Company lists · Data refreshed September 2026

Top 25 Mechanical engineering firms based in Houston, United States

Name: Mechanical engineering 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 17, 2026 69 companies tracked

RevenueBase identified 69 mechanical engineering firms headquartered in Houston, United States as of September 2026 and tracks 770 professional contacts across them, including 305 with verified work emails. Houston is the largest hub.

This list covers mechanical engineering firms 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 17, 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 17, 2026 86% judged on-target in blind review

69Companies

770Contacts tracked

305Verified emails

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

Ranked by team size

Top 25 of 69 mechanical engineering firms based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to mechanical engineering firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Shah Smith & Associates, INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	134 contacts →
	Strong evidence “Shah Smith & Associates, Inc.(SSA) is a 120+ employee Mechanical, Electrical, and Plumbing (MEP) consulting engineering firm with offices in Houston, Austin & Dallas.” Source: RevenueBase Database · checked Sep 17, 2026
2	Decon LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	55 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 17, 2026
3	MEP Green Design & Build, Pllc	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	53 contacts →
	Strong evidence “MEP Green Design & Build, PLLC,(MEPG) is a full-service engineering firm made up of a dedicated team of professionals offering expertise in Mechanical, Electrical, Plumbing and…” Source: RevenueBase Database · checked Sep 17, 2026
4	Blackline Engineering, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	46 contacts →
	Partial evidence “Blackline Engineering, LLC is a Houston based engineering consulting firm that offers innovative design and project management services that are tailored for each client.” Source: RevenueBase Database · checked Sep 17, 2026
5	Pinnacle Structural Engineers	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	33 contacts →
	Partial evidence “Pinnacle is a structural engineering consulting firm providing services on a wide variety of project types, including: commercial, healthcare, workplace, institutional and…” Source: RevenueBase Database · checked Sep 17, 2026
6	Collaborative Engineering Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	26 contacts →
	Partial evidence “At Collaborative Engineering Group, we believe the best solutions come from working together.” Source: RevenueBase Database · checked Sep 17, 2026
7	LEE Truong & YU Engineers, Pllc LTY Engineers	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	18 contacts →
	Strong evidence “Lee Truong & Yu Engineers, PLLC, is a full-service Mechanical, Electrical and Plumbing engineering consulting firm with offices in Dallas and Houston.” Source: RevenueBase Database · checked Sep 17, 2026
8	Leaf Engineers	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	17 contacts →
	Strong evidence “LEAF Engineers provides comprehensive mechanical, electrical and plumbing/fire protection engineering design services along with technology, AV and security consulting services to…” Source: RevenueBase Database · checked Sep 17, 2026
9	ESM Engineers	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	17 contacts →
	Partial evidence “At ESM Engineers, we're artisans in engineering, transforming client visions into plans that exceed standards and codes.” Source: RevenueBase Database · checked Sep 17, 2026
10	Garner Fritsche Engineering	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	15 contacts →
	Partial evidence “Started in 2006, Garner Fritsche Engineering continually delivers high-quality designs and consulting services to healthcare, institutional and commercial clients.” Source: RevenueBase Database · checked Sep 17, 2026
11	SSP Engineering And Consulting	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	15 contacts →
	Partial evidence “SSP Engineering & Consulting is a consulting firm based in the Houston Metropolitan area.” Source: RevenueBase Database · checked Sep 17, 2026
12	HGE Consulting, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	14 contacts →
	Partial evidence “We are a service oriented firm that provides professional consulting engineering, design, construction documents for HVAC, Plumbing, Electrical, Fire Protection Systems…” Source: RevenueBase Database · checked Sep 17, 2026
13	Bovay Engineers, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	14 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
14	RSG Engineering INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “RSG Engineering is a premier Engineering, Architectural design and Construction Management provider.” Source: RevenueBase Database · checked Sep 17, 2026
15	Flesch Engineering, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
16	TLC Engineering INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “TLC Engineering, Inc.(TLC) is a full service engineering company.” Source: RevenueBase Database · checked Sep 17, 2026
17	CJG Engineers	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “Founded in 1981, CJG Engineers is a Consulting Structural Engineering firm with offices in Austin and Houston, Texas.” Source: RevenueBase Database · checked Sep 17, 2026
18	I-Solids	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “Knight Engineering Solutions LLC dba i-SOLIDS is a specialized team of engineers, designers, and programmers who provide technical consulting and turnkey prototyping solutions: •…” Source: RevenueBase Database · checked Sep 17, 2026
19	Dawson VAN Orden DVO	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	7 contacts →
	Partial evidence “Dawson Van Orden is a rapidly growing, family-owned, Civil, Structural, MEP and Technology Consulting Engineering firm.” Source: RevenueBase Database · checked Sep 17, 2026
20	3h Engineering & Construction, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	6 contacts →
	Partial evidence “3h Engineering & Construction, Inc, established in 2017, is an engineering firm servicing the residential, commercial and industrial industry for civil, structural, structural…” Source: RevenueBase Database · checked Sep 17, 2026
21	Schultz Burman Engineering, Pllc	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	5 contacts →
	Partial evidence “Schultz Burman Engineering, PLLC is a professional structural engineering consulting firm that offers a full spectrum of in-house design and construction administration services.” Source: RevenueBase Database · checked Sep 17, 2026
22	Vera Ernest Consulting INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Partial evidence “Not all engineers and engineering companies deliver the same level of engineering expertise.” Source: RevenueBase Database · checked Sep 17, 2026
23	Jones Engineers, L.P	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	Thomas & Dunne Engineers, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “T&D Engineers - Houston Texas.” Source: RevenueBase Database · checked Sep 17, 2026
25	Charles D. Gooden Consulting Engineers, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	11-50	2 contacts →
	Indirect evidence “Charles D.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: mechanical engineering firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names mechanical engineering firms.
Partial evidence: Its own public description names part of mechanical engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mechanical engineering firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 69 mechanical engineering firms based in Houston, United States

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Mechanical engineering firms based in Houston, United States at a glance

As of Sep 17, 2026

39.6%Verified-email coverage

11.2Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

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 69 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 mechanical engineering firms, 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 “mechanical engineering firms”. 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 mechanical engineering firms), 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 mechanical engineering firms, 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, 305 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 17, 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.

Mechanical engineering firms by metro in the United States

Mechanical engineering firms in Houston69
Mechanical engineering firms in New York58
Mechanical engineering firms in Austin42
Mechanical engineering firms in San Diego42
Mechanical engineering firms in Chicago33
Mechanical engineering firms in Atlanta31
Mechanical engineering firms in Dallas27
Mechanical engineering firms in San Francisco27
Mechanical engineering firms in Miami26
Mechanical engineering firms in Charlotte25
Mechanical engineering firms in Phoenix25

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 mechanical engineering firms, 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 mechanical engineering firms are there based in Houston, United States?

RevenueBase identified 69 mechanical engineering firms 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?

Shah Smith & Associates, INC, headquartered in Houston, tops this list with the largest team on record.

Which city has the most mechanical engineering firms?

Houston leads with 69 headquartered companies, followed by New York (58) and Austin (42).

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 305 verified decision-maker contacts tracked across these 69 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 17, 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.