Company lists · Data refreshed September 2026

Top 25 Municipal infrastructure consulting firms based in Los Angeles, United States

Name: Municipal infrastructure consulting firms 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 29, 2026 42 companies tracked

RevenueBase identified 42 municipal infrastructure consulting firms headquartered in Los Angeles, United States as of September 2026 and tracks 1,974 professional contacts across them, including 948 with verified work emails. Across the United States, Houston is the largest hub for this category (116 companies); Los Angeles has 42.

This list covers municipal infrastructure consulting firms 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 29, 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 29, 2026 86% judged on-target in blind review

42Companies

1,974Contacts tracked

948Verified emails

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The 25 largest municipal infrastructure consulting firms based in Los Angeles, United States

Ranked by team size

Top 25 of 42 municipal infrastructure consulting firms based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to municipal infrastructure consulting 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	Psomas	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 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 29, 2026
2	Cordoba Corporation	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	501-1,000	516 contacts →
	Indirect 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 29, 2026
3	Morgner Construction Management Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	51-200	60 contacts →
	Indirect evidence “Professional Management Services Company specialized in Transit, Highway and Energy Industries.” Source: RevenueBase Database · checked Sep 29, 2026
4	JGM	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 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 29, 2026
5	Aecom Technology Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	43 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
6	V&a, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	26 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
7	Watearth	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	22 contacts →
	Indirect evidence “Watearth, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
8	Impact Sciences	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 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 29, 2026
9	The Alliance Group Consulting	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 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 29, 2026
10	BA INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	15 contacts →
	Indirect 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 29, 2026
11	C2pm	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 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 29, 2026
12	D R Consultants & Designers, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	10 contacts →
	Indirect evidence “DRC, a public works engineering firm, in business for 40 years, provides expert level Transportation; Water/Wastewater engineering and Construction Management services to repeat…” Source: RevenueBase Database · checked Sep 29, 2026
13	DK Engineer, Corp	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1-10	9 contacts →
	Partial evidence “DK Engineer, Corp (DKE) is a boutique civil engineering consulting firm that provides design and construction administration services for construction projects throughout Southern…” Source: RevenueBase Database · checked Sep 29, 2026
14	EPD Consultants, INC	Indirect evidence	Los Angeles, United StatesHQ checked Sep 29, 2026	1-10	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
15	Parthenon Corporation	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	8 contacts →
	Partial evidence “Parthenon Corporation is a leading provider of consulting, engineering, and construction services worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
16	ZILA	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	6 contacts →
	Indirect evidence “Zila, is a Stormwater Management & Civil Engineering Co, which provides stormwater management and civil engineering related services including stormwater pollution prevention plan…” Source: RevenueBase Database · checked Sep 29, 2026
17	Steiner Consulting INC	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Strong evidence “Steiner Consulting, Inc.(SCI) is a heavy civil-engineering consulting firm specializing in driving Southern California infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026
18	Suenram & Associates, INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	4 contacts →
	Partial evidence “Suenram & Associates, Inc.(SAI) is a Los Angeles-based certified small business enterprise providing civil engineering design and consulting services for public agencies and…” Source: RevenueBase Database · checked Sep 29, 2026
19	SHA Analytics, LLC	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Strong evidence “SHA Analytics, LLC provides management consulting, quantitative analysis and research services to support sustainable infrastructure projects, programs and policies in the fields…” Source: RevenueBase Database · checked Sep 29, 2026
20	Rheia Consulting	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Strong evidence “Rheia Consulting offers our clients - public agencies and private builders and operators - advisory services to support the successful delivery of complex infrastructure projects…” Source: RevenueBase Database · checked Sep 29, 2026
21	Harris Consulting Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Partial evidence “Harris Consulting Group has established itself as one of the premier Construction Management and Consulting firms in the region.” Source: RevenueBase Database · checked Sep 29, 2026
22	FLO Engineering INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	2 contacts →
	Indirect evidence “At Flo Engineering, We work collaboratively with government agencies, private clients and the communities we serve, delivering honest, strategic, and timely solutions.” Source: RevenueBase Database · checked Sep 29, 2026
23	Hmfairview	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1-10	2 contacts →
	Partial evidence “HMFairview is a capital projects infrastructure management and advisory firm that specializes in leading the projects from inception through to delivery.” Source: RevenueBase Database · checked Sep 29, 2026
24	M3 Services, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	11-50	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
25	Optitrans Engineering, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1-10	2 contacts →
	Indirect evidence “OPTITRANS is a DBE/MBE/SBE firm established in 2014 to provide professional transportation engineering planning and design services to public agencies for public works projects.” Source: RevenueBase Database · checked Sep 29, 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: municipal infrastructure consulting 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 municipal infrastructure consulting firms.
Partial evidence: Its own public description names part of municipal infrastructure consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name municipal infrastructure consulting 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 42 municipal infrastructure consulting firms based in Los Angeles, United States

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Municipal infrastructure consulting firms based in Los Angeles, United States at a glance

As of Sep 29, 2026

48.0%Verified-email coverage

47.0Average contacts per company

1-10Median size (employees)

Sep 29, 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 42 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 municipal infrastructure consulting 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 Los Angeles, United States whose own description of what they do matches “municipal infrastructure consulting 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 municipal infrastructure consulting 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 municipal infrastructure consulting firms, 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, 948 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 29, 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.

Municipal infrastructure consulting firms 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 municipal infrastructure consulting 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 municipal infrastructure consulting firms are there based in Los Angeles, United States?

RevenueBase identified 42 municipal infrastructure consulting firms 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 in the United States has the most municipal infrastructure consulting firms?

Houston leads the United States with 116 headquartered companies, followed by New York (88) and Chicago (63). Los Angeles has 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 948 verified decision-maker contacts tracked across these 42 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 29, 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.