HELLMUTH OBATA & KASSABAUM PC
Architecture firm · New York City permit activity
Architecture firm active in New York City construction, tracked from public building-permit filings.
#1464
by NYC filing activity
among NYC architects & engineers, last 90 days
2
projects tracked
Mar 2026 to Jun 2026
4/16
active weeks
weeks with a filing (last 16)
2 of the 2 Hellmuth Obata & Kassabaum projects have no general contractor named on permit.
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Brooklyn new building
Grade AFiled 1 month ago · 4 filings · 1,008,700 sq ft · Hellmuth Obata & Kassabaum: engineer
SOE for the new underground tunnel adjacent to the new building. Refer to -Y6 for related foundation plans
No GC named · 2 engineers identified · 3 anticipated categories not yet filed
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$1.1M Manhattan renovation
Grade A+Filed 2 months ago · 2 filings · 6,000 sq ft · Hellmuth Obata & Kassabaum: architect
LMH OB 6fl: MODIFICATION OF INTERIOR PARTITIONS AND FINISHES TO ACCOMMODATE ALTERATIONS WITHIN THE EXISTING HOSPITAL BUILDING NO CHANGE TO…
No GC named · Engineer identified · 8 anticipated categories not yet filed
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Neighborhood, filing date, scope and declared value are shown here. Exact addresses,
owner and contact details and full filing histories are part of the paid product.
2 project records for Hellmuth Obata & Kassabaum: addresses, values, project teams
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Most recent filing: Brooklyn · Jun 16, 2026
2 active · 1 newly observed last 90 days
Filing activity · last 16 weeks
MAR
APR
MAY
JUN
JUL
2
active projects (last 90d)
1
newly observed (last 90d)
Jun 2026
peak month
Project mix · by use
Other100%
Geography · by borough
Brooklyn50%
Manhattan50%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | LANGAN ENGINEERING, ENVIRONMENTAL, | Engineering | 1 | |
| 2 | SYSKA HENNESSY GROUP | Engineering | 1 | |
| 3 | COSENTINI ASSOCIATES | Engineering | 1 | |
| None on shared filings. | ||||
Firms that appear on the same New York City permit filings. Association on shared filings, not a proven working relationship.
Frequently asked questions
How many NYC projects has HELLMUTH OBATA & KASSABAUM PC filed?▾
PermitPipeline tracks 2 New York City building-permit projects for HELLMUTH OBATA & KASSABAUM PC (Mar 2026 to Jun 2026). 2 had filing activity in the last 90 days.
Does HELLMUTH OBATA & KASSABAUM PC work on commercial or residential projects?▾
Across its tracked New York City filings, 0% of HELLMUTH OBATA & KASSABAUM PC's projects are commercial and 0% are residential (multifamily, small residential, or single-family). Based on permit records, not self-reported.
Where in New York City does HELLMUTH OBATA & KASSABAUM PC work?▾
50% of HELLMUTH OBATA & KASSABAUM PC's tracked New York City projects are in Brooklyn.
What is a typical HELLMUTH OBATA & KASSABAUM PC project worth?▾
Across the 1 tracked projects with a declared value, HELLMUTH OBATA & KASSABAUM PC averages $1.1M per project (declared value on the permit filing, not contract value).
Which firms does HELLMUTH OBATA & KASSABAUM PC work with most often?▾
HELLMUTH OBATA & KASSABAUM PC most frequently appears on the same New York City permit filings as SYSKA HENNESSY GROUP, LANGAN ENGINEERING, ENVIRONMENTAL,, COSENTINI ASSOCIATES. Appearing together indicates association on shared filings, not a proven working relationship.
Is HELLMUTH OBATA & KASSABAUM PC an architecture firm?▾
HELLMUTH OBATA & KASSABAUM PC is listed as an architecture firm on its New York City permit filings. Roles on this profile are derived from the role each firm holds on public DOB filings.
Public aggregate — full project records are part of the paid leads product. Updated daily from NYC DOB filings.
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