Brooklyn · Block 3399 · Lot 1 · 11221

749 Knickerbocker Avenue

3 floors · 40,415 sq ft · built 1922 · class W2 · owner of record: St Martin Of Tours Rc

6open violations
$0ECB/OATH penalties owed
0HPD class C (immediately hazardous)
68dto Gas piping inspection (2026 cycle)

Get an email when anything changes here

New violations the morning after they're issued, plus deadline reminders. Free for one building.

Compliance deadlines

RequirementDueStatus
Gas piping inspection (2026 cycle) Likely applies
Local Law 152 · During 2026
What this is

Buildings 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 68 days
Due this year
Annual parapet observation Check
Local Law 126 · By December 31 each year
What this is

If 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 68 days
Keep the report on file (not filed with DOB)
Energy and water benchmarking Likely applies
Local Law 84 · May 1 each year
What this is

Buildings over 25,000 sq ft (this lot shows 40,415 sq ft) report energy and water use for the prior calendar year through ENERGY STAR Portfolio Manager. The city's Covered Buildings List is the final word on which buildings must file. Agency page

May 1, 2027
in 189 days
Annual filing
Building emissions report Likely applies
Local Law 97 · May 1 each year (extensions available)
What this is

Covered buildings file an annual greenhouse gas emissions report certified by a registered design professional. Buildings over their emissions limit owe penalties, so it pays to check early. Agency page

May 1, 2027
in 189 days
Annual filing

Open violations

ECB / OATH (1)
IssuedViolationHearingBalance
Apr 3, 2023Construction CLASS - 2
ALTERED/CHANGED BUILDING OCCUPIED WITHOUT A VALID CERTIFICATE OF OCCUPANCY AS PER 28-118.3.1 - 28-118.3.2; NOTED: OBSERVED BUILDING IS OCCUPIED AS AN INSTITUTION WITH SLEEPING WHEN ALT 1 APPLICATION # 301546094
#39082925R
Dec 1, 2023
IN VIOLATION
$0
DOB (1)
IssuedViolationStatus
Dec 2, 2021ELEVATOR

#9027/711640
DOB VIOLATION - ACTIVE
DOB NOW Safety (4)
IssuedViolationStatus
Oct 31, 2025Gas Piping - LL152 FTF-PL-PER
Cycle 1, Sub-cycle C (premises is in Community District 4)
Active
Oct 31, 2025Gas Piping - LL152 FTF-PL-PER
Cycle 1, Sub-cycle C (premises is in Community District 4)
Active
Oct 23, 2023Elevators FTC-VT-CAT1-CO
Violation Issued-Failure To File 2022 Cat1 Test Affirmation of Correction
Active
Oct 2, 2023Elevators FTC-VT-PER-CO
Violation Issued-Failure To File 2022 Periodic Inspection Affirmation of Correction
Active
HPD (0)

None open.

Check the agency records

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 24, 2026, 5:44 PM ET. BBL 3033990001.

Look up another building