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Five to six families
897 KNICKERBOCKER AVENUE
BROOKLYN · BIN 3079803
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1910Year Built
2Stories
C2Building Class
R6Zoning
4,503 sfGross Floor Area
6Units
Rent Stabilized0 Open ViolationsFDNY Report ↗
Five to six families · Owner of record: TOWNHOUSE RENTAL V, L.L.C. · 2,000 sf lot · 2.25 FAR built · Flood zone X
Locations of Work
ArchitectureStructural
Roof25p · 1 filing · 20 docs
Floor 425p · 2 filings · 20 docs
Floor 323p · 1 filing · 20 docs
Floor 224p · 1 filing · 20 docs
Floor 123p · 2 filings · 20 docs
Cellar24p · 1 filing · 20 docs
▾Owner History (Filing Record)
Companies and organizations named on filings. Individual owners are not shown.
OwnerFilingsMost Recent
UNIVERSAL SYSTEMS INC.503/22/2026
TOWNHOUSE RENTAL V, L.L.C.203/22/2026
897 ON LLC303/22/2026
▾Sales History (ACRIS)
DatePriceUnitSeller → Buyer$/sf
09/27/2023$3.8M—897 ON LLC → TOWNHOUSE RENTAL II, L.L.C.$844/sf building
12/17/2020$810K—— → —$180/sf building
▾Design Consultants (Architect / Engineer of Record)
FirmFilingsMost Recent
L & C ASSOCIATES807/25/2023
HSU & ASSOCIATES203/08/2023
NAVI STRUCTURAL ENGINEERING, PLLC105/31/2022
OPTIPLOT ENGINEERING PLLC212/01/2021
▾Filing Representatives (Expediters)
RepresentativeFilingsMost Recent
L&C ASSOCIATES1003/21/2026
BUILD TEAM403/21/2026
EUROCELT EXPEDITING, INC203/21/2026
▾Contractors (License-Anchored)
FirmTradeRolesMost Recent
HP BUILDING MANAGEMENT INGeneral Contractor907/08/2026
UNIVERSAL SYSTEMS INCGeneral Contractor303/21/2026
LIT MODE ELECL CONTG INCElectrical203/22/2026
JEM FIRE PREVENTION INCFire Protection107/08/2026
EH PLUMBING & HEATING CORPlumbing107/08/2026
▾Special Inspection Agencies
AgencyLicense #FilingsMost Recent
YAN ENGINEERING PLLC78511107/25/2023
Building Lifecycle
All (107)Filed (13)Permit Issued (8)Signed Off (7)Violation (3)Inspection (12)Objection (34)Special Inspection (30)
08/07/2023
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
07/28/2023
Special inspection requirement — Fire-Resistant Penetrations and Joints
SHI YAN
07/28/2023
Special inspection requirement — Insulation placement and R values
SHI YAN
07/28/2023
Special inspection requirement — Fenestration air leakage
SHI YAN
07/28/2023
Special inspection requirement — Metering
SHI YAN
07/28/2023
Special inspection requirement — Fenestration areas
SHI YAN
07/28/2023
Special inspection requirement — Lighting controls
SHI YAN
07/28/2023
Special inspection requirement — Air barrier - visual inspection
SHI YAN
07/28/2023
Special inspection requirement — Maintenance information
SHI YAN
07/28/2023
Special inspection requirement — Air barrier — testing
SHI YAN
07/28/2023
Special inspection requirement — Fenestration and door U-factor and product ratings
SHI YAN
07/28/2023
Special inspection requirement — Private On-Site Storm Water Disposal Systems-, and Detention Facilities, Installation
SHI YAN
07/28/2023
Special inspection requirement — Interior lighting power
SHI YAN
07/28/2023
Special inspection requirement — Air barrier continuity plan testing
SHI YAN
07/28/2023
Special inspection requirement — Lighting in dwelling units
SHI YAN
07/28/2023
Special inspection requirement — Energy Code Compliance Inspections
SHI YAN
07/28/2023
Special inspection requirement — Protection of exposed foundation insulation
SHI YAN
07/28/2023
Special inspection requirement — Fire-Resistance Rated Construction
SHI YAN
07/28/2023
Special inspection requirement — Exterior lighting power
SHI YAN
07/25/2023
Filed — ALT-CO - New Building with Existing Elements to Remain
SUBSEQUENT FILING STRUCTURE WORK FOR VERTICAL ONE (1)-STORY ENLARGEMENT ON EXISTING THREE (3)-STORY BUILDING IN CONJUNCTION WITH ALT-CO JOB # B00481228
B00481228-P2
07/13/2023
Special inspection requirement — Air barrier - visual inspection
SHI YAN
07/13/2023
Special inspection requirement — Insulation placement and R values
SHI YAN
07/13/2023
Special inspection requirement — Metering
SHI YAN
07/13/2023
Special inspection requirement — Maintenance information
SHI YAN
07/13/2023
Special inspection requirement — Fenestration air leakage
SHI YAN
07/13/2023
Special inspection requirement — Fenestration areas
SHI YAN
07/13/2023
Special inspection requirement — Fenestration and door U-factor and product ratings
SHI YAN
07/13/2023
Special inspection requirement — Lighting in dwelling units
SHI YAN
07/13/2023
Special inspection requirement — Interior lighting power
SHI YAN
07/13/2023
Special inspection requirement — Fire-Resistance Rated Construction
SHI YAN
07/13/2023
Special inspection requirement — Energy Code Compliance Inspections
SHI YAN
07/13/2023
Special inspection requirement — Private On-Site Storm Water Disposal Systems-, and Detention Facilities, Installation
SHI YAN
03/10/2023
Signed off — Alteration
PROPOSED MECHANICAL SYSTEM FOR THE ENLARGEMENT FOUR-STORY BUILDING.
B00498428-I1
03/08/2023
Filed — Alteration
PROPOSED MECHANICAL SYSTEM FOR THE ENLARGEMENT FOUR-STORY BUILDING.
B00498428-P3
03/04/2023
Signed off — ALT-CO - New Building with Existing Elements to Remain
SUBSEQUENT FILING STRUCTURE WORK FOR VERTICAL ONE (1)-STORY ENLARGEMENT ON EXISTING THREE (3)-STORY BUILDING IN CONJUNCTION WITH ALT-CO JOB # B00481228
B00481228-S1
01/12/2023
Filed — Alteration
PROPOSED MECHANICAL SYSTEM FOR THE ENLARGEMENT FOUR-STORY BUILDING.
B00498428-P1
01/05/2023
Signed off — ALT-CO - New Building with Existing Elements to Remain
SUBSEQUENT FILING STRUCTURE WORK FOR VERTICAL ONE (1)-STORY ENLARGEMENT ON EXISTING THREE (3)-STORY BUILDING IN CONJUNCTION WITH ALT-CO JOB # B00481228
B00481228-S2
01/04/2023
Inspection — Pass-Final CND-Occupancy Inspection
Pass
View inspection ↗
12/29/2022
Signed off — Alteration
PROVIDE PLUMBING SYSTEM THROUGHOUT THE ENLARGEMENT FOUR -STORY BUILDING.
B00498439-I1
12/29/2022
Signed off — Alteration
PROVIDE SPRINKLER SYSTEM THROUGHOUT THE ENLARGEMENT FOUR-STORY BUILDING.
B00498437-I1
12/29/2022
Signed off — Alteration
B00498419-I1
12/14/2022
Inspection — Fail-Final CND-Occupancy Inspection
Fail
View inspection ↗
12/07/2022
Inspection — Fail-Final CND-Occupancy Inspection
Fail
View inspection ↗
11/30/2022
Inspection — Certified Water and Sanitary-WS-Fixtures-Finish
Certified
View inspection ↗
10/26/2022
Objection resolved — Addressed
10/19/2022
Objection resolved — Addressed
10/05/2022
Objection raised — Accessibility
10/05/2022
Objection raised — Scope
10/04/2022
Filed — ALT-CO - New Building with Existing Elements to Remain
SUBSEQUENT FILING STRUCTURE WORK FOR VERTICAL ONE (1)-STORY ENLARGEMENT ON EXISTING THREE (3)-STORY BUILDING IN CONJUNCTION WITH ALT-CO JOB # B00481228
B00481228-P1
08/22/2022
Signed off — Alteration
INSTALLATION OF A HEAVY DUTY SIDEWALK SHED AS PER PLANS DURING GENERAL CONSTRUCTION WORK. NO CHANGE IN USE, EGRESS OR OCCUPANCY. SIDEWALK SHED TO COMPLY WITH CHAPTER 33 OF NYC BUILDING CODE OF 2014.
B00746404-I1
07/25/2022
Inspection — Certified Storm Drainage-ST-Piping-Roughing
Certified
View inspection ↗
07/25/2022
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Roughing
Certified
View inspection ↗
05/31/2022
Filed — Alteration
INSTALLATION OF A HEAVY DUTY SIDEWALK SHED AS PER PLANS DURING GENERAL CONSTRUCTION WORK. NO CHANGE IN USE, EGRESS OR OCCUPANCY. SIDEWALK SHED TO COMPLY WITH CHAPTER 33 OF NYC BUILDING CODE OF 2014.
B00746404-I1
05/31/2022
Permit issued — Sidewalk Shed
B00746404-I1-SH
05/26/2022
Permit issued — Sprinklers
B00498437-I1-EW-SP
05/11/2022
Inspection — Certified Storm Drainage-ST-Piping-Underground
Certified
View inspection ↗
05/11/2022
Inspection — Certified Water and Sanitary-WS-Sanitary Piping-Underground
Certified
View inspection ↗
04/28/2022
Permit issued — Plumbing
B00498439-I1-PL
04/26/2022
Filed — Alteration
PROVIDE SPRINKLER SYSTEM THROUGHOUT THE ENLARGEMENT FOUR-STORY BUILDING.
B00498437-P1
04/05/2022
Inspection — Pass-Final PL - Up to 3 Requested Floors
Pass
View inspection ↗
Latest 60 of 107 events.
Permit / Filing Register
SourceWork TypeStatusApplicantIssued
DOB NOWSidewalk ShedSigned-offUNIVERSAL SYSTEMS INC05/31/2022
DOB NOWSprinklersSigned-offJEM FIRE PREVENTION INC05/26/2022
DOB NOWPlumbingSigned-offEH PLUMBING & HEATING COR04/28/2022
DOB NOWFoundationSigned-offANGELINE PENA-LEVI03/10/2022
DOB NOWStructuralSigned-offANGELINE PENA-LEVI02/18/2022
DOB NOWMechanical SystemsSigned-offANGELINE PENA-LEVI02/10/2022
DOB NOWGeneral ConstructionPermit IssuedANGELINE PENA-LEVI02/04/2022
DOB NOWConstruction FenceSigned-offANGELINE PENA-LEVI12/14/2021
3 projects · most recent 04/03/2023
General Wiring
FiledStatusContractorScope
04/03/2023CompleteLIT MODE ELECL CONTG INCGeneral Wiring
03/21/2023CompleteLIT MODE ELECL CONTG INCGeneral Wiring
05/24/2022CompleteTOP SHELF ELECTRIC CORP—
1 project · most recent 07/25/2023
Masonry
FiledStatusContractorScope
07/25/2023Signed-offHP BUILDING MANAGEMENT INMasonry
▾Field Inspections (DOB CAP) — 12
DateTypeResultReport
08/07/2023Pass-Final CND-Occupancy InspectionPassView ↗
01/04/2023Pass-Final CND-Occupancy InspectionPassView ↗
12/14/2022Fail-Final CND-Occupancy InspectionFailView ↗
12/07/2022Fail-Final CND-Occupancy InspectionFailView ↗
11/30/2022Certified Water and Sanitary-WS-Fixtures-FinishCertifiedView ↗
07/25/2022Certified Storm Drainage-ST-Piping-RoughingCertifiedView ↗
07/25/2022Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
05/11/2022Certified Storm Drainage-ST-Piping-UndergroundCertifiedView ↗
05/11/2022Certified Water and Sanitary-WS-Sanitary Piping-UndergroundCertifiedView ↗
04/05/2022Pass-Final PL - Up to 3 Requested FloorsPassView ↗
03/23/2022Certified Gas-Gas-Piping-RoughingCertifiedView ↗
03/23/2022Certified Water and Sanitary-WS-Sanitary Piping-RoughingCertifiedView ↗
▾Special Inspection Requirements (DOB NOW) — 63
DateRequirementInspectorRole
07/28/2023Air barrier continuity plan testingSHI YANenergy_progress
07/28/2023Air barrier — testing SHI YANenergy_progress
07/28/2023Lighting controlsSHI YANenergy_progress
07/28/2023Fenestration air leakageSHI YANenergy_progress
07/28/2023Maintenance informationSHI YANenergy_progress
07/28/2023Exterior lighting powerSHI YANenergy_progress
07/28/2023Fire-Resistant Penetrations and JointsSHI YANspecial
07/28/2023Air barrier - visual inspectionSHI YANenergy_progress
07/28/2023Interior lighting powerSHI YANenergy_progress
07/28/2023MeteringSHI YANenergy_progress
07/28/2023Fenestration and door U-factor and product ratingsSHI YANenergy_progress
07/28/2023Fenestration areasSHI YANenergy_progress
07/28/2023Protection of exposed foundation insulationSHI YANenergy_progress
07/28/2023Insulation placement and R valuesSHI YANenergy_progress
07/28/2023Lighting in dwelling unitsSHI YANenergy_progress
07/28/2023Energy Code Compliance InspectionsSHI YANprogress
07/28/2023Fire-Resistance Rated ConstructionSHI YANprogress
07/28/2023Private On-Site Storm Water Disposal Systems-, and Detention Facilities, InstallationSHI YANspecial
07/13/2023Fenestration air leakageSHI YANenergy_progress
07/13/2023Fire-Resistant Penetrations and JointsSHI YANspecial
07/13/2023Private On-Site Storm Water Disposal Systems-, and Detention Facilities, InstallationSHI YANspecial
07/13/2023Energy Code Compliance InspectionsSHI YANprogress
07/13/2023Fire-Resistance Rated ConstructionSHI YANprogress
07/13/2023Interior lighting powerSHI YANenergy_progress
07/13/2023Fenestration areasSHI YANenergy_progress
Latest 25 of 63.
▾Documents — 110 on file (BIS + DOB NOW)
▸Plans & Drawings13
▸DOB NOWPlans/Sketch13
09/01/2026B00498419-I1Request digital key ↗
08/31/2026B00481228-P2Request digital key ↗
08/31/2026B00481228-S2Request digital key ↗
Showing 3 of 13 on file for this type
▸Applications & Permits4
▸BISBPP-5 - Authorization to the Department of Transportation2
09/21/2022340815899Open ↗
12/28/2021340815899Open ↗
▸BISPLAN / WORK APPROVAL APPLICATION1
09/21/2022340815899Open ↗
▸BISBPP-DOT: SIDEWALK/CURB/ROAD WORK PERMITS1
12/22/2022340815899Open ↗
▸Zoning, Tax Lot & Property Records7
▸DOB NOWZD1: DOB Zoning Diagram3
08/13/2026B00481228-P2Open ↗
08/13/2026B00481228-I1Open ↗
08/13/2026B00481228-P1Open ↗
▸DOB NOWZoning Exhibit form (1-5)3
08/13/2026B00481228-I1Open ↗
08/13/2026B00481228-P1Open ↗
08/13/2026B00481228-P2Open ↗
▸DOB NOWHouse Number Verification: TOPO Stamp1
08/13/2026B00481228-I1Open ↗
▸Seals & Professional Certifications40
▸DOB NOWProgress Inspector Seal & Signature16
08/31/2026B00498428-P1Open ↗
08/31/2026B00498428-P3Open ↗
08/30/2026B00481228-P2Open ↗
Showing 3 of 16 on file for this type
▸DOB NOWDPL-1: Design Professional Seal & Signature13
08/28/2026B00498428-P3Open ↗
08/28/2026B00498428-I1Open ↗
08/28/2026B00498428-P1Open ↗
Showing 3 of 13 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature9
08/31/2026B00498428-P1Open ↗
08/31/2026B00498428-P3Open ↗
08/30/2026B00481228-P2Open ↗
Showing 3 of 9 on file for this type
▸BISAPPLICANT OWNER SIGNATURE1
12/28/2021340815899Open ↗
▸BISTECHNICAL REPORT STATEMENT OF RESPONSIBILITY1
03/18/2022340815899Open ↗
▸Trade Schedules & Equipment4
▸DOB NOWDEP: Sewer Certification (Sanitary/Storm)4
08/13/2026B00481228-P2Open ↗
08/13/2026B00481228-I1Open ↗
08/13/2026B00481228-P1Open ↗
Showing 3 of 4 on file for this type
▸Safety & Tenant Protection5
▸BISSTREET TREES: RECEIPT OF STREET TREES SITE PLAN1
12/28/2021340815899Open ↗
▸BISBPP: STREET TREES SITE PLAN1
12/28/2021340815899Open ↗
▸DOB NOWParks Department Acknowledgment Letter for Street Trees Plan1
08/13/2026B00481228-I1Open ↗
▸DOB NOWStreet Tree Sign Off1
08/13/2026B00481228-I1Open ↗
▸DOB NOWStreet Trees Site Plan1
08/13/2026B00481228-I1Open ↗
▸Environmental & Asbestos6
▸DOB NOWDEP ACP-20/ACP-21: Asbestos Project Conditional Completion Form/Asbestos Project Completion Form6
08/28/2026B00498428-I1Open ↗
08/13/2026B00481228-S1Open ↗
08/13/2026B00481228-S2Open ↗
Showing 3 of 6 on file for this type
▸Energy Compliance3
▸DOB NOWEN2: As Built Energy Analysis.3
08/13/2026B00498439-I1Open ↗
08/13/2026B00481228-I1Open ↗
08/13/2026B00498428-I1Open ↗
▸Inspections & Test Reports3
▸DOB NOWTR4 Test Report and Plot Diagram1
08/13/2026B00481228-S2Open ↗
▸DOB NOWSOIL REPORT1
08/13/2026B00481228-S2Open ↗
▸DOB NOWTR4 Plot Diagram1
08/13/2026B00481228-S2Open ↗
▸Approvals, Objections & Sign-offs1
▸BISBPP-8 - Request Items for Builders Pavement Plan Signoff1
12/22/2022340815899Open ↗
▸Cost, Insurance & Ownership3
▸BISBPP-11 - Affidavit as to Roadway Pavement And/Or Sidewalk and Curb Construction1
12/22/2022340815899Open ↗
▸DOB NOWCertificate of Insurance1
08/13/2026B00481228-I1Open ↗
▸DOB NOWCertification by Insurance Broker or Agency1
08/13/2026B00481228-I1Open ↗
▸Filing & Intake Forms3
▸BISADDITIONAL INFORMATION1
12/28/2021340815899Open ↗
▸BISBPP: CHECKLIST IN LIEU OF PLANS-ALT31
12/28/2021340815899Open ↗
▸BISEFILING JOB APPLICATION COVER SHEET1
03/18/2022340815899Open ↗
▸Other Documents18
▸BISBPP - SUPPORTING DOCUMENTATION10
12/22/2022340815899Open ↗
12/22/2022340815899Open ↗
12/22/2022340815899Open ↗
Showing 3 of 10 on file for this type
▸DOB NOWSite Survey: Initial3
08/13/2026B00481228-P1Open ↗
08/13/2026B00481228-I1Open ↗
08/13/2026B00481228-P2Open ↗
▸DOB NOWLocal Law 92/94 of 2019 Sustainable Roof Zone3
08/13/2026B00481228-P2Open ↗
08/13/2026B00481228-P1Open ↗
08/13/2026B00481228-I1Open ↗
▸DOB NOWAdditional Insured Authorizations1
08/13/2026B00481228-I1Open ↗
▸DOB NOWFinal Survey1
08/13/2026B00481228-I1Open ↗