3 floors · 2 apartments · 4,126 sq ft · built 1930 · class S2 · owner of record: 450 Knickerbocker Llc
New violations the morning after they're issued, plus deadline reminders. Free for one building.
| Requirement | Due | Status |
|---|---|---|
| Gas piping inspection (2026 cycle) Likely applies Local Law 152 · During 2026 What this isBuildings with gas piping (except one- and two-family homes) need a periodic gas piping inspection by a licensed master plumber every four years. Community district 4 is on the 2026 cycle; certification is filed with DOB after the inspection. Buildings with no gas piping file a certification instead. Agency page | Dec 31, 2026 in 69 days | Due this year |
| Annual parapet observation Check Local Law 126 · By December 31 each year What this isIf the building has a parapet facing a street, sidewalk or other public way, a competent person (such as a mason, engineer or architect) must observe it every year and the owner keeps the report for DOB on request. Detached one- and two-family homes are exempt. Agency page | Dec 31, 2026 in 69 days | Keep the report on file (not filed with DOB) |
| Annual boiler inspection (1 boiler) Applies Boiler inspection · By December 31 each year What this isBoilers are inspected each calendar year and the report is filed in DOB NOW: Safety within 14 days of the inspection (low-pressure boilers in residential buildings of 5 or fewer families are exempt). Latest report on record: 2025-12-21 (Accepted). Agency page | Dec 31, 2026 in 69 days | 1 of 1 without an accepted 2026 report yet |
| Annual property registration Check HPD registration · September 1 each year What this isResidential buildings with three or more units, and one- and two-family homes the owner doesn't occupy, register with HPD every year ($13 fee). An unregistered building can't start a nonpayment case in Housing Court and faces civil penalties. Agency page | Sep 1, 2027 in 313 days | Required only if the owner doesn't live there |
None open.
| Issued | Violation | Status |
|---|---|---|
| Oct 12, 1995 | CONSTRUCTION #04A02 | VIOLATION WORK WITHOUT PERMIT - ACTIVE |
| Jun 1, 1994 | LOCAL LAW 62/91 - BOILERS #09625 | DOB VIOLATION - ACTIVE |
| Aug 16, 1993 | LOCAL LAW 62/91 - BOILERS #25625 | DOB VIOLATION - ACTIVE |
| Jun 1, 1993 | LOCAL LAW 62/91 - BOILERS #09624 | DOB VIOLATION - ACTIVE |
| Issued | Violation | Status |
|---|---|---|
| Jun 1, 1994 | Boiler LL6291 | Active |
| Jun 1, 1993 | Boiler LL6291 | Active |
| Issued | Class | Violation | Correct by |
|---|---|---|---|
| Nov 6, 2013 | B | Apt 2 · SECTION 27-2046.1, 2046.2 HMC: PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH APPLICABLE LAW AND RULES. IN THE ENTIRE APARTMENT LOCATED AT APT 2, 2nd STORY, 1st APARTMENT FROM EAST AT SOUTH | Dec 11, 2013 |
Always confirm on the city's own systems before acting: DOB BIS property profile · DOB NOW · HPD Online · Pay ECB/OATH penalties (CityPay)
City records as of Oct 23, 2026, 10:18 AM ET. BBL 3032880020.