Company lists · Data refreshed September 2026

Top 25 Architecture design companies based in the United States

RevenueBase identified 14,304 architecture design companies headquartered in the United States as of September 2026 and tracks 199,480 professional contacts across them, including 94,727 with verified work emails and 85,757 with mobile numbers. New York is the largest hub.

This list covers architecture design companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
14,304Companies
199,480Contacts tracked
94,727Verified emails
85,757Mobile numbers
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The 25 largest architecture design companies based in the United States

Ranked by team size
Top 25 of 14,304 architecture design companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to architecture design companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceChicago, IL, United StatesHQ checked Sep 6, 20261,001-5,0002,958 contacts →

“Since 1935, we’ve believed that design has the power to make the world a better, more beautiful place.”

Source: company website · checked Sep 6, 2026
2Partial evidenceNew York, NY, United StatesHQ checked Sep 6, 20261,001-5,0002,614 contacts →

“HOK is a global interdisciplinary design firm.”

Source: company website · checked Sep 6, 2026
3Strong evidence30 Offices, MN, United StatesHQ checked Sep 6, 20261,001-5,0001,992 contacts →

“DLR Group is an integrated design firm delivering architecture, engineering, interiors, planning, and building optimization for new construction, renovation, and adaptive reuse.”

Source: company website · checked Sep 6, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 6, 20261,001-5,0001,967 contacts →

“Skidmore, Owings & Merrill (SOM) is a global practice of architects, designers, engineers, and planners, responsible for some of the world’s most technically and environmentally…”

Source: company website · checked Sep 6, 2026
5Partial evidenceChicago, IL, United StatesHQ checked Sep 6, 20261,001-5,0001,720 contacts →

“Clayco is a full-service, turnkey real estate development, master planning, architecture, engineering, and construction firm that safely delivers clients across North America the…”

Source: company website · checked Sep 6, 2026
6Partial evidenceToledo, OH, United StatesHQ checked Sep 6, 20261,001-5,0001,603 contacts →

“As an internationally ranked architecture and engineering firm, SSOE is known for delivering unparalleled client value that advances the AEC industry.”

Source: company website · checked Sep 6, 2026
7Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 2026501-1,0001,584 contacts →

“Celebrating 40 years of visionary design and innovation, IA Interior Architects is the first global architecture firm focused exclusively on interiors.”

Source: company website · checked Sep 6, 2026
8Partial evidenceBrooklyn, United StatesHQ checked Sep 6, 2026501-1,0001,540 contacts →

“BIG is a Copenhagen, New York, London, Barcelona, Shanghai, Los Angeles, Zurich, and Bhutan-based global architecture firm operating within the fields of architecture, urbanism…”

Source: company website · checked Sep 6, 2026
9Partial evidenceNashville, TN, United StatesHQ checked Sep 6, 2026501-1,0001,430 contacts →

“Gresham Smith is a premier architecture, engineering and consultancy services firm dedicated to creating healthy and thriving communities.”

Source: company website · checked Sep 6, 2026
10Strong evidenceDallas, TX, United StatesHQ checked Sep 6, 20261,001-5,0001,414 contacts →

“Corgan is an employee-owned architecture and design firm with 22 locations and more than 1,300 team members globally.”

Source: company website · checked Sep 6, 2026
11Partial evidenceWashington, DC, United StatesHQ checked Sep 6, 20261,001-5,0001,191 contacts →

“Performance by Design.”

Source: company website · checked Sep 6, 2026
12Strong evidenceDallas, TX, United StatesHQ checked Sep 6, 2026501-1,0001,054 contacts →

“We integrate architecture, construction, sustainability, and technology to transform how our clients design and build.”

Source: company website · checked Sep 6, 2026
13Strong evidenceInternational Design Firm, United StatesHQ checked Sep 6, 2026501-1,000992 contacts →

“Established in 1972, Ware Malcomb is a dynamic, forward-thinking design firm offering streamlined architecture, interior design, branding, and engineering services across the…”

Source: company website · checked Sep 6, 2026
14Partial evidenceNew York, NY, United StatesHQ checked Sep 6, 2026501-1,000970 contacts →

“KPF is dedicated to transforming cities through impactful design, collaborating closely with the world’s most forward-thinking clients to create high performing, carefully crafted…”

Source: company website · checked Sep 6, 2026
15Strong evidenceHouston, TX, United StatesHQ checked Sep 6, 20261,001-5,000892 contacts →

“PBK is an award-winning architecture, engineering and consulting practice that has been a leader in design solutions for education, healthcare, corporate, government and…”

Source: company website · checked Sep 6, 2026
16Indirect evidenceSyosset, NY, United StatesHQ checked Sep 6, 20261,001-5,000874 contacts →

“The LiRo Group and Hill International’s Northeast Region have merged to become LiRo-Hill, upholding the firms’ strong, long-standing reputations as leaders in the field, and…”

Source: company website · checked Sep 6, 2026
17Indirect evidenceAkron, OH, United StatesHQ checked Sep 6, 2026501-1,000786 contacts →

“Founded in 1961, GPD Group (GPD) has grown from only a handful of people to over 870 professionals in 14 offices located in Akron, Atlanta, Cleveland, Columbus, Dallas…”

Source: company website · checked Sep 6, 2026
18Partial evidenceTucson, AZ, United StatesHQ checked Sep 6, 2026501-1,000707 contacts →

“M3 is a privately held full service design firm.”

Source: company website · checked Sep 6, 2026
19Indirect evidenceLivonia, MI, United StatesHQ checked Sep 6, 2026501-1,000701 contacts →

“There are many AEP firms.”

Source: company website · checked Sep 6, 2026
20Partial evidenceMelville, NY, United StatesHQ checked Sep 6, 2026501-1,000692 contacts →

“About H2M H2M architects + engineers is a multi-disciplinary professional consulting and design firm, proud of its long history of client service and consistent ability to meet…”

Source: company website · checked Sep 6, 2026
21Indirect evidenceDallas, TX, United StatesHQ checked Sep 6, 2026501-1,000662 contacts →

“About Us: Welcome to Huitt-Zollars, a 100% employee-owned professional services firm dedicated to transforming the built environment.”

Source: company website · checked Sep 6, 2026
22Indirect evidenceOmaha, NE, United StatesHQ checked Sep 6, 2026501-1,000656 contacts →

“Industry-Leading.”

Source: company website · checked Sep 6, 2026
23Partial evidenceNormal, IL, United StatesHQ checked Sep 6, 2026501-1,000654 contacts →

“Farnsworth Group is a leading employee-owned full-service design firm, with 650-plus professionals across the United States.”

Source: company website · checked Sep 6, 2026
24Strong evidenceMontgomery, AL, United StatesHQ checked Sep 6, 2026501-1,000653 contacts →

“ENR Southeast 2024 Design Firm of the Year Goodwyn Mills Cawood (GMC) is one of the largest architecture and engineering firms in the Southeast.”

Source: company website · checked Sep 6, 2026
25Strong evidenceCedar Rapids, IA, United StatesHQ checked Sep 6, 2026501-1,000648 contacts →

“As an architecture and engineering consulting firm, Shive-Hattery goes beyond traditional design.”

Source: company website · checked Sep 6, 2026

Showing 25 of 14,304 architecture design companies based in the United States

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Architecture design companies based in the United States at a glance

As of Sep 6, 2026
47.5%Verified-email coverage
43.0%Mobile-number coverage
13.9Average contacts per company
1-10Median size (employees)
7.1%Largest-city concentration · New York
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
9,474
11-50
3,910
51-200
735
201-500
87
501-1,000
35
1,001-5,000
22
5,001-10,000
2
10001+
2

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among architecture design companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “architecture design companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names architecture design companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among architecture design companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 94,727 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 6, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Architecture design companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names architecture design companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many architecture design companies are there based in the United States?

RevenueBase identified 14,304 architecture design companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Perkins&will, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most architecture design companies?

New York leads with 1013 headquartered companies, followed by Los Angeles (420) and Chicago (311).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 94,727 verified decision-maker contacts tracked across these 14,304 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.