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Entity
KBRA - BlackRock
Tenant
2 projects with open permitsMANHATTAN · 3
1 building
3
Total Filings
3
Projects on File
1
Buildings Worked
2
Projects w/ Open Permits
Tenant
Primary Trade
Activity
Projects by first filing month3 projects all-time
0112Jan '26 · 1Apr '26 · 1Jun '26 · 1Jan '26Feb '26Mar '26Apr '26May '26Jun '26
bars = month · line = 3-mo average
Portfolio status
Browse projects →
Open permit267%
Filed only133%
By project type
Alteration3
Most active buildings
All buildings →
51 WEST 52 STREETMANHATTAN · 2 open · latest 07/13/2026
3 projects
Key relationships
Everyone →
Design firms
3 projects
3 projects
Filing representatives
3 projects
Owners
3 projects
Most recent projects
All projects →
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01401726 ↗51 WEST 52 STREET
MANHATTAN
AlterationPermit Issued06/03/202607/13/2026
Design FMC ENGINEERING
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor DK CONSTRUCTION ONE, CORP
Filer BURNHAM NATIONWIDE INC
Modifications to the existing Sprinkler system on the 13th and 14th floor as per plans submitted herewith. No Change to Use, Occupancy Group…
M01354579 ↗51 WEST 52 STREET
MANHATTAN
AlterationFiled — no permit on record04/21/2026—
Design VOCON
Owner HARBOR GROUP MANAGEMENT COMPANY
Filer BURNHAM NATIONWIDE INC
—
M01335906 ↗51 WEST 52 STREET
MANHATTAN
AlterationPermit Issued01/28/202602/18/2026
Design VOCON
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor DK CONSTRUCTION ONE, CORP
Filer BURNHAM NATIONWIDE INC
Plumbing and Sprinkler Demo and installation of Temp Sprinkler Loop on the 2nd floor as per plans submitted herewith. No Change to Use, Occu…
Counts cover all 3 projects (3 DOB NOW). Dated by first filing; BIS projects by first permit issuance.
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
FMC ENGINEERING306/26/2026
VOCON306/26/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
DEPENDABLE MECH CORP206/26/2026
DEPENDABLE MECHANICAL COR206/26/2026
DK CONSTRUCTION ONE, CORP206/26/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
HARBOR GROUP MANAGEMENT306/26/2026
Who this entity's projects were filed with. Top 25 per group by shared jobs.
NameProjects togetherMost recent
BURNHAM NATIONWIDE INC306/26/2026
3 DOB NOW projects, anchored the same way as Buildings Worked. Status is the project's permit state today: open = at least one permit currently issued. BIS projects show their raw permit status and are not counted as open.
All 3Open permit 2Filed only 1
3 projects
ProjectAddressTypeStatusFiledLatest permitOn the projectDescription
M01401726 ↗51 WEST 52 STREET
MANHATTAN
AlterationPermit Issued06/03/202607/13/2026
Design FMC ENGINEERING
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor DK CONSTRUCTION ONE, CORP
Filer BURNHAM NATIONWIDE INC
Modifications to the existing Sprinkler system on the 13th and 14th floor as per plans submitted herewith. No Change to Use, Occupancy Group…
M01354579 ↗51 WEST 52 STREET
MANHATTAN
AlterationFiled — no permit on record04/21/2026—
Design VOCON
Owner HARBOR GROUP MANAGEMENT COMPANY
Filer BURNHAM NATIONWIDE INC
—
M01335906 ↗51 WEST 52 STREET
MANHATTAN
AlterationPermit Issued01/28/202602/18/2026
Design VOCON
Owner HARBOR GROUP MANAGEMENT COMPANY
Contractor DK CONSTRUCTION ONE, CORP
Filer BURNHAM NATIONWIDE INC
Plumbing and Sprinkler Demo and installation of Temp Sprinkler Loop on the 2nd floor as per plans submitted herewith. No Change to Use, Occu…
Click a row for this entity's own projects, plans and documents at that building.
BuildingFilingsMost Recent
51 WEST 52 STREET ↗306/26/2026
▾Documents — 53 on file (BIS + DOB NOW)
▸Plans & Drawings11
▸DOB NOWPlans/Sketch11
08/19/2026M01335906-S2 · 51 WEST 52 STREETRequest digital key ↗
08/19/2026M01335906-S1 · 51 WEST 52 STREETRequest digital key ↗
08/19/2026M01335906-I1 · 51 WEST 52 STREETRequest digital key ↗
Showing 3 of 11 on file for this type
▸Applications & Permits9
▸DOB NOWLPC Approval/Permit9
08/17/2026M01354579-S1 · 51 WEST 52 STREETOpen ↗
08/17/2026M01354579-I1 · 51 WEST 52 STREETOpen ↗
08/17/2026M01354579-S2 · 51 WEST 52 STREETOpen ↗
Showing 3 of 9 on file for this type
▸Seals & Professional Certifications21
▸DOB NOWDPL-1: Design Professional Seal & Signature11
08/19/2026M01335906-S2 · 51 WEST 52 STREETOpen ↗
08/19/2026M01335906-S1 · 51 WEST 52 STREETOpen ↗
08/19/2026M01335906-I1 · 51 WEST 52 STREETOpen ↗
Showing 3 of 11 on file for this type
▸DOB NOWProgress Inspector Seal & Signature5
09/01/2026M01335906-I1 · 51 WEST 52 STREETOpen ↗
08/31/2026M01354579-I1 · 51 WEST 52 STREETOpen ↗
08/29/2026M01401726-S1 · 51 WEST 52 STREETOpen ↗
Showing 3 of 5 on file for this type
▸DOB NOWSpecial Inspector Seal & Signature5
09/01/2026M01335906-I1 · 51 WEST 52 STREETOpen ↗
08/31/2026M01354579-I1 · 51 WEST 52 STREETOpen ↗
08/29/2026M01401726-S1 · 51 WEST 52 STREETOpen ↗
Showing 3 of 5 on file for this type
▸Environmental & Asbestos11
▸DOB NOWDEP ACP-5: Asbestos Assessment Report11
08/19/2026M01335906-S1 · 51 WEST 52 STREETOpen ↗
08/19/2026M01335906-I1 · 51 WEST 52 STREETOpen ↗
08/19/2026M01335906-S2 · 51 WEST 52 STREETOpen ↗
Showing 3 of 11 on file for this type
▸Other Documents1
▸DOB NOWProof of Historic Building1
08/13/2026M01335906-I1 · 51 WEST 52 STREETOpen ↗