Independent site. Data from NYC Open Data; not affiliated with the City of New York.

NYC Property Factsfree public-records reference

634 3rd Street, Brooklyn, NY 11215

BBL 3010810036 (Borough 3, Block 1081, Lot 36) · BIN 3025485 · Last updated:

Summary · as of October 31, 2026

634 3rd Street (Brooklyn, NY 11215; tax lot BBL 3010810036) is a two-family home (building class B9: two-family home, miscellaneous), built around 1909, on a 1,948 sq ft lot zoned R7B. City tax records list the owner as 634 THIRD LLC; per ACRIS, a deed to this owner dated July 14, 2017 lists a price of $3,750,000. The Department of Finance's final market value for tax year 2027 is $4,880,000. As of October 31, 2026, NYC Open Data shows one DOB job with a permit issued but no sign-off. There was one 311 request 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.)

Owner of record
634 THIRD LLC
Building class
B9 · Two-family home, miscellaneous
Year built · units
1909 · 2 res.
Lot area · zoning
1,948 sq ft · R7B
Market value (DOF)
$4,880,000 FY2027
Last priced deed
$3,750,000 · 2017-07-14
BBL
3010810036
BIN
3025485

How to cite: NYC Property Facts, “634 3rd Street, Brooklyn, NY 11215 (BBL 3010810036)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/634-3rd-street-3010810036. 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)
634 THIRD LLCThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
B9 – Two-family home, miscellaneousThe Department of Finance’s category for what kind of building this is.
Land use
One- & two-family buildingsCity Planning’s broad category of how the lot is used.
Year built
1909Often an estimate for older buildings.
Floors
4
Units
2 residential / 2 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
1,948 sq ft (20.5 ft × 95 ft)
Building floor area
3,624 sq ft
Zoning
R7BThe zoning district sets what can be built and used here. Residential district.
Built vs. allowed density (FAR)
1.86 built / 3.00 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).
Historic district
Park Slope Historic DistrictExterior changes in a historic district need Landmarks Preservation Commission approval.
Identifiers
BBL 3010810036 (Borough 3, Block 1081, Lot 36) · BIN 3025485BBL identifies the tax lot; BIN identifies each building (from DOB/HPD/footprint records).

Source: PLUTO (Dept. of City Planning) — city dataset updated 2026-08-24; data as of 2026-11-02; 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)
$4,880,000The 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
$292,800The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$114,775Assessed value minus any exemptions.
Tax class
Tax class 1 – 1–3 family homes (and some small mixed-use / vacant lots)
Tax yearRollMarket valueAssessed valueTax class
2027Final$4,880,000$292,8001
2026Final$4,525,000$271,5001
2025Final$4,431,000$265,8601

Source: DOF Property Valuation and Assessment Data — city dataset updated 2026-09-14; data as of 2026-11-02

Sales & deed history 4

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.

DateTypePriceSeller (grantor)Buyer (grantee)Doc ID
2017-07-14DEED$3,750,000Mercado, Eileen634 Third Llc2017071900915001
1997-05-01DEED$0 / not statedHorn, Margaret MMercado, EileenFT_3120005608612
1996-12-13DEED$0 / not statedHorn, Margaret MMercado, EileenFT_3130005454213
1966-02-23DEED$0 / not statedToolan Anna HHorn Margaret MBK_6630005100205

Source: ACRIS Real Property Master — city dataset updated 2026-10-08; data as of 2026-11-02; ACRIS Real Property Legals — city dataset updated 2026-10-08; data as of 2026-11-02; ACRIS Real Property Parties — city dataset updated 2026-10-08; data as of 2026-11-02

DOB job filings 1 open of 5

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.

StatusJob #TypeFiledEst. cost
Permitted, not signed off
Permit Entire · 2023-08-03
B00913024-I1
DOB NOW
Alteration2023-08-03$5,000
Not open
LOC Issued · 2025-03-25
B00929289-I1
DOB NOW
Alteration2023-09-26$10,000
Not open
SIGNED OFF · 2020-01-16
340623873
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2018-08-03$12,000
Not open
PLAN EXAM - IN PROCESS · 2018-08-01
340623392
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2018-08-01$14,000
Not open
SIGNED OFF · 2019-04-01
321645234
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2017-08-25$94,500

Source: DOB NOW: Build – Job Application Filings — city dataset updated 2026-11-01; data as of 2026-11-02; DOB Job Application Filings (BIS) — city dataset updated 2026-10-30; data as of 2026-10-31

Work permits 10

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.

IssuedExpiresJob #WorkPermit status
2023-10-232024-05-03B00929289-I1
DOB NOW
Structural
Structural repair for lintel installation for support at windows and brick replacement at Front Facade, Reinforcement of Northeast Front corner at 2nd floor lev
Signed-off
2023-08-032024-08-03B00913024-I1
DOB NOW
Supported Scaffold
INSTALLATION OF SIDEWALK SHED, OVERHEAD PROTECTION, AND PIPE SCAFFOLDING AS PER PLANS. ALL EQUIPMENT SHALL COMPLY WITH CHAPTER# 33 OF THE NYC CODE 2022. NO CHAN
Permit Issued
2023-08-032024-08-03B00913024-I1
DOB NOW
Supported Scaffold
INSTALLATION OF SIDEWALK SHED, OVERHEAD PROTECTION, AND PIPE SCAFFOLDING AS PER PLANS. ALL EQUIPMENT SHALL COMPLY WITH CHAPTER# 33 OF THE NYC CODE 2022. NO CHAN
Permit Issued
2023-08-032024-08-03B00913024-I1
DOB NOW
Sidewalk Shed
INSTALLATION OF SIDEWALK SHED, OVERHEAD PROTECTION, AND PIPE SCAFFOLDING AS PER PLANS. ALL EQUIPMENT SHALL COMPLY WITH CHAPTER# 33 OF THE NYC CODE 2022. NO CHAN
Permit Issued
2023-08-032024-08-03B00913024-I1
DOB NOW
Sidewalk Shed
INSTALLATION OF SIDEWALK SHED, OVERHEAD PROTECTION, AND PIPE SCAFFOLDING AS PER PLANS. ALL EQUIPMENT SHALL COMPLY WITH CHAPTER# 33 OF THE NYC CODE 2022. NO CHAN
Permit Issued
2019-01-042019-08-09321645234
BIS
Equipment work / Mechanical/HVACISSUED (initial)
2018-09-132018-12-22340623873
BIS
Equipment work / Other / general constructionISSUED (initial)
2018-03-062018-10-23321645234
BIS
Equipment work / Other / general constructionISSUED (renewal)
2017-10-302018-10-30321645234
BIS
Plumbing / PlumbingISSUED (initial)
2017-10-102018-02-12321645234
BIS
Equipment work / Other / general constructionISSUED (initial)

Source: DOB NOW: Build – Approved Permits — city dataset updated 2026-11-02; data as of 2026-11-02; DOB Permit Issuance (BIS) — city dataset updated 2026-10-31; data as of 2026-10-31

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 2026-11-02; data as of 2026-11-02

ECB violations (DOB) 0 active of 1

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.

StatusIssuedSeverityWhat it was forPenalty / paid / balanceECB #
Resolved
Hearing: STIPULATION/IN-VIO · Certification: CERTIFICATE ACCEPTED
2018-08-24CLASS - 2WORK WITHOUT PERMIT: WORK NOTE: LARGE METAL & MASONRY ROOF DECK CREATED WITHOUT A PERMIT. REMEDY: OBTAIN PERMIT$620 / $620 / $035334005R

Source: DOB ECB Violations — city dataset updated 2026-10-31; data as of 2026-11-02

OATH tickets (all agencies) 0 unpaid of 4

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.

StatusDateAgencyChargeRespondentImposed / paid / balanceTicket #
No balance due
PAID IN FULL
2025-04-18Sanitation OthersIMPROPER RECEPTACLE FAILURE TO CONTAINERIZE - RESIDENTIAL 1ST634 THIRD LLC$50 / $50 / $0049145861P
No balance due
PAID IN FULL · STIPULATED
2020-03-10Dep - Bureau Of Env. CompliancIDLING OF MOTOR VEHICLE ENGINE MORE THAN THREE MINUTES 1ST OFFNEW YORK PAVING INC$350 / $350 / $0000668234K
No balance due
PAID IN FULL · STIPULATED
2018-08-24Dept. Of BuildingsWORK WITHOUT A PERMIT634 THIRD LLC$620 / $620 / $0035334005R
No balance due
PAID IN FULL
2015-10-03Sanitation DeptFAILURE TO PROPERLY PUT RECYCS OUT FOR COLLECTION 1TO8DWELLING UNITSHORN$25 / $25 / —041868501J

Source: OATH Hearings Division Case Status — city dataset updated 2026-11-02; data as of 2026-11-02

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 2026-10-28; data as of 2026-11-02; HPD Registration Contacts — city dataset updated 2026-10-28; data as of 2026-11-02

HPD housing-code violations 0 open of 0

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.

No records found in this dataset for this lot.

Source: HPD Housing Maintenance Code Violations — city dataset updated 2026-11-02; data as of 2026-11-02

HPD complaints 0

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.

No records found in this dataset for this lot.

Source: HPD Housing Maintenance Code Complaints and Problems — city dataset updated 2026-11-02; data as of 2026-11-02

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.

OpenedAgencyComplaintStatusClosed
2026-09-30DEPNoise – Manufacturing Business/PlantClosed2026-10-13

Source: 311 Service Requests from 2020 to Present — city dataset updated 2026-11-02; data as of 2026-11-02

Nearby properties

On 3 St

Same tax block (1081)

All properties on 3 St, Brooklyn · All of Brooklyn 11215 (Park Slope)

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