438 6th Avenue, Brooklyn, NY 11215
BBL 3010110044 (Borough 3, Block 1011, Lot 44) · BIN 3022299 · Last updated: · Park Slope · ZIP 11215
Summary · as of November 6, 2026
438 6th Avenue (Brooklyn, NY 11215; tax lot BBL 3010110044) is a 2-unit mixed-use building with apartments and ground-floor commercial space (building class S2: mixed-use: two-family home with one store or office), built around 1901, on a 1,080 sq ft lot zoned R6B. City tax records list the owner as 438 6TH AVENUE LLC; per ACRIS, a deed to this owner dated November 5, 2019 lists a price of $2,200,000. The Department of Finance's final market value for tax year 2027 is $2,780,000. As of November 6, 2026 (limited by DOB Job Application Filings (BIS); other open-item sources were confirmed later), NYC Open Data shows two DOB jobs with a permit issued but no sign-off, 10 open HPD violations and one OATH ticket with an unpaid balance. There was one 311 request in the past 12 months and two HPD complaints since 2019. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)
- Owner of record
- 438 6TH AVENUE LLC
- Building class
- S2 · Mixed-use: two-family home with one store or office
- Year built · units
- 1901 · 2 res.
- Lot area · zoning
- 1,080 sq ft · R6B
- Market value (DOF)
- $2,780,000 FY2027
- Last priced deed
- $2,200,000 · 2019-11-05
- BBL
- 3010110044
- BIN
- 3022299
- 2Open DOB jobs (permit issued, no sign-off)
- 0Active DOB violations
- 0Active ECB violations
- 10Open HPD violations
- 1OATH tickets with unpaid balance
How to cite: NYC Property Facts, “438 6th Avenue, Brooklyn, NY 11215 (BBL 3010110044)”, data as of 2026-11-06, https://nycpropertyfacts.com/ny/brooklyn/438-6th-avenue-3010110044. 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)
- 438 6TH AVENUE LLCThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
- Building class
- S2 – Mixed-use: two-family home with one store or officeThe 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
- 1901Often an estimate for older buildings.
- Floors
- 3
- Units
- 2 residential / 3 totalResidential units are apartments; total includes stores and offices.
- Buildings on lot
- 1
- Lot size
- 1,080 sq ft (18 ft × 60 ft)
- Building floor area
- 2,160 sq ft (incl. 720 sq ft commercial)
- Zoning
- R6BThe zoning district sets what can be built and used here. Residential district.
- Built vs. allowed density (FAR)
- 2.00 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 3010110044 (Borough 3, Block 1011, Lot 44) · BIN 3022299BBL 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; last loaded 2026-11-07; Building Footprints — city dataset updated 2026-10-25; last loaded 2026-11-01
Tax assessment
How the Department of Finance values this lot for property tax.
- Market value (tax year 2027, final roll)
- $2,780,000The 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
- $166,800The portion of market value that taxes are calculated on (capped by law for small homes).
- Taxable value (final)
- $33,792Assessed value minus any exemptions.
- Tax class
- Tax class 1 – 1–3 family homes (and some small mixed-use / vacant lots)
| Tax year | Roll | Market value | Assessed value | Tax class |
|---|---|---|---|---|
| 2027 | Final | $2,780,000 | $166,800 | 1 |
| 2026 | Final | $2,922,000 | $175,320 | 1 |
| 2025 | Final | $2,513,000 | $150,780 | 1 |
Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; last loaded 2026-11-07
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 |
|---|---|---|---|---|---|
| 2019-11-05 | DEED | $2,200,000 | 438 6th Avenue Associates, Llc | 438 6th Avenue Llc | 2019111100365001 |
| 2015-09-16 | DEED | $0 / not stated | Maffei, Maryanne | 438 6th Avenue Associates Llc | 2016030801248001 |
| 1996-04-19 | DEED | $0 / not stated | Maffei, Walter; Maffei, Maryanne | Maffei, Maryanne | FT_3990005217499 |
| 1993-12-03 | DEED | $0 / not stated | Gmelch, Anna Sowa Decd; Gmelch, Paul; Gmelch, Frances Dstbee | Maffei, Walter; Maffei, Maryanne | FT_3830001822183 |
| 1968-04-30 | DEED | $0 / not stated | Gmelch Charles J | Gmelch Anna S; Gmelch Charles J | BK_6830070800464 |
Source: ACRIS Real Property Master — city dataset updated 2026-10-08; last loaded 2026-11-07; ACRIS Real Property Legals — city dataset updated 2026-10-08; last loaded 2026-11-07; ACRIS Real Property Parties — city dataset updated 2026-10-08; last loaded 2026-11-07
DOB job filings 2 open of 4
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 · 2021-04-14 | 340754008 BIS | A2 – Alteration with multiple work types (no change to use/occupancy) | 2020-08-10 | $17,000 |
| Permitted, not signed off PERMIT ISSUED - ENTIRE JOB/WORK · 2009-06-12 | 320020124 BIS | A3 – Minor alteration (one type of work) | 2009-05-21 | — |
| Not open APPLICATION PROCESSED - ENTIRE · 2020-05-13 | 340728127 BIS | A2 – Alteration with multiple work types (no change to use/occupancy) | 2020-05-11 | $7,200 |
| Not open SIGNED OFF · 2011-05-25 | 310308244 BIS | A2 – Alteration with multiple work types (no change to use/occupancy) | 2009-03-19 | $10,000 |
Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-06; last loaded 2026-11-07; DOB Job Application Filings (BIS) — city dataset updated 2026-11-05; last loaded 2026-11-06; a later sync attempt failed on 2026-11-07; showing the last successful load
Work permits 7
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 |
|---|---|---|---|---|
| 2022-05-26 | 2023-05-10 | 340754008 BIS | Equipment work / Other / general construction | ISSUED (renewal) |
| 2022-05-18 | 2023-05-10 | 340754008 BIS | Equipment work / Other / general construction | ISSUED (renewal) |
| 2021-04-14 | 2021-10-20 | 340754008 BIS | Equipment work / Other / general construction | ISSUED (initial) |
| 2010-03-31 | 2011-02-18 | 310308244 BIS | Construction equipment (scaffold, fence, shed) / Construction equipment | ISSUED (initial) |
| 2010-03-31 | 2011-02-18 | 310308244 BIS | Equipment work / Other / general construction | ISSUED (initial) |
| 2009-06-12 | 2010-06-08 | 320020124 BIS | Construction equipment (scaffold, fence, shed) / Construction equipment | ISSUED (renewal) |
| 2009-05-22 | 2009-06-08 | 320020124 BIS | Construction equipment (scaffold, fence, shed) / Construction equipment | ISSUED (initial) |
Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-06; last loaded 2026-11-07; DOB Permit Issuance (BIS) — city dataset updated 2026-11-07; last loaded 2026-11-07
DOB violations 0 active of 0
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).
No records found in this dataset for this lot.
Source: DOB Violations — city dataset updated 2026-11-06; last loaded 2026-11-07
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 2026-11-06; last loaded 2026-11-07
OATH tickets (all agencies) 1 unpaid of 9
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 DEFAULTED · DEFAULTED | 2025-04-22 | Dep - Bureau Of Env. Complianc | IDLING OF MOTOR VEHICLE ENGINE MORE THAN THREE MINUTES 3RD AND SUB | AMAZON LOGISTICS INC | $2,000 / $0 / $2,200 | 001014313M |
| No balance due Default PAID IN FULL · DEFAULTED | 2025-02-15 | Dep - Bureau Of Env. Complianc | IDLING OF MOTOR VEHICLE ENGINE MORE THAN THREE MINUTES 1ST OFF | AMAZON LOGISTICS INC | $1,000 / $1,314 / $0 | 000934161H |
| No balance due PAID IN FULL | 2024-02-05 | Dos - Enforcement Agents | STORAGE OF RECEPTACLES PLACED OUT PRIOR TO 8PM WITHOUT A RECEPTACLE | 438 6TH AVENUE LLC | $50 / $50 / $0 | 048250509Y |
| No balance due PAID IN FULL | 2023-11-17 | Sanitation Others | DIRTY SIDEWALK | 438 6TH AVENUE LLC | $50 / $50 / $0 | 048132410R |
| No balance due PAID IN FULL · STIPULATED | 2015-11-02 | Dep - Bureau Of Env. Complianc | PARTICULATE EMISSIONS FROM CONSTRUCTION ACTIVITY | EXCELLENT CONTRACTING LLC | $700 / $700 / — | 000405581K |
| No balance due Default PAID IN FULL · DEFAULT | 2014-05-01 | Sanitation Dept | SIDEWALK OBSTRUCTION | MAFFEI | $300 / $309 / — | 041994834P |
| No balance due Default PAID IN FULL · DEFAULT | 2013-04-09 | Sanitation Dept | LOOSE RUBBISH | MAFFEI | $130 / $100 / — | 041637530K |
| No balance due Default PAID IN FULL · DEFAULTED | 2009-07-21 | Dos - Enforcement Agents | FAILURE TO PROPERLY PUT RECYCLABLES OUT FOR COLLECTION | MAFFEI | $25 / $25 / — | 041992857Z |
| No balance due PAID IN FULL | 2007-10-10 | Dos - Enforcement Agents | NON-RECYCLABLES LEFT IN RECYCLING CONTAINER FOR COLLECTION | MAFFEI | $25 / $25 / — | 041500438K |
Source: OATH Hearings Division Case Status — city dataset updated 2026-11-07; last loaded 2026-11-07
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.
No HPD registration found. Registration is required for buildings with 3 or more apartments (and for 1–2 family homes where neither the owner nor family lives there).
Source: HPD Multiple Dwelling Registrations — city dataset updated 2026-11-04; last loaded 2026-11-07; HPD Registration Contacts — city dataset updated 2026-11-04; last loaded 2026-11-07
HPD housing-code violations 10 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 · 2020-03-06 | A | 2020-03-06 | 3 | § 27-2005 ADMIN. CODE: PROPERLY REPAIR THE BROKEN OR DEFECTIVE ( INOPERATIVE ) BELL AND RETURN BUZZER INTERCOM SYSTEM FROM SOUTH WALL AT BUILDING FRONT ENTRANCE TO PANEL AT NORTH WALL IN THE FOYER LOCATED AT APT 3, 3rd STORY |
| Open Nov Sent Out · 2020-03-06 | B | 2020-03-06 | 3 | HMC ADM CODE: § 27-2017.4 ABATE THE INFESTATION CONSISTING OF ROACHES IN THE ENTIRE APARTMENT LOCATED AT APT 3, 3rd STORY |
| Open Nov Sent Out · 2020-03-06 | B | 2020-03-06 | 3 | § 27-2005 ADMIN. CODE: REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN UNIFORM COLOR THE CEILING IN THE KITCHEN LOCATED AT APT 3, 3rd STORY |
| Open Nov Sent Out · 2020-03-06 | B | 2020-03-06 | 3 | § 27-2005 ADMIN. CODE: REPAIR THE ROOF SO THAT IT WILL NOT LEAK THROUGH CEILING IN THE KITCHEN LOCATED AT APT 3, 3rd STORY |
| Open Nov Sent Out · 2020-03-06 | A | 2020-03-06 | 3 | § 27-2005 ADMIN. CODE: REPLACE WITH NEW THE MISSING ESCUTCHEON PLATE AT CEILING AROUND STEAM RISER IN THE KITCHEN LOCATED AT APT 3, 3rd STORY |
| Open Nov Sent Out · 2020-03-06 | A | 2020-03-06 | 3 | § 27-2005 ADMIN. CODE: REPLACE WITH NEW THE MISSING ESCUTCHEON PLATE AT CEILING AROUND STEAM RISER IN THE BATHROOM LOCATED AT APT 3, 3rd STORY |
| Open Nov Sent Out · 2020-03-06 | B | 2020-03-06 | 3 | § 27-2005 ADMIN. CODE: REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN UNIFORM COLOR THE CEILING IN THE BATHROOM LOCATED AT APT 3, 3rd STORY |
| Open Nov Sent Out · 2020-03-06 | A | 2020-03-06 | § 27-2005 ADMIN. CODE: PROVIDE A SHOE PROPERLY SECURED TO BOTTOM OF STRINGS OF DROPLADDER AT BUILDING FRONT FIRE ESCAPE | |
| Open Nov Sent Out · 2020-03-06 | B | 2020-03-06 | 3 | § 27-2005 ADMIN. CODE: REPAIR THE ROOF SO THAT IT WILL NOT LEAK THROUGH CEILING IN THE BATHROOM LOCATED AT APT 3, 3rd STORY |
| Open Nov Sent Out · 2020-03-06 | B | 2020-03-06 | § 27-2005,2007 ADMIN. CODE AND DEPARTMENT RULES AND REGULATIONS: REMOVE THE ENCUMBRANCE OBSTRUCTING EGRESS FROM FIRE ESCAPES CONSISTING OF FLOWER POTS ON 3RD STORY BALCONY AT BUILDING FRONT FIRE ESCAPE | |
| Closed Violation Closed · 2023-02-23 | I | 2022-11-17 | §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 PREMISE | |
| Closed Violation Closed · 2023-02-23 | I | 2022-03-16 | §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 PREMISE |
Source: HPD Housing Maintenance Code Violations — city dataset updated 2026-11-06; last loaded 2026-11-07
HPD complaints 2
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 |
|---|---|---|---|---|
| 2020-03-02 | CLOSE | 3 | General – Bell/Buzzer/Intercom Unsanitary Condition – Pests Water Leak – Damp Spot | The Department of Housing Preservation and Development inspected the following conditions. Violations were issued. Information about specific violations is available at www.nyc.gov/hpd |
| 2020-02-25 | CLOSE | 3 | Paint/Plaster – Ceiling General – Bell/Buzzer/Intercom | The Department of Housing Preservation and Development inspected the following conditions. No violations were issued. The complaint has been closed. |
Source: HPD Housing Maintenance Code Complaints and Problems — city dataset updated 2026-11-07; last loaded 2026-11-07
311 requests (last 12 months) 1
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 |
|---|---|---|---|---|
| 2026-04-27 | NYPD | Illegal Parking – Blocked Hydrant | Closed | 2026-04-27 |
Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-07; last loaded 2026-11-07
Nearby properties
Ordered by map distance among lots on this street within 40 house numbers and on this tax block within 15 lot numbers.
More in Park Slope: Open HPD violations · Active DOB violations · Active ECB violations · Open DOB jobs · Unpaid OATH tickets
Closest on 6 Ave
- 440 6th Avenue (26 ft)
- 442 6th Avenue (43 ft) (nine open items)
- 444 6th Avenue (62 ft) (one open item)
- 446 6th Avenue (82 ft) (eight open items)
- 448 6th Avenue (100 ft) (16 open items)
- 451 6th Avenue (148 ft) (61 open items)
Same tax block (1011), closest first
- 370 9th Street (39 ft) (four open items)
- 368 9th Street (49 ft) (23 open items)
- 366 9th Street (65 ft)
- 364 9th Street (82 ft)
- 443 10th Street (96 ft) (three open items)
- 362 9th Street (101 ft) (four open items)
Open-item counts as of November 6, 2026; each section lists its own dataset date. Machine-readable: JSON API · Markdown · Plain text · API & MCP docs