Company lists · Data refreshed October 2026

Top 25 Plant design consulting services based in Houston, United States

Name: Plant design consulting services based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 28, 2026 122 companies tracked

RevenueBase identified 122 company matches for plant design consulting services associated with Houston, United States as of October 2026 and tracks 11,787 professional contacts across them, including 3,364 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for plant design consulting services 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 October 28, 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 Oct 28, 2026 How this list was built

122Companies

11,787Contacts tracked

3,364Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest plant design consulting services based in Houston, United States

Ranked by team size

Top 25 of 122 company matches for plant design consulting services based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 28, 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 Oct 28, 2026	5,001-10,000	3,615 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 · Oct 28, 2026 · View company records in RevenueBase
2	LJA	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	1,001-5,000	2,148 contacts →
	Exact match “Employee-Owned.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
3	Audubon Companies	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	1,001-5,000	1,652 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 · Oct 28, 2026 · View company records in RevenueBase
4	Ingenero	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	501-1,000	551 contacts →
	Exact match “Ingenero's goal is to be the best process engineering firm by delivering the highest quality service and software solutions at the lowest cost.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
5	Energy Architecture, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	50 contacts →
	Exact match “Energy Architecture is a specialized architecture firm based in Houston, serving clients at the forefront of innovation, research, and discovery.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
6	Blackline Engineering, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	49 contacts →
	Exact match “Blackline Engineering, LLC is a Houston based engineering consulting firm that offers innovative design and project management services that are tailored for each client.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
7	Allserv	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	48 contacts →
	Exact match “At ALLSERV, we help companies reduce inventory costs, improve warehouse operations, and enhance asset availability through expert consulting and data-driven solutions.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
8	TKE Engineering & Design	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	45 contacts →
	Exact match “Who We Are TKE was founded in Houston, Texas in 1992 by Terry Eleiott, PE and his wife Kathy Eleiott.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
9	Midstream & Terminal Services LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	30 contacts →
	Exact match “Midstream & Terminal Services (MTS) is a privately-owned registered architectural and engineering company that serves a diverse set of industries.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
10	X Celerant	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	51-200	28 contacts →
	Exact match “At X/Celerant, we help organizations in Chemicals, Construction, Manufacturing, and Energy unlock trapped value, optimize performance, and drive measurable, lasting results.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
11	Rice-Brothers	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	201-500	28 contacts →
	Exact match “Rice-Brothers \| Industrial & Commercial Construction At Rice-Brothers we specialize in delivering high-performance solutions for industrial and commercial clients.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
12	Reliable	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	1-10	23 contacts →
	Exact match “We are committed to empowering manufacturing and process plants with actionable insights and innovative strategies that drive lean operations, enhance efficiency, and boost…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
13	Gr2 Engineering INC	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	1-10	21 contacts →
	Exact match “GR2 Engineering provides smart, expedited solutions tailored around a wide variety of technical, geographic, legislative, and environmental challenges.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
14	Ascent Engineering INC	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	20 contacts →
	Exact match “Ascent Engineering, Inc.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
15	Naslan Angola LDA	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	17 contacts →
	Exact match “Naslan Angola Lda is a member of the NASLAN GROUP.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
16	Loma Architecture	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	16 contacts →
	Exact match “LOMA Architecture is a full-service architectural firm based in Houston, Texas.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
17	N&a Engineering Solutions, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	201-500	16 contacts →
	Exact match “N&A USA Engineering Solutions, Inc was founded in 2015 and is a specialized in multidisciplinary engineering & project management for medium & large-sized projects, working across…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
18	Hightec Energy	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	15 contacts →
	Exact match “HighTec Energy is a full-service Engineering, Technology, and Business Consulting Firm.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
19	Spark Thought	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	15 contacts →
	Exact match “At Spark Thought, we help energy and industrial companies thrive by delivering practical, results-driven consulting in three mission-critical areas: Regulatory Compliance Services…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
20	SSP Engineering And Consulting	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	14 contacts →
	Exact match “SSP Engineering & Consulting is a consulting firm based in the Houston Metropolitan area.” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
21	HGE Consulting, INC	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	14 contacts →
	Exact match “We are a service oriented firm that provides professional consulting engineering, design, construction documents for HVAC, Plumbing, Electrical, Fire Protection Systems…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
22	Flesch Engineering, LLC	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	11 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
23	I-Solids	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	11-50	10 contacts →
	Exact match “Knight Engineering Solutions LLC dba i-SOLIDS is a specialized team of engineers, designers, and programmers who provide technical consulting and turnkey prototyping solutions: •…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
24	Kalluri Group, Inc. KGI	Exact match	Houston, TX, United StatesHQ recorded Oct 28, 2026	1-10	9 contacts →
	Exact match “Kalluri Group, Inc.(KGI) is a consulting engineering company specializing in the design of Water and Wastewater Treatment Plants for refineries, petrochemical plants…” Recorded in the RevenueBase company graph · Oct 28, 2026 · View company records in RevenueBase
25	Partners In Drilling	Exact match	Houston, United StatesHQ recorded Oct 28, 2026	11-50	9 contacts →
	Exact match “Founded in 2012 by Ralph Doughty, Partners In Drilling is an independent consulting firm with over 100 years of staff experience and a proven track record of providing worldwide…” Recorded in the RevenueBase company graph · Oct 28, 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 “plant design consulting services”. 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 122 plant design consulting services based in Houston, United States

See the full list, filter by size, metro and specialty, and access 3,364 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Plant design consulting services based in Houston, United States at a glance

As of Oct 28, 2026

28.5%Verified-email coverage

96.6Average contacts per company

11-50Median size (employees)

Oct 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 122 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 “plant design consulting services” 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 3,364 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 October 28, 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.

Plant design consulting services 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 “plant design consulting services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many plant design consulting services are there based in Houston, United States?

RevenueBase identified 122 company matches for plant design consulting services associated with Houston, United States as of October 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 plant design consulting services?

Houston leads the United States with 122 company records, followed by New York (58) and Atlanta (42).

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 3,364 professional contacts with verified work emails tracked across these 122 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 October 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 122 plant design consulting services based in Houston, United States. Start with a free account, no credit card.

Download this list →

Related lists

Plant design consulting services by geography

Browse the directory

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.