Lead — Lead Kit Request (Residential) (L10)
2024-05-17Permit General Construction — Signed-off
2024-05-14Job filed: INSTALLATION OF TEMPORARY PIPE SCAFFOLD AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.$1,000
2024-05-05Bedbug filing: 0 infested units
2024-04-10HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2024-04-09311: Encampment — N/A
2024-04-04Rodent inspection: Passed
2024-03-08Job filed: APPLICATION FILE TO EXTERIOR FACADE REPAIR AS STEP CRACK, DETERIORATING BRICK REPAIR, WINDOW SILL REPAIR AS PER PLAN. REMOVE VIOLATION#39106039X. NO $10,000
2024-02-20ECB CLASS - 2 violation: OBSERVED AT ABOVE PREMISES IN CELLAR OF COMMERICAL STORE PLUMBING ACTIVITY OF IMPROPER FLUTE CONNECTION AND ALTER MANUFACTORING SP$625
2024-02-20Permit Sidewalk Shed — Signed-off
2024-02-20ECB CLASS - 2 violation: OBSERVED AT A MIXED USE BUILDING, GAS FIRE WATER HEATER INSTALLED ALSO WATER PIPING INSTALLE TO WATER HEATER WITH NO PERMIT ON DOB$1,250
2024-02-20Job filed: INSTALLATION OF TEMPORARY SIDEWALK SHED AS PER PLAN. NO CHANGE IN USE, EGRESS OR OCCUPANCY.$1,000
2024-02-19311: Investigations and Discipline (IAD) — Plumbing Work - Unlicensed/Illegal/Improper Work In Progress
2024-02-19311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2024-02-19311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2024-02-19DOB complaint, category ?
2024-02-19DOB complaint, category ?
2024-02-19DOB complaint, category ?
2024-02-16DOB violation IMEGNCY: INSTALL APPROXIMATELY 25 FEET SIDEWALK SHED/OVERHEAD PROTECTION AT EXP SOURE #1 AND 65 FEET SIDEWALK SHED/OVERHEAD PROTECTION AT EX
2024-02-14ECB CLASS - 1 violation: ATOI OBSERVED LARGE STEP CRACK ABOVE SECOND FLOOR LINTEL WITH BULGING DETERIORATING MASONRY BRICK AT EXP 2. DETERIORATED CORNICE W$1,250
2024-02-13311: Investigations and Discipline (IAD) — Investigative Inspection
2024-02-13311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2024-02-13311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2024-02-13311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2024-02-13DOB complaint, category ?
2024-02-13DOB complaint, category ?
2024-02-13DOB complaint, category ?
2024-02-13DOB complaint, category ?
2023
2023-12-26311: Investigations and Discipline (IAD) — Plumbing Work - Unlicensed/Illegal/Improper Work In Progress
2023-12-26311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2023-12-26311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2023-12-26DOB complaint, category ?
2023-12-26DOB complaint, category ?
2023-12-26DOB complaint, category ?
2023-10-18Rodent inspection: Passed
2023-09-05311: Traffic — Drag Racing
2023-08-25311: Traffic — Drag Racing
2023-08-02311: Food Establishment — Bare Hands in Contact w/ Food
2023-06-12Boiler inspection
2023-04-18311: Graffiti — Police Report Not Requested
2023-04-10Rodent inspection: Passed
2023-04-08311: Investigations and Discipline (IAD) — Plumbing Work - Unlicensed/Illegal/Improper Work In Progress
2023-04-08311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2023-04-08311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2023-04-08DOB complaint, category ?
2023-04-08DOB complaint, category ?
2023-04-08DOB complaint, category ?
2023-03-27311: Plumbing — Plumbing Work - Illegal/No Permit/Standpipe/Sprinkler
2023-03-27311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2023-03-27311: Real Time Enforcement — Work Without A Permit - Occupied Multiple Dwelling
2023-03-27DOB complaint, category ?
2023-03-27DOB complaint, category ?
2023-03-27DOB complaint, category ?
2023-03-23HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2022
2022-11-14Rodent inspection: Passed
2022-11-14HPD 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
2022-11-04Rodent inspection: Passed
2022-10-17Rodent inspection: Failed for Rat Activity
2022-10-16311: Rodent — Mouse Sighting
2022-10-12Rodent inspection: Failed for Rat Activity
2022-06-18Boiler inspection
2022-04-14Rodent inspection: Passed
2022-02-25HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2021-04-09HPD 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
2021-04-09HPD class A: (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPD
2020-04-06311: Bus Stop Shelter Placement — New Bus Stop Shelter Placement
2020-03-05311: Food Poisoning — 1 or 2
2020-01-26311: Request Large Bulky Item Collection — Request Large Bulky Item Collection
2019
2019-12-17311: Sewer — Street Flooding (SJ)
2019-12-10311: Street Condition — Pothole
2019-12-01311: Request Large Bulky Item Collection — Request Large Bulky Item Collection
2019-10-30HPD 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
2019-06-16311: General Construction/Plumbing — Building Permit - None
2019-06-16DOB complaint, category ?
2019-06-12311: Homeless Person Assistance
2019-06-11Boiler inspection
2019-05-30311: Graffiti — Graffiti
2019-05-15311: Water System — Hydrant Running (WC3)
2019-04-12Rodent inspection: Passed
2019-02-08311: Building/Use — No Certificate Of Occupancy/Illegal/Contrary To CO
2019-02-08DOB complaint, category ?
2019-02-07DOB complaint, category ?
2018
2018-10-30311: Homeless Person Assistance
2018-10-22Rodent inspection: Passed
2018-10-18HPD 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
2018-04-06DOB violation LBLVIO: VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2016 INSPECTION REPORT
2018-04-04Rodent inspection: Passed
2018-02-23Boiler inspection
2017
2017-12-21Boiler inspection
2017-12-18Rodent inspection: Passed
2017-08-28Rodent inspection: Passed
2017-01-26Boiler inspection — defects found
2016
2016-11-10HPD class I: SECTION27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE ?27-2097 AND IS THER
2016-09-07Deed — from RIZZO, LORENZA; RIZZO, ANTONINO; RIZZO, NICOLA to 336 KNICKERBOCKER REALTY LLC
2016-08-01Deed transfer (nominal price)
2016-07-28311: Street Condition — Pothole
2016-07-27311: Street Condition — Cave-in
2016-07-16311: Graffiti — Graffiti
2016-07-15311: Street Condition — Cave-in
2016-07-15311: Street Condition — Cave-in
2016-07-09311: Street Condition — Cave-in
2016-04-19HPD class B: SECTION 27-2005, 2007 ADM CODE AND DEPT. RULES AND REGULATIONS. REMOVE THE ENCUMBRANCE OBSTRUCTING EGRESS FROM FIRE ESCAPES AC UNIT AT WEST
2016-04-15311: PAINT/PLASTER — CEILING
2016-04-15311: ELECTRIC — NO LIGHTING
2016-04-15Tenant complaint: ELECTRIC — NO LIGHTING