# 823 Classon Avenue, Prospect Heights, Brooklyn, NY 11238

BBL 3011787502 · Block 1178 · Lot 7502 · BIN 3029572  
Canonical page: https://nycpropertyfacts.com/ny/brooklyn/823-classon-avenue-3011787502  
Last updated: 2026-11-09 · Open-item counts as of 2026-11-10

Also recorded as: 823-825 Classon Ave

## Summary

823 Classon Avenue (Brooklyn, NY 11238; tax lot BBL 3011787502) is a 24-unit condominium (building class RM: condominium (subtype RM)), built around 1925, on a 6,500 sq ft lot zoned R7A. City tax records list the owner as UNAVAILABLE OWNER. As of November 10, 2026, NYC Open Data shows one DOB job with a permit issued but no sign-off, five active DOB violations (one BIS violation and four DOB NOW safety violations), one open HPD violation and six OATH tickets with an unpaid balance. There were 12 311 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, “823 Classon Avenue, Brooklyn, NY 11238 (BBL 3011787502)”, data as of 2026-11-10, https://nycpropertyfacts.com/ny/brooklyn/823-classon-avenue-3011787502. Source: NYC Open Data.

## Neighborhood

Prospect Heights: https://nycpropertyfacts.com/ny/brooklyn/11238

- Open HPD violations: https://nycpropertyfacts.com/ny/brooklyn/11238/open-hpd-violations
- Active DOB violations: https://nycpropertyfacts.com/ny/brooklyn/11238/active-dob-violations
- Active ECB violations: https://nycpropertyfacts.com/ny/brooklyn/11238/active-ecb-violations
- Open DOB jobs: https://nycpropertyfacts.com/ny/brooklyn/11238/open-dob-jobs
- Unpaid OATH tickets: https://nycpropertyfacts.com/ny/brooklyn/11238/unpaid-oath-tickets

## ZIP

Brooklyn 11238: https://nycpropertyfacts.com/ny/brooklyn/11238

## Nearby properties

Ordered by map distance among lots on this street within 40 house numbers and on this tax block within 15 lot numbers.

- 817 Classon Avenue (59 ft): https://nycpropertyfacts.com/ny/brooklyn/817-classon-avenue-3011780007
- 817 Classon Avenue (59 ft): https://nycpropertyfacts.com/ny/brooklyn/817-classon-avenue-3011787504
- 815 Classon Avenue (97 ft): https://nycpropertyfacts.com/ny/brooklyn/815-classon-avenue-3011780009
- 811 Classon Avenue (124 ft): https://nycpropertyfacts.com/ny/brooklyn/811-classon-avenue-3011780010
- 809 Classon Avenue (149 ft): https://nycpropertyfacts.com/ny/brooklyn/809-classon-avenue-3011780011
- 836 Classon Avenue (163 ft): https://nycpropertyfacts.com/ny/brooklyn/836-classon-avenue-3011770038
- 524 St Johns Place (179 ft): https://nycpropertyfacts.com/ny/brooklyn/524-st-johns-place-3011787501
- 776 Franklin Avenue (0.15 mi): https://nycpropertyfacts.com/ny/brooklyn/776-franklin-avenue-3011787503

## Open items

| Item | Count |
|---|---|
| Open DOB jobs (permit issued, not signed off) | 1 |
| Active DOB violations (BIS) | 1 |
| Active DOB safety violations (DOB NOW) | 4 |
| Active ECB violations | 0 |
| Open HPD violations | 1 |
| OATH tickets with unpaid balance | 6 |

## Lot & building

- Owner of record: UNAVAILABLE OWNER
- Building class: RM – Condominium (subtype RM)
- Year built: 1925
- Floors: 7
- Units: 24 residential / 37 total
- Lot area: 6,500 sq ft · Building area: 26,271 sq ft
- Zoning: R7A
- Source: PLUTO (Dept. of City Planning) (https://data.cityofnewyork.us/d/64uk-42ks), city dataset updated 2026-08-24; last loaded 2026-11-10

## Tax assessment

- Tax year 2027 (final roll): market value $0, assessed value $0, tax class 2
- 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.

No records found.

## 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 |
|---|---|---|---|
| 2021-04-13 | open (Permit Entire) | DOB NOW job filing B00482455-I1 (Alteration): Permit Entire — permit issued, no sign-off on record. | w9ak-ipjd |
| 2021-07-26 | n/a (Permit Issued) | DOB NOW work permit for job B00482455-I1: Structural — 8th Cycle Facade repairs to include concrete balcony floor surface repairs; EIFs Repairs; Installation of corner posts.. Issued 2021-07-26, expires 2022-07-26. | rbx6-tga4 |
| 2021-07-26 | n/a (Permit Issued) | DOB NOW work permit for job B00482455-I1: General Construction — 8th Cycle Facade repairs to include concrete balcony floor surface repairs; EIFs Repairs; Installation of corner posts.. Issued 2021-07-26, expires 2022-07-26. | rbx6-tga4 |
| 2021-06-07 | n/a (Signed-off) | DOB NOW work permit for job B00532156-I1: Sidewalk Shed — INSTALLATION OF TEMPORARY SIDEWALK SHED AS PER PLANS. NO CHANGE IN USE, EGRESS OR OCCUPANCY.. Issued 2021-06-07, expires 2022-06-07. | rbx6-tga4 |
| 2019-06-25 | n/a (ISSUED (initial)) | BIS work permit for job 340665630: Plumbing / Plumbing. Issued 2019-06-25, expires 2020-12-31. | ipu4-2q9a |
| 2019-06-21 | n/a (ISSUED (initial)) | BIS work permit for job 340665630: Equipment work / Other / general construction. Issued 2019-06-21, expires 2020-09-30. | ipu4-2q9a |
| 2015-01-23 | n/a (ISSUED (initial)) | BIS work permit for job 321063335: Alteration / Other / general construction. Issued 2015-01-23, expires 2015-05-15. | ipu4-2q9a |
| 2014-09-04 | n/a (ISSUED (initial)) | BIS work permit for job 320951911: Plumbing / Plumbing. Issued 2014-09-04, expires 2015-09-04. | ipu4-2q9a |
| 2014-08-11 | n/a (ISSUED (initial)) | BIS work permit for job 320951911: Construction equipment (scaffold, fence, shed) / Construction equipment. Issued 2014-08-11, expires 2015-08-11. | ipu4-2q9a |
| 2014-08-11 | n/a (ISSUED (initial)) | BIS work permit for job 320951911: Alteration. Issued 2014-08-11, expires 2015-08-09. | ipu4-2q9a |

## Open violations (DOB, DOB NOW safety, ECB, HPD)

status "open" = DOB violation category is ACTIVE, DOB NOW safety violation status is Active, ECB violation status is ACTIVE, or HPD violation status is Open. Dismissed, cured, waived and disputed-successfully safety violations are not open.

| Date | Status | Description | Source |
|---|---|---|---|
| 2019-05-02 | open (V-DOB VIOLATION - ACTIVE) | DOB violation (BENCH-FAILURE TO BENCHMARK NONE): FAILURE TO FILE BENCHMARKING REPORT OF ENERGY USE AS PER AD. CODE SEC. 28-309.4. Active — not recorded as resolved or dismissed. | 3h2n-5cm9 |
| 2026-09-23 | open (Active) | DOB NOW safety violation (Parking Structures), type FTF-PS-INITL, VIO-FTF-PS-INITL-202512-0183248: Failure to file parking structures compliance report by 12/31/2025 as required per 1 RCNY 103-13. Active. | 855j-jady |
| 2025-08-29 | open (Active) | DOB NOW safety violation (Elevators), type FTF-VT-PER-CO, VIO-FTF-VT-PER-202412-0003366: Violation Issued-Failure To File 2024 Periodic Inspection Report. Active. | 855j-jady |
| 2019-05-20 | open (Active) | DOB NOW safety violation (Elevators), type EVCAT5, 052019EVCAT503058: no remarks published. Active. | 855j-jady |
| 2019-05-02 | open (Active) | DOB NOW safety violation (Benchmarking - LL84), type FTF-EN-BENCH, 050219BENCH01936: no remarks published. Active. | 855j-jady |
| 2017-02-02 | open (Nov Sent Out) | HPD class C violation (Class C): § 27-2033 ADM CODE POST NOTICE, IN FORM APPROVED BY THE DEPARTMENT, STATING THE NAME AND LOCATION OF THE PERSON DESIGNATED BY THE OWNER TO HAVE KEY TO BUILDINGS HEATING SYSTEM MISSING AT PUBLIC HALL, 1st STORY. Open — not recorded as corrected. | wvxf-dwi5 |

## DOB safety violations (DOB NOW)

Active means the published violation status is Active. Dismissed, cured, waived, disputed successfully and pending dismissal are not open items.

| Issued | Status | Type | Device | Number | Remarks |
|---|---|---|---|---|---|
| 2026-09-23 | open (Active) | FTF-PS-INITL | Parking Structures | VIO-FTF-PS-INITL-202512-0183248 | Failure to file parking structures compliance report by 12/31/2025 as required per 1 RCNY 103-13 |
| 2025-08-29 | open (Active) | FTF-VT-PER-CO | Elevators | VIO-FTF-VT-PER-202412-0003366 | Violation Issued-Failure To File 2024 Periodic Inspection Report |
| 2019-05-20 | open (Active) | EVCAT5 | Elevators | 052019EVCAT503058 | — |
| 2019-05-02 | open (Active) | FTF-EN-BENCH | Benchmarking - LL84 | 050219BENCH01936 | — |

0 resolved or not active. Full list: https://nycpropertyfacts.com/api/v1/property/3011787502/violations?type=dob_safety_violation

Source: DOB Safety Violations (DOB NOW) (https://data.cityofnewyork.us/Building/DOB-Safety-Violations/855j-jady), city dataset updated 2026-11-09; last loaded 2026-11-10

## 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 |
|---|---|---|---|
| 2026-07-09 | open (HEARING COMPLETED · IN VIOLATION) | OATH ticket from Fire Department Of Nyc: CERTIFICATES OF FITNESS AND CERTIFICATES OF QUALIFICATION. Unpaid balance $375. | jz4z-kudi |
| 2024-08-30 | open (DOCKETED · DEFAULTED) | OATH ticket from Dep - Bureau Of Env. Complianc: IDLING OF MOTOR VEHICLE ENGINE MORE THAN THREE MINUTES 1ST OFF. Unpaid balance $1,300. Respondent defaulted (did not appear). | jz4z-kudi |
| 2024-07-19 | open (DEFAULTED · DEFAULTED) | OATH ticket from Dep - Bureau Of Env. Complianc: IDLING OF MOTOR VEHICLE ENGINE OVER 1MIN WHILE ADJACENT TO SCHOOL 1ST. Unpaid balance $1,300. Respondent defaulted (did not appear). | jz4z-kudi |
| 2024-05-14 | open (DEFAULTED · DEFAULTED) | OATH ticket from a city agency: charge not given. Unpaid balance $1,000. Respondent defaulted (did not appear). | jz4z-kudi |
| 2024-03-08 | open (DOCKETED · DEFAULTED) | OATH ticket from Dep - Bureau Of Env. Complianc: IDLING OF MOTOR VEHICLE ENGINE MORE THAN THREE MINUTES 1ST OFF. Unpaid balance $1,300. Respondent defaulted (did not appear). | jz4z-kudi |
| 2019-08-19 | open (DOCKETED · IN VIOLATION) | OATH ticket from Dept. Of Buildings: FAILURE TO POST OR DISTRIBUTE SAFE CONSTRUCTION BILL OF RIGHTS. Unpaid balance $741. | 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 |
|---|---|---|---|
| 2026-09-07 | closed (Closed) | 311 request to NYPD: Noise - Street/Sidewalk – Loud Music/Party. | erm2-nwe9 |
| 2026-09-07 | closed (Closed) | 311 request to NYPD: Noise - Street/Sidewalk – Loud Music/Party. | erm2-nwe9 |
| 2026-08-23 | closed (Closed) | 311 request to DOHMH: Day Care – Day Care Facility. | erm2-nwe9 |
| 2026-08-21 | closed (Closed) | 311 request to DOHMH: Day Care – Day Care Facility. | erm2-nwe9 |
| 2026-08-21 | closed (Closed) | 311 request to DOHMH: Day Care – Day Care Facility. | erm2-nwe9 |
| 2026-08-18 | closed (Closed) | 311 request to DOHMH: Day Care – Day Care Facility. | erm2-nwe9 |
| 2026-08-06 | closed (Closed) | 311 request to DOHMH: Day Care – Day Care Facility. | erm2-nwe9 |
| 2026-07-23 | closed (Closed) | 311 request to DOHMH: Indoor Air Quality – Chemical Vapors/Gases/Odors. | erm2-nwe9 |
| 2026-07-23 | closed (Closed) | 311 request to DOHMH: Indoor Air Quality – Chemical Vapors/Gases/Odors. | erm2-nwe9 |
| 2026-06-02 | closed (Closed) | 311 request to NYPD: Blocked Driveway – Partial Access. | erm2-nwe9 |
| 2026-02-11 | closed (Closed) | 311 request to NYPD: Blocked Driveway – No Access. | erm2-nwe9 |
| 2026-01-26 | closed (Closed) | 311 request to NYPD: Blocked Driveway – No Access. | 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 UNAVAILABLE OWNER. | 64uk-42ks |
| 2026-07-01 | current_registration | HPD registration contact: CorporateOwner (The Prospect Condominium), business city New York. | feu5-w2e2 |
| 2026-07-01 | current_registration | HPD registration contact: Agent Chris Swensen (Daisy Management), business city New York. | feu5-w2e2 |
| 2026-07-01 | current_registration | HPD registration contact: HeadOfficer Chris Swensen, business city New York. | feu5-w2e2 |
| 2026-07-01 | current_registration | HPD registration contact: SiteManager Chris Swensen. | feu5-w2e2 |

---

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/3011787502