Company lists · Data refreshed September 2026

Top 25 Architectural and engineering accounting firms worldwide

Name: Architectural and engineering accounting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 15,074 companies tracked

RevenueBase identified 15,074 architectural and engineering accounting firms worldwide as of September 2026 and tracks 112,161 professional contacts across them, including 32,361 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers architectural and engineering accounting 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 27, 2026. Country and city lists for architectural and engineering accounting 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

15,074Companies

112,161Contacts tracked

32,361Verified emails

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The 25 largest architectural and engineering accounting firms worldwide

Ranked by team size

Top 25 of 15,074 architectural and engineering accounting firms worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to architectural and engineering accounting firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Multiconsult	Partial evidence	Oslo, NorwayHQ checked Sep 27, 2026	1,001-5,000	2,553 contacts →
	Partial evidence “Multiconsult Norway is one of the leading firms of architectures, consulting engineers and designers in Norway.” Source: RevenueBase Database · checked Sep 27, 2026
2	Ssoe Group	Strong evidence	Toledo, OH, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,603 contacts →
	Strong evidence “As an internationally ranked architecture and engineering firm, SSOE is known for delivering unparalleled client value that advances the AEC industry.” Source: RevenueBase Database · checked Sep 27, 2026
3	Walter P Moore	Indirect evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,298 contacts →
	Indirect evidence “Welcome to Walter P Moore!” Source: RevenueBase Database · checked Sep 27, 2026
4	The Liro Group	Indirect evidence	Syosset, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	874 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026
5	GPD Group	Indirect evidence	Akron, OH, United StatesHQ checked Sep 27, 2026	501-1,000	786 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 27, 2026
6	Saudi Diyar Consultants	Indirect evidence	Jeddah, Saudi ArabiaHQ checked Sep 27, 2026	501-1,000	763 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 27, 2026
7	Goodwyn Mills Cawood GMC	Strong evidence	Montgomery, AL, United StatesHQ checked Sep 27, 2026	501-1,000	653 contacts →
	Strong evidence “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: RevenueBase Database · checked Sep 27, 2026
8	Arif & Bintoak	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 27, 2026	501-1,000	644 contacts →
	Indirect evidence “Arif & Bintoak Consulting Architects and Engineers was established in 1975 by civil engineers Mr.” Source: RevenueBase Database · checked Sep 27, 2026
9	Arab Engineering Bureau - Qatar	Partial evidence	Doha, QatarHQ checked Sep 27, 2026	501-1,000	582 contacts →
	Partial evidence “Arab Engineering Bureau (AEB) is an award-winning firm of architects, urban and master planners, interior, landscape and structural designers, engineers, quantity surveyors and…” Source: RevenueBase Database · checked Sep 27, 2026
10	AM Technical Solutions, INC	Partial evidence	Austin, TX, United StatesHQ checked Sep 27, 2026	1,001-5,000	527 contacts →
	Partial evidence “AM Technical Solutions (AM), founded in 1994, is a proven and licensed architect, engineering, construction and commissioning firm.” Source: RevenueBase Database · checked Sep 27, 2026
11	Little Diversified Architectural Consulting	Partial evidence	Little Global, VA, United StatesHQ checked Sep 27, 2026	201-500	509 contacts →
	Partial evidence “At Little, we deliver results far beyond architecture-results you wouldn’t expect from an architectural firm.” Source: RevenueBase Database · checked Sep 27, 2026
12	Share Microfin LTD	Partial evidence	Hyderabad, IndiaHQ checked Sep 27, 2026	1,001-5,000	477 contacts →
	Partial evidence “Share Microfin Ltd is an Accounting company located in 1-224/58, Rajeev Nagar, Nacharam, Hyderabad, Andhra Pradesh, India.” Source: RevenueBase Database · checked Sep 27, 2026
13	TTW	Partial evidence	North Sydney, AustraliaHQ checked Sep 27, 2026	501-1,000	472 contacts →
	Partial evidence “Great engineering starts with great people.” Source: RevenueBase Database · checked Sep 27, 2026
14	Cosmos-Eng	Partial evidence	Cairo, EgyptHQ checked Sep 27, 2026	201-500	466 contacts →
	Partial evidence “Introduction: COSMOS-E Engineers & Consultants is the leading company in multi-disciplinary Engineering and Consultancy Services in Egypt and the Middle-East.” Source: RevenueBase Database · checked Sep 27, 2026
15	APG -Architecture & Planning Group	Indirect evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 27, 2026	201-500	463 contacts →
	Indirect evidence “Founded in UAE with active presence in the GCC since 1973, APG is a leading multi-disciplinary A/E firm that is fully committed to the construction industry, providing a…” Source: RevenueBase Database · checked Sep 27, 2026
16	Pt. Takenaka Indonesia	Indirect evidence	Jakarta, IndonesiaHQ checked Sep 27, 2026	51-200	448 contacts →
	Indirect evidence “Planners, Architects, Engineers & Contractors” Source: RevenueBase Database · checked Sep 27, 2026
17	Entuitive	Partial evidence	Calgary, AB, CanadaHQ checked Sep 27, 2026	201-500	378 contacts →
	Partial evidence “ENTUITIVE BRINGS ENGINEERING AND INTUITION TOGETHER.” Source: RevenueBase Database · checked Sep 27, 2026
18	MBH Architects	Partial evidence	Alameda, CA, United StatesHQ checked Sep 27, 2026	201-500	319 contacts →
	Partial evidence “MBH Architects is a full-service architectural firm headquartered in a LEED Gold office in the San Francisco Bay Area with offices in New York City, Denver, Mumbai, and Bengaluru.” Source: RevenueBase Database · checked Sep 27, 2026
19	BSB Design	Indirect evidence	West Des Moines, IA, United StatesHQ checked Sep 27, 2026	51-200	281 contacts →
	Indirect evidence “For 60 years, BSB Design has partnered with clients to shape places that perform.” Source: RevenueBase Database · checked Sep 27, 2026
20	The S L A M Collaborative Slam	Partial evidence	Glastonbury, CT, United StatesHQ checked Sep 27, 2026	201-500	276 contacts →
	Partial evidence “SLAM is a 290 member architecture firm with offices in Atlanta, GA, Boston, MA, Denver, CO, Glastonbury, CT, Iowa City, IA, Los Angeles, CA, Orlando, FL, New York, NY…” Source: RevenueBase Database · checked Sep 27, 2026
21	DSC	Strong evidence	Giza, EgyptHQ checked Sep 27, 2026	201-500	266 contacts →
	Strong evidence “Distance Studio Consultants (DSC) is a multi-disciplinary architecture, engineering, and consulting firm.” Source: RevenueBase Database · checked Sep 27, 2026
22	Engineer Adnan Saffarini Office EAS	Partial evidence	Deirah, United Arab EmiratesHQ checked Sep 27, 2026	501-1,000	263 contacts →
	Partial evidence “Engineer Adnan Saffarini Office (EAS) currently is one of the most famous and largest offices of its kind in the region as a reputed Architects & Engineering Consultants Company…” Source: RevenueBase Database · checked Sep 27, 2026
23	Precise Financial Management Services LTD	Strong evidence	Tel Aviv, IsraelHQ checked Sep 27, 2026	201-500	259 contacts →
	Strong evidence “Precise is the leading financial management service provider for architectural, engineering and law firms.” Source: RevenueBase Database · checked Sep 27, 2026
24	Cuhaci Peterson	Indirect evidence	Maitland, FL, United StatesHQ checked Sep 27, 2026	201-500	248 contacts →
	Indirect evidence “Cuhaci Peterson is a Central Florida-based commercial design firm offering end-to-end solutions.” Source: RevenueBase Database · checked Sep 27, 2026
25	Lionakis	Strong evidence	Sacramento, CA, United StatesHQ checked Sep 27, 2026	201-500	244 contacts →
	Strong evidence “Lionakis was established in 1909 and is a multi-disciplinary firm specializing in architectural, structural engineering, and interior design services.” Source: RevenueBase Database · checked Sep 27, 2026

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: architectural and engineering accounting 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 architectural and engineering accounting firms.
Partial evidence: Its own public description names part of architectural and engineering accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name architectural and engineering accounting 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 15,074 architectural and engineering accounting firms worldwide

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Architectural and engineering accounting firms worldwide at a glance

As of Sep 27, 2026

28.9%Verified-email coverage

7.4Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · Sao Paulo

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

10,223

11-50

3,865

51-200

652

201-500

132

501-1,000

1,001-5,000

5,001-10,000

10001+

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 architectural and engineering accounting 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 architectural and engineering accounting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “architectural and engineering accounting 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 architectural and engineering accounting 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 architectural and engineering accounting 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, 32,361 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 27, 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.

Architectural and engineering accounting firms by location

47 lists · largest first

Every Architectural and engineering accounting 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 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 architectural and engineering accounting 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 architectural and engineering accounting firms are there worldwide?

RevenueBase identified 15,074 architectural and engineering accounting 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?

Multiconsult, headquartered in Oslo, tops this list with the largest team on record.

Which country has the most architectural and engineering accounting firms?

The United States leads with 3,388 companies, followed by Brazil (1,277) and India (645). Every architectural and engineering accounting firms list by country and city is linked on this page.

Which city has the most architectural and engineering accounting firms?

Sao Paulo leads with 196 headquartered companies, followed by New York (120) and London (112).

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 32,361 verified decision-maker contacts tracked across these 15,074 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 27, 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.