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Brooklyn • Condo

845 Union St

Brooklyn, NY 11215Individually ownedBBL 3009547501BIN 3019896
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Updated Aug 1, 2026 · 16 sources

Year Built1928
Floors7
Units145
Building Area17,698 sqft
ZoningR6A
ClassR0
Market Value$17K

845 UNION ST is a property located at 845 UNION ST, Brooklyn, NY 11215. It is classified as a condo - residential unit. The building was constructed in 1928. It has 7 floors and 145 units. The building area is 17,698 square feet on a 5,975 sqft lot. The property is zoned R6A. The assessed market value is $17K. It last sold for $130K on Jun 12, 2026. Public records list the property as individually owned. There are 13 building permits on record (10 active). There are 44 violations on record (0 currently open). Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

472records on file

Completed in 1928, 845 Union St rises 7 stories over Kings. Public records put it at 145 units and 17,698 square feet of floor area, on land zoned R6A. It is carried on the public rolls at a market value of $17.4K, and assessed for tax at $7.8K. In the 41 years its record reaches back, the lot has drawn 472 separate government filings.

The documentary life of the address leans hard toward sale: 313 of its 472 records, fully 66%, fall under that one heading. Violation (44) and mortgage (27) trail well behind. No violations stand open against it today.

The pace is anything but even. Activity is spread across the decades, with 1987 the busiest year on file.

On the environmental ledger, the building is benchmarked under Local Law 84, with a site energy-use intensity of 10.2 kBtu per square foot. Its operations answer for roughly 31 metric tons of CO2-equivalent a year.

Read together — 66% sale, 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.

66% of every record here performs the same act: sale.

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

Property Details

Address845 UNION ST, Brooklyn, NY 11215
Building TypeCondo - Residential Unit
R0
Year Built1928
Floors7
Total Units145
Building Area17,698 sqft
Lot Size5,975 sqft
ZoningR6A
ConditionAverage
3009547501
3019896
OwnershipIndividually owned

Assessment & Sales

$17K
$8K
$1K
$130K
Last Sale DateJun 12, 2026

Building Permits

13 on record · 10 active
General ConstructionDOB NOW
LOC ISSUED
Filed Dec 26, 2025Est. cost $200KJob #B01207395-I1
View this permit's full record & inspection history →
Suspended ScaffoldDOB NOW
PERMIT ISSUED
Filed Aug 20, 2025Job #B01251758-I1

Initial Permit

View this permit's full record & inspection history →
General ConstructionDOB NOW
PERMIT ENTIRE
Filed Aug 20, 2025Job #B01251758-I1
View this permit's full record & inspection history →
ElectricalDOB NOW
COMPLETE
Filed Jul 7, 2025Job #B01251803-I1-EL

provide and install temporary power for scaffold crew. 1 30amp, 4 20amp circuits 1 single phase 12c panel

View this permit's full record & inspection history →
StructuralDOB NOW
SIGNED-OFF
Filed May 29, 2025Est. cost $200KJob #B01207395-I1

Initial Permit

View this permit's full record & inspection history →

+ 8 more permits — view full report

Violations

44 on record · none currently open
DOB LegacyE
RESOLVED
Issued Nov 22, 2019#2425771
View this violation's full details & status history →
DOB LegacyE
RESOLVED
Issued Nov 22, 2019#2425772
View this violation's full details & status history →
DOB LegacyEnergy Benchmarking
DISMISSED
Issued May 2, 2019#2359945

FAILURE TO FILE BENCHMARKING REPORT OF ENERGY USE AS PER AD. CODE SEC. 28-309.4

View this violation's full details & status history →
DOB LegacyE
RESOLVED
Issued Nov 13, 2017#2221641
View this violation's full details & status history →
DOB LegacyE
RESOLVED
Issued Oct 3, 2016#2089680
View this violation's full details & status history →

+ 39 more violations on record — view full report

Get the Complete Report for 845 UNION 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 845 UNION ST, Brooklyn built?

The building at 845 UNION ST, Brooklyn, NY 11215 was constructed in 1928. It is classified as a condo - residential unit with 7 floors and 145 units. The building area is 17,698 sqft.

Are there building permits at 845 UNION ST, Brooklyn?

Yes. 845 UNION ST, Brooklyn, NY 11215 has 13 building permits on record, with 10 currently active. Permits are sourced from the NYC Department of Buildings (DOB Legacy and DOB NOW systems). The most recent permit is a General Construction (LOC ISSUED) filed Dec 26, 2025.

Does 845 UNION ST, Brooklyn have violations?

Yes. 845 UNION ST, Brooklyn, NY 11215 has 44 violations on record, with 0 currently open. Breakdown: 28 DOB, 16 ECB. Sources: NYC DOB, HPD, and ECB/OATH.

Does 845 UNION ST, Brooklyn have docketed judgments?

No docketed OATH judgments were found in local records for 845 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 845 UNION ST?

845 UNION ST, Brooklyn, NY 11215 has an assessed market value of $17K and a total assessed value of $8K (land: $1K). Assessment data is from the NYC Department of Finance (DOF).

When was 845 UNION ST last sold?

845 UNION ST, Brooklyn, NY 11215 last sold for $130K on Jun 12, 2026. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

What is the zoning for 845 UNION ST?

845 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 845 UNION ST?

845 UNION ST, Brooklyn, NY 11215 is individually 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 845 UNION ST?

Search 845 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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845 UNION ST, Brooklyn, NY 11215 — Property Records, Permits, Violations, Tax & Zoning | RegWatch