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Brooklyn • Condo

400 Ave U

Brooklyn, NY 11223BBL 3071297501BIN 3192819
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Updated Aug 2, 2026 · 16 sources

Year Built2009
Floors6
Units90
Building Area79,051 sqft
ZoningR6A
ClassRM
Market Value$205K

400 AVE U is a property located at 400 AVE U, Brooklyn, NY 11223. It is classified as a condo - multi-dwelling. The building was constructed in 2009. It has 6 floors and 90 units. The building area is 79,051 square feet on a 20,000 sqft lot. The property is zoned R6A. The assessed market value is $205K. It last sold for $5.5M on Oct 28, 2008. There are 135 building permits on record (86 active). There are 30 violations on record (6 currently open). 13 docketed judgments carrying $12,800 in open balances are on record with OATH. Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

285records on file
85Energy Star

Completed in 2009, 400 Ave U rises 6 stories over Kings. Public records put it at 90 units and 79,051 square feet of floor area, on land zoned R6A. It is carried on the public rolls at a market value of $205K, and assessed for tax at $92.1K. In the 66 years its record reaches back, the lot has drawn 285 separate government filings.

The documentary life of the address leans hard toward permit: 135 of its 285 records, fully 47%, fall under that one heading. Enforcement (34) and violation (30) trail well behind. 6 violations stand open against it today.

The pace is anything but even. The early decades pass in near silence; the filings cluster heavily in recent years, peaking in 2010.

On the environmental ledger, the building posts an Energy Star score of 85, with a site energy-use intensity of 46.1 kBtu per square foot. Its operations answer for roughly 429 metric tons of CO2-equivalent a year.

Read together — 47% permit, 66 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$205K of Kings, written across 285 government filings.

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Sources
NYC DOBNYC HPDNYC DOFACRISNYC DCPECB/OATHNYC DEPNYC LPCNYC FDNYNYS DHCRMOCEJFEMAEPAUS CensusHUDUSGS
updated

Property Details

Address400 AVE U, Brooklyn, NY 11223
Building TypeCondo - Multi-Dwelling
RM
Year Built2009
Floors6
Total Units90
Building Area79,051 sqft
Lot Size20,000 sqft
ZoningR6A
ConditionGood
3071297501
3192819

Assessment & Sales

$205K
$92K
$5K
$5.5M
Last Sale DateOct 28, 2008

Building Permits

135 on record · 86 active
Mechanical SystemsDOB NOW
PERMIT ISSUED
Filed Feb 13, 2026Est. cost $1KJob #B01006818-I1

Renewal Permit Without Changes

View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Feb 13, 2026Est. cost $1KJob #B01006818-I1
View this permit's full record & inspection history →
General ConstructionDOB NOW
LOC ISSUED
Filed Nov 3, 2025Est. cost $4KJob #B00941039-S3
View this permit's full record & inspection history →
ElectricalDOB NOW
PERMIT ISSUED
Filed Jan 29, 2025Job #B01173677-I1-EL

Combine apartments 307 & 308

View this permit's full record & inspection history →
SprinklerDOB NOW
SIGNED-OFF
Filed Jul 1, 2024Est. cost $4KJob #B00941039-S3

Initial Permit

View this permit's full record & inspection history →

+ 130 more permits — view full report

Violations

30 on record · 6 open
Open judgment balance — docketed OATH judgments$12,800
Judgments · 13 docketed
Sanitation summons (OATH)JUDGMENT DOCKETED
Docketed May 31, 2026Balance $300Ticket #049539515Y
DIRTY SIDEWALK
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Oct 31, 2023Balance $6,250Ticket #039086122L
FAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEM
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Oct 31, 2023Balance $6,250Ticket #039086123N
FAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEM
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Oct 31, 2020Ticket #039019214Z
FAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEM
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Oct 31, 2020Ticket #039019215K
FAILURE TO MAINTAIN ELEVATOR OR CONVEYING SYSTEM

+ 8 more docketed judgments — view full report

ECBElevator
ACTIVE
Issued May 11, 2023#39086123N

CLASS 1: CEASE USE ITEM. REPAIR IN-CAR EMERGENCY STOP SWITCH. *** TO RETURN THIS DEVICE TO SERVICE CONTACT NYC DOB BY EMAILING [email protected] ***

View this violation's full details & status history →
ECBElevator
ACTIVE
Issued May 11, 2023#39086122L

CLASS 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

View this violation's full details & status history →
ECBElevator
ACTIVE
Issued Mar 9, 2020#39019215K

CLASS 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

View this violation's full details & status history →
ECBElevator
ACTIVE
Issued Mar 9, 2020#39019214Z

CLASS 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.

View this violation's full details & status history →
ECBElevator
ACTIVE
Issued Mar 9, 2020#39019217Y

CLASS 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

View this violation's full details & status history →

+ 25 more violations on record — view full report

Get the Complete Report for 400 AVE U

Title history, detailed tax records, environmental data, zoning analysis, and more from 250+ government sources.

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Frequently Asked Questions

When was 400 AVE U, Brooklyn built?

The building at 400 AVE U, Brooklyn, NY 11223 was constructed in 2009. It is classified as a condo - multi-dwelling with 6 floors and 90 units. The building area is 79,051 sqft.

Are there building permits at 400 AVE U, Brooklyn?

Yes. 400 AVE U, Brooklyn, NY 11223 has 135 building permits on record, with 86 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Mechanical Systems (PERMIT ISSUED) filed Feb 13, 2026.

Does 400 AVE U, Brooklyn have violations?

Yes. 400 AVE U, Brooklyn, NY 11223 has 30 violations on record, with 6 currently open. Breakdown: 16 DOB, 12 ECB, 2 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 400 AVE U, Brooklyn have docketed judgments?

Yes. 400 AVE U, Brooklyn, NY 11223 has 13 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $12,800. A docketed judgment is an enforceable money judgment entered by OATH after a hearing on a summons issued at this property; where the respondent is the property owner it can attach to the property as a lien.

What is the property tax assessment for 400 AVE U?

400 AVE U, Brooklyn, NY 11223 has an assessed market value of $205K and a total assessed value of $92K (land: $5K). Assessment data is from the NYC Department of Finance (DOF).

When was 400 AVE U last sold?

400 AVE U, Brooklyn, NY 11223 last sold for $5.5M on Oct 28, 2008. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 400 AVE U?

400 AVE U, Brooklyn, NY 11223 is zoned R6A. Zoning data is from the NYC Department of City Planning (DCP). For detailed FAR, overlays, and development rights, view the full property report on RegWatch.

How do I get a full property report for 400 AVE U?

Search 400 AVE U on RegWatch to see its public record free — violations, permits, tax records, zoning, environmental data, and more from 250+ government sources, no credit card required. A Full Analysis report adds the complete title history, owner contacts, and a downloadable PDF.

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400 AVE U, Brooklyn, NY 11223 — Property Records, Permits, Violations, Tax & Zoning | RegWatch