# Architecture and Planning companies headquartered in New York

Tamtam tracks 55 Architecture and Planning companies headquartered in New York. This list ranks the 30 largest by number of employees on LinkedIn, led by HOK, WORKac and Skidmore, Owings & Merrill (SOM). Their median headcount is 186. Half of them were founded in 1979 or later.

The architecture and planning sector in New York features a mix of well-established global firms and younger companies. These firms primarily focus on designing buildings and spaces, offering comprehensive services that often include engineering, planning, and sustainability consulting. Many emphasize innovative solutions and contextual sensitivity in their projects. Notable firms include HOK, a global firm offering design, architecture, engineering, and planning services, and Skidmore, Owings & Merrill (SOM), recognized for environmentally-advanced solutions. KPF designs diverse, innovative buildings globally, while Perkins Eastman focuses on creating a positive impact through progressive design.

A common thread among these New York-based companies is their commitment to creating impactful and thoughtfully designed environments. Firms like WORKac focus on public, cultural, and civic projects with social and environmental concerns, and Rockwell Group merges performance and architecture to create extraordinary experiences. The data shows a strong presence of firms founded between the 1930s and 1980s, indicating a long-standing tradition of architectural excellence in the city, alongside newer entrants like particular, specializing in steel curtain walls.

🇺🇸 New York · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [HOK](https://www.tamtam.ai/c/hok) (hok.com)<br>A global firm offering design, architecture, engineering, and planning services to create sustainable and innovative solutions for clients and communities | Architecture and Planning | 🇺🇸 New York | 3,080 | 1955 |
| 2 | [WORKac](https://www.tamtam.ai/c/workac) (work.ac)<br>Award-winning architecture firm focused on public, cultural, and civic projects worldwide, emphasizing social and environmental concerns through intelligent and playful design | Architecture and Planning | 🇺🇸 New York | 2,654 | 2003 |
| 3 | [Skidmore, Owings & Merrill (SOM)](https://www.tamtam.ai/c/skidmore-owings-and-merrill-som) (som.com)<br>A leading design firm creating environmentally-advanced solutions for a better future, recognized for carbon neutrality and commitment to equality | Architecture and Planning | 🇺🇸 New York | 2,247 | 1936 |
| 4 | [CannonDesign](https://www.tamtam.ai/c/cannondesign) (cannondesign.com)<br>An integrated design firm leveraging creative thinkers to develop solutions for clients and society, focusing on human flourishing through Living-Centered Design | Architecture and Planning | 🇺🇸 New York | 1,761 | 1945 |
| 5 | [KPF](https://www.tamtam.ai/c/kpf) (kpf.com)<br>Architectural practice designing diverse, innovative buildings globally, focusing on quality, contextual sensitivity, and smart solutions without stylistic constraints | Architecture and Planning | 🇺🇸 New York | 1,463 | 1976 |
| 6 | [Perkins Eastman](https://www.tamtam.ai/c/perkins-eastman) (perkinseastman.com)<br>Global architecture and design firm focusing on creating a positive impact on people's lives through progressive and inventive design solutions worldwide | Architecture and Planning | 🇺🇸 New York | 1,107 | 1981 |
| 7 | [HLW](https://www.tamtam.ai/c/hlw) (hlw.com)<br>Leading international firm providing full-service planning, architecture, and design for innovative companies across various sectors, with a mission to question norms and build the future | Architecture and Planning | 🇺🇸 New York | 686 | 1885 |
| 8 | [Rockwell Group](https://www.tamtam.ai/c/rockwell-group) (rockwellgroup.com)<br>Innovative interdisciplinary architecture and design firm based in New York, creating extraordinary experiences and environments worldwide through merging performance and architecture | Architecture and Planning | 🇺🇸 New York | 459 | 1984 |
| 9 | [RAMSA \| Robert A.M. Stern Architects](https://www.tamtam.ai/c/ramsa-robert-a-m-stern-architects) (ramsa.com)<br>Global architecture specializing in residential, academic, and cultural buildings in New York City Dedicated to research-driven practices and preserving a sense of place | Architecture and Planning | 🇺🇸 New York | 356 | 1969 |
| 10 | [Columbia University Graduate School of Architecture, Planning & Preservation](https://www.tamtam.ai/c/columbia-university-graduate-school-of-architecture-planning-and-preservation) (arch.columbia.edu)<br>Leading research university fostering a community engaged in architecture, planning, preservation, urban design, and real estate development through innovative degree programs | Architecture and Planning | 🇺🇸 New York | 341 | 1881 |
| 11 | [TPG Architecture](https://www.tamtam.ai/c/tpg-architecture) (tpgarchitecture.com)<br>A New York City design firm creating interior spaces to meet clients' strategic objectives in workplace, retail, hospitality, healthcare, and commercial properties globally | Architecture and Planning | 🇺🇸 New York | 280 | 1979 |
| 12 | [Shen Milsom & Wilke (SM&W)](https://www.tamtam.ai/c/shen-milsom-and-wilke-sm-and-w) (smwllc.com)<br>A global consulting firm specializing in acoustics, audiovisual, IT, security, and medical equipment planning to create innovative user experiences for clients worldwide | Architecture and Planning | 🇺🇸 New York | 240 | 1986 |
| 13 | [SHoP Architects](https://www.tamtam.ai/c/shop-architects) (shoparc.com)<br>Innovative architecture firm focused on designing buildings and spaces that enhance public life through diverse expertise and real-world constraints | Architecture and Planning | 🇺🇸 New York | 233 | 1996 |
| 14 | [Beyer Blinder Belle](https://www.tamtam.ai/c/beyer-blinder-belle) (beyerblinderbelle.com)<br>Award-winning architecture and design firm with expertise in preservation, urban design, and new construction across various building sectors and typologies | Architecture and Planning | 🇺🇸 New York | 213 | 1968 |
| 15 | [HLB Lighting Design](https://www.tamtam.ai/c/hlb-lighting-design) (hlblighting.com)<br>A leading global architectural lighting design firm offering integrated services, sustainable solutions, custom product development, and cutting-edge technology for transformative client experiences | Architecture and Planning | 🇺🇸 New York | 186 | 1968 |
| 16 | [Handel Architects](https://www.tamtam.ai/c/handel-architects) (handelarchitects.com)<br>Global architecture practice specializing in urban design, density, sustainability, and creating vibrant urban environments through innovative residential building design | Architecture and Planning | 🇺🇸 New York | 178 | 1994 |
| 17 | [Mancini Duffy](https://www.tamtam.ai/c/mancini-duffy) (manciniduffy.com)<br>A NYC-based design firm with over 100 years of experience, focusing on architecture, planning, and interior design with a tech-forward approach | Architecture and Planning | 🇺🇸 New York | 173 | 1915 |
| 18 | [Theatre Projects](https://www.tamtam.ai/c/theatre-projects) (theatreprojects.com)<br>Design and planning of diverse venues worldwide, enhancing community interaction through strategic, operational, and technological expertise in performance spaces. | Architecture and Planning | 🇺🇸 New York | 164 | 1957 |
| 19 | [Field Operations](https://www.tamtam.ai/c/field-operations) (fieldoperations.net)<br>A leading urban design and landscape architecture firm specializing in creating vibrant public spaces rooted in ecology and context | Architecture and Planning | 🇺🇸 New York | 162 | 1999 |
| 20 | [ODA](https://www.tamtam.ai/c/oda) (oda-architecture.com)<br>Innovative architecture firm challenging urban living norms, prioritizing human needs and creating transformative designs in New York and beyond | Architecture and Planning | 🇺🇸 New York | 159 | 2007 |
| 21 | [Dattner Architects](https://www.tamtam.ai/c/dattner-architects) (dattner.com)<br>A mission-driven, women-owned architectural firm in NYC creating essential projects that enrich urban experiences, transform environments, and strengthen communities | Architecture and Planning | 🇺🇸 New York | 158 | 1964 |
| 22 | [RAND Engineering & Architecture, DPC](https://www.tamtam.ai/c/rand-engineering-and-architecture-dpc) (randpc.com)<br>An established NYC firm offering expert evaluation, design, and administration of property repair, restoration, new construction, and compliance services | Architecture and Planning | 🇺🇸 New York | 129 | 1987 |
| 23 | [PETER PENNOYER ARCHITECTS, DPC](https://www.tamtam.ai/c/peter-pennoyer-architects-dpc) (ppapc.com)<br>Award-winning traditional architecture firm based in Manhattan and Miami, known for classicism, historic preservation, and forward-looking interpretations of history in residential, commercial, and institutional projects | Architecture and Planning | 🇺🇸 New York | 65 |  |
| 24 | [Modernus](https://www.tamtam.ai/c/modernus) (modernus.com)<br>Specializing in innovative architectural products, doors, and surfaces, we empower designers with versatile and customizable solutions that push the boundaries of interior design | Architecture and Planning | 🇺🇸 New York | 42 | 2003 |
| 25 | [ESKW/Architects](https://www.tamtam.ai/c/eskw-architects) (eskwarchitects.com)<br>A well-established NYC architecture practice offering design excellence for institutional, residential, and commercial projects, focusing on client concerns and community needs | Architecture and Planning | 🇺🇸 New York | 33 | 1960 |
| 26 | [G3 Architecture Interiors Planning](https://www.tamtam.ai/c/g3-architecture-interiors-planning) (g3arch.com)<br>G3 offers high-quality architectural and interior design solutions for corporations, institutions, developers, and property owners, translating clients' vision into exceptional spaces | Architecture and Planning | 🇺🇸 New York | 30 | 1994 |
| 27 | [ikon.5 architects](https://www.tamtam.ai/c/ikon-5-architects) (ikon5architects.com)<br>Innovative design studio specializing in architecture and landscape design, crafting unique and storytelling buildings that celebrate community diversity | Architecture and Planning | 🇺🇸 New York | 28 | 2003 |
| 28 | [Fohlio, Inc.](https://www.tamtam.ai/c/fohlio-inc) (bit.ly)<br>A platform for Architects, Designers, Engineers, and Contractors to easily research, select, and incorporate building products into their projects efficiently | Architecture and Planning | 🇺🇸 New York | 26 | 2015 |
| 29 | [Stefan Al Architects](https://www.tamtam.ai/c/stefan-al-architects) (stefanal.com)<br>A design studio specializing in sustainable architecture and urban design, focusing on innovative solutions for environmentally conscious projects | Architecture and Planning | 🇺🇸 New York | 24 |  |
| 30 | [Goshow Architects](https://www.tamtam.ai/c/goshow-architects) (goshow.com)<br>A NYC woman-owned architecture firm dedicated to sustainable design solutions for healthy living and learning environments, offering growth opportunities for employees | Architecture and Planning | 🇺🇸 New York | 23 | 1978 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

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## The same list elsewhere in United States

- [Architecture and Planning companies in the United States](https://www.tamtam.ai/l/architecture-and-planning-companies-united-states) (436)
- [Architecture and Planning companies in New York State](https://www.tamtam.ai/l/architecture-and-planning-companies-new-york-state) (75)
- [Architecture and Planning companies in California](https://www.tamtam.ai/l/architecture-and-planning-companies-california) (58)
- [Architecture and Planning companies in Texas](https://www.tamtam.ai/l/architecture-and-planning-companies-texas) (28)

## The same list elsewhere

- [Architecture and Planning companies in the world](https://www.tamtam.ai/l/architecture-and-planning-companies-in-the-world) (1,380)

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Source: https://www.tamtam.ai/l/architecture-and-planning-companies-new-york