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City residence, one family
251 WARREN STREET
BROOKLYN · Downtown Brooklyn-DUMBO-Boerum Hill · BIN 3006089
💬 Discuss this project
1899Year Built
3Stories
A4Building Class
R6BZoning
3,320 sfGross Floor Area
1Units
2 Open Violations ▸
City residence, one family · 1,875 sf lot · 1.77 FAR built · Flood zone X
Locations of Work
ArchitectureStructuralMechanicalPlumbingFire ProtectionGeneral
Permit Issued — active, not yet Signed-off
Floor 3Under Construction115p · 1 filing · 20 docs
Floor 2Under Construction117p · 1 filing · 20 docs
Floor 1Under Construction119p · 1 filing · 20 docs
CellarUnder Construction123p · 1 filing · 20 docs
BasementUnder Construction120p · 1 filing · 20 docs
Site & exterior12p · 2 filings · 4 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
TOPLINE NYC CONTRACTING704/09/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
06/10/2022$3.8M—Private party → Private party$1,130/sf building
▾Design Consultants (Architect / Engineer of Record)
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
THE GREEN STUDIO203/21/2026
J A EXPEDITING2203/21/2026
MILLENNIUM DESIGNS203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
TOPLINE NYC INCGeneral Contractor1107/08/2026
CORNERSTONE CONTRACTING*General Contractor607/08/2026
TOPLINE NYC CONTRACTINGGeneral Contractor603/21/2026
GRANDEUR HILLS GROUP INCGeneral Contractor307/08/2026
M&D FIRE SPRINKLER INCFire Protection107/25/2026
AJC PLUMBING & HTG CORPPlumbing107/08/2026
GREGG NY PLUMBING, INCPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
KENDALL ENGINEERING PC4154203/27/2026
VALERIO ASSOCIATES, P.C.13791203/23/2026
Building Lifecycle
All (141)Filed (17)Permit Issued (17)Violation (7)Inspection (4)Objection (66)Special Inspection (30)
07/23/2026
Permit issued — Sprinklers
B00879132-S8-EW-SP
06/08/2026
Special inspection requirement — Footing and Foundation
JOHN VALERIO
06/08/2026
Special inspection requirement — Final
JOHN VALERIO
06/08/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
JOHN VALERIO
04/24/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
JOHN VALERIO
04/24/2026
Special inspection requirement — Permanent certificate
Otto Ruano
04/24/2026
Special inspection requirement — Insulation placement and R values
Otto Ruano
04/24/2026
Special inspection requirement — Interior lighting power
Otto Ruano
04/24/2026
Special inspection requirement — Air barrier - visual inspection
Otto Ruano
04/24/2026
Special inspection requirement — Fenestration air leakage
Otto Ruano
04/24/2026
Special inspection requirement — Fenestration and door U-factor and product ratings
Otto Ruano
04/24/2026
Special inspection requirement — Fenestration areas
Otto Ruano
04/24/2026
Special inspection requirement — Energy Code Compliance Inspections
Otto Ruano
04/20/2026
Objection resolved — Resolved
04/14/2026
Objection resolved — Addressed
04/06/2026
Objection raised — Energy
04/03/2026
Objection resolved — Addressed
04/01/2026
Objection raised — Admin
04/01/2026
Objection raised — Admin
03/27/2026
Filed — Alteration CO
STRUCTURAL WORK RELATED TO THE INTERIOR RENOVATION AND REAR YARD ADDITION TO EXISTING 3-FAMILY DWELLING. ALTERATION 1 TO CONVERT TO SINGLE-FAMILY DWELLING. NO CHANGE TO USE.
B00879132-S3
03/27/2026
Special inspection requirement — Maintenance information
KEVIN KENDALL
03/27/2026
Special inspection requirement — HVAC-R and service water piping design and insulation
KEVIN KENDALL
03/27/2026
Special inspection requirement — Permanent certificate
KEVIN KENDALL
03/27/2026
Special inspection requirement — Shutoff dampers
KEVIN KENDALL
03/27/2026
Special inspection requirement — HVAC-R and service water heating equipment
KEVIN KENDALL
03/27/2026
Special inspection requirement — Energy Code Compliance Inspections
KEVIN KENDALL
03/27/2026
Special inspection requirement — Structural Steel - Details
JOHN VALERIO
03/27/2026
Special inspection requirement — Structural Steel - High Strength Bolting
JOHN VALERIO
03/27/2026
Special inspection requirement — Masonry
JOHN VALERIO
03/27/2026
Special inspection requirement — Post-installed Anchors
JOHN VALERIO
03/27/2026
Special inspection requirement — Structural Stability – Alterations of existing buildings
JOHN VALERIO
03/27/2026
Special inspection requirement — HVAC-R and service water heating system controls
KEVIN KENDALL
03/27/2026
Special inspection requirement — Structural Steel - Welding
JOHN VALERIO
03/27/2026
Special inspection requirement — Structural Cold-Formed Steel
JOHN VALERIO
03/27/2026
Special inspection requirement — Final
JOHN VALERIO
03/26/2026
Objection resolved — Addressed
03/24/2026
Objection raised — Scope
03/23/2026
Filed — Alteration CO
STRUCTURAL WORK RELATED TO THE INTERIOR RENOVATION AND REAR YARD ADDITION TO EXISTING 3-FAMILY DWELLING. ALTERATION 1 TO CONVERT TO SINGLE-FAMILY DWELLING. NO CHANGE TO USE.
B00879132-P6
03/23/2026
Filed — Alteration CO
STRUCTURAL WORK RELATED TO THE INTERIOR RENOVATION AND REAR YARD ADDITION TO EXISTING 3-FAMILY DWELLING. ALTERATION 1 TO CONVERT TO SINGLE-FAMILY DWELLING. NO CHANGE TO USE.
B00879132-P7
03/23/2026
Filed — Alteration CO
STRUCTURAL WORK RELATED TO THE INTERIOR RENOVATION AND REAR YARD ADDITION TO EXISTING 3-FAMILY DWELLING. ALTERATION 1 TO CONVERT TO SINGLE-FAMILY DWELLING. NO CHANGE TO USE.
B00879132-P8
03/13/2026
Special inspection requirement — Masonry
JOHN VALERIO
03/13/2026
Special inspection requirement — Final
JOHN VALERIO
03/13/2026
Special inspection requirement — Structural Steel - Details
JOHN VALERIO
02/13/2026
Inspection — Certified Storm Drainage-ST-Piping-Underground
Certified
View inspection ↗
02/13/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
02/13/2026
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
02/11/2026
Inspection — Certified Remove/Cap - work done in accordance with code
Certified
View inspection ↗
02/04/2026
Objection raised — Cost
02/04/2026
Objection resolved — Addressed
02/03/2026
Objection resolved — Addressed
02/03/2026
Objection resolved — Addressed
01/20/2026
Objection raised — Scope
01/20/2026
Objection raised — Scope
01/07/2026
Filed — Alteration CO
STRUCTURAL WORK RELATED TO THE INTERIOR RENOVATION AND REAR YARD ADDITION TO EXISTING 3-FAMILY DWELLING. ALTERATION 1 TO CONVERT TO SINGLE-FAMILY DWELLING. NO CHANGE TO USE.
B00879132-P5
12/19/2025
Objection resolved — Addressed
12/15/2025
Filed — Alteration CO
STRUCTURAL WORK RELATED TO THE INTERIOR RENOVATION AND REAR YARD ADDITION TO EXISTING 3-FAMILY DWELLING. ALTERATION 1 TO CONVERT TO SINGLE-FAMILY DWELLING. NO CHANGE TO USE.
B00879132-P4
12/05/2025
Objection raised — Admin
11/25/2025
Filed — Alteration CO
STRUCTURAL WORK RELATED TO THE INTERIOR RENOVATION AND REAR YARD ADDITION TO EXISTING 3-FAMILY DWELLING. ALTERATION 1 TO CONVERT TO SINGLE-FAMILY DWELLING. NO CHANGE TO USE.
B00879132-P3
11/20/2025
Permit issued — Plumbing
B00879132-S7-PL
10/15/2025
Permit issued — General Construction
B00879132-I1-GC
Latest 60 of 141 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSprinklersPermit IssuedM&D FIRE SPRINKLER INC07/23/2026
DOB NOWPlumbingPermit IssuedGREGG NY PLUMBING, INC11/20/2025
DOB NOWGeneral ConstructionPermit IssuedGRANDEUR HILLS GROUP INC10/15/2025
DOB NOWStructuralPermit IssuedGRANDEUR HILLS GROUP INC06/17/2025
DOB NOWConstruction FencePermit IssuedTOPLINE NYC INC06/09/2025
DOB NOWSidewalk ShedPermit IssuedTOPLINE NYC INC06/05/2025
DOB NOWGeneral ConstructionPermit IssuedGRANDEUR HILLS GROUP INC05/23/2025
DOB NOWSupported ScaffoldPermit IssuedTOPLINE NYC INC12/02/2024
DOB NOWConstruction FencePermit IssuedTOPLINE NYC INC05/02/2024
DOB NOWPlumbingPermit IssuedAJC PLUMBING & HTG CORP04/19/2024
DOB NOWFoundationPermit IssuedCORNERSTONE CONTRACTING*04/02/2024
DOB NOWGeneral ConstructionPermit IssuedCORNERSTONE CONTRACTING*04/01/2024
DOB NOWSupport of ExcavationPermit IssuedCORNERSTONE CONTRACTING*03/22/2024
DOB NOWStructuralPermit IssuedCORNERSTONE CONTRACTING*01/11/2024
DOB NOWSupported ScaffoldPermit IssuedTOPLINE NYC INC12/19/2023
DOB NOWSidewalk ShedPermit IssuedTOPLINE NYC CONTRACTING09/29/2023
DOB NOWSupported ScaffoldPermit IssuedTOPLINE NYC CONTRACTING09/29/2023
1 project · most recent 03/27/2026
Heating and Air Conditioning Systems
FiledStatusContractorScopeMake / Model / Capacity
03/27/2026Permit IssuedGRANDEUR HILLS GROUP INCHeating and Air Conditioning Systems
Heat / Cool
Mitsubishi Electric MXZ-SM48NLHZ 4 tons · Condensing Unit ×2
PKFY-P12NLMU 1 tons · Vrf Indoor ×2
PKFY-PO6NLMU 1 tons · Vrf Indoor ×2
PEFY-P18NMAU 2 tons · Vrf Indoor ×1
PEFY-P24NMAU 2 tons · Vrf Indoor ×1
PKFY-PO8NLMU 1 tons · Vrf Indoor ×1
PVFY-P24NAMU 2 tons · Vrf Indoor ×1
1 project · most recent 03/27/2026
FiledStatusContractorScope
03/27/2026Permit IssuedM&D FIRE SPRINKLER INC—
3 projects · most recent 04/09/2026
General Wiring
FiledStatusContractorScope
04/09/2026Permit IssuedMUM ELECTRICAL CORPGeneral Wiring
05/30/2024Permit IssuedRICHARD NEU—
03/26/2024Permit IssuedGRAMERCY ELECTRIC INCGeneral Wiring
1 project · most recent 03/27/2026
Steel Masonry
FiledStatusContractorScope
03/27/2026Permit IssuedRITE WAY FIRE SPINKLER CORPSteel, Masonry
2 projects · most recent 05/02/2024
Fence Scaffold Sidewalk Shed
FiledStatusContractorScope
05/02/2024Permit IssuedTOPLINE NYC INCFence
09/28/2023Permit IssuedTOPLINE NYC INCScaffold, Sidewalk Shed
▾Field Inspections (DOB CAP) — 4
DateTypeResultReport
02/13/2026Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
02/13/2026Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
02/13/2026Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
02/11/2026Certified Remove/Cap - work done in accordance with codeCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 82
DateRequirementInspectorRole
06/08/2026Footing and FoundationJOHN VALERIOprogress
06/08/2026FinalJOHN VALERIOprogress
06/08/2026Structural Stability – Alterations of existing buildingsJOHN VALERIOspecial
04/24/2026Energy Code Compliance InspectionsOtto Ruanoprogress
04/24/2026Fenestration areasOtto Ruanoenergy_progress
04/24/2026Insulation placement and R valuesOtto Ruanoenergy_progress
04/24/2026Fenestration and door U-factor and product ratingsOtto Ruanoenergy_progress
04/24/2026Fenestration air leakageOtto Ruanoenergy_progress
04/24/2026Permanent certificateOtto Ruanoenergy_progress
04/24/2026Interior lighting powerOtto Ruanoenergy_progress
04/24/2026Air barrier - visual inspectionOtto Ruanoenergy_progress
04/24/2026Structural Stability – Alterations of existing buildingsJOHN VALERIOspecial
03/27/2026Maintenance informationKEVIN KENDALLenergy_progress
03/27/2026HVAC-R and service water heating equipmentKEVIN KENDALLenergy_progress
03/27/2026HVAC-R and service water piping design and insulationKEVIN KENDALLenergy_progress
03/27/2026Energy Code Compliance InspectionsKEVIN KENDALLprogress
03/27/2026FinalJOHN VALERIOprogress
03/27/2026Structural Steel - DetailsJOHN VALERIOspecial
03/27/2026MasonryJOHN VALERIOspecial
03/27/2026Structural Steel - High Strength BoltingJOHN VALERIOspecial
03/27/2026Structural Cold-Formed SteelJOHN VALERIOspecial
03/27/2026Post-installed AnchorsJOHN VALERIOspecial
03/27/2026Structural Steel - WeldingJOHN VALERIOspecial
03/27/2026Structural Stability – Alterations of existing buildingsJOHN VALERIOspecial
03/27/2026HVAC-R and service water heating system controlsKEVIN KENDALLenergy_progress
Latest 25 of 82.
▾Documents — 144 on file (BIS + DOB NOW)
▸Plans & Drawings18
▸DOB NOWPlans/Sketch18
08/26/2026B00934528-I1Request digital key ↗
08/25/2026B01044011-I1Request digital key ↗
08/17/2026B00879132-S8Request digital key ↗
Showing 3 of 18 on file for this type
▸Zoning, Tax Lot & Property Records9
▸DOB NOWZD1: DOB Zoning Diagram5
08/13/2026B00879132-P6Open ↗
08/13/2026B00879132-P3Open ↗
08/13/2026B00879132-P1Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWZoning Exhibit form (1-5)4
08/13/2026B00879132-P6Open ↗
08/13/2026B00879132-P1Open ↗
08/13/2026B00879132-P3Open ↗
Showing 3 of 4 on file for this type
▸Seals & Professional Certifications75
▸DOB NOWSpecial Inspector Seal & Signature37
10/01/2026B00879132-S8Open ↗
09/02/2026B00879132-S2Open ↗
09/02/2026B00879132-S2Open ↗
Showing 3 of 37 on file for this type
▸DOB NOWProgress Inspector Seal & Signature21
09/02/2026B00879132-S2Open ↗
08/31/2026B00879132-P8Open ↗
08/30/2026B00879132-P1Open ↗
Showing 3 of 21 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature17
08/25/2026B01044011-I1Open ↗
08/17/2026B00879132-S7Open ↗
08/17/2026B00879132-S8Open ↗
Showing 3 of 17 on file for this type
▸Trade Schedules & Equipment4
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)4
08/13/2026B00879132-I1Open ↗
08/13/2026B00879132-P3Open ↗
08/13/2026B00879132-P6Open ↗
Showing 3 of 4 on file for this type
▸Safety & Tenant Protection6
▸DOB NOWStreet Tree Checklist5
08/13/2026B00879132-I1Open ↗
08/13/2026B00879132-P1Open ↗
08/13/2026B00879132-P3Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/13/2026B00879132-I1Open ↗
▸Environmental & Asbestos7
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form7
08/17/2026B00879132-S6Open ↗
08/17/2026B00879132-S2Open ↗
08/17/2026B00879132-S8Open ↗
Showing 3 of 7 on file for this type
▸Other Documents25
▸DOB NOWPlot Diagram9
08/13/2026B00879132-S6Open ↗
08/13/2026B00879132-S1Open ↗
08/13/2026B00879132-P7Open ↗
Showing 3 of 9 on file for this type
▸DOB NOWSite Survey: Initial5
08/13/2026B00879132-P6Open ↗
08/13/2026B00879132-P3Open ↗
08/13/2026B00879132-I1Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone5
08/13/2026B00879132-I1Open ↗
08/13/2026B00879132-P1Open ↗
08/13/2026B00879132-P3Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWProperty Ownership Certification5
08/17/2026B00879132-P6Open ↗
08/17/2026B00879132-P3Open ↗
08/17/2026B00879132-I1Open ↗
Showing 3 of 5 on file for this type
▸DOB NOWAdjoining Owners Notification1
08/13/2026B00879132-S6Open ↗