Company lists · Data refreshed September 2026

Top 25 Civil engineering consultancies based in Houston, United States

RevenueBase identified 321 company matches for civil engineering consultancies associated with Houston, United States as of September 2026 and tracks 15,631 professional contacts across them, including 7,411 with verified work emails and 6,356 with mobile numbers. Across the United States, Houston is the largest hub for this category.

This list covers company matches for civil engineering consultancies associated with Houston, United States, 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 September 8, 2026.

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 Sep 8, 2026 How this list was built
321Companies
15,631Contacts tracked
7,411Verified emails
6,356Mobile numbers
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The 25 largest civil engineering consultancies based in Houston, United States

Ranked by team size
Top 25 of 321 company matches for civil engineering consultancies based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 8, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHouston, TX, United StatesHQ recorded Sep 8, 20261,001-5,0001,932 contacts →

Exact match

“Employee-Owned.”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Sep 8, 20261,001-5,0001,298 contacts →

Exact match

“Welcome to Walter P Moore!”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Sep 8, 20261,001-5,0001,184 contacts →

Exact match

“Consultants.”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Sep 8, 20261,001-5,0001,112 contacts →

Exact match

“Ranked No.”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Sep 8, 2026501-1,000683 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Sep 8, 2026501-1,000524 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Sep 8, 2026201-500461 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Sep 8, 2026201-500312 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Sep 8, 2026201-500260 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Sep 8, 2026501-1,000248 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Sep 8, 2026201-500247 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-200199 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-200182 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-200181 contacts →

Exact match

“Zentech, Inc, an engineering consulting and software development company, headquartered in Houston, TX, is comprised of experienced professionals specializing in providing…”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-200147 contacts →

Exact match

“Elevation Land Solutions helps developers and builders create successful places.”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-200134 contacts →

Exact match

“Shah Smith & Associates, Inc.(SSA) is a 120+ employee Mechanical, Electrical, and Plumbing (MEP) consulting engineering firm with offices in Houston, Austin & Dallas.”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Sep 8, 20261,001-5,000128 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-200125 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Sep 8, 2026501-1,000123 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-20097 contacts →

Exact match

“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).”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-20081 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-20079 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202651-20079 contacts →

Exact match

“The objective of A&S is to provide municipal engineering services, with focus on water districts, municipalities, and land development.”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
24Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202611-5066 contacts →

Exact match

“Isani Consultants, L.P.(ISANI) is a multi-discipline consulting engineering firm established in with our offices located in Houston, Texas.”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Sep 8, 202611-5066 contacts →

Exact match

“Sowells Consulting Engineers (SCE), established in 2010, is a professional services consulting firm specializing in leading project teams and providing quality control during the…”

Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase

Showing 25 of 321 civil engineering consultancies based in Houston, United States

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Civil engineering consultancies based in Houston, United States at a glance

As of Sep 8, 2026
47.4%Verified-email coverage
40.7%Mobile-number coverage
48.7Average contacts per company
11-50Median size (employees)
Sep 8, 2026Page data refreshed

Companies by employee count

1-10
125
11-50
130
51-200
48
201-500
5
501-1,000
6
1,001-5,000
5
10001+
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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.
What qualifies
Company records associated with Houston, United States whose business descriptions match “civil engineering consultancies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 7,411 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 September 8, 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.

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 “civil engineering consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many civil engineering consultancies are there based in Houston, United States?

RevenueBase identified 321 company matches for civil engineering consultancies associated with Houston, United States as of September 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?

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

Which city in the United States has the most civil engineering consultancies?

Houston leads the United States with 328 company records, followed by New York (299) and Austin (159).

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 7,411 professional contacts with verified work emails tracked across these 321 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 September 8, 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.