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Brooklyn • Condo

670 Union St

Brooklyn, NY 11215Company-ownedBBL 3009557507BIN 3428833
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16 sources

Floors6
Units24
Building Area22,116 sqft
ZoningR6A
ClassR4
Market Value$78K

670 UNION ST is a property located at 670 UNION ST, Brooklyn, NY 11215. It is classified as a condo - residential unit in converted building. It has 6 floors and 24 units. The building area is 22,116 square feet on a 6,668 sqft lot. The property is zoned R6A. The assessed market value is $78K. It last sold for $3.9M on Apr 17, 2026. Public records list the property as company-owned. There are 53 building permits on record (13 active). There are 21 violations on record (1 currently open). 17 docketed judgments 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

273records on file

The lot at 670 Union St rises 6 stories over Kings. Public records put it at 24 units and 22,116 square feet of floor area, on land zoned R6A. It is carried on the public rolls at a market value of $78.0K, and assessed for tax at $35.1K. In the 54 years its record reaches back, the lot has drawn 273 separate government filings.

The documentary life of the address leans hard toward permit: 53 of its 273 records, fully 19%, fall under that one heading. Sale (46) and mortgage (43) trail well behind. 1 violation stands 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 2022.

On the environmental ledger, the building is benchmarked under Local Law 84, with a site energy-use intensity of 19.0 kBtu per square foot. Its operations answer for roughly 61 metric tons of CO2-equivalent a year.

Read together — 19% permit, 54 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$78.0K of Kings, written across 273 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
latest record

Property Details

Address670 UNION ST, Brooklyn, NY 11215
Building TypeCondo - Residential Unit in Converted Building
R4
Year Built0
Floors6
Total Units24
Building Area22,116 sqft
Lot Size6,668 sqft
ZoningR6A
ConditionAverage
3009557507
3428833
OwnershipCompany-owned

Assessment & Sales

$78K
$35K
$3K
$3.9M
Last Sale DateApr 17, 2026

Building Permits

53 on record · 13 active
New BuildingDOB Legacy
SIGNED OFF
Filed Feb 14, 2023Job #321384612-01

GEN. CONSTR.

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New BuildingDOB Legacy
SIGNED OFF
Filed Feb 14, 2023Job #321384612-02
View this permit's full record & inspection history →
New BuildingDOB Legacy
SIGNED OFF
Filed Feb 14, 2023Job #321384612-03

STRUCTURAL

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New BuildingDOB Legacy
SIGNED OFF
Filed Feb 14, 2023Job #321384612-04

SOE

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Alteration — Type 3DOB Legacy
SIGNED OFF
Filed Dec 8, 2022Job #321980291-01

BPP

View this permit's full record & inspection history →

+ 48 more permits — view full report

Violations

21 on record · 1 open
Judgments · 17 docketed
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Jul 31, 2023Ticket #035640872K
ALTERED CHANGED BUILDING OCCUPIED WITHOUT A VALID CERT OF OCCUPANCY
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Jul 31, 2023Ticket #035647835N
MISCELLANEOUS VIOLATIONS
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2023Ticket #035647836P
FAILURE PROVIDE SIDEWALK SHED WHERE REQUIRED
DOB summons (OATH)JUDGMENT DOCKETED
Docketed Feb 28, 2023Ticket #035647837R
CONSTRUCTION SUPERINTENDENT FAILED TO PERFORM DUTIES PER CODE
OATH summonsJUDGMENT DOCKETED
Docketed Sep 30, 2022Ticket #0214643541
FAILURE TO COMPLY WITH THE TERMS AND CONDITIONS OF DOT PERMITS

+ 12 more docketed judgments — view full report

SafetyElevator
ACTIVE
Issued Oct 2, 2026#VIO-FTF-VT-CAT1-202512-0004039

Violation Issued-Failure To File 2025 Cat1 Test Report

View this violation's full details & status history →

+ 20 more violations on record — view full report

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

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Frequently Asked Questions

Are there building permits at 670 UNION ST, Brooklyn?

Yes. 670 UNION ST, Brooklyn, NY 11215 has 53 building permits on record, with 13 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a New Building (SIGNED OFF) filed Feb 14, 2023.

Does 670 UNION ST, Brooklyn have violations?

Yes. 670 UNION ST, Brooklyn, NY 11215 has 21 violations on record, with 1 currently open. Breakdown: 1 DOB Safety, 3 DOB, 13 ECB, 4 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 670 UNION ST, Brooklyn have docketed judgments?

Yes. 670 UNION ST, Brooklyn, NY 11215 has 17 docketed judgments on record with the NYC Office of Administrative Trials & Hearings (OATH). 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 670 UNION ST?

670 UNION ST, Brooklyn, NY 11215 has an assessed market value of $78K and a total assessed value of $35K (land: $3K). Assessment data is from the NYC Department of Finance (DOF).

When was 670 UNION ST last sold?

670 UNION ST, Brooklyn, NY 11215 last sold for $3.9M on Apr 17, 2026. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 670 UNION ST?

670 UNION ST, Brooklyn, NY 11215 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.

Who owns 670 UNION ST?

670 UNION ST, Brooklyn, NY 11215 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 670 UNION ST?

Search 670 UNION 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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670 UNION ST, Brooklyn, NY 11215 — Property Records, Permits, Violations, Tax & Zoning | RegWatch