Brooklyn

645 Union St

Brooklyn, NY 11215Company-ownedBBL 3004340050BIN 3414671

Updated Aug 1, 2026 · 16 sources

ClassG7
Market Value$49K

645 UNION ST is a property located at 645 UNION ST, Brooklyn, NY 11215. The assessed market value is $49K. It last sold for $2.5M on Sep 28, 2012. Public records list the property as company-owned. There are 16 building permits on record (16 active). Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

34records on file

The lot at 645 Union St holds its ground over Kings. It is carried on the public rolls at a market value of $48.9K, and assessed for tax at $22.0K. In the 59 years its record reaches back, the lot has drawn 34 separate government filings.

The documentary life of the address leans hard toward permit: 16 of its 34 records, fully 47%, fall under that one heading. Sale (5) and complaint (4) trail well behind. No 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 2015.

Read together — 47% permit, 59 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$48.9K of Kings, written across 34 government filings.

Property Details

Address645 UNION ST, Brooklyn, NY 11215
G7
Year BuiltN/A
FloorsN/A
Total UnitsN/A
Building AreaN/A
Lot SizeN/A
3004340050
3414671
OwnershipCompany-owned

Assessment & Sales

$49K
$22K
$22K
$2.5M
Last Sale DateSep 28, 2012

Building Permits

16 on record · 16 active
PlumbingDOB Legacy
ISSUED
Filed Nov 13, 2025Job #320726130-04-04
Construction EquipmentDOB Legacy
ISSUED
Filed Aug 31, 2017Job #321623016-01-01
PlumbingDOB Legacy
ISSUED
Filed Aug 31, 2017Job #320726130-04-03
AlterationDOB Legacy
ISSUED
Filed Jul 17, 2017Job #321507124-01-03
AlterationDOB Legacy
ISSUED
Filed Mar 24, 2017Job #321507124-01-02

+ 11 more permitsview full report

Violations

none on record

No violations found in local records.

Get the Complete Report for 645 UNION ST

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Frequently Asked Questions

Are there building permits at 645 UNION ST, Brooklyn?

Yes. 645 UNION ST, Brooklyn, NY 11215 has 16 building permits on record, with 16 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a Plumbing (ISSUED) filed Nov 13, 2025.

Does 645 UNION ST, Brooklyn have violations?

No violations were found in local records for 645 UNION ST, Brooklyn, NY 11215. Violation data is sourced from DOB (safety and legacy), HPD (housing), and ECB (environmental control).

Does 645 UNION ST, Brooklyn have docketed judgments?

No docketed OATH judgments were found in local records for 645 UNION ST, Brooklyn, NY 11215. Judgment data is sourced from NYC Office of Administrative Trials & Hearings (OATH) hearing records.

What is the property tax assessment for 645 UNION ST?

645 UNION ST, Brooklyn, NY 11215 has an assessed market value of $49K and a total assessed value of $22K (land: $22K). Assessment data is from the NYC Department of Finance (DOF).

When was 645 UNION ST last sold?

645 UNION ST, Brooklyn, NY 11215 last sold for $2.5M on Sep 28, 2012. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

Who owns 645 UNION ST?

645 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 645 UNION ST?

Search 645 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 adds the complete title history, owner contacts, and a downloadable PDF.

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