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81 Adelphi Street, Brooklyn, NY 11205

BBL 3020450030 (Borough 3, Block 2045, Lot 30) · BIN 3058094 · Last updated:

Summary · as of October 31, 2026

81 Adelphi Street (Brooklyn, NY 11205; tax lot BBL 3020450030) is a two-family home (building class B2: two-family home, frame (wood)), built around 1901, on a 1,875 sq ft lot zoned R5B. City tax records list the owner as GILLIGAN, THOMAS; per ACRIS, a deed to this owner dated July 6, 2017 lists a price of $2,100,000. The Department of Finance's final market value for tax year 2027 is $2,558,000. As of October 31, 2026, NYC Open Data shows two DOB jobs with a permit issued but no sign-off. (Source: NYC Open Data — DOB, HPD, OATH, DOF, DCP and ACRIS datasets — compiled by NYC Property Facts.)

Owner of record
GILLIGAN, THOMAS
Building class
B2 · Two-family home, frame
Year built · units
1901 · 2 res.
Lot area · zoning
1,875 sq ft · R5B
Market value (DOF)
$2,558,000 FY2027
Last priced deed
$2,100,000 · 2017-07-06
BBL
3020450030
BIN
3058094

How to cite: NYC Property Facts, “81 Adelphi Street, Brooklyn, NY 11205 (BBL 3020450030)”, data as of 2026-10-31, https://nycpropertyfacts.com/ny/brooklyn/81-adelphi-street-3020450030. 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)
GILLIGAN, THOMASThe owner name on the city’s tax records. It can lag behind recent sales and is often an LLC.
Building class
B2 – Two-family home, frame (wood)The 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
1901Often an estimate for older buildings. Major alteration recorded: 2023.
Floors
2
Units
2 residential / 2 totalResidential units are apartments; total includes stores and offices.
Buildings on lot
1
Lot size
1,875 sq ft (18.75 ft × 100 ft)
Building floor area
2,464 sq ft
Zoning
R5BThe zoning district sets what can be built and used here. Residential district.
Built vs. allowed density (FAR)
1.31 built / 1.50 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 3020450030 (Borough 3, Block 2045, Lot 30) · BIN 3058094BBL 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)
$2,558,000The 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
$153,480The portion of market value that taxes are calculated on (capped by law for small homes).
Taxable value (final)
$17,008Assessed 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$2,558,000$153,4801
2026Final$1,965,000$117,9001
2025Final$1,879,000$112,7401

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

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.

DateTypePriceSeller (grantor)Buyer (grantee)Doc ID
2017-07-06DEED$2,100,000Corey, Alan M; Corey, SadiaGilligan, Thomas; Gilligan, Erin2017071300925003
2009-04-02DEED$0 / not statedCorey, Alan MCorey, Sadia; Corey, Alan M2009042300111001
2003-01-09DEED$0 / not statedTeh Hetrick-Martin InstituteCorey, Alan M2003013000200001
2001-06-18DEED$0 / not statedInteroffice IncHetrick-Martin InstituteFT_3830007737783
2000-02-24DEED$0 / not statedPepper, Thomas C; Pepper, Patricia A; Portas, Aniceto/Dec'DInteroffice IncFT_3420007182542

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 2 open of 6

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 · 2025-02-18
B00574623-I1
DOB NOW
Alteration2021-10-17$20,000
Permitted, not signed off
Permit Entire · 2025-08-12
B00574603-I1
DOB NOW
Alteration CO2021-10-17$300,000
Not open
Approved · 2023-07-06
B00574623-P1
DOB NOW
Alteration2023-06-28$20,000
Not open
Approved · 2023-07-06
B00574603-P1
DOB NOW
Alteration CO2023-06-28$300,000
Not open
SIGNED OFF · 2014-12-02
310137731
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2008-05-05$60,000
Not open
SIGNED OFF · 2001-05-07
301152268
BIS
A2 – Alteration with multiple work types (no change to use/occupancy)2001-03-28$30,000

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 15

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
2025-08-122025-12-03B00574603-I1
DOB NOW
General Construction
Conversion of 2 family home to 1 family , Including removal of interior partitions, addition of new interior partitions. Removal of 2nd fl. kit. & one 1st fl ba
Permit Issued
2025-02-182025-09-13B00574623-I1
DOB NOW
Plumbing
Installation of plumbing fixtures. No change of use, egress or occupancy under this application.
Signed-off
2025-01-212025-12-03B00574603-I1
DOB NOW
General Construction
Conversion of 2 family home to 1 family , Including removal of interior partitions, addition of new interior partitions. Removal of 2nd fl. kit. & one 1st fl ba
Permit Issued
2024-08-222025-01-01B00574603-I1
DOB NOW
General Construction
Conversion of 2 family home to 1 family , Including removal of interior partitions, addition of new interior partitions. Removal of 2nd fl. kit. & one 1st fl ba
Permit Issued
2024-03-142025-03-14B00574623-I1
DOB NOW
Plumbing
Installation of plumbing fixtures. No change of use, egress or occupancy under this application.
Signed-off
2024-01-092024-08-11B00574603-I1
DOB NOW
General Construction
Conversion of 2 family home to 1 family , Including removal of interior partitions, addition of new interior partitions. Removal of 2nd fl. kit. & one 1st fl ba
Permit Issued
2023-12-142024-01-01B00574603-I1
DOB NOW
General Construction
Conversion of 2 family home to 1 family , Including removal of interior partitions, addition of new interior partitions. Removal of 2nd fl. kit. & one 1st fl ba
Permit Issued
2023-08-302023-12-03B00574603-I1
DOB NOW
General Construction
Conversion of 2 family home to 1 family , Including removal of interior partitions, addition of new interior partitions. Removal of 2nd fl. kit. & one 1st fl ba
Permit Issued
2023-08-042023-08-11B00574603-I1
DOB NOW
General Construction
Conversion of 2 family home to 1 family , Including removal of interior partitions, addition of new interior partitions. Removal of 2nd fl. kit. & one 1st fl ba
Permit Issued
2013-10-152014-10-15310137731
BIS
Plumbing / PlumbingISSUED (renewal)
2012-08-202013-08-20310137731
BIS
Plumbing / PlumbingISSUED (renewal)
2008-07-282009-07-28310137731
BIS
Plumbing / PlumbingISSUED (initial)

Showing 12 of 15 records. The API and the source dataset have the full list.

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 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).

StatusIssuedTypeDescriptionNumber
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1997-09-18IMEGNCY-IMMEDIATE EMERGENCY ANYTHINGOPTIONALCLOSE OPENINGS IN FRONT WALLV*091897IMEGNCY231/97
Resolved/dismissed
V*-DOB VIOLATION - DISMISSED
1997-09-17C-CONSTRUCTION OTHER OPTIONALV*091797C02MJ10

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

ECB violations (DOB) 0 active of 2

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: WRITTEN OFF · Certification: CERTIFICATE ACCEPTED
Written off refers to the penalty, not the violation.
1997-09-17HazardousFAILURE TO MAINTAIN EXTERIOR BUILDING WALL. HAZARDOUS DEFECTS ARE: AT1ST FL FRONT, EXTERIOR BLDG WALL ROTTED, DEFECTIVE AND IN IMMINENT DANGER OF COLLAPSE. INTERIOR COLLAPSE OF PLASTER CEILING.$1,000 / $0 / $034161554K
Resolved
Hearing: WRITTEN OFF · Certification: CERTIFICATE ACCEPTED
Written off refers to the penalty, not the violation.
1999-05-04HazardousFAILURE TO MAINTAIN EXTERIOR BLDG WALL. DEFECT IS: 1ST FL FRONT EXTERIOR WALL IS ROTTED, DEFECTIVE & HAS PARTIALLY COLLAPSED. FAILURE TO MAINTAIN. DEFECT IS: COLLAPSE OF INTERIOR CEILING & FL 2ND & 1ST FL$5,000 / $0 / $034209704R

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

OATH tickets (all agencies) 0 unpaid of 95

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
2024-11-08Sanitation OthersFAILURE TO PROPERLY PUT RECYCS OUT FOR COLLECTION 1TO8DWELLING UNITSGILLIGAN THOMAS$25 / $25 / $0048604276H
No balance due
PAID IN FULL
2017-07-10Sanitation OthersSTORAGE OF RECEPTACLESGIUIGAN$100 / $100 / $00194993893
No balance due
PAID IN FULL
2015-05-19Sanitation OthersSTORAGE OF RECEPTACLESCOREY$100 / $100 / —0186265970
No balance due Default
PAID IN FULL · DEFAULT
2015-05-07SPILLAGE FROM TRUCK OR RECEPTACLECOREY$130 / $130 / —040439586X
No balance due
PAID IN FULL
2012-06-15Dos - Enforcement AgentsFAILURE TO PROPERLY PUT RECYCS OUT FOR COLLECTION(1TO8DWELLING UNITS)COREY$25 / $25 / —041585373Y
No balance due Default
PAID IN FULL · DEFAULTED
2009-01-15Sanitation OthersFAILURE TO PROPERLY PUT RECYCLABLES OUT FOR COLLECTIONCOREY$25 / $25 / —0172793601
No balance due
PAID IN FULL
2008-12-05Dos - Enforcement AgentsFAILURE TO PROPERLY PUT RECYCLABLES OUT FOR COLLECTIONCOREY$25 / $25 / —041561468K
No balance due
PAID IN FULL
2007-10-05Dos - Enforcement AgentsNON-RECYCLABLES LEFT IN RECYCLING CONTAINER FOR COLLECTIONCOREY$25 / $25 / —041500431H
No balance due
PAID IN FULL
2007-07-11Sanitation OthersDIRTY SIDEWALK DIRTY AREAALAN$100 / $100 / —0154026171
No balance due
PAID IN FULL
2007-03-28$100 / $100 / —0158775284
No balance due
PAID IN FULL
2007-03-19$100 / $100 / —0154027419
No balance due
PAID IN FULL
2005-05-20$25 / $25 / —0145540551

Showing 12 of 95 records. The API and the source dataset have the full list.

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) 0

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.

No records found in this dataset for this lot.

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

Nearby properties

On Adelphi St

Same tax block (2045)

All properties on Adelphi St, Brooklyn · All of Brooklyn 11205 (Bedford-Stuyvesant (West))

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