Manhattan · Block 1976 · Lot 10 · 10027

527 West 121 Street

6 floors · 24 apartments · 28,668 sq ft · built 1926 · class D1 · owner of record: Trustees Of Columbia University

20open violations
$0ECB/OATH penalties owed
0HPD class C (immediately hazardous)
46dto 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 9 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 46 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 46 days
Keep the report on file (not filed with DOB)
Bedbug annual filing Applies
Local Law 69 · December 1 to 31 each year
What this is

Owners of multiple dwellings file their bedbug infestation history for the prior year with HPD and post or distribute it to tenants. Agency page

Dec 31, 2026
in 46 days
Annual
Annual notice: window guards and lead paint Applies
HPD / Health Code · January 1 to 16 each year
What this is

Deliver the annual notice to every unit asking whether a child lives there (window guards for children 10 and under; lead paint for children under 6 in pre-1960 buildings), then follow up on units that don't return it by mid-February. Agency page

Jan 16, 2027
in 62 days
Annual
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 28,668 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 167 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 167 days
Annual filing
Annual property registration Applies
HPD registration · September 1 each year
What this is

Residential 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 290 days
Registered through 2027-09-01
Annual boiler inspection (2 boilers) Applies
Boiler inspection · By December 31 each year
What this is

Boilers 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: 2026-09-29 (Accepted). Agency page

On file2026 reports accepted

Open violations

ECB / OATH (0)

None open.

DOB (3)
IssuedViolationStatus
Jun 20, 2023LOW PRESSURE BOILER
VIOLATION ISSUED-FAILURE TO FILE 2018 EXTERNAL LOW PRESSURE INSPECTION
#05450
DOB VIOLATION - ACTIVE
Jun 20, 2023LOW PRESSURE BOILER
VIOLATION ISSUED-FAILURE TO FILE 2019 EXTERNAL LOW PRESSURE INSPECTION
#26951
DOB VIOLATION - ACTIVE
Nov 8, 2019LOW PRESSURE BOILER
VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2017 INSPECTION REPORT
#00150
DOB VIOLATION - ACTIVE
DOB NOW Safety (5)
IssuedViolationStatus
Dec 3, 2025Benchmarking - LL84 FTF-EN-BENCH
FAILURE TO FILE BENCHMARKING REPORT OF ENERGY USE AS PER AD. CODE SEC. 28-309.4
Active
Sep 26, 2025Benchmarking - LL84 FTF-EN-BENCH
FAILURE TO FILE BENCHMARKING REPORT OF ENERGY USE AS PER AD. CODE SEC. 28-309.4
Active
Jun 20, 2023Boiler LBLVIO
VIOLATION ISSUED-FAILURE TO FILE 2018 EXTERNAL LOW PRESSURE INSPECTION
Active
Jun 20, 2023Boiler LBLVIO
VIOLATION ISSUED-FAILURE TO FILE 2019 EXTERNAL LOW PRESSURE INSPECTION
Active
Nov 8, 2019Boiler LBLVIO
VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2017 INSPECTION REPORT
Active
HPD (12) · C 0 · B 9 · A 3
IssuedClassViolationCorrect by
Oct 13, 2017BApt 63 · § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE FOYER LOCATED AT APT 63, 6th STORY, 1st APARTMENT FROM EAST AT SOUTHNov 17, 2017
Oct 13, 2017BApt 63 · § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILINGS AND ALL WALLS THROUGH OUT IN THE ENTIRE APARTMENT LOCATED AT APT 63, 6th STORY, 1st APARTMENT FROM EAST AT SOUTHNov 17, 2017
Oct 13, 2017BApt 63 · § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE VINYL FLOOR TILES IN THE KITCHEN LOCATED AT APT 63, 6th STORYNov 17, 2017
Oct 13, 2017BApt 63 · § 27-2005 ADM CODE PROPERLY REPAIR THE BROKEN OR DEFECTIVE GLASS PANE IN LOWER WINDOW SASH IN THE 3rd ROOM FROM EAST AT SOUTH LOCATED AT APT 63, 6th STORY, 1st APARTMENT FROM EAST AT SOUTHNov 17, 2017
Jun 25, 2008BApt 54 · D26-10.01, 10.05 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS ENTRANCE 5TH STY SOUTHWEST APT 54. , SECTION '' ''Jul 30, 2008
Jun 25, 2008AD26-10.01 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE CONCRETE CEILING AT SOUTHEAST FIRE PASSAGEWAY YARD.Sep 28, 2008
Jun 25, 2008BApt 61 · D26-10.01, 10.05 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS ENTRANCE TO 6TH STY NORTHEAST APT 61. LOCATED AT APT 61Jul 30, 2008
Jun 25, 2008BApt 21 · D26-10.01, 10.05 ADM CODE ARRANGE AND MAKE SELF-CLOSING THE DOORS ENTRANCE 2ND STY NORTHEAST APT 21. LOCATED AT APT 21Jul 30, 2008
Jul 28, 2006AApt 53 · SECTION 27-2005 ADM CODE REPLACE WITH NEW THE BROKEN OR DEFECTIVE MARBLE DOOR SADDLE 5 STY REAR WEST APT 53 ENTRANCE. LOCATED AT APT 53Nov 12, 2006
Jul 28, 2006ASECTION 27-2005 ADM CODE REPLACE WITH NEW THE MISSING BX BOX COVER CEILING CELLAR PUBLIC HALL FRONT.Nov 12, 2006
Nov 3, 1997BApt 21 · SECTION 27-2018 ADM CODE ABATE THE NUISANCE CONSISTING OF VERMIN ROACHES THRU OUT 2 STY NORTHEAST APT 21 , SECTION '' ''Dec 21, 1997
Apr 16, 1991BSECTION 27-2005 ADM CODE PROPERLY SECURE THE LOOSE GLASS UPPER SASH 6 STY PUBLIC HALL STAIRS.Jun 3, 1991

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 Nov 15, 2026, 3:31 AM ET. BBL 1019760010.

Look up another building