One family attached or semi-detached

78A SULLIVAN STREET

BROOKLYN · Carroll Gardens-Cobble Hill-Gowanus-Red Hook · BIN 3418250

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2016Year Built

3Stories

A5Building Class

R5Zoning

—Gross Floor Area

1Units

0 Open ViolationsFDNY Report ↗

One family attached or semi-detached · Owner of record: MAINSAIL LLC · 1.56 FAR built · Flood zone X500

Locations of Work

No floor-level scope or drawing coverage on file for this building.

▾Owner History (Filing Record)

Companies and organizations named on filings. Individual owners are not shown.

Owner	Filings	Most Recent
MAINSAIL LLC	1	03/22/2026
KING EQUITY PARTNERS	13	03/21/2026

▾Contractors (License-Anchored)

Firm	Trade	Roles	Most Recent
G.N.T. MECHANICAL, LLC	Plumbing	4	03/22/2026

Building Lifecycle

All (1)Violation (1)

10/26/2016

Violation issued (DOB, closed)

V*-DOB VIOLATION - DISMISSED

Permit / Filing Register

Source	Work Type	Status	Applicant	Issued
BIS	PL	ISSUED	G.N.T. MECHANICAL, LLC	03/26/2018
BIS	—	ISSUED	HAILEY DEVELOPMENT GROUP	04/24/2017
BIS	PL	ISSUED	G.N.T. MECHANICAL, LLC	02/23/2017
BIS	PL	ISSUED	G.N.T. MECHANICAL, LLC	08/25/2016
BIS	—	ISSUED	HAILEY DEVELOPMENT GROUP	05/16/2016
BIS	—	ISSUED	HAILEY DEVELOPMENT GROUP	05/09/2016
BIS	CC	ISSUED	HAILEY DEVELOPMENT GROUP	12/17/2015
BIS	—	ISSUED	HAILEY DEVELOPMENT GROUP	08/03/2015

Nothing on file for this building.

▾Documents — 171 on file (BIS + DOB NOW)

▸Applications & Permits27

▸BISPLAN / WORK APPROVAL APPLICATION18

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▸BISWORK PERMIT APPLICATION8

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▸BISCERTIFICATE OF OCCUPANCY: APPLICATION1

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▸Zoning, Tax Lot & Property Records7

▸BISADDRESS: NEW HOUSE NUMBER APPROVED2

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▸BISZONING DIAGRAM1

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▸BISEASEMENT AND RESTRICTIVE DECLARATIONS - SUPPPORTING DOCUMENTATION1

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▸BISZONING EXHIBIT I: CERTIFICATION1

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▸BISZONING APPEAL1

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▸BISZONING EXHIBIT III:DESC. & OWNRSHP.STMNT1

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▸Seals & Professional Certifications16

▸BISTECHNICAL REPORT: RESPONSIBILITY/CERTIFICATION15

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▸BISAPPLICANT OWNER SIGNATURE1

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▸Trade Schedules & Equipment13

▸BISSCHEDULE B - PLUMBING8

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▸BISSEWER CONNECTION:DEP SD1&21

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▸BISEQUIPMENT USE APPLICATION/PERMIT1

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▸BISEQUIPMENT USE PERMITS1

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▸BISDEP SANITARY SEWER CERTIFICATION (HCP/SCP)1

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▸BISSEWER CUT-OFF1

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▸Safety & Tenant Protection13

▸BISSTREET TREE CHECKLIST5

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▸BISSTREET TREES: RECEIPT OF STREET TREES SITE PLAN4

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▸BISSTREET TREE SUPPORTING DOCUMENT3

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▸BISEXCAVATION OR DEMOLITION: 5-DAY NOTICE1

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▸Energy Compliance9

▸BISTECHNICAL REPORT: ENERGY CODE PROGRESS INSPS4

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▸BISTECHNICAL REPORT: ENERGY CODE - RESPONSIBILITY3

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▸BISAS-BUILT ENERGY ANALYSIS2

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▸Inspections & Test Reports20

▸BISTECHNICAL REPORT: RESPONSIBILITY11

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▸BISMASONRY MANUFACTURER'S STATEMENT-FORM 10H2

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▸BISTECHNICAL REPORT: CONCRETE/TEST CYLINDER2

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▸BISTECHNICAL REPORT: PILE DRIVING2

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▸BISTECHNICAL REPORT: CONCRETE DESIGN MIX1

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▸BISINSPECTION REPORT - SUPPORTING DOCUMENTATION1

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▸BISTR2: CONCRETE TEST CYLINDERS TECHNICAL REPORT1

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▸Approvals, Objections & Sign-offs23

▸BISCERTIFICATE OF OCCUPANCY/LOC: REQUEST15

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▸BISSCHEDULE A - OCCUPANCY / USE4

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▸BISLETTERS - SUPPORTING DOCUMENTATION2

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▸BISCONSTRUCTION CODE DETERMINATION2

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▸Cost, Insurance & Ownership2

▸BISSTEEL AFFIDAVIT- FINAL2

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▸Filing & Intake Forms31

▸BISBOROUGH INTAKE FORM14

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▸BISADDITIONAL INFORMATION12

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▸BISEFILING COVER SHEET4

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▸BISEFILING JOB APPLICATION COVER SHEET1

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▸Other Documents10

▸BISPLOT DIAGRAM4

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▸BISEXTERNAL FORMS - SUPPORTING DOCUMENTATION4

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▸BISFEMA ELEVATION CERT (086-0-33)/ FLOODPROOFING CERT (086-0-34)1

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▸BISCONSTRUCTION - SUPPORTING DOCUMENTATION1

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