8401 3rd Avenue, Brooklyn, NY 11209
BBL 3060250010 (Borough 3, Block 6025, Lot 10) · BIN 3152747, 3340020 · Last updated:
Also recorded in city data as: 304 84 St · 308 84 St
Summary · as of October 31, 2026
8401 3rd Avenue (Brooklyn, NY 11209; tax lot BBL 3060250010) is a 6-unit mixed-use building with apartments and ground-floor commercial space (building class S9: mixed-use: dwelling with stores or offices, miscellaneous), built around 1923, on a 1,760 sq ft lot zoned R6B. City tax records list the owner as 304-308 REALTY. The Department of Finance's final market value for tax year 2027 is $1,098,000. As of October 31, 2026, NYC Open Data shows two DOB jobs with a permit issued but no sign-off, two active DOB violations, six open HPD violations and one OATH ticket with an unpaid balance. There were two 311 requests in the past 12 months and four HPD complaints since 2019. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)
- Owner of record
- 304-308 REALTY
- Building class
- S9 · Mixed-use: dwelling with stores or offices, miscellaneous
- Year built · units
- 1923 · 6 res.
- Lot area · zoning
- 1,760 sq ft · R6B
- Market value (DOF)
- $1,098,000 FY2027
- Last priced deed
- —
- BBL
- 3060250010
- BIN
- 3152747, 3340020
- 2Open DOB jobs (permit issued, no sign-off)
- 2Active DOB violations
- 0Active ECB violations
- 6Open HPD violations
- 1OATH tickets with unpaid balance
How to cite: NYC Property Facts, “8401 3rd Avenue, Brooklyn, NY 11209 (BBL 3060250010)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/8401-3rd-avenue-3060250010. Source: NYC Open Data.
Lot & building
Basic facts about the tax lot and building from the city’s PLUTO database.
- Owner (as listed by the city)
- 304-308 REALTYThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
- Building class
- S9 – Mixed-use: dwelling with stores or offices, miscellaneousThe Department of Finance’s category for what kind of building this is.
- Land use
- Mixed residential & commercialCity Planning’s broad category of how the lot is used.
- Year built
- 1923Often an estimate for older buildings.
- Floors
- 4
- Units
- 6 residential / 8 totalResidential units are apartments; total includes stores and offices.
- Buildings on lot
- 2
- Lot size
- 1,760 sq ft (22 ft × 80 ft)
- Building floor area
- 6,512 sq ft (incl. 1,760 sq ft commercial)
- Zoning
- R6B, C2-3, BRThe zoning district sets what can be built and used here. Residential district; the overlay (C1/C2…) allows local retail on residential blocks.
- Built vs. allowed density (FAR)
- 3.70 built / 2.00 max residentialFloor Area Ratio = building floor area ÷ lot area. If built FAR is below the maximum, zoning may allow more floor area (other rules apply).
- Identifiers
- BBL 3060250010 (Borough 3, Block 6025, Lot 10) · BIN 3152747, 3340020BBL identifies the tax lot; BIN identifies each building (from DOB/HPD/footprint records).
Agency lookups: DOB BIS · ZoLa (zoning map) · ACRIS
Source: PLUTO (Dept. of City Planning) — city dataset updated 2026-08-24; data as of 2026-11-01; Building Footprints — city dataset updated 2026-10-25; data as of 2026-11-01
Tax assessment
How the Department of Finance values this lot for property tax.
- Market value (tax year 2027, final roll)
- $1,098,000The Department of Finance’s estimate of value for tax purposes. It is not an appraisal and is often far from the sale price.
- Assessed value
- $494,100The portion of market value that taxes are calculated on (capped by law for small homes).
- Taxable value (final)
- $321,555Assessed value minus any exemptions.
- Tax class
- Tax class 2B – residential rental, 7–10 units
| Tax year | Roll | Market value | Assessed value | Tax class |
|---|---|---|---|---|
| 2027 | Final | $1,098,000 | $494,100 | 2B |
| 2026 | Final | $915,000 | $411,750 | 2B |
| 2025 | Final | $1,084,000 | $487,800 | 2B |
Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-01
Sales & deed history 5
Deeds recorded with the City Register (ACRIS). A deed transfers ownership. A $0 or very low price usually means a transfer between related parties, an estate, or a refinance-related transfer, not a market sale. This is not a title search; mortgages, liens and other documents are not shown.
| Date | Type | Price | Seller (grantor) | Buyer (grantee) | Doc ID |
|---|---|---|---|---|---|
| 2001-11-15 | DEED | $0 / not stated | Leonardos, Mihail G; Leonardos, Dimitra | 304-308 Realty Llc | FT_3450007933045 |
| 1979-04-09 | DEED | $0 / not stated | Nikolakakos Demetrios | Leonardos Dimitra; Leonardos Mihail G | BK_7930106500222 |
| 1976-05-27 | DEED | $0 / not stated | Nikolakakos Demetrios; Lambrakos Andreas | Nikolakakos Demetrios | BK_7630084900835 |
| 1972-09-29 | DEED | $0 / not stated | Mafoud Tony J; Rodriguez Eloy | Nikolakakos Demetrios; Lambrakos Andreas | BK_7230058500227 |
| 1971-04-12 | DEED | $0 / not stated | Witek Rosalia; Witch Rose | Mafoud Tony J; Rodriguez Eloy | BK_7130047501543 |
Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-01; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-01; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-01
DOB job filings 2 open of 2
A “job” is an application to the Department of Buildings to do construction work. A job marked Permitted, not signed off had a work permit issued but the city has no record of final sign-off (inspection/completion). Old jobs left in this state are common and appear in buyer and lender due diligence; the work may or may not have been done.
| Status | Job # | Type | Filed | Est. cost |
|---|---|---|---|---|
| Permitted, not signed off PERMIT ISSUED - ENTIRE JOB/WORK · 2018-11-17 | 340646554 BIS | A3 – Minor alteration (one type of work) | 2018-11-14 | $31,500 |
| Permitted, not signed off Permit Entire · 2020-12-28 | B00094836-I1 DOB NOW | Alteration | 2018-11-07 | $7,000 |
Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-10-31; data as of 2026-11-01; DOB Job Application Filings (BIS) — city dataset updated 2026-10-30; data as of 2026-10-31
Work permits 2
Individual permits issued under DOB jobs (one job can have several permits, e.g. plumbing and construction). Permit expiration alone does not mean the job was completed or signed off.
| Issued | Expires | Job # | Work | Permit status |
|---|---|---|---|---|
| 2018-11-17 | 2019-05-08 | 340646554 BIS | Alteration / Other / general construction | ISSUED (initial) |
| 2018-11-08 | 2019-09-19 | B00094836-I1 DOB NOW | Sidewalk Shed PROPOSED INSTALLATION OF HEAVY DUTY SIDEWALK SHED FOR REMEDIAL REPAIRS AS PER PLANS. NO CHANGE IN USE OCCUPANCY OR EGRESS UNDER THIS APPLICATION. LIVE LOAD 300 | Permit Issued |
Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-10-31; data as of 2026-11-01; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31
DOB violations 2 active of 2
Violations issued by the Department of Buildings for building-code or zoning conditions. Active means DOB has not recorded the violation as resolved or dismissed. Many active DOB violations are old (e.g. elevator or boiler inspection paperwork).
| Status | Issued | Type | Description | Number |
|---|---|---|---|---|
| Active V-DOB VIOLATION - ACTIVE | 2018-04-06 | LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED | VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2016 INSPECTION REPORT | V040618LBLVIO07556 |
| Active V-DOB VIOLATION - ACTIVE | 2014-05-15 | LBLVIO-LOW PRESSURE BOILER BOILER REQUIRED | VIOLATION ISSUED FOR FAILURE TO FILE ANNUAL BOILER 2012 INSPECTION REPORT | V051514LBLVIO11402 |
Source: DOB Violations — city dataset updated 2026-10-31; data as of 2026-11-01
ECB violations (DOB) 0 active of 0
DOB violations that go to a hearing at OATH (formerly the Environmental Control Board) and can carry fines. Active or Resolved follows the DOB violation status field. The hearing status is about the hearing and its penalty: written off means the city stopped collecting the fine, not that the condition was corrected. A balance due is a fine the city says is unpaid.
No records found in this dataset for this lot.
Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-11-01
OATH tickets (all agencies) 1 unpaid of 21
Summonses heard at the Office of Administrative Trials and Hearings, from agencies like Sanitation, Buildings, Fire and Health, linked to this lot’s block and lot. Default means the respondent did not appear at the hearing, which typically results in the maximum penalty. Tickets may be issued to tenants or businesses at the address, not just the owner. DOB ECB tickets appear here too.
| Status | Date | Agency | Charge | Respondent | Imposed / paid / balance | Ticket # |
|---|---|---|---|---|---|---|
| Unpaid balance Default DOCKETED · DEFAULTED | 2026-03-25 | Dept Of Transportation | OP OF A S W CAFE RDWY CAFE W O A LICENSE REVOC CONSENT 1ST OFFENSE | CAFFE CAFE | $500 / $0 / $500 | 0221091961 |
| No balance due Default PAID IN FULL · DEFAULTED | 2024-10-25 | Sanitation Others | IMPROPER RECEPTACLE ALL BUSINESSES 1ST | CAFFE CAFE | $80 / $80 / $0 | 048743224X |
| No balance due PAID IN FULL | 2024-09-27 | Sanitation Others | STORAGE OF RECEPTACLES PLACED OUT PRIOR TO 8PM WITHOUT A RECEPTACLE | 304-308 REALTY | $50 / $50 / $0 | 048521683L |
| No balance due PAID IN FULL | 2021-07-10 | Dos - Enforcement Agents | FAILURE TO PROPERLY PUT RECYCS OUT FOR COLLECTION 1TO8DWELLING UNITS | 304-308 REALTY | $25 / $25 / $0 | 046946386X |
| No balance due WRITTEN OFF · WRITTEN OFF | 2016-07-21 | Dos - Enforcement Agents | SIDEWALK OBSTRUCTION | NANCE CORP | $300 / $50 / $0 | 041419992J |
| No balance due PAID IN FULL · IN VIOLATION | 2016-07-16 | Sanitation Dept | FAILURE TO BUNDLE NEWSPAPES MAGAZINES CARDBOARD 1 TO 8 DWELLING UNITS | 304-308 REALTY | $25 / $25 / — | 042039996Z |
| No balance due PAID IN FULL | 2016-07-02 | Sanitation Dept | NON-RECYC LEFT IN RECYC CONTAINER FOR COLLECTION 1TO8 DWELLING UNITS | 304-308 REALTY | $25 / $25 / — | 0188765051 |
| No balance due PAID IN FULL | 2015-02-22 | Sanitation Dept | SNOW,ICE DIRT ON SIDEWALKS | 304-308 REALTY | $100 / $100 / — | 041538427Z |
| No balance due PAID IN FULL | 2011-04-20 | Dos - Enforcement Agents | SIDEWALK OBSTRUCTION | SIDEWALK CAFE | $100 / $100 / — | 041583753R |
| No balance due PAID IN FULL · IN VIOLATION | 2010-09-26 | Dos - Enforcement Agents | STORAGE OF RECEPTACLES | 304-308 REALTY | $100 / $100 / — | 041323684L |
| No balance due PAID IN FULL | 2010-04-21 | Dos - Enforcement Agents | SIDEWALK OBSTRUCTION | 8401 3RD AVE CORP | $100 / $100 / — | 041892426Z |
| No balance due Default PAID IN FULL · DEFAULTED | 2009-02-21 | Dos - Enforcement Agents | FAILURE TO PROPERLY PUT RECYCLABLES OUT FOR COLLECTION | 304-308 REALTY | $25 / $25 / — | 041910970Z |
Showing 12 of 21 records. The API and the source dataset have the full list.
Source: OATH Hearings Division Case Status — city dataset updated 2026-11-01; data as of 2026-11-01
HPD registration & contacts
Owners of most rental buildings must register with the Department of Housing Preservation and Development each year and list an owner and managing agent.
- HPD building ID
- 128205
- Last registered
- 2026-08-26
- Registration valid until
- 2027-09-01 CurrentRegistrations must be renewed every year.
| Role | Name | Company | Business city |
|---|---|---|---|
| Agent | Nikolaos Leonardos | DAFNONAS ESTATES LTD | Brooklyn, Ny |
| Headofficer | Nikolaos Leonardos | Brooklyn, Ny | |
| Sitemanager | Nikolaos Leonardos | ||
| Corporateowner | 304-308 REALTY LLC | Brooklyn, Ny |
Source: HPD Multiple Dwelling Registrations — city dataset updated 2026-10-28; data as of 2026-11-01; HPD Registration Contacts — city dataset updated 2026-10-28; data as of 2026-11-01
HPD housing-code violations 6 open of 12
Violations HPD inspectors issued for conditions in residential buildings (heat, leaks, mold, pests, lead paint, etc.). Class letters show how serious: Class A – non-hazardous (HPD gives 90 days to correct); Class B – hazardous (30 days to correct); Class C – immediately hazardous (24 hours to correct for most conditions); Class I – information / order (e.g. orders to register, lead or other administrative orders). Open means HPD has not recorded the condition as corrected.
| Status | Class | Issued | Apt | Condition |
|---|---|---|---|---|
| Open Nov Sent Out · 2020-07-07 | A | 2020-07-07 | § 27-2045 ADM CODE POST A PROPER NOTICE OF SMOKE DETECTOR REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, AT OR NEAR THE MAIL BOX .. AT PUBLIC HALL, 1st STORY | |
| Open Nov Sent Out · 2020-07-07 | A | 2020-07-07 | § 27-2046.1 HMC: POST A PROPER NOTICE OF CARBON MONOXIDE DETECTING DEVICE REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, IN A COMMON AREA OF A CLASS A MULTIPLE DWELLING NEAR INSPECTION CERTIFICATE OR PROVIDE NOTICE TO TENANTS IN A PRIVATE DWELLING. AT P | |
| Open Nov Sent Out · 2020-07-07 | A | 2020-07-07 | § 27-2005 HMC: POST, IN A FORM APPROVED BY THE COMMISSIONER, AND MAINTAIN A NOTICE IN A COMMON AREA OF THE BUILDING REGARDING THE PROCEDURES THAT SHOULD BE FOLLOWED WHEN A GAS LEAK IS SUSPECTED AT PUBLIC HALL | |
| Open Nov Sent Out · 2020-07-07 | A | 2020-07-07 | § 27-2104 ADM CODE POST AND MAINTAIN A PROPER SIGN ON WALL OF ENTRANCE STORY SHOWING THE REGISTRATION NUMBER ASSIGNED BY THE DEPARTMENT AND THE ADDRESS OF THE BUILDING. AT PUBLIC HALL, 1st STORY | |
| Open Nov Certified Late · 2019-12-06 | C | 2019-11-21 | § 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 ON WALL AT PUBLIC HALL, 1st STORY | |
| Open False Certification · 2015-05-22 | C | 2015-04-20 | 6 | SECTION 27-2043.1 HMC INSTALL THE MISSING OR REPAIR/REPLACE THE DEFECTIVE WINDOW GUARD(S) IN ACCORDANCE WITH THE SPECIFICATIONS OF THE NEW YORK CITY HEALTH CODE SECTION 24 RCNY CHAPTER 12. WG TO INSTALL = 1; WG TO REPLACE = 5; WG TO REPAIR = 5; MISSING-NO ONE |
| Closed Violation Dismissed · 2021-04-16 | A | 2021-04-05 | (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. | |
| Closed Violation Dismissed · 2015-08-26 | C | 2015-05-26 | 6 | § 27-2043.1 HMC INSTALL THE MISSING OR REPAIR/REPLACE THE DEFECTIVE WINDOW GUARD(S) IN ACCORDANCE WITH THE SPECIFICATIONS OF THE NEW YORK CITY HEALTH CODE SECTION 24 RCNY CHAPTER 12. WG TO INSTALL = 0; WG TO REPLACE = 3; WG TO REPAIR = 3; NO ONE WAY SREWS IN T |
| Closed Violation Closed · 2015-06-02 | C | 2015-05-15 | SECTION 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF FREE STANDING RADIATOR AT INTERMEDIATE LANDING AT PUBLIC HALL, 4th STORY | |
| Closed Violation Closed · 2015-05-26 | C | 2015-04-20 | SECTION 27-2005 ADM CODE & 309 M/D LAW ABATE THE NUISANCE CONSISTING OF FREE STANDING RADIATOR AT INTERMEDIATE LANDING AT PUBLIC HALL STAIRS, 4th STORY | |
| Closed Violation Dismissed · 2015-04-28 | I | 2015-02-05 | SECTION27-2107 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 P | |
| Closed Violation Closed · 2016-05-02 | C | 2000-10-10 | 1 | SECTION 27-2056.5 ADM CODE - CORRECT THE LEAD-BASED PAINT HAZARD - PRESUMED LEAD PAINT THAT IS PEELING OR IS ON A DETERIORATED SUBSURFACE - USING EXCLUSIVE INTERIM CONTROLS. CEILING IN THE BATHROOM LOCATED AT APT 1, 2nd STORY, 1st APARTMENT FROM SOUTH AT WEST |
Source: HPD Housing Maintenance Code Violations — city dataset updated 2026-10-31; data as of 2026-11-01
HPD complaints 4
Complaints tenants or others made to HPD (usually via 311) about housing conditions, from 2019 onward. A complaint is not a violation; HPD may inspect and issue one.
| Received | Status | Apt | Problem(s) | Outcome |
|---|---|---|---|---|
| 2020-06-27 | CLOSE | 3B | Electric – Power Outage | The Department of Housing Preservation and Development inspected the following conditions. No violations were issued. The complaint has been closed. |
| 2019-11-17 | CLOSE | 1 | Heat/Hot Water – Entire Building | The Department of Housing Preservation and Development responded to a complaint of no heat or hot water and was advised by a tenant in the building that heat and hot water had been restored. If the co |
| 2019-10-31 | CLOSE | 5 | Heat/Hot Water – Entire Building | The Department of Housing Preservation and Development responded to a complaint of no heat or hot water and was advised by a tenant in the building that heat and hot water had been restored. If the co |
| 2019-01-13 | CLOSE | 4 | Heat/Hot Water – Apartment Only | The Department of Housing Preservation and Development was not able to gain access to your apartment or others in the building to inspect for a lack of heat or hot water. The complaint has been closed |
Source: HPD Housing Maintenance Code Complaints and Problems — city dataset updated 2026-11-01; data as of 2026-11-01
311 requests (last 12 months) 2
Recent 311 service requests the city geocoded to this lot: noise, illegal parking, heat, sanitation and more. Anyone can file them, so they describe activity at or near the address, not necessarily the building itself.
| Opened | Agency | Complaint | Status | Closed |
|---|---|---|---|---|
| 2026-08-12 | DOB | Elevator – Elevator - Single Device On Property/No Alternate Service | Closed | 2026-08-19 |
| 2026-02-19 | DHS | Homeless Person Assistance – Chronic | Closed | 2026-02-20 |
Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-01; data as of 2026-11-01
Nearby properties
On 3 Ave
- 8402 3rd Avenue (13 open items)
- 8403 3rd Avenue (three open items)
- 8406 3rd Avenue (10 open items)
- 8407 3rd Avenue (16 open items)
- 8408 3rd Avenue (six open items)
- 8409 3rd Avenue (three open items)
- 8410 3rd Avenue (three open items)
- 8411 3rd Avenue (29 open items)
- 8412 3rd Avenue (six open items)
- 8413 3rd Avenue (12 open items)
Same tax block (6025)
- 8423 3rd Avenue (three open items)
- 8421 3rd Avenue (one open item)
- 8419 3rd Avenue (21 open items)
- 8415 3rd Avenue (11 open items)
- 8413 3rd Avenue (12 open items)
- 8411 3rd Avenue (29 open items)
- 8409 3rd Avenue (three open items)
- 8407 3rd Avenue (16 open items)
- 8403 3rd Avenue (three open items)
- 312 84th Street
All properties on 3 Ave, Brooklyn · All of Brooklyn 11209 (Bay Ridge)
Open-item counts as of October 31, 2026; each section lists its own dataset date. Machine-readable: JSON API · Markdown · Plain text · API & MCP docs