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Bronx • Library

4351 Katonah Ave

Bronx, NY 10470Company-ownedBBL 2033800054BIN 2019288
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Updated Aug 2, 2026 · 16 sources

Year Built1970
Floors1
Units1
Building Area2,520 sqft
ZoningR5B
ClassP8
Market Value$908K

4351 KATONAH AVE is a property located at 4351 KATONAH AVE, Bronx, NY 10470. It is classified as a library. The building was constructed in 1970. It has 1 floor and 1 unit. The building area is 2,520 square feet on a 3,121 sqft lot. The property is zoned R5B. The assessed market value is $908K. Public records list the property as company-owned. There are 11 building permits on record (10 active). Data sourced from NYC Department of Buildings (DOB), Housing Preservation & Development (HPD), Department of Finance (DOF), and other government agencies.

A RegWatch Dossier

25records on file

Completed in 1970, 4351 Katonah Ave rises 1 story over Bronx. Public records put it at 1 unit and 2,520 square feet of floor area, on land zoned R5B. It is carried on the public rolls at a market value of $908K, and assessed for tax at $409K. In the 53 years its record reaches back, the lot has drawn 25 separate government filings.

The documentary life of the address leans hard toward permit: 11 of its 25 records, fully 44%, fall under that one heading. Sale (4) and lien (4) trail well behind. No violations stand open against it today.

The pace is anything but even. Activity is spread across the decades, with 2000 the busiest year on file.

Read together — 44% permit, 53 years of accumulation, a parcel of Bronx — these scattered records compose a portrait of the address that no single page sets out to draw.

$908K of Bronx, written across 25 government filings.

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

Property Details

Address4351 KATONAH AVE, Bronx, NY 10470
Building TypeLibrary
P8
Year Built1970
Floors1
Total Units1
Building Area2,520 sqft
Lot Size3,121 sqft
ZoningR5B
ConditionN/A
2033800054
2019288
OwnershipCompany-owned

Assessment & Sales

$908K
$409K
$44K

Building Permits

11 on record · 10 active
General ConstructionDOB Legacy
COMPLETED
Filed May 10, 2017Job #220555735-01
View this permit's full record & inspection history →
AlterationDOB Legacy
ISSUED
Filed May 3, 2017Job #220555520-01-01
View this permit's full record & inspection history →
Alteration — Type 1DOB Legacy
PERMIT ISSUED - ENTIRE JOB/WORK
Filed May 3, 2017Est. cost $1KJob #220555520-01

NO WORK

View this permit's full record & inspection history →
Construction EquipmentDOB Legacy
ISSUED
Filed Sep 7, 2000Job #200448649-01-01

PL

View this permit's full record & inspection history →
Construction EquipmentDOB Legacy
RE-ISSUED
Filed Jul 26, 2000Job #200448649-03-01

OT

View this permit's full record & inspection history →

+ 6 more permits — view full report

Violations

none on record

No violations found in local records.

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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

When was 4351 KATONAH AVE, Bronx built?

The building at 4351 KATONAH AVE, Bronx, NY 10470 was constructed in 1970. It is classified as a library with 1 floor and 1 unit. The building area is 2,520 sqft.

Are there building permits at 4351 KATONAH AVE, Bronx?

Yes. 4351 KATONAH AVE, Bronx, NY 10470 has 11 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 (COMPLETED) filed May 10, 2017.

Does 4351 KATONAH AVE, Bronx have violations?

No violations were found in local records for 4351 KATONAH AVE, Bronx, NY 10470. Violation data is sourced from DOB (safety and legacy), HPD (housing), and ECB (environmental control).

Does 4351 KATONAH AVE, Bronx have docketed judgments?

No docketed OATH judgments were found in local records for 4351 KATONAH AVE, Bronx, NY 10470. Judgment data is sourced from NYC Office of Administrative Trials & Hearings (OATH) hearing records.

What is the property tax assessment for 4351 KATONAH AVE?

4351 KATONAH AVE, Bronx, NY 10470 has an assessed market value of $908K and a total assessed value of $409K (land: $44K). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 4351 KATONAH AVE?

4351 KATONAH AVE, Bronx, NY 10470 is zoned R5B. 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 4351 KATONAH AVE?

4351 KATONAH AVE, Bronx, NY 10470 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 4351 KATONAH AVE?

Search 4351 KATONAH 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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4351 KATONAH AVE, Bronx, NY 10470 — Property Records, Permits, Violations, Tax & Zoning | RegWatch