# 820 Classon Avenue, Brooklyn, NY 11238

BBL 3011770033 · Block 1177 · Lot 33 · BIN 3029556  
Canonical page: https://nycpropertyfacts.com/ny/brooklyn/820-classon-avenue-3011770033  
Last updated: 2026-11-05 · Open-item counts as of 2026-11-05

## Summary

820 Classon Avenue (Brooklyn, NY 11238; tax lot BBL 3011770033) is an 8-unit walk-up apartment building (building class C1: walk-up apartments, more than six families, no stores), built around 1920, on a 2,500 sq ft lot. City tax records list the owner as CLASSON BK DEVELOPMENT LLC; per ACRIS, a deed to this owner dated April 30, 2025 lists a price of $6,000,000. The Department of Finance's final market value for tax year 2027 is $1,632,000. As of November 5, 2026, NYC Open Data shows one DOB job with a permit issued but no sign-off, one active DOB violation, nine open HPD violations and three OATH tickets with an unpaid balance. There were three 311 requests 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, “820 Classon Avenue, Brooklyn, NY 11238 (BBL 3011770033)”, data as of 2026-11-05, https://nycpropertyfacts.com/ny/brooklyn/820-classon-avenue-3011770033. Source: NYC Open Data.

## Open items

| Item | Count |
|---|---|
| Open DOB jobs (permit issued, not signed off) | 1 |
| Active DOB violations | 1 |
| Active ECB violations | 0 |
| Open HPD violations | 9 |
| OATH tickets with unpaid balance | 3 |

## Lot & building

- Owner of record: CLASSON BK DEVELOPMENT LLC
- Building class: C1 – Walk-up apartments, more than six families, no stores
- Year built: 1920
- Floors: 6
- Units: 8 residential / 8 total
- Lot area: 2,500 sq ft · Building area: 9,915 sq ft
- Zoning: —
- Source: PLUTO (Dept. of City Planning) (https://data.cityofnewyork.us/d/64uk-42ks), data as of 2026-11-05

## Tax assessment

- Tax year 2027 (final roll): market value $1,632,000, assessed value $734,400, tax class 2B
- 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 |
|---|---|---|---|
| 2025-04-30 | recorded (DEED) | DEED dated 2025-04-30 from 820 CLASSON MANAGEMENT LLC to CLASSON BK DEVELOPMENT LLC, stated price $6,000,000. | bnx9-e6tj |
| 2018-03-26 | recorded (DEED) | DEED dated 2018-03-26 from OLFF 820 CORP to 820 CLASSON MANAGEMENT LLC, stated price $3,600,000. | bnx9-e6tj |
| 2017-11-02 | recorded (DEED) | DEED dated 2017-11-02 from OLFF, DOLORES M to OLFF 820 CORP., no price stated ($0). | bnx9-e6tj |
| 2013-09-13 | recorded (DEED) | DEED dated 2013-09-13 from HUNTER, SANDRA M; HOLMES, EUDIA to OLFF, DOLORES M, no price stated ($0). | bnx9-e6tj |
| 2006-05-15 | recorded (DEED) | DEED dated 2006-05-15 from OLFF, DOLORES M to HUNTER, SANDRA M; HOLMES, EUDIA, no price stated ($0). | bnx9-e6tj |
| 1999-01-30 | recorded (DEED) | DEED dated 1999-01-30 from OLFF, FRANCOIS A; OLFF, DELORES M to OLFF, DOLORES M, no price stated ($0). | bnx9-e6tj |
| 1977-02-18 | recorded (DEED) | DEED dated 1977-02-18 from THE CITY OF NEW YORK to OLFF FRANCOIS A; OLFF DELORES M, no price stated ($0). | bnx9-e6tj |
| 1975-06-19 | recorded (DEED) | DEED dated 1975-06-19 from THE FINANCE ADMINISTRATION OF THE CITY OF NY; COMMISSIONER OF FINANCE OF THE CITY OF NEW YORK; FINANCE ADMINISTRATOR CITY OF NY; FINANCE ADMIN OF THE CITY OF NY; FINANCE ADMIN CITY OF NEW YORK; THE FINANCE ADMIN OF THE CITY OF NY; FINANCE ADMIN OF THE CITYO FNY; FINANCE ADMIN OF THE CITY OF NEW YORK; FINANCE ADMIN OF CITY NY; FINANCE ADMINIST OF THE CITY OF NEW YORK; FINANCE ADMINISTRATOR OF CITY OF NY; FINANCE ADMINISTRATION CITY OF NEW YORK; THE CITY OF NEW YORK (FINANCE OF ADMINISTRATION); FINANCE ADMN OF THE CITY OF NY; FIN ADMIN; FINANCE ADMINISTRATION OF THE CITY OF NEW YORK; FINANCE ADMINISTRATION OF THE CITY OF NY; FINANCE ADMINO F THE CITY OF NY; FINANCE ADMIN OF CITY OFN Y; FINANCE ADMIN OF C NY; FINANCEADMIN CITY OF NY; FINANCE ADMINIST CITY OF NEW YORK; FINANCE ADMIN OF CITY OF NEW YORK; FINANCE ADIM OF CITY OF NY; FINANCE ADMIN OF THE CITY O FNY; THE FINANCE ADMIN CITY OF NY; COMMISSIONER OF FINANCE; FIN ADMIN OF THE CITY OF NY; FINANCE ADMINISTRATOR OF THE CITY OF N Y; FIANANCE ADMIN CITY OF NY; FINANCE ADMIN OF THE CITY OF N Y; FIN ADMIN OF CITY OF NY; FIN ADMIN OF CITY NY; FINANCE ADMINISTRATOR OF THE CITY OF NY; FINANCE ADMIN THE CITY OF NEW YORK; FINANCE ADMIN CITY OF NY; FINANCE ADMINIS OF THE CITY OF NY; FINANCE ADMIN CITY OFNY; FINANCE ADMIN CITY; CITY OF NY; FINANCE ADMIN OF CITY OF NY; FINANCE ADMIN; FINANCE ADMINISTRATORS OF THE CITY OF NEW YORK; FINANCE ADMINSITRATOR OF THE CITY OF NEW YORK; FINANCE ADMIN CITY OF N Y; FINANCE ADMIN-CITY OF NY; FINANCE ADMININSTRATOR OF THE CITY OF NEW YORK; COMMISONER OF FINANCE OF N Y; FINANCE ADMIN OF CITY OF N Y; FINANCE ADMINSTRATOR OF THE CITY OF NEW YORK; FINANCE ADMINISTRATOR THE CITY OF NY; FINANCE ADMINISTRATOR OF THE CITY OF NEW YORK; FINANCE ADMINISTORATOR OF THE CITY OF NY; FINANCE ADMINISTRATOR THE CITY OF NEW YORK; FINANCE ADMIN OF THE CITY OF NEWY ORK; FINANCE ADMIN CITY NY; FINANCE ADMINI CITY OF NY to THE CITY OF NEW YORK; CITY OF N Y; `THE CITY OF N Y; THE CITY OF NE WYORK; THE CITY OF NEW ;YORK; THE CITY OF N Y; CITY OF NEW  YORK; THE CITY OF NY; CITY OF NY; THE CITY O FNEW YORK; CITY OF NEW YORK, no price stated ($0) for a deed covering 2118 lots. | bnx9-e6tj |
| 1970-02-03 | recorded (DEED) | DEED dated 1970-02-03 from DISCOUNT REALTY CORP to JW REALTY CORP, 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 |
|---|---|---|---|
| 2018-04-23 | open (PERMIT ISSUED - PARTIAL JOB) | BIS job 340599873 (A2 – Alteration with multiple work types (no change to use/occupancy)): PERMIT ISSUED - PARTIAL JOB — permit issued, no sign-off on record. PROPOSED INTERIOR RENOVATION OF EXISTING 4 STORY AND 7 APT UNITS. REPLACE PLUMBING FIXTURES IN KITCHENS AND BATHROOMS, AND INSTALL NEW BOILERS AS PER PLANS FILED HEREWITH. NO CHANGE IN USE, EGRESS OR… | ic3t-wcy2 |
| 2024-10-30 | n/a (ISSUED (renewal)) | BIS work permit for job 321383150: Alteration. Issued 2024-10-30, expires 2025-03-08. | ipu4-2q9a |
| 2024-05-09 | n/a (ISSUED (renewal)) | BIS work permit for job 321383150: Plumbing / Plumbing. Issued 2024-05-09, expires 2025-05-09. | ipu4-2q9a |
| 2023-12-28 | n/a (Signed-off) | DOB NOW work permit for job B00147762-I1: Construction Fence — INSTALLATION OF TEMPORARY PLYWOOD FENCE AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. TEMPORARY PLYWOOD FENCE SHALL COMPLY WITH CH…. Issued 2023-12-28, expires 2024-12-28. | rbx6-tga4 |
| 2023-12-08 | n/a (ISSUED (renewal)) | BIS work permit for job 321383150: Alteration. Issued 2023-12-08, expires 2024-07-12. | ipu4-2q9a |
| 2022-05-06 | n/a (Signed-off) | DOB NOW work permit for job B00147762-I1: Construction Fence — INSTALLATION OF TEMPORARY PLYWOOD FENCE AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. TEMPORARY PLYWOOD FENCE SHALL COMPLY WITH CH…. Issued 2022-05-06, expires 2023-05-06. | rbx6-tga4 |
| 2021-04-12 | n/a (ISSUED (renewal)) | BIS work permit for job 321383150: Alteration. Issued 2021-04-12, expires 2022-02-18. | ipu4-2q9a |
| 2021-03-17 | n/a (Signed-off) | DOB NOW work permit for job B00306541-I1: Sidewalk Shed — INSTALLATION OF HEAVY DUTY SIDEWALK SHED AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. SIDEWALK SHED SHALL COMPLY WITH CHAPTER 33 …. Issued 2021-03-17, expires 2022-03-17. | rbx6-tga4 |
| 2021-01-15 | n/a (Signed-off) | DOB NOW work permit for job B00147762-I1: Construction Fence — INSTALLATION OF TEMPORARY PLYWOOD FENCE AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. TEMPORARY PLYWOOD FENCE SHALL COMPLY WITH CH…. Issued 2021-01-15, expires 2022-01-15. | rbx6-tga4 |
| 2020-10-23 | n/a (RE-ISSUED (renewal)) | BIS work permit for job 321383150: Alteration. Issued 2020-10-23, expires 2021-04-01. | ipu4-2q9a |
| 2020-10-13 | n/a (ISSUED (renewal)) | BIS work permit for job 321383150: Alteration. Issued 2020-10-13, expires 2020-11-05. | ipu4-2q9a |
| 2020-10-01 | n/a (ISSUED (renewal)) | BIS work permit for job 321383150: Alteration. Issued 2020-10-01, expires 2020-11-05. | ipu4-2q9a |
| 2020-09-23 | n/a (ISSUED (renewal)) | BIS work permit for job 321383150: Alteration. Issued 2020-09-23, expires 2020-11-05. | ipu4-2q9a |
| 2020-09-22 | n/a (Signed-off) | DOB NOW work permit for job B00387163-I1: Supported Scaffold — MEDIUM DUTY PIPE SCAFFOLDING INSTALLED ON NEEDLE BEAM PLATFORM AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. PIPE SCAFFOLD AND NEE…. Issued 2020-09-22, expires 2021-02-04. | rbx6-tga4 |
| 2020-07-14 | n/a (ISSUED (renewal)) | BIS work permit for job 321383150: Alteration. Issued 2020-07-14, expires 2020-11-05. | ipu4-2q9a |
| 2020-02-07 | n/a (Signed-off) | DOB NOW work permit for job B00306541-I1: Sidewalk Shed — INSTALLATION OF HEAVY DUTY SIDEWALK SHED AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. SIDEWALK SHED SHALL COMPLY WITH CHAPTER 33 …. Issued 2020-02-07, expires 2021-02-04. | rbx6-tga4 |
| 2020-02-07 | n/a (Signed-off) | DOB NOW work permit for job B00306552-I1: Supported Scaffold — INSTALLATION OF MEDIUM DUTY PIPE SCAFFOLDING AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. PIPE SCAFFOLDING SHALL COMPLY WITH CHAP…. Issued 2020-02-07, expires 2021-02-04. | rbx6-tga4 |
| 2020-01-27 | n/a (ISSUED (initial)) | BIS work permit for job 321383150: Plumbing / Plumbing. Issued 2020-01-27, expires 2021-01-26. | ipu4-2q9a |
| 2020-01-22 | n/a (ISSUED (initial)) | BIS work permit for job 321383150: Alteration. Issued 2020-01-22, expires 2020-11-05. | ipu4-2q9a |
| 2020-01-10 | n/a (Signed-off) | DOB NOW work permit for job B00147762-I1: Construction Fence — INSTALLATION OF TEMPORARY PLYWOOD FENCE AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. TEMPORARY PLYWOOD FENCE SHALL COMPLY WITH CH…. Issued 2020-01-10, expires 2021-01-09. | rbx6-tga4 |

Showing 20 of 26. Full list: https://nycpropertyfacts.com/api/v1/property/3011770033/permits

## 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 |
|---|---|---|---|
| 1993-08-16 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (LL6291-LOCAL LAW 62/91 - BOILERS BOILER REQUIRED). Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2026-05-04 | open (Nov Sent Out) | HPD class A violation (Class A): (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.. Open — not recorded as corrected. | wvxf-dwi5 |
| 2025-11-20 | open (Info Nov Sent Out) | HPD class I violation (Class I): §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 PREMIS…. Open — not recorded as corrected. | wvxf-dwi5 |
| 2025-06-09 | open (Nov Sent Out) | HPD class A violation (Class A): (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.. Open — not recorded as corrected. | wvxf-dwi5 |
| 2024-11-29 | open (Info Nov Sent Out) | HPD class I violation (Class I): §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 PREMIS…. Open — not recorded as corrected. | wvxf-dwi5 |
| 2024-04-09 | open (Nov Sent Out) | HPD class A violation (Class A): (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.. Open — not recorded as corrected. | wvxf-dwi5 |
| 2023-11-22 | open (Info Nov Sent Out) | HPD class I violation (Class I): §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 PREMIS…. Open — not recorded as corrected. | wvxf-dwi5 |
| 2023-03-22 | open (Nov Sent Out) | HPD class A violation (Class A): (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.. Open — not recorded as corrected. | wvxf-dwi5 |
| 2022-02-23 | open (Nov Sent Out) | HPD class A violation (Class A): (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.. Open — not recorded as corrected. | wvxf-dwi5 |
| 2021-04-07 | open (Nov Sent Out) | HPD class A violation (Class A): (A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.. Open — not recorded as corrected. | wvxf-dwi5 |

## 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 |
|---|---|---|---|
| 2024-11-01 | 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 |
| 2023-09-08 | 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 |
| 2019-07-10 | open (DOCKETED · DEFAULTED) | OATH ticket from Sanitation Others: FAILURE TO CLEAN 18 INCHES INTO STREET. Unpaid balance $300. 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 |
|---|---|---|---|
| 2026-01-07 | closed (Closed) | 311 request to DSNY: Dirty Condition – Trash. | erm2-nwe9 |
| 2025-12-16 | closed (Closed) | 311 request to DSNY: Snow or Ice – Sidewalk. | erm2-nwe9 |
| 2025-12-15 | closed (Closed) | 311 request to DSNY: Snow or Ice – Sidewalk. | 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 CLASSON BK DEVELOPMENT LLC. | 64uk-42ks |
| 2025-04-30 | recorded | Grantee (buyer) on the most recent deed (DEED, 2025-04-30). | 636b-3b5g |
| 2022-11-07 | expired_registration | HPD registration contact: SiteManager Yisroel Kanar. | feu5-w2e2 |
| 2022-11-07 | expired_registration | HPD registration contact: HeadOfficer Yehuda Cohen, business city Brooklyn. | feu5-w2e2 |
| 2022-11-07 | expired_registration | HPD registration contact: Agent Yisroel Kanar (820 CLASSON MANAGEMENT LLC), business city Brooklyn. | feu5-w2e2 |
| 2022-11-07 | expired_registration | HPD registration contact: CorporateOwner (820 CLASSON MANAGEMENT LLC), business city Brooklyn. | feu5-w2e2 |

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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/3011770033