Company lists · Data refreshed September 2026
Top 25 Data center design firms worldwide
RevenueBase identified 3,474 data center design firms worldwide as of September 2026 and tracks 111,254 professional contacts across them, including 40,963 with verified work emails. The United States is the largest market and London the largest hub.
This list covers data center design firms worldwide, 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 19, 2026. Country and city lists for data center design firms follow the table.
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.
The 25 largest data center design firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,672 contacts → | ||||
Indirect evidence “At PM Group, our vision is to enable a world where science and technology transform lives.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,347 contacts → | ||||
Indirect evidence “Julius Berger Nigeria Plc is a leading construction company offering integrated construction solutions and related services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,213 contacts → | ||||
Indirect evidence “Haskell delivers over $3 billion annually in Architecture, Engineering, Construction (AEC) and Consulting solutions to assure certainty of outcome for complex capital projects…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,049 contacts → | ||||
Partial evidence “Colliers Engineering & Design, an affiliate of Colliers, is a trusted provider of multi-discipline engineering and architecture, design and consulting services to public and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,009 contacts → | ||||
Indirect evidence “Digital infrastructure leader driven by purpose, innovation and community impact.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,942 contacts → | ||||
Indirect evidence “Since its inception in 2007, CtrlS has been a frontrunner in the datacenter industry with the largest Rated-4 datacenter footprint.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,865 contacts → | ||||
Strong evidence “ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,791 contacts → | ||||
Partial evidence “Group AMANA is the regional leader in the design-build of industrial and commercial facilities, with over 1,500 buildings constructed across the region in three decades of…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,726 contacts → | ||||
Indirect evidence “Since 1954, Cupertino Electric, Inc.(CEI) has been powered by people who’ve built a reputation for delivering high-profile, complex projects.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,682 contacts → | ||||
Partial evidence “IBI Group is a technology-driven design firm with global architecture, engineering, planning and technology expertise.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,555 contacts → | ||||
Partial evidence “BW Design Group is the only independent, fully integrated AEC firm powered by a Manufacturer's Mindset™.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,062 contacts → | ||||
Indirect evidence “Para nós do Grupo a|w, projetos impactantes são aqueles que traduzem o jeito de ser das pessoas e os valores das empresas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,054 contacts → | ||||
Partial evidence “We integrate architecture, construction, sustainability, and technology to transform how our clients design and build.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,049 contacts → | ||||
Strong evidence “Switch was founded in by CEO Rob Roy and stands at the forefront as the premier data center designer, builder and operator, owning 100% of its land and facilities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,040 contacts → | ||||
Partial evidence “Henderson Engineers is a national building systems design firm with a wide array of engineering services and a portfolio representing a full range of markets including business…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,030 contacts → | ||||
Indirect evidence “Walbridge is one of America’s largest privately held construction companies founded in Detroit in 1916.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,017 contacts → | ||||
Strong evidence “Scala Data Centers is the leading sustainable data center platform in the Hyperscale market.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 924 contacts → | ||||
Strong evidence “About Silent-Aire Founded in 1994, Silent-Aire is technology driven company that designs, engineers, manufactures and services hyperscale data center solutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 923 contacts → | ||||
Strong evidence “We provide high-end technical and professional services for the entire lifecycle of data centers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 911 contacts → | ||||
Strong evidence “Designer Group is a leading Irish-owned engineering contractor delivering projects across Energy & Industrial, Data Centres and Building Services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 849 contacts → | ||||
Indirect evidence “IO is now Iron Mountain.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 832 contacts → | ||||
Partial evidence “ARCO/Murray is a single source national design and construction firm that specializes in commercial construction and real estate needs for Fortune 500 companies and individual…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 822 contacts → | ||||
Indirect evidence “Introba is one of the world’s largest building engineering and consulting firms with more than employees in offices across the United States, Canada, the United Kingdom, Serbia…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 803 contacts → | ||||
Indirect evidence “Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 785 contacts → | ||||
Strong evidence “RED Engineering Design, a company of Tractebel, is a global engineering consultancy specialising in the design of complex, mission-critical Data Centre and digital infrastructure…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: data center design firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names data center design firms.
- Partial evidence
- Its own public description names part of data center design firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name data center design firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 3,474 data center design firms worldwide
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Data center design firms worldwide at a glance
As of Sep 19, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 data center design firms, 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.
- Coverage
- Every country. Country and city lists for data center design firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “data center design firms”. 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 data center design firms), 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 data center design firms, and records with no verified work email.
- 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, 40,963 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 19, 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.
Data center design firms by location
17 lists · largest firstEvery Data center design firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Data center design firms based in the United States1,038
- Data center design firms based in the United Kingdom175
- Data center design firms based in Brazil141
- Data center design firms based in India122
- Data center design firms based in Germany114
- Data center design firms based in France96
- Data center design firms based in Canada86
- Data center design firms based in Italy71
- Data center design firms based in Türkiye70
- Data center design firms based in Mexico63
- Data center design firms based in the Netherlands60
- Data center design firms based in Australia55
- Data center design firms based in Spain53
- Data center design firms based in the United Arab Emirates50
- Data center design firms based in Chile28
- Data center design firms based in Malaysia26
- Data center design firms based in Singapore25
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 data center design firms, 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 data center design firms are there worldwide?
RevenueBase identified 3,474 data center design firms worldwide 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?
PM Group, headquartered in Worldwide, tops this list with the largest team on record.
Which country has the most data center design firms?
The United States leads with 1,038 companies, followed by the United Kingdom (175) and Brazil (141). Every data center design firms list by country and city is linked on this page.
Which city has the most data center design firms?
London leads with 64 headquartered companies, followed by Sao Paulo (52) and New York (31).
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 40,963 verified decision-maker contacts tracked across these 3,474 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 19, 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.