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400 Avenue U, Brooklyn, NY 11223

BBL 3071297501 (Borough 3, Block 7129, Lot 7501) · BIN 3192819 · Last updated:

Also recorded in city data as: 400-402 Ave U

Summary · as of October 31, 2026

400 Avenue U (Brooklyn, NY 11223; tax lot BBL 3071297501) is a 28-unit condominium (building class RM: condominium (subtype RM)), built around 2009, on a 20,000 sq ft lot zoned R6A. City tax records list the owner as UNAVAILABLE OWNER. As of October 31, 2026, NYC Open Data shows five DOB jobs with a permit issued but no sign-off, six active ECB violations and two OATH tickets with an unpaid balance. There were 10 311 requests in the past 12 months and no HPD complaints since 2019. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

Owner of record
UNAVAILABLE OWNER
Building class
RM · Condominium
Year built · units
2009 · 28 res.
Lot area · zoning
20,000 sq ft · R6A
Market value (DOF)
$0 FY2027
Last priced deed
—
BBL
3071297501
BIN
3192819

How to cite: NYC Property Facts, “400 Avenue U, Brooklyn, NY 11223 (BBL 3071297501)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/400-avenue-u-3071297501. Source: NYC Open Data.

Lot & building

Basic facts about the tax lot and building from the city’s PLUTO database.

Owner (as listed by the city)
UNAVAILABLE OWNERThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
RM – Condominium (subtype RM)The Department of Finance’s category for what kind of building this is.
Land use
Mixed residential & commercialCity Planning’s broad category of how the lot is used.
Year built
2009Often an estimate for older buildings. Major alteration recorded: 2008.
Floors
6
Units
28 residential / 90 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
20,000 sq ft (200 ft × 100 ft)
Building floor area
79,051 sq ft (incl. 28,206 sq ft commercial)
Zoning
R6A, C2-4, OPThe zoning district sets what can be built and used here. Residential district; the overlay (C1/C2…) allows local retail on residential blocks.
Built vs. allowed density (FAR)
3.95 built / 3.00 max residentialFloor Area Ratio = building floor area ÷ lot area. If built FAR is below the maximum, zoning may allow more floor area (other rules apply).
Identifiers
BBL 3071297501 (Borough 3, Block 7129, Lot 7501) · BIN 3192819BBL identifies the tax lot; BIN identifies each building (from DOB/HPD/footprint records).

Source: PLUTO (Dept. of City Planning) — city dataset updated 2026-08-24; data as of 2026-11-01; Building Footprints — city dataset updated 2026-10-25; data as of 2026-11-01

Tax assessment

How the Department of Finance values this lot for property tax.

Market value (tax year 2027, final roll)
$0The Department of Finance’s estimate of value for tax purposes. It is not an appraisal and is often far from the sale price.
Assessed value
$0The portion of market value that taxes are calculated on (capped by law for small homes).
Tax class
Tax class 2 – residential, 4+ units
Tax yearRollMarket valueAssessed valueTax class
2027Final$0$02
2026Final$0$02
2025Final$0$02

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-01

Sales & deed history 0

Deeds recorded with the City Register (ACRIS). A deed transfers ownership. A $0 or very low price usually means a transfer between related parties, an estate, or a refinance-related transfer, not a market sale. This is not a title search; mortgages, liens and other documents are not shown.

No records found in this dataset for this lot.

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-01; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-01; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-01

DOB job filings 5 open of 9

A “job” is an application to the Department of Buildings to do construction work. A job marked Permitted, not signed off had a work permit issued but the city has no record of final sign-off (inspection/completion). Old jobs left in this state are common and appear in buyer and lender due diligence; the work may or may not have been done.

StatusJob #TypeFiledEst. cost
Permitted, not signed off
Permit Entire · 2026-02-13
B01006818-I1
DOB NOW
Alteration2024-02-20$1,000
Permitted, not signed off
Permit Entire · 2024-06-21
B00941039-S2
DOB NOW
Alteration2023-12-13$10,000
Permitted, not signed off
Permit Entire · 2024-05-06
B00941039-S1
DOB NOW
Alteration2023-11-07$57,500
Permitted, not signed off
Permit Entire · 2024-06-21
B00941039-I1
DOB NOW
Alteration2023-09-29$193,425
Permitted, not signed off
PERMIT ISSUED - ENTIRE JOB/WORK · 2014-08-11
321214583
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2014-07-22$165,500
Not open
LOC Issued · 2025-11-03
B00941039-S3
DOB NOW
Alteration2024-01-11$3,800
Not open
SIGNED OFF · 2015-10-01
320957185
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2014-08-27$116,800
Not open
APPLICATION PROCESSED - ENTIRE · 2014-07-18
340166901
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2014-07-18$165,500
Not open
SIGNED OFF · 2014-06-26
340128212
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2014-03-19$37,550

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-10-31; data as of 2026-11-01; DOB Job Application Filings (BIS) — city dataset updated 2026-10-30; data as of 2026-10-31

Work permits 17

Individual permits issued under DOB jobs (one job can have several permits, e.g. plumbing and construction). Permit expiration alone does not mean the job was completed or signed off.

IssuedExpiresJob #WorkPermit status
2026-02-132026-11-16B01006818-I1
DOB NOW
Protection and Mechanical Methods
INSTALLATION OF TEMPORARY WORKING PLATFORM AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
Permit Issued
2025-02-182026-02-18B01006818-I1
DOB NOW
Protection and Mechanical Methods
INSTALLATION OF TEMPORARY WORKING PLATFORM AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
Permit Issued
2024-07-012025-05-23B00941039-S3
DOB NOW
Sprinklers
SPRINKLER HEADS RELOCATED AS PER PLANS
Signed-off
2024-06-212025-06-03B00941039-S2
DOB NOW
Mechanical Systems
INSTALL MECH VANTS AS PER PLANS
Signed-off
2024-06-212025-06-03B00941039-I1
DOB NOW
General Construction
INTERIOR RENOVATION OF DUPLEX APARTMENT
Signed-off
2024-05-062025-05-06B00941039-S1
DOB NOW
Plumbing
INSTALL PLUMBING FIXTURES AND RELATED PIPING WITHIN UNIT 307 (EXISTING DUPLEX ON 2ND AND 3RD FLOORS) AS PER PLANS
Permit Issued
2024-02-272025-02-27B00941039-S2
DOB NOW
Mechanical Systems
INSTALL MECH VANTS AS PER PLANS
Signed-off
2024-02-272025-02-27B00941039-I1
DOB NOW
General Construction
INTERIOR RENOVATION OF DUPLEX APARTMENT
Signed-off
2024-02-212025-02-21B01006818-I1
DOB NOW
Protection and Mechanical Methods
INSTALLATION OF TEMPORARY WORKING PLATFORM AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.
Permit Issued
2015-04-082015-05-07320957185
BIS
Equipment work / Mechanical/HVACISSUED (initial)
2014-09-162015-09-16320957185
BIS
Equipment work / SprinklerISSUED (initial)
2014-09-112015-09-11320957185
BIS
Plumbing / PlumbingISSUED (initial)

Showing 12 of 17 records. The API and the source dataset have the full list.

Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-10-31; data as of 2026-11-01; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31

DOB violations 0 active of 8

Violations issued by the Department of Buildings for building-code or zoning conditions. Active means DOB has not recorded the violation as resolved or dismissed. Many active DOB violations are old (e.g. elevator or boiler inspection paperwork).

StatusIssuedTypeDescriptionNumber
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2020-09-02AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONEFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATIONV*090220AEUHAZ104915
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2020-09-02AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONEFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATIONV*090220AEUHAZ104914
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2020-09-02AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONEFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATIONV*090220AEUHAZ104912
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
2020-09-02AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONEFAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATIONV*090220AEUHAZ104913
Resolved/dismissed
V*-DOB VIOLATION - Resolved
2018-10-09E-ELEVATOR ELEVATORREQUIREDV*100918E9028/635202
Resolved/dismissed
V*-DOB VIOLATION - Resolved
2014-12-18E-ELEVATOR ELEVATORREQUIREDV*121814E9027/531887
Resolved/dismissed
V*-DOB VIOLATION - Resolved
2014-12-18E-ELEVATOR ELEVATORREQUIREDV*121814E9027/531886
Resolved/dismissed
V*-DOB VIOLATION - Resolved
2014-12-18E-ELEVATOR ELEVATORREQUIREDV*121814E9027/531884

Source: DOB Violations — city dataset updated 2026-10-31; data as of 2026-11-01

ECB violations (DOB) 6 active of 11

DOB violations that go to a hearing at OATH (formerly the Environmental Control Board) and can carry fines. Active or Resolved follows the DOB violation status field. The hearing status is about the hearing and its penalty: written off means the city stopped collecting the fine, not that the condition was corrected. A balance due is a fine the city says is unpaid.

StatusIssuedSeverityWhat it was forPenalty / paid / balanceECB #
Resolved
Hearing: IN VIOLATION · Certification: CERTIFICATE ACCEPTED
2007-01-05HazardousNO SIDEWALK SHED. UPON INSP OF ABOVE INTERIOR DEMO IN PROGRESS. SWS WAS REQUESTED BY DOB & NOT ERECTED. REMEDY: STOP DEMO WORK. PROVIDE SIDEWALK SHED, CALL BEST SQUAD FOR RE INSP.$2,000 / $2,000 / $034554836X
Resolved
Hearing: IN VIOLATION · Certification: CERTIFICATE ACCEPTED
2007-01-16HazardousFAILURE TO SAFEGUARD PUBLIC & PROPERTY UPON INSP ROOF & PARAPIT HAS BEEN DEMOLISHED AS WELL AS ALL INTERIOR PARTS.NO OVER HEAD PROTECT SAFETY ZONE FENCE HAS BEEN PROVIDED ADJ 2172 EAST 3RD ST SIDE WALKWAY$1,500 / $1,500 / $034554046L
Active
Hearing: DEFAULT · Certification: NO COMPLIANCE RECORDED
2023-05-11CLASS - 1CLASS 2: REPAIR MANUAL DOOR RELEASE BOX ON LEVEL ., PROVIDE UP TO DATE ELEVATOR MAINTENANCE LOG BOOK., REMOVE OIL FROM OIL-PAN., REPAIR IN-CAR EMERGENCY PHONE., CLASS 1: CEASE USE ITEM. REPAIR IN-CAR EMERGENCY$6,250 / $0 / $6,25039086122L
Active
Hearing: DEFAULT · Certification: NO COMPLIANCE RECORDED
2023-05-11CLASS - 1CLASS 1: CEASE USE ITEM. REPAIR IN-CAR EMERGENCY STOP SWITCH. *** TO RETURN THIS DEVICE TO SERVICE CONTACT NYC DOB BY EMAILING EIR@BUILDINGS.NYC.GOV ***$6,250 / $0 / $6,25039086123N
Resolved
Hearing: STIPULATION/IN-VIO · Certification: CERTIFICATE ACCEPTED
2017-10-25CLASS - 267X10,48Y13,48BB05,68M07.(48Y)SEAL LEDES.(48BB)LOGS ONE/PRESSURE TESTS(68M)CURRENT LOG.$500 / $501 / $038259011P
Active
Hearing: IN VIOLATION · Certification: NO COMPLIANCE RECORDED
2020-03-09CLASS - 1CLASS 1 ITEM: MISSING DLM AS NOW REQUIRED BY CODE. CLASS 2 ITEMS: MISSING IN CASE OF FIRE SIGNS AS PER FDNY. WORN CAR SHOES. PROVIDE SELF CLOSING/SELF LOCKING FIRE RATED GOV ACCESS DOOR AS PER CODE. GOV ACCESS$1,250 / $1,314 / $039019215K
Active
Hearing: IN VIOLATION · Certification: NO COMPLIANCE RECORDED
2020-03-09CLASS - 1CLASS 1 ITEMS: MISSING DLM AS NOW REQUIRED BY CODE. CLASS 2 ITEMS: PROVIDE CAB MIRROR. SECURE HOISTWAY DOOR GIBS WHERE NEEDED. KINKS IN GOV ROPE: REPLACE. PROVIDE BRAILLE TAGS WHERE MISSING. ROUGE DEVELOPING ON$1,250 / $1,314 / $039019216M
Resolved
Hearing: IN VIOLATION · Certification: CERTIFICATE ACCEPTED
2007-01-16HazardousFAILURE TO SAFEGUARD PUBLIC & PROPERTY UPON INSP 2 WORKERS ON ROOF.NO OVER HEAD PROTECT-PROVIDE TO ADJ PROPERTY 2145 EAST 2ND ST BLDG 402 ISON LOT LINE & ADJ DRIVEWAY & ENTRANCE TO 2145 HOUSE.NO OVER HEAD$1,500 / $1,500 / $034554044H
Active
Hearing: IN VIOLATION · Certification: NO COMPLIANCE RECORDED
2020-03-09CLASS - 1CLASS ONE ITEM: UNGUARDED BASEMENT KEY SWITCH AND WIRING DISCONNECTED CLASS 2 ITEMS: MAINT LOG NOT UP TO DATE. DEFECTIVE CAR PHONE. ADJUST DOOR CLOSE TIMING. OIL TANK LEAKING. PISTON LEAKING. MIING CONTROLLER P$1,250 / $1,314 / $039019217Y
Active
Hearing: IN VIOLATION · Certification: NO COMPLIANCE RECORDED
2020-03-09CLASS - 1CLASS 1 ITEM: MISSING DLM AS NOW REQUIRED BY CODE CLASS 2 ITEMS: PROVIDE CAB MIRROR. ILLEGAL VESTIBULE AT TOP LANDING ; PROVIDE ZERO CLEARENCE VESTIBULE AS PER 2.11.6.5. SECURE HOISTWAY DOOR GIBS WHERE NEEDED.$1,250 / $1,314 / $039019214Z
Resolved
Hearing: IN VIOLATION · Certification: CERTIFICATE ACCEPTED
2007-02-17Non-HazardousNO DOT PERMIT POSTED.UPON INSP AT ABOVE PROPERTY DEMOLITION WAS IN PROGRESS-BLDG DEMO TO 1ST FLR & 30 YARD CONTAINER WAS PLACED ON E 3 ST INFRONT OF 2160 E 3 ST & NO DOT PERMIT WAS POSTED.REMEDY:POST DOT PERMIT$400 / $400 / $034554491J

Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-11-01

OATH tickets (all agencies) 2 unpaid of 35

Summonses heard at the Office of Administrative Trials and Hearings, from agencies like Sanitation, Buildings, Fire and Health, linked to this lot’s block and lot. Default means the respondent did not appear at the hearing, which typically results in the maximum penalty. Tickets may be issued to tenants or businesses at the address, not just the owner. DOB ECB tickets appear here too.

StatusDateAgencyChargeRespondentImposed / paid / balanceTicket #
Unpaid balance Default
DOCKETED · DEFAULTED
2023-05-11Dept. Of BuildingsFAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEMTHE RESIDENCES AT 400 U$6,250 / $0 / $6,250039086123N
Unpaid balance Default
DOCKETED · DEFAULTED
2023-05-11Dept. Of BuildingsFAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEMTHE RESIDECES AT 400 U$6,250 / $0 / $6,250039086122L
No balance due Default
PAID IN FULL · DEFAULTED
2025-10-31Sanitation OthersDIRTY SIDEWALKTHE RESIDENCES AT 400 U$300 / $50 / $0049539515Y
No balance due
PAID IN FULL
2025-08-27Sanitation OthersDIRTY SIDEWALKTHE RESIDENCES AT 400 U$50 / $50 / $0049395653M
No balance due
PAID IN FULL · IN VIOLATION
2024-12-12Fire Department Of NycFIRE PROTECTION SYSTEMSRESIDENTIAL AT 400U, LLC.$925 / $925 / $0014160731M
No balance due
PAID IN FULL · IN VIOLATION
2024-06-18Fire Department Of NycINSPECTION AND TESTINGRESIDENTIAL AT 400U LLC$600 / $600 / $0014130320K
No balance due
PAID IN FULL · IN VIOLATION
2022-10-28Fire Department Of NycINSPECTION AND TESTINGRESIDENTS AT 400 U LLC$600 / $600 / $0014039206J
No balance due
PAID IN FULL · IN VIOLATION
2022-10-28Fire Department Of NycINSPECTION AND TESTINGRESIDENTS AT 400 U LLC$600 / $600 / $0014039213H
No balance due
PAID IN FULL · IN VIOLATION
2020-03-09Dept. Of BuildingsFAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEMAVENUE PARTNERS LLC$1,250 / $1,314 / $0039019216M
No balance due
PAID IN FULL · IN VIOLATION
2020-03-09Dept. Of BuildingsFAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEMAVENUE U PARTNERS LLC$1,250 / $1,314 / $0039019214Z
No balance due
PAID IN FULL · IN VIOLATION
2020-03-09Dept. Of BuildingsFAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEMAVE U PARTNERS LLC$1,250 / $1,314 / $0039019217Y
No balance due
PAID IN FULL · IN VIOLATION
2020-03-09Dept. Of BuildingsFAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEMAVE U PARTNERS LLC$1,250 / $1,314 / $0039019215K

Showing 12 of 35 records. The API and the source dataset have the full list.

Source: OATH Hearings Division Case Status — city dataset updated 2026-11-01; data as of 2026-11-01

HPD registration & contacts

Owners of most rental buildings must register with the Department of Housing Preservation and Development each year and list an owner and managing agent.

HPD building ID
933700
Last registered
2026-08-26
Registration valid until
2027-09-01 CurrentRegistrations must be renewed every year.
RoleNameCompanyBusiness city
SitemanagerNikolaos Leonardos
HeadofficerNikolaos LeonardosBrooklyn, Ny
AgentNikolaos LeonardosDAFNONAS ESTATES LTDBrooklyn, Ny
CorporateownerTHE RESIDENCES AT 400 UBrooklyn, Ny

Source: HPD Multiple Dwelling Registrations — city dataset updated 2026-10-28; data as of 2026-11-01; HPD Registration Contacts — city dataset updated 2026-10-28; data as of 2026-11-01

HPD housing-code violations 0 open of 2

Violations HPD inspectors issued for conditions in residential buildings (heat, leaks, mold, pests, lead paint, etc.). Class letters show how serious: Class A – non-hazardous (HPD gives 90 days to correct); Class B – hazardous (30 days to correct); Class C – immediately hazardous (24 hours to correct for most conditions); Class I – information / order (e.g. orders to register, lead or other administrative orders). Open means HPD has not recorded the condition as corrected.

StatusClassIssuedAptCondition
Closed
Violation Dismissed · 2024-12-23
I2024-11-27§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 SUBJECT TO CIVIL PENALTIES, PROHIBITED FROM CERTIFYING VIOLATIONS, AND DENIED THE RIGHT TO RECOVER POSSESSION OF PREMISE
Closed
Violation Dismissed · 2021-05-18
A2021-04-20(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 HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.

Source: HPD Housing Maintenance Code Violations — city dataset updated 2026-10-31; data as of 2026-11-01

HPD complaints 0

Complaints tenants or others made to HPD (usually via 311) about housing conditions, from 2019 onward. A complaint is not a violation; HPD may inspect and issue one.

No records found in this dataset for this lot.

Source: HPD Housing Maintenance Code Complaints and Problems — city dataset updated 2026-11-01; data as of 2026-11-01

311 requests (last 12 months) 10

Recent 311 service requests the city geocoded to this lot: noise, illegal parking, heat, sanitation and more. Anyone can file them, so they describe activity at or near the address, not necessarily the building itself.

OpenedAgencyComplaintStatusClosed
2026-10-30DEPNoise – ConstructionIn Progress2026-10-30
2026-10-02DEPNoise – ConstructionClosed2026-10-03
2026-09-11DSNYIllegal Dumping – Removal RequestClosed2026-09-14
2026-06-14NYPDIllegal Fireworks – N/AClosed2026-06-14
2026-03-24DSNYDirty Condition – TrashClosed2026-03-24
2026-03-06DPROvergrown Tree/Branches – Hitting BuildingIn Progress—
2026-02-02DSNYSnow or Ice – SidewalkClosed2026-02-08
2026-01-30DPROvergrown Tree/Branches – Hitting BuildingIn Progress—
2026-01-15DPRDamaged Tree – Branch or Limb Has Fallen DownIn Progress—
2025-11-06DEPSewer – Catch Basin Clogged/Flooding (Use Comments) (SC)Closed2025-11-06

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-01; data as of 2026-11-01

Nearby properties

On Ave U

Same tax block (7129)

All properties on Ave U, Brooklyn · All of Brooklyn 11223 (Gravesend (East)-Homecrest)

Open-item counts as of October 31, 2026; each section lists its own dataset date. Machine-readable: JSON API · Markdown · Plain text · API & MCP docs