# 409 Classon Avenue, Brooklyn, NY 11238

BBL 3019670004 · Block 1967 · Lot 4 · BIN 3056281  
Canonical page: https://nycpropertyfacts.com/ny/brooklyn/409-classon-avenue-3019670004  
Last updated: 2026-11-03 · Open-item counts as of 2026-10-31

## Summary

409 Classon Avenue (Brooklyn, NY 11238; tax lot BBL 3019670004) is a vacant lot (building class V0: vacant land zoned residential), on a 1,587 sq ft lot zoned R6B. City tax records list the owner as RONALD KERVIS. The Department of Finance's final market value for tax year 2027 is $157,000. As of October 31, 2026, NYC Open Data shows one DOB job with a permit issued but no sign-off, eight active DOB violations, 13 active ECB violations and 10 OATH tickets with an unpaid balance. There was one 311 request in the past 12 months and no HPD complaints since 2019. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

How to cite: NYC Property Facts, “409 Classon Avenue, Brooklyn, NY 11238 (BBL 3019670004)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/409-classon-avenue-3019670004. Source: NYC Open Data.

## Open items

| Item | Count |
|---|---|
| Open DOB jobs (permit issued, not signed off) | 1 |
| Active DOB violations | 8 |
| Active ECB violations | 13 |
| Open HPD violations | 0 |
| OATH tickets with unpaid balance | 10 |

## Lot & building

- Owner of record: RONALD KERVIS
- Building class: V0 – Vacant land zoned residential
- Year built: —
- Floors: —
- Units: 0 residential / 0 total
- Lot area: 1,587 sq ft · Building area: 0 sq ft
- Zoning: R6B
- Source: PLUTO (Dept. of City Planning) (https://data.cityofnewyork.us/d/64uk-42ks), data as of 2026-11-04

## Tax assessment

- Tax year 2027 (final roll): market value $157,000, assessed value $9,420, tax class 1B
- Source: DOF Property Valuation and Assessment Data (https://data.cityofnewyork.us/d/8y4t-faws)

## Sales & deeds (ACRIS)

Deeds recorded with the City Register. amount 0 usually means a non-market transfer. lots_in_deed > 1 means the price covers several lots.

| Date | Status | Description | Source |
|---|---|---|---|
| 2000-03-07 | recorded (DEED) | DEED dated 2000-03-07 from HILL, KENNETH; HILL, ADDIE to YEARDAWN REALTY CORP, no price stated ($0). | bnx9-e6tj |
| 2000-03-07 | recorded (DEED) | DEED dated 2000-03-07 from YEAR DAWN REALTY CORP to KERVIS, RONALD, no price stated ($0). | bnx9-e6tj |

## Open DOB jobs and recent work permits

A DOB "job" is an application to do construction work. status "open" = a permit was issued but DOB has no record of final sign-off. Work permits are listed with type "work_permit" and their DOB permit status (they are not counted as open items).

| Date | Status | Description | Source |
|---|---|---|---|
| 2010-03-16 | open (PERMIT ISSUED - ENTIRE JOB/WORK) | BIS job 320136740 (A3 – Minor alteration (one type of work)): PERMIT ISSUED - ENTIRE JOB/WORK — permit issued, no sign-off on record. PROPOSED INSTALLATION OF HEAVY DUTY SIDEWALK SHED FILED FOR REMEDIAL REPAIRS AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. LIVE LOAD 300 PER SQUARE FOOT. SIDEWALK SHED SH… | ic3t-wcy2 |
| 2016-09-01 | n/a (ISSUED (initial)) | BIS work permit for job 321300953: Demolition. Issued 2016-09-01, expires 2016-11-05. | ipu4-2q9a |
| 2016-09-01 | n/a (ISSUED (initial)) | BIS work permit for job 321300953: Construction equipment (scaffold, fence, shed) / Construction equipment. Issued 2016-09-01, expires 2017-09-01. | ipu4-2q9a |
| 2016-08-31 | n/a (ISSUED (initial)) | BIS work permit for job 321300953: Construction equipment (scaffold, fence, shed) / Construction equipment. Issued 2016-08-31, expires 2017-08-31. | ipu4-2q9a |
| 2011-01-07 | n/a (ISSUED (renewal)) | BIS work permit for job 320136740: Construction equipment (scaffold, fence, shed) / Construction equipment. Issued 2011-01-07, expires 2012-01-07. | ipu4-2q9a |
| 2010-03-16 | n/a (ISSUED (initial)) | BIS work permit for job 320136740: Construction equipment (scaffold, fence, shed) / Construction equipment. Issued 2010-03-16, expires 2011-01-27. | ipu4-2q9a |

## Open violations (DOB, ECB, HPD)

status "open" = DOB violation category is ACTIVE, ECB violation status is ACTIVE, or HPD violation status is Open.

| Date | Status | Description | Source |
|---|---|---|---|
| 2015-02-11 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONE): FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION. Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2014-12-03 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONE): FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION. Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2014-09-10 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONE): FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION. Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2011-12-28 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONE): FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION. Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2010-12-02 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONE): FAILURE TO CERTIFY CORRECTION ON IMMEDIATELY HAZARDOUS (CLASS 1) ECB VIOLATION. Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2010-03-08 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (IMEGNCY-IMMEDIATE EMERGENCY ANYTHINGOPTIONAL). Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2001-08-30 | open (VW-VIOLATION WORK WITHOUT PERMIT - ACTIVE) | DOB violation (C-CONSTRUCTION OTHER OPTIONAL): WORK WITHOUT A PERMIT. WORK NOTED: INSTALLATION OF PARTITION WALLS, SUSPENDED CEILING UNFINISHED TWO PEICE BATHROOM AT CELLAR FRONT SUGGESTED REMEDY: OBTAIN A PERMIT OR RESTORE THE CELLAR TO PRIOR LEGAL CONDITION. Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2001-08-14 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (C-CONSTRUCTION OTHER OPTIONAL). Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2016-08-25 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 2: SHED PERMIT EXPIRED. NOTICED AT TIME OF INSPECTION SHED INSTALLED AT EXP#1 PERMIT EXPIRED IN 2012. REMEDY: RENEW PERMIT.. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2014-11-01 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 1: FAILURE TO MAINTIAN BLDG WALLS OR APPURTENANCES. BLDG IS IN A STATE OFTOTAL DISREPAIR, OPEN TO THE ELEMENTS & HAVING A TREE GROWING OUT OF THE 2ND FL. REMEDY: OBTAIN PERMIT & DEMOLISH BLDG.. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2013-03-21 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 2: WORK W/O A PERMIT. NOTED: AT TIME OF INSPECTION CONSTRUCTION FENCE WASINSTALLED. DOB HAS NO RECORD OF A PERMIT ON FILE. REMEDY: CONFORM TO BLDG CODE, OBTAIN A PERMIT.. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2014-09-13 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 1: FAILURE TO MAINTAIN BLDG WALLS OR APPURTENANCES BLDG IN A STATE OF TOTAL DISREPAIR,OPEN TO THE ELEMENTS @ THE 2ND FL LEVEL & HAVING A TREE GROWING OUT OF A OPEN WINDOW SPACE @ SAID 2ND FL LEVEL.REM:OBTAIN PERMI. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2011-10-08 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 1: FAILURE TO MAINTAIN EXTERIOR WALLS OR APPURTENANCES AT TIME OF INSPECTION OBSERVED AT FRONT OF PREMISES,BROWNSTONE MASONRY FACADE IS DEFECTIVE W/SECTIONS MISSING,BROKEN,CRACKED & SPALLING. OBSERVED TREE VEGITAT. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2014-06-19 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 2: WORK W/O A PERMIT EXPIRED PERMIT.SIDEWALK SHED IN PLACE @ FRONT OF PROPERTY FROM DEFECTIVE FACADE.PERMIT #320136740 EXPIRED 01-07-2012.SHED NEEDED FOR PROTECTION FROM DEFECITVE FACADE SPARLINE BROWNSTONE.REM:RE. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2013-03-21 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 2: TEMP. CONSTRUCTION EQUIPMENT ON SITE WITH EXPIRED PERMIT. NOTED:@ TIMEOF INSPECTION SIDEWALK SHED WAS ERECTED ON EXP #1. PERMIT HAS EXPIRED JOB #320136740 EXP DATE 1.7.12. REMEDY: CONFORM TO BLDG CODE, OBTAIN A. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2014-06-19 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 1: FAILURE TO MAINTAIN BLDG WALLS OR APPURTENANCES.EXTERIOR WALLS FRONT FACADE BROWNSTONE LINTELS,3RD STORY BLDG OUTWARD TREE GROWING BEHIND STONEWALL.2ND FL MIDDLE WINDOW BROWNSTONE LINTEL MISSING & ON GROUND FRO. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2016-08-25 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 2: WORK W/O PERMIT. NOTICED CONSTRUCTION FENCE INSTALLED ON SITE AT EXP31 NO PERMIT. REMEDY: OBTAIN PERMIT.. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2009-11-01 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 1: FAILURE TO MAINTAIN BLDG WALL NOTED:@ FRONT WALL THE MASONARY IS CRACKED,LOOSE,SPALLING & MISSING IN VARIOUS LOCATIONS @ TIME OF INSPECTION REMEDY:MAINTAIN EXTERIOR BLDG WALL.. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2010-05-01 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 2: FAILED TO OBTAIN A TEMPORARY CONSTRUCTION PERMIT PRIOR TO INSTALLATION /USE OF SIDEWALK SHED.REMEDY:OBTAIN TEMPORARY CONST PERMIT. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2010-08-17 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 1: FAILURE TO MAINTAIN.NOTED:FRONT EXTERIOR FACADE IN DISREPAIR-W/ SPALLING,CRACKS,MISSING PORTIONS.REMEDY:MAINTAIN FACADE.. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |
| 2012-05-20 | open (violation status ACTIVE; hearing status WRITTEN OFF) | ECB (DOB) violation, class - 2: WORK W/O A PERMIT. EXPIRED PERMIT. NOTE: SIDEWALK SHED ERECTED UNDER APPL #320136740 AND EXPIRED ON 1.7.12. REMEDY: RENEW PERMIT FORTHWITH.. Violation status (DOB): active (open; not resolved in DOB records). Hearing/penalty status: penalty written off (the city stopped trying to collect the fine; this does not mean the condition was corrected). | 6bgk-3dad |

## OATH tickets with unpaid balance or pending

status "open" = balance due > $0 after a decision (cases awaiting a hearing are "pending"). default=true means the respondent did not appear.

| Date | Status | Description | Source |
|---|---|---|---|
| 2024-07-08 | open (DEFAULTED · DEFAULTED) | OATH ticket from Pcs - Dohmh: FAIL TO ELIMINATE RODENT INFESTATION SHOWN BY ACTIVE RODENT SIGNS 1ST. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |
| 2024-07-08 | open (DEFAULTED · DEFAULTED) | OATH ticket from Pcs - Dohmh: FAIL TO ELIMINATE CONDITIONS CONDUCIVE TO RODENT-DEBRIS,VEGETATION 1ST. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |
| 2013-05-07 | open (DOCKETED · DEFAULTED) | OATH ticket from Sanitation Others: IMPROPER DISPOSAL BEDDING 1ST OFFENSE. Unpaid balance $300. Respondent defaulted (did not appear). | jz4z-kudi |
| 2013-03-20 | open (DEFAULTED · DEFAULT) | OATH ticket from a city agency: FAIL TO ELIMINATE CONDITIONS CONDUCIVE TO RODENT-DEBRIS,VEGETATION 1ST. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |
| 2013-03-20 | open (DEFAULTED · DEFAULT) | OATH ticket from a city agency: FAIL TO ELIMINATE CONDITIONS CONDUCIVE TO PESTS, GARBAGE CANS/SPILLAGE. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |
| 2011-12-22 | open (DEFAULTED · DEFAULTED) | OATH ticket from Pcs - Dohmh: FAILURE TO ELIMINATE CONDITIONS CONDUCIVE TO RODENT-HOLES AND GAPS 1ST. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |
| 2011-12-22 | open (DEFAULTED · DEFAULTED) | OATH ticket from Pcs - Dohmh: FAIL TO ELIMINATE CONDITIONS CONDUCIVE TO RODENT-DEBRIS,VEGETATION 1ST. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |
| 2011-08-10 | open (DEFAULTED · DEFAULTED) | OATH ticket from Pcs - Dohmh: FAIL TO ELIMINATE CONDITIONS CONDUCIVE TO PESTS, GARBAGE CANS SPILLAGE. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |
| 2011-08-10 | open (DEFAULTED · DEFAULTED) | OATH ticket from Pcs - Dohmh: FAILURE TO ELIMINATE CONDITIONS CONDUCIVE TO RODENT-HOLES AND GAPS 1ST. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |
| 2011-08-10 | open (DEFAULTED · DEFAULTED) | OATH ticket from Pcs - Dohmh: FAIL TO ELIMINATE CONDITIONS CONDUCIVE TO RODENT-DEBRIS,VEGETATION 1ST. Unpaid balance $600. Respondent defaulted (did not appear). | jz4z-kudi |

## Complaints (HPD since 2019, 311 last 12 months)

Complaints are reports, not violations. status mirrors the published complaint / request status.

| Date | Status | Description | Source |
|---|---|---|---|
| 2026-03-12 | closed (Closed) | 311 request to DSNY: Illegal Dumping – Removal Request. | erm2-nwe9 |

## Owners & contacts

Owner of record comes from city tax records (PLUTO) and can lag behind recent sales.

| Date | Status | Description | Source |
|---|---|---|---|
| 2026-08-24 | current | City tax records (PLUTO) list the owner as RONALD KERVIS. | 64uk-42ks |
| 2000-03-07 | recorded | Grantee (buyer) on the most recent deed (DEED, 2000-03-07). | 636b-3b5g |

---

Independent site. Data from NYC Open Data; not affiliated with the City of New York. Not a title search or official record; verify with the issuing agency. JSON: https://nycpropertyfacts.com/api/v1/property/3019670004