Company lists · Data refreshed November 2026

Top 25 Building design firms worldwide

Name: Building design firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 69,234 companies tracked

RevenueBase identified 69,234 company matches for building design firms worldwide as of November 2026 and tracks 513,434 professional contacts across them, including 151,766 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for building design firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for building design firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

69,234Companies

513,434Contacts tracked

151,766Verified emails

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The 25 largest building design firms worldwide

Ranked by team size

Top 25 of 69,234 company matches for building design firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	KEO International Consultants	Exact match	Safat, KuwaitHQ recorded Nov 6, 2026	1,001-5,000	2,198 contacts →
	Exact match “From shaping iconic skylines to crafting sustainable communities, KEO builds legacies for a better tomorrow.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	DLR Group	Exact match	30 Offices, TN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,118 contacts →
	Exact match “DLR Group is an integrated design firm delivering architecture, engineering, interiors, planning, and building optimization for new construction, renovation, and adaptive reuse.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Clayco	Exact match	Chicago, MO, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,903 contacts →
	Exact match “Clayco is a full-service, turnkey real estate development, master planning, architecture, engineering, and construction firm that safely delivers clients across North America the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	IBI Group	Exact match	Amsterdam, FL, NetherlandsHQ recorded Nov 6, 2026	1,001-5,000	1,582 contacts →
	Exact match “IBI Group is a technology-driven design firm with global architecture, engineering, planning and technology expertise.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	PAGE	Exact match	Washington, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,456 contacts →
	Exact match “Performance by Design.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Bohler	Exact match	Herndon, PA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,239 contacts →
	Exact match “Bohler is a land development consulting and technical design firm that helps developers, owners and other real estate professionals identify and act on opportunities and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	The Beck Group	Exact match	Dallas, FL, United StatesHQ recorded Nov 6, 2026	501-1,000	1,178 contacts →
	Exact match “We integrate architecture, construction, sustainability, and technology to transform how our clients design and build.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Morshedy Group	Exact match	Kattameya, EgyptHQ recorded Nov 6, 2026	5,001-10,000	1,161 contacts →
	Exact match “Since our foundation in 1983, Morshedy Group has been in the right place at the right time.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Henderson Engineers	Exact match	Lenexa, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	1,124 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Square Engineering Firm	Exact match	Giza, EgyptHQ recorded Nov 6, 2026	1,001-5,000	1,089 contacts →
	Exact match “Square (S.A.E) is an Egyptian joint-stock company founded in 1992.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Ware Malcomb	Exact match	International Design Firm, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,057 contacts →
	Exact match “Established in 1972, Ware Malcomb is a dynamic, forward-thinking design firm offering streamlined architecture, interior design, branding, and engineering services across the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Dewan Architects & Engineers	Exact match	Baghdad, United Arab EmiratesHQ recorded Nov 6, 2026	501-1,000	1,000 contacts →
	Exact match “Dewan Architects + Engineers is a global, multidisciplinary design consultancy firm founded in 1984 in Abu Dhabi, UAE.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	NORR	Exact match	Toronto, ON, CanadaHQ recorded Nov 6, 2026	501-1,000	994 contacts →
	Exact match “NORR is a global team of 800 architects, engineers, planners, and interior designers creating design strategies and solutions that express the unique vision of every project.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	ARE OY	Exact match	Vantaa, FinlandHQ recorded Nov 6, 2026	1,001-5,000	916 contacts →
	Exact match “Dedicated to engineering a better life for your building.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Arco Murray	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	912 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	B H Architects	Exact match	Toronto, ON, CanadaHQ recorded Nov 6, 2026	201-500	850 contacts →
	Exact match “B+H Architects is a global, award-winning firm with a 70+ year legacy of building creative solutions for clients through the delivery of architecture, interior design, landscape…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	GPD Group	Exact match	Akron, OH, United StatesHQ recorded Nov 6, 2026	501-1,000	815 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Saudi Diyar Consultants	Exact match	Jeddah, Saudi ArabiaHQ recorded Nov 6, 2026	501-1,000	814 contacts →
	Exact match “Architects and Engineers Saudi Diyar Consultants is one of the leading multidiscipline design firms in the Middle East with a diverse portfolio of commercial, institutional…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	M3 Engineering & Technology Corp	Exact match	Tucson, AZ, United StatesHQ recorded Nov 6, 2026	501-1,000	802 contacts →
	Exact match “M3 is a privately held full service design firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Ae7	Exact match	Dubai, FL, United Arab EmiratesHQ recorded Nov 6, 2026	501-1,000	798 contacts →
	Exact match “AE7 is a multi-disciplinary firm that believes in a holistic approach to design and the transformational power of architecture to create thoughtful and meaningful solutions in the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	American Structurepoint	Exact match	Indianapolis, OH, United StatesHQ recorded Nov 6, 2026	501-1,000	780 contacts →
	Exact match “Established in 1966, American Structurepoint has developed a national and international reputation for our work in a variety of disciplines and markets throughout the built…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	RSP	Exact match	SingaporeHQ recorded Nov 6, 2026	1,001-5,000	775 contacts →
	Exact match “Headquartered in Singapore, RSP Architects Planners & Engineers (Pte) Ltd (RSP) is a global multidisciplinary architectural and engineering design group, with over 65 years of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	HFA	Exact match	Bentonville, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	708 contacts →
	Exact match “Founded in 1990, HFA is a multi-disciplinary architecture and engineering firm specializing in delivering tailored design solutions for businesses of all sizes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Goodwyn Mills Cawood GMC	Exact match	Montgomery, GA, United StatesHQ recorded Nov 6, 2026	501-1,000	700 contacts →
	Exact match “ENR Southeast 2024 Design Firm of the Year Goodwyn Mills Cawood (GMC) is one of the largest architecture and engineering firms in the Southeast.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	H2m Architects Engineers	Exact match	Melville, CT, United StatesHQ recorded Nov 6, 2026	501-1,000	692 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “building design firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 69,234 building design firms worldwide

See the full list, filter by size, metro and specialty, and access 151,766 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Building design firms worldwide at a glance

As of Nov 6, 2026

29.6%Verified-email coverage

7.4Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

46,557

11-50

17,690

51-200

3,128

201-500

585

501-1,000

126

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for building design firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “building design firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 151,766 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Building design firms by location

301 lists · largest first

Every Building design firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “building design firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building design firms are there worldwide?

RevenueBase identified 69,234 company matches for building design firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

KEO International Consultants tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most building design firms?

The United States leads with 14,687 companies, followed by India (4,887) and the United Kingdom (3,746). Every building design firms list by country and city is linked on this page.

Which city has the most building design firms?

London leads with 931 company records, followed by Sao Paulo (816) and New York (783).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 151,766 professional contacts with verified work emails tracked across these 69,234 companies; direct dials are available where recorded.

How current is this list?

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