Ennead Architects

What Ennead Architects does

Ennead Architects is a New York-based architecture firm founded in 1963 by James Stewart Polshek (originally as Polshek Partnership Architects, rebranded to Ennead in 2012) that designs institutional buildings across higher education, healthcare, cultural and performing arts, civic and government, and commercial and mixed-use typologies. The firm serves a roster of blue-chip institutional clients including New York University (a 25-year partnership spanning more than a dozen projects), Stanford University, Princeton University, Cornell, Johns Hopkins, Memorial Sloan Kettering, NYU Langone Health, Inova Health System, the U.S. Department of State, Huawei, ByteDance, and The Public Theater. Notable projects include the Shanghai Astronomy Museum (world's largest astronomy-dedicated museum, AIA National Honor Award for Architecture 2025), the Edelman Fossil Park & Museum (New Jersey's largest public net-zero facility, Living Building Challenge), MSK David H. Koch Center for Cancer Care, and the revitalized Delacorte Theater in Central Park.

The firm operates from three offices — New York (HQ at 1 World Trade Center), Shanghai (opened 2012, the firm's Asia-Pacific platform), and Los Angeles (the historic Bradbury Building) — and employs approximately 200 staff. Underlying technical capabilities center on industry-standard architectural design tooling (BIM, parametric modeling, performance simulation) augmented by Ennead Lab (e-Lab), an internal research, development, and advocacy initiative focused on sustainability, advanced manufacturing (3D printing, AMAD 2025), smart-grid systems, and urban resilience. Project work routinely achieves LEED Platinum, Gold, and Silver certifications and targets net-zero, Living Building Challenge, and WELL standards.

The business model is professional services on a project-by-project fee basis. Revenue is generated from architectural design commissions negotiated against scope and complexity, with significant repeat work from long-tenured institutional clients and a meaningful share of new business sourced through international design competitions (e.g., Shanghai Astronomy Museum, Johns Hopkins Bloomberg Center). Distribution is direct enterprise field sales to institutional decision-makers (university presidents and provosts, hospital C-suites, museum directors, federal agencies), supplemented by earned media, industry awards, and thought-leadership channels. In April 2026, Ennead was acquired by CannonDesign — one of the world's largest employee-owned architecture and planning firms and CannonDesign's seventh and largest merger — with Ennead continuing to operate as an independent studio within the combined organization. The merged entity's strategic posture is shifting from short-term project relationships toward a "3 to 30" long-term institutional engagement model.

Name

Ennead Architects

Legal name

Ennead Architects

Website

https://ennead.com

Company type

Private

Founded year

1963

Operating status

Operating

Headcount range

101–250 employees

Short description

Ennead Architects is a New York-based architecture firm founded in 1963 that designs institutional buildings across higher education, healthcare, cultural, civic, and commercial sectors for clients including NYU, Stanford, Princeton, and the U.S. State Department, operating from New York, Shanghai, and Los Angeles.

Ownership category

akta.pro rank

Product category

Architectural Design Services

NAICS

Architectural Services (541310), Interior Design Services (54141)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industry

Interior Design Services (BPAHAKAB)

Keywords

• Architecture design services
• Higher education facilities
• Healthcare architecture
• Cultural institution design
• Sustainable building design

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Architecture and Design Services: Ennead Architects generates revenue through fees for architectural and design services on a project basis. Projects span new construction, renovation, expansion, and master planning across education, healthcare, civic, cultural, and commercial building typologies. Revenue is project-based, driven by the value and scope of each commission.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Ennead Architects is a full-service architecture and design firm providing architectural services across civic, commercial, cultural, educational, healthcare, and mixed-use sectors. The firm delivers new construction, renovation, expansion, and master planning services for institutional clients including universities, healthcare systems, cultural institutions, and government agencies, with integrated sustainable design and high-performance building expertise.

Product overview

Ennead Architects is an architecture and design firm (not a software product company) offering architectural design services across multiple sectors including Civic & Government, Commercial & Mixed-Use, Cultural & Performing Arts, Education, Healthcare, Interiors, Master Planning, and Renovations & Expansions. The firm operates as a single unified service offering rather than a platform-plus-modules architecture. Their portfolio includes buildings such as museums (Edelman Fossil Park & Museum, Shanghai Astronomy Museum), performing arts venues (Delacorte Theater, Holland Performing Arts Center), higher education facilities (Stanford University, Princeton University, NYU Langone), healthcare facilities (NYU Langone Health Kimmel Pavilion, MSK Koch Center), and commercial/life science buildings (Cambridge Crossing: 441 Morgan Avenue). The firm also operates Ennead Lab (e-Lab), a research, development, and advocacy initiative focused on advancing critical narratives and ideas supporting a just and sustainable world.

Differentiator

Problem solved

Functional benefit

Products and services

• Architectural Design Services
• Ennead Lab (e-Lab)

Quantifiable outcome

• Edelman Fossil Park & Museum achieves net-zero energy: 100% of energy from green grid and on-site renewables, no fossil fuels combusted on-site, New Jersey's largest public net zero facility
• +4 more outcomes

Named customers19 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• CannonDesigncoreStrategic or Co-development Partner · 21 April 2026In April 2026, CannonDesign — one of the world's largest employee-owned architecture and planning firms — announced the acquisition of Ennead Architects. The merger is CannonDesign's seventh and largest, giving the combined firm its first Asian presence through Ennead's Shanghai office. The merger aims to shift both firms from short-term project relationships to a '3 to 30' client engagement model, leveraging shared culture and deeper institutional knowledge. Ennead continues as an independent studio post-merger, retaining its identity, design culture, and leadership.

Scale indicators5 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• HOK: HOK is a global architecture, engineering, and planning firm with strong healthcare, education, and civic practices. Its scale and integrated delivery model make it a close peer on large institutional master planning and design commissions.
• CannonDesign: CannonDesign acquired Ennead in 2026 and is described as one of the world's largest employee-owned architecture and planning firms. It shares Ennead's employee-ownership model, healthcare/education focus, and culture-driven practice, making it the closest operational peer.
• Perkins&Will: Perkins&Will is a large, employee-owned architecture practice with leading healthcare and higher education practices and a strong sustainability commitment (LEED-centric). It is a direct competitor for the same institutional clients Ennead serves.
• HKS: HKS is a leading architecture firm with one of the largest healthcare practices in the U.S. and growing higher education work, competing directly with Ennead for hospital systems and university research facilities.
• Kohn Pedersen Fox (KPF): KPF is a New York-headquartered global architecture firm with deep higher education, commercial, and cultural work. It competes head-to-head with Ennead on university master planning and large urban infill projects.
• Skidmore, Owings & Merrill (SOM): SOM is one of the world's largest architecture, engineering, and urban planning firms, with comparable institutional, cultural, healthcare, and government clients. It competes directly with Ennead on iconic cultural and civic commissions and shares the same large-scale, sustainability-led design ethos.

Emerging players

• Snøhetta: Snøhetta is a global architecture and design practice with iconic cultural and civic projects. It is comparable to Ennead as a design-led firm competing for landmark cultural and educational commissions internationally.
• Bjarke Ingels Group (BIG): BIG is a globally recognized design firm known for cultural, civic, and tech campus work; selected alongside Ennead for AMAD 2025. It competes on iconic cultural commissions and shares a research/design-forward identity.
• Renzo Piano Building Workshop: RPBW is a globally recognized architecture firm known for museum and cultural commissions. It competes with Ennead on international cultural architecture and shared the Shanghai Astronomy Museum competition circuit.
• Diller Scofidio + Renfro: DS+R is a New York-based design studio renowned for cultural and institutional projects. It competes with Ennead on signature cultural commissions and shares the research-driven, e-Lab-like practice model.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/1127809
• Instagraminstagram.com/enneadarchitects
• Xx.com/enneadarch
• Facebookfacebook.com/enneadarchitects

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ennead Architects