Company lists · Data refreshed September 2026

Top 25 Engineering consultancy companies based in Los Angeles, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 150 companies tracked

RevenueBase identified 150 engineering consultancy companies headquartered in Los Angeles, United States as of September 2026 and tracks 3,281 professional contacts across them, including 1,419 with verified work emails. Houston is the largest hub.

This list covers engineering consultancy companies headquartered in Los Angeles, 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 24, 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 24, 2026 86% judged on-target in blind review

150Companies

3,281Contacts tracked

1,419Verified emails

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

The 25 largest engineering consultancy companies based in Los Angeles, United States

Ranked by team size

Top 25 of 150 engineering consultancy companies based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to engineering consultancy companies: 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	Psomas	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	501-1,000	748 contacts →
	Indirect evidence “Our award-winning projects are produced through innovation, creativity, and technical expertise.” Source: RevenueBase Database · checked Sep 24, 2026
2	Cordoba Corporation	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	501-1,000	516 contacts →
	Partial evidence “CORDOBA CORPORATION is a California engineering, construction management, program management, and planning firm specializing in transportation, water, energy, education and…” Source: RevenueBase Database · checked Sep 24, 2026
3	PCM	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	n/a	211 contacts →
	Indirect evidence “Commercial Construction, CM/PM Services, General Contractor,” Source: RevenueBase Database · checked Sep 24, 2026
4	John A. Martin & Associates, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	51-200	132 contacts →
	Indirect evidence “Established in 1953, John A.” Source: RevenueBase Database · checked Sep 24, 2026
5	Saiful Bouquet Structural Engineers	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	51-200	88 contacts →
	Partial evidence “Saiful Bouquet is an award winning and innovative structural engineering firm that looks beyond the traditional boundaries of structural engineering, in order to provide…” Source: RevenueBase Database · checked Sep 24, 2026
6	Morgner Construction Management Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	51-200	60 contacts →
	Indirect evidence “Professional Management Services Company specialized in Transit, Highway and Energy Industries.” Source: RevenueBase Database · checked Sep 24, 2026
7	Brandow & Johnston	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	53 contacts →
	Indirect evidence “Our firm is proud to be identified among those who built the Los Angeles we see today.” Source: RevenueBase Database · checked Sep 24, 2026
8	Nabih Youssef & Associates	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	51-200	49 contacts →
	Partial evidence “At Nabih Youssef Associates Structural Engineers (NYA), we apply the world’s most advanced structural engineering approaches to deliver resilient, efficient, and future-ready…” Source: RevenueBase Database · checked Sep 24, 2026
9	JGM	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	51-200	47 contacts →
	Indirect evidence “JGM has offered a comprehensive array of design and construction related services to public and private sector clients for over 40 years.” Source: RevenueBase Database · checked Sep 24, 2026
10	Englekirk Structural Engineers Englekirk Institutional	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	51-200	43 contacts →
	Partial evidence “Englekirk fields two structural engineering firms specifically tailored to meet the challenges of the commercial and institutional market sectors.” Source: RevenueBase Database · checked Sep 24, 2026
11	Aecom Technology Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	43 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
12	Torres Construction Corporation	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	51-200	32 contacts →
	Indirect evidence “Torres Construction is an award winning Contractor with a wide range of experience in both commercial and industrial construction.” Source: RevenueBase Database · checked Sep 24, 2026
13	Gnarus Advisors LLC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	29 contacts →
	Partial evidence “Gnarus Advisors combines economic, scientific, engineering, and regulatory expertise to provide clients with multidimensional support on a wide range of challenges affecting their…” Source: RevenueBase Database · checked Sep 24, 2026
14	V&a, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	26 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
15	Terra-Petra	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	26 contacts →
	Indirect evidence “Environmental Division - Terra-Petra possess more than 80 years of collective experience in the environmental and soil gas mitigation fields.” Source: RevenueBase Database · checked Sep 24, 2026
16	Nous Engineering	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	21 contacts →
	Partial evidence “Nous Engineering is an innovative Structural Engineering firm based in Los Angeles.” Source: RevenueBase Database · checked Sep 24, 2026
17	Impact Sciences	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	18 contacts →
	Indirect evidence “Informing communities and creating a clear path to understanding are at the core of what we do at Impact Sciences.” Source: RevenueBase Database · checked Sep 24, 2026
18	The Alliance Group Consulting	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	1-10	16 contacts →
	Partial evidence “The Alliance Group Consulting (TAGC) is a California based transportation engineering firm which is located in Los Angeles and is certified as a SBE/VSBE/DBE/MBE/DGS firm.” Source: RevenueBase Database · checked Sep 24, 2026
19	BA INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	15 contacts →
	Partial evidence “BA Inc.(DBE/MBE/SBE) has been in business for 11 years; established and incorporated in 2004 to provide professional engineering design services to public agencies for public…” Source: RevenueBase Database · checked Sep 24, 2026
20	Analysis & Solutions Consultants	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	14 contacts →
	Partial evidence “Analysis & Solutions Consultants (ASC) plays a key role in the design and construction of many challenging projects.” Source: RevenueBase Database · checked Sep 24, 2026
21	C2pm	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	14 contacts →
	Partial evidence “C2PM stands at the forefront of the construction consulting landscape, offering a full spectrum of program management, construction management, and specialized engineering…” Source: RevenueBase Database · checked Sep 24, 2026
22	Capital Project Intelligence	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	51-200	13 contacts →
	Indirect evidence “CPI is a consulting and professional services firm specializing in AI-enhanced solutions for infrastructure and utility clients.” Source: RevenueBase Database · checked Sep 24, 2026
23	Innodez	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	13 contacts →
	Partial evidence “We are a design and engineering company with a passionate group of engineers that offers professional engineering design services for a range of clients in commercial and…” Source: RevenueBase Database · checked Sep 24, 2026
24	Creative Engineering Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	13 contacts →
	Partial evidence “Full MEP Consulting Engineering for Today's Construction Needs.” Source: RevenueBase Database · checked Sep 24, 2026
25	Melqart Inc. Structural Engineering	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	11-50	11 contacts →
	Indirect evidence “Melqart, Inc.” Source: RevenueBase Database · checked Sep 24, 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: engineering consultancy companies. 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 engineering consultancy companies.
Partial evidence: Its own public description names part of engineering consultancy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering consultancy companies. 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 150 engineering consultancy companies based in Los Angeles, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,419 reachable decision-makers.

Free signup · no credit card

View the full list →

Engineering consultancy companies based in Los Angeles, United States at a glance

As of Sep 24, 2026

43.2%Verified-email coverage

21.9Average contacts per company

1-10Median size (employees)

322.7%Largest-city concentration · Houston

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Los Angeles, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 150 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 engineering consultancy companies, 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 Los Angeles, United States whose own description of what they do matches “engineering consultancy companies”. 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 engineering consultancy companies), 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 engineering consultancy companies, and records with no verified work email. Companies headquartered outside Los Angeles 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, 1,419 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 24, 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.

Engineering consultancy companies by metro in the United States

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 engineering consultancy companies, 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 engineering consultancy companies are there based in Los Angeles, United States?

RevenueBase identified 150 engineering consultancy companies headquartered in Los Angeles, 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?

Psomas, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most engineering consultancy companies?

Houston leads with 484 headquartered companies, followed by New York (361) and Chicago (168).

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 1,419 verified decision-maker contacts tracked across these 150 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 24, 2026.

Ready to reach these companies? Verified emails and direct dials for all 150 engineering consultancy companies based in Los Angeles, United States. Start with a free account, no credit card.

Download this list →

Related lists

Engineering consultancy companies 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 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.