Company lists · Data refreshed September 2026

Top 25 Engineering consultancy firms based in Houston, United States

Name: Engineering consultancy firms based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 537 companies tracked

RevenueBase identified 537 company matches for engineering consultancy firms associated with Houston, United States as of September 2026 and tracks 29,186 professional contacts across them, including 10,620 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for engineering consultancy firms 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 27, 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 27, 2026 How this list was built

537Companies

29,186Contacts tracked

10,620Verified emails

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The 25 largest engineering consultancy firms based in Houston, United States

Ranked by team size

Top 25 of 537 company matches for engineering consultancy firms based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	S&b	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	5,001-10,000	3,510 contacts →
	Exact match “S&B is an engineer and constructor that designs and builds some of the largest and most complex industrial facilities in the world.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2	LJA	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,932 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3	Audubon Companies	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,488 contacts →
	Exact match “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4	Walter P Moore	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,298 contacts →
	Exact match “Welcome to Walter P Moore!” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5	Rimkus	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,184 contacts →
	Exact match “Consultants.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6	Bge, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,112 contacts →
	Exact match “Ranked No.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7	Gulf Companies	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	1,001-5,000	1,046 contacts →
	Exact match “At Gulf Companies, we are driven by our mission to serve a vital role in the global energy industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8	KBR Energo Engineering	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	n/a	789 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9	Quiddity	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	501-1,000	683 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 27, 2026 · View company records in RevenueBase
10	Cobb, Fendley & Associates, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	501-1,000	524 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 27, 2026 · View company records in RevenueBase
11	Lockwood, Andrews & Newnam, Inc. LAN	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	461 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 27, 2026 · View company records in RevenueBase
12	Stress Engineering Services, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	345 contacts →
	Exact match “Stress Engineering Services: 50 years of turning critical uncertainty into engineering certainty.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13	PGAL	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	312 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 27, 2026 · View company records in RevenueBase
14	ARION	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	310 contacts →
	Exact match “We are A-Team of engineers specializing in the energy industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15	Tolunay-Wong Engineers, INC	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	260 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 27, 2026 · View company records in RevenueBase
16	GSI Environmental INC	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	259 contacts →
	Exact match “GSI Environmental, Inc.(GSI), is an environmental engineering and science consulting firm committed to measuring, analyzing, and solving complex environmental problems around the…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17	Office Of The County Engineer	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	501-1,000	248 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 27, 2026 · View company records in RevenueBase
18	Ehra Engineering	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	247 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 27, 2026 · View company records in RevenueBase
19	NEW Tech Global	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	51-200	245 contacts →
	Exact match “New Tech Global (NTG) is comprised of 5 different business units: New Tech Global Ventures: Upstream Oil & Gas consultancy services, and W-2 professional placement services for…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20	DBR	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	227 contacts →
	Exact match “Founded in 1972, DBR has evolved into the premier MEP engineering firm in Texas, providing mechanical, electrical, and plumbing engineering services, as well as building…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21	HVJ Associates	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	51-200	199 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 27, 2026 · View company records in RevenueBase
22	IDS Engineering Group	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	51-200	182 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 27, 2026 · View company records in RevenueBase
23	Zentech Incorporated	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	51-200	181 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 27, 2026 · View company records in RevenueBase
24	Kenmor Electric Company	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	152 contacts →
	Exact match “KenMor Electric is recognized for its service and craftsmanship.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25	PPI Quality & Engineering, LLC	Exact match	Houston, TX, United StatesHQ recorded Sep 27, 2026	201-500	147 contacts →
	Exact match “PPI Quality & Engineering, a member of the Kiwa group of companies, saves its clients millions by providing economic solutions for complicated projects for the renewable energy…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “engineering consultancy firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 537 engineering consultancy firms based in Houston, United States

See the full list, filter by size, metro and specialty, and access 10,620 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Engineering consultancy firms based in Houston, United States at a glance

As of Sep 27, 2026

36.4%Verified-email coverage

54.4Average contacts per company

11-50Median size (employees)

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

220

11-50

207

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 537 companies.

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 “engineering consultancy firms” 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 10,620 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 27, 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.

Engineering consultancy firms by metro in the United States

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

How many engineering consultancy firms are there based in Houston, United States?

RevenueBase identified 537 company matches for engineering consultancy firms 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?

S&b 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 engineering consultancy firms?

Houston leads the United States with 537 company records, followed by New York (412) and Chicago (189).

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 10,620 professional contacts with verified work emails tracked across these 537 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 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 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.