Company lists · Data refreshed September 2026

Top 25 Engineering consultancy companies based in Lafayette, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 41 companies tracked

RevenueBase identified 41 company matches for engineering consultancy companies associated with Lafayette, United States as of September 2026 and tracks 1,426 professional contacts across them, including 544 with verified work emails. Across the United States, Houston is the largest hub for this category (484 companies); Lafayette has 41.

This list covers company matches for engineering consultancy companies associated with Lafayette, 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 24, 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 24, 2026 How this list was built

41Companies

1,426Contacts tracked

544Verified emails

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The 25 largest engineering consultancy companies based in Lafayette, United States

Ranked by team size

Top 25 of 41 company matches for engineering consultancy companies based in Lafayette, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 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	ATC Group Services LLC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	865 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	Fenstermaker	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	201-500	205 contacts →
	Exact match “C.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	Stokes & Spiehler	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	76 contacts →
	Exact match “March 21, 2023, marked an important milestone for Stokes & Spiehler.a half century serving the oil & gas industry!” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
4	ADG Engineering	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	31 contacts →
	Exact match “Established in 1981, ADG Engineering is the definitive choice in complex, critical systems engineering.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
5	Chapman Consulting, INC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	29 contacts →
	Exact match “Chapman Consulting, Inc.(CCI) is a full-service engineering and project management consulting firm serving all sectors of the petroleum industry.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	ECL Engineering Corporation Of Louisiana	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	51-200	25 contacts →
	Exact match “ECL, a multi-disciplined engineering firm servicing the oil and gas industry since 1982, provides detailed design packages to customers for upstream projects worldwide.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	Petra Consultants, INC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	18 contacts →
	Exact match “For more than 24 years, Petra Consultants has provided Engineering, Design, Regulatory, Project Management, and Construction Management services to energy producers.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
8	Tbird Design Services Corp	Exact match	Lafayette, IN, United StatesHQ recorded Sep 24, 2026	11-50	18 contacts →
	Exact match “TBIRD Design Services Corporation is a modern and forward thinking corporation with an experienced staff, established on a firm foundation of technical excellence and customer…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
9	Huval & Associates, INC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	16 contacts →
	Exact match “OUR MISSION: To relentlessly provide our clients with exceptional service, innovation, quality, and value that has defined our reputation in the past and will sustain it in the…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
10	Practical Engineering Solutions PES	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	15 contacts →
	Exact match “Practical Engineering Solutions (PES) was founded in 2010 as a mechanical engineering project services firm focused on solving complex industrial challenges with speed, precision…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
11	Case International, INC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	13 contacts →
	Exact match “CASE International (CASE) is a professional engineering firm headquartered in Lafayette, Louisiana.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
12	Arkor Architects & Engineers	Exact match	Lafayette, IN, United StatesHQ recorded Sep 24, 2026	1-10	11 contacts →
	Exact match “ARKOR Architects & Engineers: Architecture and structural engineering services for commercial, industrial, and residential building projects.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
13	WMD Squared Engineering	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	9 contacts →
	Exact match “We love to tackle difficult design, drafting and engineering problems.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
14	Team Management & Consulting, LLC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	9 contacts →
	Exact match “Team Management & Consulting LLC is a leader in project management, decommissioning and abandonment, turnaround, tank and terminal, commissioning and startup, pipe structural…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
15	Upright Engineering	Exact match	Lafayette, CA, United StatesHQ recorded Sep 24, 2026	1-10	7 contacts →
	Exact match “Upright Engineering is an established structural and civil engineering firm based in Lafayette, California, serving the greater San Francisco Bay Area.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
16	Chalmers, Collins & Alwell, INC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	1-10	6 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
17	Sellers & Associates, INC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	6 contacts →
	Exact match “Our expertise covers a wide spectrum, from coastal protection and roadway enhancements to wastewater treatment and land surveying.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
18	Hurst & Associates, INC	Exact match	Lafayette, CO, United StatesHQ recorded Sep 24, 2026	11-50	5 contacts →
	Exact match “Providing excellence in design since 1986, Hurst & Associates provides civil engineering, landscape architecture, land planning, and surveying services to private and public…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
19	Parish Architecture	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	1-10	5 contacts →
	Exact match “Parish Architecture is positioned to provide the expertise and quality of service that only years of professional practice and experience could make possible.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
20	Kourco Environmental Services, INC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	4 contacts →
	Exact match “KourCo Environmental Services, Inc.(KES) is a certified Woman-Owned environmental consulting and service firm.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
21	Complete Project Solutions, INC	Exact match	Lafayette, CA, United StatesHQ recorded Sep 24, 2026	1-10	4 contacts →
	Exact match “We are an elite team of professionals dedicated to project delivery excellence.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
22	Prouet Architecture & Engineering	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	1-10	3 contacts →
	Exact match “A multi-disciplinary design firm based in Lafayette, Louisiana, celebrating over 40 years of professional service in our local communities and beyond.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
23	Foley Engineering, LLC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	1-10	2 contacts →
	Exact match “Foley Engineering, LLC provides professional engineering services to the oil industry in Louisiana and Texas.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
24	Heldenbrand Design Group, LLC H.D.G	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	1-10	2 contacts →
	Exact match “Since 2010, Heldenbrand Design Group has worked closely with clients across the oil & gas industry, marine, and industrial sectors.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
25	Mader Engineering INC	Exact match	Lafayette, LA, United StatesHQ recorded Sep 24, 2026	11-50	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 24, 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 companies”. 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 41 engineering consultancy companies based in Lafayette, United States

See the full list, filter by size, metro and specialty, and access 544 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Engineering consultancy companies based in Lafayette, United States at a glance

As of Sep 24, 2026

38.1%Verified-email coverage

34.8Average contacts per company

11-50Median size (employees)

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Lafayette, so it is reported there. Company counts and contact totals on this page are exact for Lafayette, over 41 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 Lafayette, United States whose business descriptions match “engineering consultancy companies” 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 544 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 24, 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 companies 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 companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many engineering consultancy companies are there based in Lafayette, United States?

RevenueBase identified 41 company matches for engineering consultancy companies associated with Lafayette, 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?

ATC Group Services LLC 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 companies?

Houston leads the United States with 484 company records, followed by New York (361) and Chicago (168). Lafayette has 41.

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 544 professional contacts with verified work emails tracked across these 41 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 24, 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.