Company lists · Data refreshed September 2026

Top 25 Architectural and engineering accounting firms based in the United States

Name: Architectural and engineering accounting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 3,388 companies tracked

RevenueBase identified 3,388 architectural and engineering accounting firms headquartered in the United States as of September 2026 and tracks 40,036 professional contacts across them, including 18,615 with verified work emails. New York is the largest hub.

This list covers architectural and engineering accounting firms 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 27, 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 27, 2026 86% judged on-target in blind review

3,388Companies

40,036Contacts tracked

18,615Verified emails

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The 25 largest architectural and engineering accounting firms based in the United States

Ranked by team size

Top 25 of 3,388 architectural and engineering accounting firms based in the United States, 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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	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
12	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
13	Strand	Partial evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	201-500	234 contacts →
	Partial evidence “Celebrating Our 45th Year Founded in 1979, STRAND and its team bring over four decades of collective expertise across diverse project types, delivering architectural, planning…” Source: RevenueBase Database · checked Sep 27, 2026
14	TJT	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 27, 2026	201-500	231 contacts →
	Indirect evidence “Thomas, Judy and Tucker, P.A.” Source: RevenueBase Database · checked Sep 27, 2026
15	Allana Buick & Bers, INC	Strong evidence	Palo Alto, CA, United StatesHQ checked Sep 27, 2026	201-500	229 contacts →
	Strong evidence “Allana Buick & Bers, Inc.(ABB) is a leading Architectural Engineering firm specializing in making buildings perform better by making them energy efficient and longer lasting with…” Source: RevenueBase Database · checked Sep 27, 2026
16	Dekker	Partial evidence	Albuquerque, NM, United StatesHQ checked Sep 27, 2026	201-500	219 contacts →
	Partial evidence “Dekker is a multidisciplinary architecture firm with offices in Albuquerque, New Mexico; Phoenix, Arizona; and El Paso, Texas.” Source: RevenueBase Database · checked Sep 27, 2026
17	Wiley Wilson	Strong evidence	Lynchburg, VA, United StatesHQ checked Sep 27, 2026	51-200	213 contacts →
	Strong evidence “Wiley\|Wilson is a full-service architecture and engineering firm, specializing in creating innovative and functional design solutions for our government, institutional, and…” Source: RevenueBase Database · checked Sep 27, 2026
18	Trileaf Corporation	Indirect evidence	St Louis, MO, United StatesHQ checked Sep 27, 2026	201-500	211 contacts →
	Indirect evidence “Quality work and quick responses - Trileaf gives you both.” Source: RevenueBase Database · checked Sep 27, 2026
19	Stratus	Strong evidence	Coraopolis, United StatesHQ checked Sep 27, 2026	201-500	205 contacts →
	Strong evidence “Stratus Team®, LLC is a multidisciplinary firm specializing in engineering, architecture, interior design, and consulting.” Source: RevenueBase Database · checked Sep 27, 2026
20	IDS Group, INC	Strong evidence	Irvine, CA, United StatesHQ checked Sep 27, 2026	51-200	205 contacts →
	Strong evidence “IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Source: RevenueBase Database · checked Sep 27, 2026
21	Krazan & Associates, INC	Indirect evidence	Clovis, CA, United StatesHQ checked Sep 27, 2026	201-500	197 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
22	Eapc Architects Engineers	Strong evidence	Grand Forks, ND, United StatesHQ checked Sep 27, 2026	51-200	192 contacts →
	Strong evidence “EAPC is an award-winning full-service design and consulting firm offering architectural and engineering services from offices in Arizona, Minnesota, North Dakota, and South Dakota.” Source: RevenueBase Database · checked Sep 27, 2026
23	The Falcon Group	Indirect evidence	Warren, NJ, United StatesHQ checked Sep 27, 2026	51-200	182 contacts →
	Indirect evidence “At The Falcon Group, our team of experienced professionals comes together to provide a wide range of services to meet all of our clients’ specific needs.” Source: RevenueBase Database · checked Sep 27, 2026
24	Stambaugh Ness	Strong evidence	York, PA, United StatesHQ checked Sep 27, 2026	201-500	179 contacts →
	Strong evidence “Stambaugh Ness is a professional services firm serving clients nationally with a singular focus on architecture, engineering, and related industries.” Source: RevenueBase Database · checked Sep 27, 2026
25	Lera Consulting Structural Engineers	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	172 contacts →
	Partial evidence “LERA Consulting Structural Engineers (LERA) is a M/WBE structural engineering firm providing services to architects, owners, contractors, and developers.” 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 3,388 architectural and engineering accounting firms based in the United States

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Architectural and engineering accounting firms based in the United States at a glance

As of Sep 27, 2026

46.5%Verified-email coverage

11.8Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

2,241

11-50

920

51-200

177

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,388 companies.

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.
What qualifies: Companies headquartered in the United States 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. 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, 18,615 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 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 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 based in the United States?

RevenueBase identified 3,388 architectural and engineering accounting firms 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?

Ssoe Group, headquartered in Toledo, tops this list with the largest team on record.

Which city has the most architectural and engineering accounting firms?

New York leads with 120 headquartered companies, followed by Houston (67) and Chicago (55).

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 18,615 verified decision-maker contacts tracked across these 3,388 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.