Brooklyn

3748 Neptune Ave

Brooklyn, NY 11224Individually ownedBBL 3070031004BIN 3397663

Updated Aug 1, 2026 · 16 sources

Floors3
ClassR3
Market Value$927K

3748 NEPTUNE AVE is a property located at 3748 NEPTUNE AVE, Brooklyn, NY 11224. The building has 3 floors. The assessed market value is $927K. It last sold for $485K on Aug 6, 2021. Public records list the property as individually owned. There are 13 building permits on record (12 active). Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

31records on file

The lot at 3748 Neptune Ave rises 3 stories over Kings. It is carried on the public rolls at a market value of $927K, and assessed for tax at $55.6K. In the 19 years its record reaches back, the lot has drawn 31 separate government filings.

The documentary life of the address leans hard toward permit: 13 of its 31 records, fully 42%, fall under that one heading. Mortgage (5) and sale (4) trail well behind. No violations stand open against it today.

The pace is anything but even. The record runs hot early and quiets with age, with 2007 its single busiest year.

Read together — 42% permit, 19 years of accumulation, a parcel of Kings — these scattered records compose a portrait of the address that no single page sets out to draw.

$927K of Kings, written across 31 government filings.

Property Details

Address3748 NEPTUNE AVE, Brooklyn, NY 11224
R3
Year BuiltN/A
Floors3
Total UnitsN/A
Building AreaN/A
Lot SizeN/A
3070031004
3397663
OwnershipIndividually owned

Assessment & Sales

$927K
$56K
$10K
$485K
Last Sale DateAug 6, 2021

Building Permits

13 on record · 12 active
New BuildingDOB Legacy
SIGNED OFF
Filed Mar 1, 2011Job #302039808-01
New BuildingDOB Legacy
ISSUED
Filed Jun 29, 2009Job #302039808-01-06
New BuildingDOB Legacy
ISSUED
Filed Jun 29, 2009Job #302039808-1-6-hist
New BuildingDOB Legacy
ISSUED
Filed Oct 1, 2008Job #302039808-01-05
New BuildingDOB Legacy
ISSUED
Filed Oct 1, 2008Job #302039808-1-5-hist

+ 8 more permitsview full report

Violations

none on record

No violations found in local records.

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Frequently Asked Questions

Are there building permits at 3748 NEPTUNE AVE, Brooklyn?

Yes. 3748 NEPTUNE AVE, Brooklyn, NY 11224 has 13 building permits on record, with 12 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 Mar 1, 2011.

Does 3748 NEPTUNE AVE, Brooklyn have violations?

No violations were found in local records for 3748 NEPTUNE AVE, Brooklyn, NY 11224. Violation data is sourced from DOB (safety and legacy), HPD (housing), and ECB (environmental control).

Does 3748 NEPTUNE AVE, Brooklyn have docketed judgments?

No docketed OATH judgments were found in local records for 3748 NEPTUNE AVE, Brooklyn, NY 11224. Judgment data is sourced from NYC Office of Administrative Trials & Hearings (OATH) hearing records.

What is the property tax assessment for 3748 NEPTUNE AVE?

3748 NEPTUNE AVE, Brooklyn, NY 11224 has an assessed market value of $927K and a total assessed value of $56K (land: $10K). Assessment data is from the NYC Department of Finance (DOF).

When was 3748 NEPTUNE AVE last sold?

3748 NEPTUNE AVE, Brooklyn, NY 11224 last sold for $485K on Aug 6, 2021. Sale records are sourced from NYC ACRIS and Department of Finance rolling sales data.

Who owns 3748 NEPTUNE AVE?

3748 NEPTUNE AVE, Brooklyn, NY 11224 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 3748 NEPTUNE AVE?

Search 3748 NEPTUNE AVE 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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3748 NEPTUNE AVE, Brooklyn, NY 11224 — Property Records, Permits, Violations, Tax & Zoning | RegWatch