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840 Stafford Avenue, Staten Island — Grade D | OpenStoop

840 STAFFORD AVENUE, Staten Island

Building Health Grade: D (41/100)

Year Built: 1930 · Units: 11

840 Stafford Avenue

Staten Island 10309

D

0

D

0

Health Score

Higher is better. Based on 25 data sources across violations, complaints, permits, sales, and legal records.

Moderate Confidence

This building has significant issues — we recommend careful review

Multiple issues found. We recommend getting answers on open violations before committing.

840 Stafford Avenue is a residential building constructed in 1930 in Staten Island with 11 residential units. It has a Grade D health score, reflecting significant maintenance and compliance concerns. Our analysis reviewed 45 records across 25 public data sources, benchmarked against similar mid-sized prewar residential buildings in NYC.

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vs Neighborhood (10309)

3,536 buildings in this zip code

0th

Better than 0% of buildings in 10309

Bottom tier

Avg score: 98

WorstBest in 10309

Alerts

Hazardous ECB Violation

The Environmental Control Board identified a hazardous condition requiring immediate attention.

Score Breakdown

Living ConditionsBased on housing violations — things like heat, hot water, pests, mold

No issues

Building SafetyStructural issues, fire safety, elevator problems, code violations

21Critical

Complaint BurdenHow often residents call 311 or file complaints about this building

No issues

Management QualityHow quickly the owner fixes problems and maintains the building

No issues

Financial HealthTax liens, water debt, unpaid city charges

No issues

Legal & EnforcementCity lawsuits and legal actions against the building owner

46Poor

Maintenance HistoryBoiler, facade, and routine upkeep inspection records

No issues

Violations by Year↑ Worsening

Total: 17 violations · Peak: 4 in 2023

Event Activity by Category

Violations

17

Compliance

10

Financial

9

Permits

5

Complaints

4

Total: 45 events across 5 categories

Key Statistics

0

Housing Violations

City-documented problems with living conditions

0

Class C (Hazardous)

Immediately dangerous conditions requiring urgent repair

12

Building Violations→

Department of Buildings code violations

40.0x neighborhood avg

0

Building Complaints

Building-related 311 complaints (housing, safety, maintenance — excludes noise, parking, street)

1

Permits Issued→

Approved construction or renovation work

Near average

1930

Built 96 years ago

↓Getting worse — 4 violations this year vs 2 last year

No sale or transaction records found for this property.

No tax liens found for this property.

No litigation records found for this property.

Complete record of violations, complaints, permits, and other events for this building, newest first.

High Priority (2)

Code Violation

Jul 1, 2025• 10 months ago

ACTIVE

Boilers: FAILURE TO FILE REQUIRED ANNUAL BOILER INSPECTION REPORTS FOR LOW-PRESSURE BOILER 50000160409N0001 I — $3,125 penalty

Type: Boilers

ECB Status: ACTIVE

Severity: CLASS - 2

Penalty: $3,125

Amount Paid: $0

Balance Due: $3,125

Hearing: DEFAULT

Respondent: ON YOUR MARK INC

Law: 28-303.7 FAILURE TO FILE A COMPLETE BOILER INSPECTION REPORT.

Code Violation

Jul 1, 2025• 10 months ago

ACTIVE

Boilers: FAILURE TO FILE REQUIRED ANNUAL BOILER INSPECTION REPORTS FOR LOW-PRESSURE BOILER 50000160409N0002 I — $3,125 penalty

Type: Boilers

ECB Status: ACTIVE

Severity: CLASS - 2

Penalty: $3,125

Amount Paid: $0

Balance Due: $3,125

Hearing: DEFAULT

Respondent: ON YOUR MARK INC

Law: 28-303.7 FAILURE TO FILE A COMPLETE BOILER INSPECTION REPORT.

Low Priority (7)

Building Violation

Nov 14, 2025• 5 months ago

ACTIVE

Low Pressure Boiler: VIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTION

Type: Low Pressure Boiler

Violation #: 20064

Category: ACTIVE

Code: LBLVIO

Device #: 00160409

Issued: Nov 14, 2025

Building Violation

Nov 14, 2025• 5 months ago

ACTIVE

Low Pressure Boiler: VIOLATION ISSUED-FAILURE TO FILE 2024 EXTERNAL LOW PRESSURE INSPECTION

Type: Low Pressure Boiler

Violation #: 20063

Category: ACTIVE

Code: LBLVIO

Device #: 00160409

Issued: Nov 14, 2025

Building Violation

Sep 23, 2024• 1 year ago

ACTIVE

Low Pressure Boiler: VIOLATION ISSUED-FAILURE TO FILE 2023 EXTERNAL LOW PRESSURE INSPECTION

Type: Low Pressure Boiler

Violation #: 18623

Category: ACTIVE

Code: LBLVIO

Device #: 00160409

Issued: Sep 23, 2024

Building Violation

Sep 23, 2024• 1 year ago

ACTIVE

Low Pressure Boiler: VIOLATION ISSUED-FAILURE TO FILE 2023 EXTERNAL LOW PRESSURE INSPECTION

Type: Low Pressure Boiler

Violation #: 18622

Category: ACTIVE

Code: LBLVIO

Device #: 00160409

Issued: Sep 23, 2024

Building Violation

Jun 30, 2023• 2 years ago

ACTIVE

Low Pressure Boiler: VIOLATION ISSUED-FAILURE TO FILE 2021 EXTERNAL LOW PRESSURE INSPECTION

Type: Low Pressure Boiler

Violation #: 28635

Category: ACTIVE

Code: LBLVIO

Device #: 00160409

Issued: Jun 30, 2023

Building Violation

Jun 30, 2023• 2 years ago

ACTIVE

Low Pressure Boiler: VIOLATION ISSUED-FAILURE TO FILE 2021 EXTERNAL LOW PRESSURE INSPECTION

Type: Low Pressure Boiler

Violation #: 44401

Category: ACTIVE

Code: LBLVIO

Device #: 00160409

Issued: Jun 30, 2023

Building Violation

Apr 25, 2023• 3 years ago

V*-DOB VIOLATION - DISMISSED

Low Pressure Boiler: VIOLATION ISSUED-FAILURE TO FILE 2022 EXTERNAL LOW PRESSURE INSPECTION

Type: Low Pressure Boiler

Violation #: 25492

Category: V*-DOB VIOLATION - DISMISSED

Code: LBLVIO

Device #: 00160409

Disposition Comments: CIANOW CRM Violation Dismissed

Disposition Date: 20250822

Issued: Apr 25, 2023

Informational (7)

Tax Record

Jan 1, 2027• Today

Assessed

ON YOUR MARK INC

Year Built: 1,930

Building Class: N9

Gross Area: 4,105 sqft

Units: 11

Stories: 2

Zoning: R3X

Assessed Value: $164,700

Market Value: $366,000

Tax Record

Jan 1, 2026• 4 months ago

Assessed

ON YOUR MARK INC

Year Built: 1,930

Building Class: N9

Gross Area: 4,105 sqft

Units: 11

Stories: 2

Zoning: R3X

Assessed Value: $160,650

Market Value: $357,000

Tax Record

Jan 1, 2026• 4 months ago

Assessed

ON YOUR MARK INC

Year Built: 1,930

Building Class: N9

Gross Area: 4,105 sqft

Units: 11

Stories: 2

Zoning: R3X

Assessed Value: $160,650

Market Value: $357,000

Tax Record

Jan 1, 2025• 1 year ago

Assessed

ON YOUR MARK INC

Year Built: 1,930

Building Class: N9

Gross Area: 4,105 sqft

Units: 11

Stories: 2

Zoning: R3X

Assessed Value: $158,400

Market Value: $352,000

Tax Record

Jan 1, 2025• 1 year ago

Assessed

ON YOUR MARK INC

Year Built: 1,930

Building Class: N9

Gross Area: 4,105 sqft

Units: 11

Stories: 2

Zoning: R3X

Assessed Value: $158,400

Market Value: $352,000

Tax Record

Jan 1, 2024• 2 years ago

Assessed

ON YOUR MARK INC

Year Built: 1,930

Building Class: N9

Gross Area: 4,105 sqft

Units: 11

Stories: 2

Zoning: R3X

Assessed Value: $155,250

Market Value: $345,000

Tax Record

Jan 1, 2024• 2 years ago

Assessed

ON YOUR MARK INC

Year Built: 1,930

Building Class: N9

Gross Area: 4,105 sqft

Units: 11

Stories: 2

Zoning: R3X

Assessed Value: $155,250

Market Value: $345,000

Other Events (4)

Boiler Record

Apr 9, 2026• 1 month ago

Accepted

Boiler external (low pressure) — PEERLESS

Make: PEERLESS·Pressure: Low Pressure·Defects: No

Boiler Record

Apr 9, 2026• 1 month ago

Accepted

Boiler external (low pressure) — FEDERAL

Make: FEDERAL·Pressure: Low Pressure·Defects: Yes

Boiler Record

Aug 22, 2025• 8 months ago

Accepted

Boiler external (low pressure) — PEERLESS

Make: PEERLESS·Pressure: Low Pressure·Defects: No

Boiler Record

Aug 22, 2025• 8 months ago

Accepted

Boiler external (low pressure) — FEDERAL

Make: FEDERAL·Pressure: Low Pressure·Defects: No

Property Details

Year Built

1930

Total Units

11

Residential Units

11

Building Class

N9

Location

BBL

5068920010

Zipcode

10309

Location

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Property Owner

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This report is an informational tool based on publicly available government records and does not constitute a “consumer report” under the Fair Credit Reporting Act. Building grades are editorial opinions and should not be used as the sole basis for housing, lending, or employment decisions. Data sourced from HPD, DOB, DOF, ECB, FDNY, 311, and other NYC agencies. Report errors to data@openstoop.com. See our Terms and Privacy Policy.