# 409 Knickerbocker Avenue, Brooklyn, NY 11237

BBL 3032797501 · Block 3279 · Lot 7501 · BIN 3074801  
Canonical page: https://nycpropertyfacts.com/ny/brooklyn/409-knickerbocker-avenue-3032797501  
Last updated: 2026-10-31 · Open-item counts as of 2026-10-31

## Summary

409 Knickerbocker Avenue (Brooklyn, NY 11237; tax lot BBL 3032797501) is an 8-unit condominium (building class RM: condominium (subtype RM)), built around 1931, on a 2,500 sq ft lot zoned C4-3. City tax records list the owner as BSD 409 LLC,. As of October 31, 2026, NYC Open Data shows one OATH ticket with an unpaid balance. There were five 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, “409 Knickerbocker Avenue, Brooklyn, NY 11237 (BBL 3032797501)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/409-knickerbocker-avenue-3032797501. Source: NYC Open Data.

## Open items

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

## Lot & building

- Owner of record: BSD 409 LLC,
- Building class: RM – Condominium (subtype RM)
- Year built: 1931
- Floors: 4
- Units: 8 residential / 9 total
- Lot area: 2,500 sq ft · Building area: 11,307 sq ft
- Zoning: C4-3
- Source: PLUTO (Dept. of City Planning) (https://data.cityofnewyork.us/d/64uk-42ks), data as of 2026-10-31

## 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).

No records found.

## Open violations (DOB, ECB, HPD)

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

No records found.

## 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 |
|---|---|---|---|
| 2026-07-17 | open (DEFAULTED · DEFAULTED) | OATH ticket from Fire Department Of Nyc: GENERAL MAINTENANCE. Unpaid balance $2,000. 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 |
|---|---|---|---|
| 2026-07-02 | closed (Closed) | 311 request to DSNY: Vendor Enforcement – Food Vendor. | erm2-nwe9 |
| 2026-05-15 | closed (Closed) | 311 request to DSNY: Missed Collection – Trash. | erm2-nwe9 |
| 2026-03-13 | closed (Closed) | 311 request to DSNY: Dirty Condition – Trash. | erm2-nwe9 |
| 2025-12-12 | closed (Closed) | 311 request to DSNY: Missed Collection – Trash. | erm2-nwe9 |
| 2025-12-07 | closed (Closed) | 311 request to NYPD: Illegal Parking – Double Parked Blocking Vehicle. | 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 BSD 409 LLC,. | 64uk-42ks |
| 2025-07-08 | expired_registration | HPD registration contact: HeadOfficer Sean Sedaghatpour, business city Great Neck. | feu5-w2e2 |
| 2025-07-08 | expired_registration | HPD registration contact: Agent Jacob Epstein, business city Great Neck. | feu5-w2e2 |
| 2025-07-08 | expired_registration | HPD registration contact: CorporateOwner (BSD 409 LLC), business city Great Neck. | feu5-w2e2 |
| 2025-07-08 | expired_registration | HPD registration contact: SiteManager Jose Rodriguez. | 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/3032797501