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Brooklyn • Hospital

800 Madison St

Brooklyn, NY 11221Company-ownedBBL 3016480019BIN 3045327
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16 sources

Year Built1945
Floors4
Units1
Building Area64,118 sqft
ZoningR6B
ClassI7
Market Value$11.1M

800 MADISON ST is a property located at 800 MADISON ST, Brooklyn, NY 11221. It is classified as a hospital - medical office. The building was constructed in 1945. It has 4 floors and 1 unit. The building area is 64,118 square feet on a 21,430 sqft lot. The property is zoned R6B. The assessed market value is $11.1M. It last sold for $20.7M on Nov 21, 2013. Public records list the property as company-owned. There are 73 building permits on record (42 active). There are 207 violations on record (4 currently open). 19 docketed judgments carrying $200 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

720records on file
83Energy Star

Completed in 1945, 800 Madison St rises 4 stories over Kings. Public records put it at 1 unit and 64,118 square feet of floor area, on land zoned R6B. It is carried on the public rolls at a market value of $11.1M, and assessed for tax at $5.0M. In the 41 years its record reaches back, the lot has drawn 720 separate government filings.

The documentary life of the address leans hard toward complaint: 265 of its 720 records, fully 37%, fall under that one heading. Violation (207) and enforcement (92) trail well behind. 4 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 2024.

On the environmental ledger, the building posts an Energy Star score of 83, with a site energy-use intensity of 48.3 kBtu per square foot. Its operations answer for roughly 252 metric tons of CO2-equivalent a year.

Read together — 37% complaint, 41 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$11.1M of Kings, written across 720 government filings.

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Executive summary, compliance history, title chain & existing debt, recorded documents & agreements, owner contacts, tax detail, Use & Development, build envelope, market comps, investment metrics, deal math & stress tests, deal signals, pre-foreclosure signals, neighborhood. Downloadable PDF. One payment, no subscription.

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

Address800 MADISON ST, Brooklyn, NY 11221
Building TypeHospital - Medical Office
I7
Year Built1945
Floors4
Total Units1
Building Area64,118 sqft
Lot Size21,430 sqft
ZoningR6B
3016480019
3045327
OwnershipCompany-owned

Assessment & Sales

$11.1M
$5M
$289K
$20.7M
Last Sale DateNov 21, 2013

Building Permits

73 on record · 42 active
Cats RegistrationOther
CURRENT
Filed Dec 19, 2025Job #481438
View this permit's full record & inspection history →
General ConstructionDOB NOW
LOC ISSUED
Filed Jun 18, 2025Job #B01029157-I1
View this permit's full record & inspection history →
Suspended ScaffoldDOB NOW
SIGNED-OFF
Filed Jun 13, 2025Job #B01029157-I1

Renewal Permit Without Changes

View this permit's full record & inspection history →
Cats RegistrationOther
CURRENT
Filed Apr 21, 2025Job #458968
View this permit's full record & inspection history →
General ConstructionDOB NOW
LOC ISSUED
Filed Nov 12, 2024Est. cost $18KJob #B00963645-I1
View this permit's full record & inspection history →

+ 68 more permits — view full report

Violations

207 on record · 4 open
Open judgment balance — docketed OATH judgments$200
Judgments · 19 docketed
NYPD summons (OATH)JUDGMENT DOCKETED
Docketed Dec 31, 2025Balance $50Ticket #0220209038
SMOKING IN A PARK OR ON OTHER PROPERTY UNDER JURISDICTION OF DEPT.
NYPD summons (OATH)JUDGMENT DOCKETED
Docketed Jan 6, 2026Balance $25Ticket #0220194920
OPEN CONTAINER CONSUMPTION OF ALCOHOL ON STREETS
NYPD summons (OATH)JUDGMENT DOCKETED
Docketed Jan 31, 2025Balance $50Ticket #0217699709
SMOKING IN A PARK OR ON OTHER PROPERTY UNDER JURISDICTION OF DEPT.
NYPD summons (OATH)JUDGMENT DOCKETED
Docketed Jan 31, 2023Balance $25Ticket #0214617242
OPEN CONTAINER CONSUMPTION OF ALCOHOL ON STREETS
FDNY summons (OATH)JUDGMENT DOCKETED
Docketed Jun 30, 2021Ticket #012106060K
FIRE PROTECTION SYSTEMS:FAIL TO PREVENT UNNECESSARY UNWARRANTED ALARMS

+ 14 more docketed judgments — view full report

HPDClass B
NOT COMPLIED WITH
Issued Jul 14, 2026#19080495

§ 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE GFCI ELECTRICAL OUTLET AT SOUTH WALL IN THE KITCHENETTE LOCATED AT APT 302, 3rd STORY, 3rd APARTMENT FROM WEST AT NORTH

View this violation's full details & status history →
HPDClass A
NOV SENT OUT
Issued Jul 14, 2026#19080521

§ 27-2011 ADM CODE CLEANSE TO THE SATISFACTION OF THIS DEPARTMENT THE FLOOR IN THE ENTIRE APARTMENT LOCATED AT APT 232, 3rd STORY, 4th APARTMENT FROM SOUTH AT WEST

View this violation's full details & status history →

+ 205 more violations on record — view full report

Get the Complete Report for 800 MADISON ST

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

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Frequently Asked Questions

When was 800 MADISON ST, Brooklyn built?

The building at 800 MADISON ST, Brooklyn, NY 11221 was constructed in 1945. It is classified as a hospital - medical office with 4 floors and 1 unit. The building area is 64,118 sqft.

Are there building permits at 800 MADISON ST, Brooklyn?

Yes. 800 MADISON ST, Brooklyn, NY 11221 has 73 building permits on record, with 42 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Cats Registration (CURRENT) filed Dec 19, 2025.

Does 800 MADISON ST, Brooklyn have violations?

Yes. 800 MADISON ST, Brooklyn, NY 11221 has 207 violations on record, with 4 currently open. Breakdown: 3 DOB Safety, 47 DOB, 5 ECB, 152 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 800 MADISON ST, Brooklyn have docketed judgments?

Yes. 800 MADISON ST, Brooklyn, NY 11221 has 19 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH), with an open balance of $200. 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 800 MADISON ST?

800 MADISON ST, Brooklyn, NY 11221 has an assessed market value of $11.1M and a total assessed value of $5M (land: $289K). Assessment data is from the NYC Department of Finance (DOF).

When was 800 MADISON ST last sold?

800 MADISON ST, Brooklyn, NY 11221 last sold for $20.7M on Nov 21, 2013. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 800 MADISON ST?

800 MADISON ST, Brooklyn, NY 11221 is zoned R6B. 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.

Who owns 800 MADISON ST?

800 MADISON ST, Brooklyn, NY 11221 is company-owned according to public records. Ownership data is from NYC Department of Finance assessment rolls. View the current owner of record and registered contacts in the full property report on RegWatch.

How do I get a full property report for 800 MADISON ST?

Search 800 MADISON ST 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 ($15, one-time) adds the complete title history, owner contacts, and a downloadable PDF.

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800 MADISON ST, Brooklyn, NY 11221 — Property Records, Permits, Violations, Tax & Zoning | RegWatch