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Two family converted from one family
277 JEFFERSON AVENUE
BROOKLYN · BIN 3052044
💬 Discuss this project
1887Year Built
3Stories
B3Building Class
R6BZoning
3,240 sfGross Floor Area
2Units
Rent Stabilized11 Open Violations ▸FDNY Report ↗
Two family converted from one family · Owner of record: 277 JEFFERSON 123 LLC · 1,800 sf lot · 1.8 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralPlumbingGeneralOther
Permit Issued — active, not yet Signed-off
RoofUnder Construction5p · 1 filing · 8 docs
Floor 3Under Construction9p · 2 filings · 15 docs
Floor 2Under Construction9p · 3 filings · 20 docs
Floor 1Under Construction9p · 3 filings · 20 docs
CellarUnder Construction14p · 3 filings · 20 docs
Sub-BasementUnder Construction8p · 2 filings · 15 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
1821 ROCKAWAY LLC1803/22/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
12/11/2024$1.1M—— → —$340/sf building
01/25/2017$25K—Private party → 1821 ROCKAWAY LLC$8/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
PRIME ZONE BUILDING CONSULTING408/26/2026
DANNY CHEN107/24/2025
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
METRO DESIGN CONSULTANTS INC203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
J S REMODELING NY INCGeneral Contractor207/29/2026
CAVALRY LLCGeneral Contractor104/09/2026
PLBG P & H INCPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
PRIME ZONE BUILDING CONSU9474105/05/2026
D&E BUILD EVERGREEN I9342107/24/2025
NKM ENGINEERING PLLC6244107/24/2025
Building Lifecycle
All (110)Filed (5)Permit Issued (4)Signed Off (1)Violation (49)Inspection (4)Objection (20)Special Inspection (27)
08/26/2026
Filed — Alteration
PROVIDE NEW FIRE SPRINKLER SYSTEM THROUGHOUT 3-STORY,2 FAMILY BUILDING WITH CELLAR AND BASEMENT , INCONJUNCTION WITH ALT-1 #B01404567-I1NO CHANGE IN USE, MEANS OF EGRESS OR OCCUPANCY IN THISAPPLICATION.
B01451315-I1
08/25/2026
Special inspection requirement — Sprinkler Systems
08/06/2026
Objection resolved — Addressed
08/04/2026
Objection raised — Other
07/28/2026
Permit issued — General Construction
B01396919-I1-GC
07/10/2026
Objection resolved — Addressed
07/10/2026
Objection resolved — Addressed
07/10/2026
Objection resolved — Addressed
07/10/2026
Objection resolved — Addressed
07/10/2026
Objection resolved — Addressed
07/10/2026
Objection resolved — Addressed
07/10/2026
Objection resolved — Addressed
07/10/2026
Objection resolved — Addressed
07/10/2026
Objection resolved — Addressed
07/10/2026
Special inspection requirement — Insulation placement and R values
07/10/2026
Special inspection requirement — Permanent certificate
06/25/2026
Inspection — Certified Sprinkler-SP-Fixtures-Finish
Certified
View inspection ↗
06/24/2026
Objection raised — Other
06/24/2026
Objection raised — Other
06/24/2026
Objection raised — Other
06/24/2026
Objection raised — Other
06/24/2026
Objection raised — Other
06/24/2026
Objection raised — Other
06/24/2026
Objection raised — Cost
06/24/2026
Objection raised — Other
06/24/2026
Objection raised — Other
06/22/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
06/16/2026
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
06/09/2026
Inspection — Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic Test
Certified
View inspection ↗
06/03/2026
Permit issued — Plumbing
B01405284-I1-PL
05/29/2026
Filed — Alteration CO
CONVERT (1) ONE DWELLING UNIT AND (4) FOUR CLASS "B" ROOMS TO (2) TWO DWELLING UNITS IN EXISTING 3-STORY RESIDENTIAL BUILDING W/BASEMENT & CELLAR. INTERIOR RENOVATION AT EACH LEVEL. OBTAIN NEW CERTIFICATE OF OCCUPANCY.
B01404576-I1
05/21/2026
Filed — Alteration
PLUMBING WORK IN CONJUNCTION WITH ALT-2 APPLICATION #B01396919 & ALT 1 APPLICATION #B01404576 FOR RENOVATION IN EXISTING RESIDENTIAL BUILDING. NO CHANGE IN USE, MEANS OF EGRESS OR OCCUPANCY IN THIS APPLICATION.
B01405284-I1
05/20/2026
Special inspection requirement — HVAC-R and service water heating equipment
JICHEN SUN
05/20/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
05/20/2026
Special inspection requirement — Fenestration air leakage
05/20/2026
Special inspection requirement — Metering
05/20/2026
Special inspection requirement — Lighting in dwelling units
05/20/2026
Special inspection requirement — Fenestration areas
05/20/2026
Special inspection requirement — Energy Code Compliance Inspections
JICHEN SUN
05/20/2026
Special inspection requirement — HVAC-R and service water heating system controls
JICHEN SUN
05/20/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
JICHEN SUN
05/20/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
05/20/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
05/20/2026
Special inspection requirement — Energy Code Compliance Inspections
05/20/2026
Special inspection requirement — Fire-Resistance Rated Construction
05/20/2026
Special inspection requirement — Air barrier - visual inspection
05/20/2026
Special inspection requirement — Maintenance information
05/20/2026
Special inspection requirement — Interior lighting power
05/07/2026
Permit issued — General Construction
B01396919-I1-GC
05/05/2026
Filed — Alteration
INTERIOR RENOVATION IN EXISTING RESIDENTIAL BUILDING. NO CHANGE IN USE, MEANS OF EGRESS OR OCCUPANCY IN THIS APPLICATION
B01396919-I1
05/05/2026
Violation issued (HPD, open)
A
05/04/2026
Special inspection requirement — Interior lighting power
JICHEN SUN
05/04/2026
Special inspection requirement — Fenestration air leakage
JICHEN SUN
05/04/2026
Special inspection requirement — Lighting in dwelling units
JICHEN SUN
05/04/2026
Special inspection requirement — Fenestration areas
JICHEN SUN
05/04/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
JICHEN SUN
05/04/2026
Special inspection requirement — Fire-Resistance Rated Construction
JICHEN SUN
05/04/2026
Special inspection requirement — Energy Code Compliance Inspections
JICHEN SUN
05/04/2026
Special inspection requirement — Fire-Resistant Penetrations and Joints
JICHEN SUN
11/25/2025
Signed off — Alteration
B01256919-I1
Latest 60 of 110 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWGeneral ConstructionPermit IssuedJ S REMODELING NY INC07/28/2026
DOB NOWPlumbingPermit IssuedPLBG P & H INC06/03/2026
DOB NOWGeneral ConstructionPermit IssuedJ S REMODELING NY INC05/07/2026
DOB NOWGeneral ConstructionSigned-offCAVALRY LLC09/08/2025
1 project · most recent 08/26/2026
FiledStatusContractorScope
08/26/2026——55 heads
2 projects · most recent 08/26/2026
Gas Water/Sanitary
FiledStatusContractorScope
08/26/2026———
05/21/2026Permit IssuedPLBG P & H INCGas, Water/Sanitary
1 project · most recent 05/22/2026
General Wiring
FiledStatusContractorScope
05/22/2026Permit IssuedKJK ELECTRIC INCGeneral Wiring
▾Field Inspections (DOB CAP) — 4
DateTypeResultReport
06/25/2026Certified Sprinkler-SP-Fixtures-FinishCertifiedView ↗
06/22/2026Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
06/16/2026Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
06/09/2026Certified Sprinkler-SP-Piping Dry/Wet-Hydrostatic TestCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 27
DateRequirementInspectorRole
08/25/2026Sprinkler Systems—special
07/10/2026Insulation placement and R values—energy_progress
07/10/2026Permanent certificate—energy_progress
05/20/2026HVAC-R and service water heating equipmentJICHEN SUNenergy_progress
05/20/2026Fenestration and door U-factor and product ratings—energy_progress
05/20/2026Fenestration air leakage—energy_progress
05/20/2026Metering—energy_progress
05/20/2026Lighting in dwelling units—energy_progress
05/20/2026Fenestration areas—energy_progress
05/20/2026Energy Code Compliance InspectionsJICHEN SUNprogress
05/20/2026HVAC-R and service water heating system controlsJICHEN SUNenergy_progress
05/20/2026HVAC-R and service water piping design and insulationJICHEN SUNenergy_progress
05/20/2026Fire-Resistant Penetrations and Joints—special
05/20/2026Structural Stability – Alterations of existing buildings—special
05/20/2026Energy Code Compliance Inspections—progress
05/20/2026Fire-Resistance Rated Construction—progress
05/20/2026Air barrier - visual inspection—energy_progress
05/20/2026Maintenance information—energy_progress
05/20/2026Interior lighting power—energy_progress
05/04/2026Interior lighting powerJICHEN SUNenergy_progress
05/04/2026Fenestration air leakageJICHEN SUNenergy_progress
05/04/2026Lighting in dwelling unitsJICHEN SUNenergy_progress
05/04/2026Fenestration areasJICHEN SUNenergy_progress
05/04/2026Fenestration and door U-factor and product ratingsJICHEN SUNenergy_progress
05/04/2026Fire-Resistance Rated ConstructionJICHEN SUNprogress
Latest 25 of 27.
▾Documents — 26 on file (BIS + DOB NOW)
▸Plans & Drawings4
▸DOB NOWPlans/Sketch4
08/27/2026B01451315-I1Request digital key ↗
08/21/2026B01256919-I1Request digital key ↗
08/17/2026B01396919-I1Request digital key ↗
Showing 3 of 4 on file for this type
▸Applications & Permits4
▸DOB NOWLPC Approval/Permit4
08/27/2026B01451315-I1Open ↗
08/17/2026B01396919-I1Open ↗
08/16/2026B01405284-I1Open ↗
Showing 3 of 4 on file for this type
▸Seals & Professional Certifications9
▸DOB NOWDPL-1: Design Professional Seal & Signature4
08/27/2026B01451315-I1Open ↗
08/21/2026B01256919-I1Open ↗
08/17/2026B01396919-I1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWProgress Inspector Seal & Signature4
09/01/2026B01396919-I1Open ↗
09/01/2026B01396919-I1Open ↗
08/31/2026B01405284-I1Open ↗
Showing 3 of 4 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature1
09/01/2026B01396919-I1Open ↗
▸Safety & Tenant Protection4
▸DOB NOWHPD-3: Single Room Occupancy Multiple Dwelling (SRO MD) Anti-Harassment Checklist4
08/27/2026B01451315-I1Open ↗
08/17/2026B01396919-I1Open ↗
08/16/2026B01405284-I1Open ↗
Showing 3 of 4 on file for this type
▸Environmental & Asbestos4
▸DOB NOWDEP ACP-5: Asbestos Assessment Report4
08/27/2026B01451315-I1Open ↗
08/21/2026B01256919-I1Open ↗
08/17/2026B01396919-I1Open ↗
Showing 3 of 4 on file for this type
▸Other Documents1
▸DOB NOWProof of Historic Building1
08/13/2026B01256919-I1Open ↗