Staten Island • Two Family Dwelling

521 Liberty Ave

Staten Island, NY 10305BBL 5034720068BIN 5129458

Updated Aug 1, 2026 · 16 sources

Year Built1999
Floors3
Units2
Building Area2,050 sqft
ZoningR3-1
ClassB9
Market Value$686K

521 LIBERTY AVE is a property located at 521 LIBERTY AVE, Staten Island, NY 10305. It is classified as a two family dwelling - miscellaneous. The building was constructed in 1999. It has 3 floors and 2 units. The building area is 2,050 square feet on a 1,566 sqft lot. The property is zoned R3-1. The assessed market value is $686K. There are 11 building permits on record (10 active). There are 1 violation 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

18records on file

Completed in 1999, 521 Seaview Ave rises 3 stories over Richmond. Public records put it at 2 units and 2,050 square feet of floor area, on land zoned R3-1. It is carried on the public rolls at a market value of $686K, and assessed for tax at $41.2K. In the 27 years its record reaches back, the lot has drawn 18 separate government filings.

The documentary life of the address leans hard toward permit: 11 of its 18 records, fully 61%, fall under that one heading. Lien (4) and violation (1) 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 1999 its single busiest year.

Read together — 61% permit, 27 years of accumulation, a parcel of Richmond — these scattered records compose a portrait of the address that no single page sets out to draw.

$686K of Richmond, written across 18 government filings.

Property Details

Address521 LIBERTY AVE, Staten Island, NY 10305
Building TypeTwo Family Dwelling - Miscellaneous
B9
Year Built1999
Floors3
Total Units2
Building Area2,050 sqft
Lot Size1,566 sqft
ZoningR3-1
ConditionAverage
5034720068
5129458

Assessment & Sales

$686K
$41K
$4K

Building Permits

11 on record · 10 active
Alteration — Type 2DOB Legacy
SIGNED OFF
Filed Nov 21, 2005Est. cost $500Job #500753650-01
PlumbingDOB Legacy
ISSUED
Filed Apr 6, 2005Job #500753650-01-01
PlumbingDOB Legacy
ISSUED
Filed Apr 6, 2005Job #500753650-1-1-hist
New BuildingDOB Legacy
ISSUED
Filed Feb 13, 2001Job #500208955-01-04
New BuildingDOB Legacy
ISSUED
Filed Feb 13, 2001Job #500208955-1-4-hist

+ 6 more permitsview full report

Violations

1 on record · none currently open
HPDClass I
VIOLATION DISMISSED
Issued Nov 21, 2022#15576122

§27-2107 ADM CODE OWNER FAILED TO FILE A VALID REGISTRATION STATEMENT WITH THE DEPARTMENT AS REQUIRED BY ADM CODE §27-2097 AND IS THEREFORE SUBJECT TO CIVIL PENALTIES, PROHIBITED FROM CERTIFYING VIOLATIONS, AND DENIED THE RIGHT TO RECOVER POSSESSION OF PREMISES FOR NONPAYMENT OF RENT UNTIL A VALID REGISTRATION STATEMENT IS FILED.

View this violation's full details & status history →

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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 521 LIBERTY AVE, Staten Island built?

The building at 521 LIBERTY AVE, Staten Island, NY 10305 was constructed in 1999. It is classified as a two family dwelling - miscellaneous with 3 floors and 2 units. The building area is 2,050 sqft.

Are there building permits at 521 LIBERTY AVE, Staten Island?

Yes. 521 LIBERTY AVE, Staten Island, NY 10305 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 Alteration — Type 2 (SIGNED OFF) filed Nov 21, 2005.

Does 521 LIBERTY AVE, Staten Island have violations?

Yes. 521 LIBERTY AVE, Staten Island, NY 10305 has 1 violation on record, with 0 currently open. Breakdown: 1 HPD. Sources: NYC DOB, HPD, and ECB/OATH.

Does 521 LIBERTY AVE, Staten Island have docketed judgments?

No docketed OATH judgments were found in local records for 521 LIBERTY AVE, Staten Island, NY 10305. Judgment data is sourced from NYC Office of Administrative Trials & Hearings (OATH) hearing records.

What is the property tax assessment for 521 LIBERTY AVE?

521 LIBERTY AVE, Staten Island, NY 10305 has an assessed market value of $686K and a total assessed value of $41K (land: $4K). Assessment data is from the NYC Department of Finance (DOF).

What is the zoning for 521 LIBERTY AVE?

521 LIBERTY AVE, Staten Island, NY 10305 is zoned R3-1. 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.

How do I get a full property report for 521 LIBERTY AVE?

Search 521 LIBERTY 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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521 LIBERTY AVE, Staten Island, NY 10305 — Property Records, Permits, Violations, Tax & Zoning | RegWatch