Company lists · Data refreshed September 2026

Top 25 Seismic design companies based in the United States

Name: Seismic design companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 1,106 companies tracked

RevenueBase identified 1,106 seismic design companies headquartered in the United States as of September 2026 and tracks 11,348 professional contacts across them, including 5,320 with verified work emails. San Francisco is the largest hub.

This list covers seismic 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 22, 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 22, 2026 86% judged on-target in blind review

1,106Companies

11,348Contacts tracked

5,320Verified emails

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The 25 largest seismic design companies based in the United States

Ranked by team size

Top 25 of 1,106 seismic design companies based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to seismic 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Computers And Structures, INC	Indirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 22, 2026	51-200	218 contacts →
	Indirect evidence “Founded in 1975, Computers and Structures, Inc.(CSI) is recognized globally as the pioneering leader in software tools for structural and earthquake engineering.” Source: RevenueBase Database · checked Sep 22, 2026
2	CTL Thompson	Indirect evidence	Denver, CO, United StatesHQ checked Sep 22, 2026	201-500	189 contacts →
	Indirect evidence “CTL\|Thompson (CTL\|T) has been providing innovative engineering solutions throughout Colorado since 1971.” Source: RevenueBase Database · checked Sep 22, 2026
3	Lera Consulting Structural Engineers	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	51-200	172 contacts →
	Indirect 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 22, 2026
4	ESG Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	51-200	169 contacts →
	Indirect evidence “ESG Solutions is a world leader in passive microseismic monitoring.” Source: RevenueBase Database · checked Sep 22, 2026
5	Schaefer	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 22, 2026	51-200	158 contacts →
	Indirect evidence “We are open-minded in our approach + thinking, thought leaders with diverse experience.” Source: RevenueBase Database · checked Sep 22, 2026
6	Mueser Rutledge Consulting Engineers	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	51-200	157 contacts →
	Partial evidence “Mueser Rutledge Consulting Engineers is a leading engineering firm providing structural design of foundations and waterfront structures and complete geotechnical studies.” Source: RevenueBase Database · checked Sep 22, 2026
7	Zapata Group, INC Zapata	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 22, 2026	51-200	156 contacts →
	Indirect evidence “ZAPATA is a full service architecture and engineering (A-E) and program/construction management firm.” Source: RevenueBase Database · checked Sep 22, 2026
8	Inova Geophysical	Strong evidence	Sugar Land, TX, United StatesHQ checked Sep 22, 2026	201-500	153 contacts →
	Strong evidence “INOVA designs and manufactures seismic data acquisition systems primarily for the oil and gas industry.” Source: RevenueBase Database · checked Sep 22, 2026
9	Wright Engineers	Indirect evidence	United StatesHQ checked Sep 22, 2026	51-200	125 contacts →
	Indirect evidence “We deliver structural engineering solutions you can trust alongside exceptional client service.” Source: RevenueBase Database · checked Sep 22, 2026
10	ZFA Structural Engineers	Indirect evidence	Santa Rosa, CA, United StatesHQ checked Sep 22, 2026	51-200	122 contacts →
	Indirect evidence “Since 1974, ZFA Structural Engineers (ZFA) has collaborated with public and private clients to help build better structures.” Source: RevenueBase Database · checked Sep 22, 2026
11	Biggs Cardosa Associates, INC	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 22, 2026	51-200	111 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
12	Vector Structural Engineering	Indirect evidence	Draper, UT, United StatesHQ checked Sep 22, 2026	51-200	103 contacts →
	Indirect evidence “Vector Structural Engineering is a full service structural engineering company licensed in all 50 states plus Washington, D.C, Puerto Rico and Provinces of Canada (Alberta…” Source: RevenueBase Database · checked Sep 22, 2026
13	Sk&a Structural Engineers	Indirect evidence	Potomac, MD, United StatesHQ checked Sep 22, 2026	51-200	98 contacts →
	Indirect evidence “Structural engineering consulting – from exciting visions to inspired reality.” Source: RevenueBase Database · checked Sep 22, 2026
14	Crux Subsurface, INC	Partial evidence	Spokane Valley, WA, United StatesHQ checked Sep 22, 2026	51-200	88 contacts →
	Partial evidence “An integrated geo-structural firm working collaboratively to obtain reliable subsurface data and create efficient, constructible foundation designs.” Source: RevenueBase Database · checked Sep 22, 2026
15	Sdii Global	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 22, 2026	51-200	88 contacts →
	Indirect evidence “Sdii Global Corporation (SDII) is an industry-leading forensic engineering and earth sciences firm, recognized by its clients as the foremost source of experts to have as their…” Source: RevenueBase Database · checked Sep 22, 2026
16	WDP	Indirect evidence	Manassas, VA, United StatesHQ checked Sep 22, 2026	51-200	86 contacts →
	Indirect evidence “Established in 1995, WDP was founded on the belief that clients’ specialty engineering and architectural needs are best served by people dedicated to solving complex problems.” Source: RevenueBase Database · checked Sep 22, 2026
17	ERA Structural Engineering	Indirect evidence	St. Paul, MN, United StatesHQ checked Sep 22, 2026	51-200	85 contacts →
	Indirect evidence “ERA Structural Engineering is a full-service structural engineering firm, where we Think Beyond the Beam.” Source: RevenueBase Database · checked Sep 22, 2026
18	Labib Funk Associates	Indirect evidence	El Segundo, CA, United StatesHQ checked Sep 22, 2026	51-200	77 contacts →
	Indirect evidence “Labib Funk + Associates (LFA) is a Consulting Engineering Firm that offers Structural, Shoring, Civil, and EBM Services.” Source: RevenueBase Database · checked Sep 22, 2026
19	BDI	Indirect evidence	Louisville, CO, United StatesHQ checked Sep 22, 2026	51-200	76 contacts →
	Indirect evidence “Since 1989, BDI has been the premier provider of bridge and building diagnostic stress and vibration testing, structural monitoring, and nondestructive evaluation services around…” Source: RevenueBase Database · checked Sep 22, 2026
20	Case Engineering, INC	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 22, 2026	51-200	75 contacts →
	Indirect evidence “The principals at Case Engineering, Inc.” Source: RevenueBase Database · checked Sep 22, 2026
21	Risa Tech, INC	Partial evidence	Foothill Ranch, CA, United StatesHQ checked Sep 22, 2026	11-50	75 contacts →
	Partial evidence “RISA delivers a suite of integrated software design solutions and technical support services that allow structural engineers to innovate with confidence, secure in the safety and…” Source: RevenueBase Database · checked Sep 22, 2026
22	ELD Engineering, INC	Indirect evidence	Forney, TX, United StatesHQ checked Sep 22, 2026	51-200	74 contacts →
	Indirect evidence “Eric L.” Source: RevenueBase Database · checked Sep 22, 2026
23	Ss&a Design Collective	Indirect evidence	Montgomery, AL, United StatesHQ checked Sep 22, 2026	51-200	73 contacts →
	Indirect evidence “SS & A is an employee owned Architecture-Engineering firm providing comprehensive services.” Source: RevenueBase Database · checked Sep 22, 2026
24	EM Structural	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 22, 2026	51-200	70 contacts →
	Partial evidence “EM Structural is a top structural engineering design company providing services to architects, building owners, developers, and contractors.” Source: RevenueBase Database · checked Sep 22, 2026
25	PK Associates Structural Engineers	Partial evidence	Scottsdale, AZ, United StatesHQ checked Sep 22, 2026	51-200	68 contacts →
	Partial evidence “Since 1992, we’ve specialized in providing comprehensive services from conceptual design through construction administration, always aiming to exceed client expectations with…” Source: RevenueBase Database · checked Sep 22, 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: seismic design companies. 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 seismic design companies.
Partial evidence: Its own public description names part of seismic design companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name seismic design companies. 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 1,106 seismic design companies based in the United States

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Seismic design companies based in the United States at a glance

As of Sep 22, 2026

46.9%Verified-email coverage

10.3Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · San Francisco

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

689

11-50

332

51-200

201-500

501-1,000

1,001-5,000

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 1,106 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 seismic 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 “seismic 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 seismic 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 seismic 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, 5,320 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 22, 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.

Seismic design companies by metro

Seismic design companies in San Francisco31
Seismic design companies in Los Angeles26

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 seismic 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 seismic design companies are there based in the United States?

RevenueBase identified 1,106 seismic 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?

Computers And Structures, INC, headquartered in Walnut Creek, tops this list with the largest team on record.

Which city has the most seismic design companies?

San Francisco leads with 31 headquartered companies, followed by Los Angeles (26) and Houston (23).

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 5,320 verified decision-maker contacts tracked across these 1,106 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 22, 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.