Company lists · Data refreshed September 2026

Top 25 Structural engineering companies based in Houston, United States

RevenueBase identified 227 structural engineering companies headquartered in Houston, United States as of September 2026 and tracks 14,866 professional contacts across them, including 7,065 with verified work emails. New York is the largest hub.

This list covers structural engineering companies headquartered in Houston, 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 6, 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 6, 2026 86% judged on-target in blind review
227Companies
14,866Contacts tracked
7,065Verified emails
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The 25 largest structural engineering companies based in Houston, United States

Ranked by team size
Top 25 of 227 structural engineering companies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to structural engineering 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 20261,001-5,0001,932 contacts →

“Employee-Owned.”

Source: company website · checked Sep 6, 2026
2Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 20261,001-5,0001,298 contacts →

“Welcome to Walter P Moore!”

Source: company website · checked Sep 6, 2026
3Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 20261,001-5,0001,184 contacts →

“Consultants.”

Source: company website · checked Sep 6, 2026
4Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 20261,001-5,0001,112 contacts →

“Ranked No.”

Source: company website · checked Sep 6, 2026
5Strong evidenceHouston, TX, United StatesHQ checked Sep 6, 2026n/a789 contacts →

“Energo Engineering is a KBR Company that provides the full package of structural integrity management (SIM) and advanced structural engineering services for offshore floating and…”

Source: company website · checked Sep 6, 2026
6Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 2026501-1,000683 contacts →

“Quiddity is an award-winning, full-service civil engineering, planning, surveying, and consulting firm providing innovative solutions for public infrastructure and private…”

Source: company website · checked Sep 6, 2026
7Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 2026501-1,000524 contacts →

“Cobb, Fendley & Associates, Inc.(CobbFendley) is a nationally recognized infrastructure solutions firm with a regional focus and a commitment to excellence.”

Source: company website · checked Sep 6, 2026
8Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 2026201-500461 contacts →

“Lockwood, Andrews & Newnam, Inc.(LAN) is a full-service consulting firm offering planning, engineering and program management services.”

Source: company website · checked Sep 6, 2026
9Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 2026201-500312 contacts →

“Founded in 1946, PGAL is a design firm specializing in architecture, engineering, interiors, and planning for a diverse portfolio of public and private sector clients.”

Source: company website · checked Sep 6, 2026
10Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 2026201-500260 contacts →

“Founded in 1993, Tolunay-Wong Engineers, Inc.(TWE) is ranked as one of the Top 10 largest civil engineering firms in Houston.”

Source: company website · checked Sep 6, 2026
11Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 2026501-1,000248 contacts →

“Office of the County Engineer is a regional leader in providing wholly integrated professional services to a broad range of clients.”

Source: company website · checked Sep 6, 2026
12Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 2026201-500247 contacts →

“EHRA Engineering is a civil engineering, surveying, low impact developing, land planning, construction phase services, traffic, emergency management and landscape architecture…”

Source: company website · checked Sep 6, 2026
13Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 202651-200199 contacts →

“Completing public infrastructure projects comes with tremendous pressure to serve the public while completing each project on-time and on-budget.”

Source: company website · checked Sep 6, 2026
14Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 202651-200182 contacts →

“Founded in 1970, IDS Engineering Group is a Houston-based civil engineering and surveying firm with over five decades of experience delivering infrastructure solutions for public…”

Source: company website · checked Sep 6, 2026
15Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 20261,001-5,000128 contacts →

“Gannett Fleming is a privately held AEC firm partnering closely with our clients on some of the toughest challenges facing our communities today-and into the future.”

Source: company website · checked Sep 6, 2026
16Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 202651-200125 contacts →

“OTHON is a multi-discipline civil engineering firm.”

Source: company website · checked Sep 6, 2026
17Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 2026501-1,000123 contacts →

“DCCM provides design, consulting, and construction management services focused on infrastructure markets across the United States.”

Source: company website · checked Sep 6, 2026
18Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 202651-20097 contacts →

“S&B Infrastructure, Ltd.(S & BI) has been in existence since 1994 as part of S&B Holdings, Ltd,(one of the largest privately-owned engineering firms in the State of Texas).”

Source: company website · checked Sep 6, 2026
19Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 202651-20081 contacts →

“Owner, Larry Hoffman, started Tri-Tech in 1994, and it was his ultimate vision to have a company that could provide a true turn-key service to accommodate a wide range of…”

Source: company website · checked Sep 6, 2026
20Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 202651-20079 contacts →

“Founded in 1984, OMEGA is an engineering and construction management firm specializing in infrastructure, civil engineering, highway engineering, transportation planning, railway…”

Source: company website · checked Sep 6, 2026
21Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 202651-20065 contacts →

“Civitas Engineering Group Inc.”

Source: company website · checked Sep 6, 2026
22Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 202651-20064 contacts →

“Infrastructure Consulting & Engineering, LLC (formerly IDCUS Inc.), is a leading Texas-based professional services, civil engineering, and consulting firm specializing in public…”

Source: company website · checked Sep 6, 2026
23Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 202611-5059 contacts →

“Odyssey Engineering Group is a Houston based civil engineering consulting firm.”

Source: company website · checked Sep 6, 2026
24Indirect evidenceHouston, TX, United StatesHQ checked Sep 6, 202611-5057 contacts →

“Founded in 1993, Dally + Associates, Inc.”

Source: company website · checked Sep 6, 2026
25Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 202611-5055 contacts →

“MBE | SBE | DBE | HUB | HHF, TBPE Firm No 16156 DECON LLC,founded by Fulvio Jaramillo, a consulting engineering firm committed to technical excellence, DECON’s services help…”

Source: company website · checked Sep 6, 2026

Showing 25 of 227 structural engineering companies based in Houston, United States

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Structural engineering companies based in Houston, United States at a glance

As of Sep 6, 2026
47.5%Verified-email coverage
65.5Average contacts per company
11-50Median size (employees)
118.9%Largest-city concentration · New York
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
82
11-50
100
51-200
30
201-500
4
501-1,000
6
1,001-5,000
5

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 227 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 structural engineering 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 Houston, United States whose own description of what they do matches “structural engineering 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 structural engineering 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 structural engineering companies, and records with no verified work email. Companies headquartered outside Houston 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, 7,065 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 6, 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.

Structural engineering companies by metro in the United States

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 structural engineering 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 structural engineering companies are there based in Houston, United States?

RevenueBase identified 227 structural engineering companies headquartered in Houston, 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?

LJA, headquartered in Houston, tops this list with the largest team on record.

Which city has the most structural engineering companies?

New York leads with 270 headquartered companies, followed by Houston (227) and Chicago (122).

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 7,065 verified decision-maker contacts tracked across these 227 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 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 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.