Company lists · Data refreshed September 2026

Top 25 Infrastructure planning consultants based in Los Angeles, United States

Name: Infrastructure planning consultants 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 20, 2026 61 companies tracked

RevenueBase identified 61 infrastructure planning consultants headquartered in Los Angeles, United States as of September 2026 and tracks 2,118 professional contacts across them, including 1,019 with verified work emails. Houston is the largest hub.

This list covers infrastructure planning consultants 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 20, 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 20, 2026 86% judged on-target in blind review

61Companies

2,118Contacts tracked

1,019Verified emails

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The 25 largest infrastructure planning consultants based in Los Angeles, United States

Ranked by team size

Top 25 of 61 infrastructure planning consultants based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure planning consultants: 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 20, 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 20, 2026
2	Cordoba Corporation	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 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 20, 2026
3	Gruen Associates	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	51-200	73 contacts →
	Indirect evidence “Since 1946, Gruen Associates succeeds as one of Los Angeles’ best known legacy firms with a deep portfolio of landmark projects.” Source: RevenueBase Database · checked Sep 20, 2026
4	Morgner Construction Management Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	51-200	60 contacts →
	Indirect evidence “Professional Management Services Company specialized in Transit, Highway and Energy Industries.” Source: RevenueBase Database · checked Sep 20, 2026
5	JGM	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 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 20, 2026
6	Aecom Technology Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	11-50	43 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
7	V&a, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	11-50	26 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
8	US Rail Systems	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	51-200	24 contacts →
	Indirect evidence “Headquartered in Los Angeles, California, with strategic offices in Florida, New York, Texas, and Washington, US Rail Systems® is a nationally recognized authority in the…” Source: RevenueBase Database · checked Sep 20, 2026
9	Impact Sciences	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 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 20, 2026
10	The Alliance Group Consulting	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	1-10	16 contacts →
	Indirect 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 20, 2026
11	Analysis & Solutions Consultants	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 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 20, 2026
12	C2pm	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect 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 20, 2026
13	Capital Project Intelligence	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	51-200	13 contacts →
	Partial evidence “CPI is a consulting and professional services firm specializing in AI-enhanced solutions for infrastructure and utility clients.” Source: RevenueBase Database · checked Sep 20, 2026
14	D R Consultants & Designers, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 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 20, 2026
15	The Robert Group	Indirect evidence	Los Angeles, United StatesHQ checked Sep 20, 2026	1-10	10 contacts →
	Indirect evidence “The Robert Group, based in Los Angeles and with a smaller but highly respected presence in San Francisco, is an established public affairs and strategic communications firm…” Source: RevenueBase Database · checked Sep 20, 2026
16	Grace Partnership, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
17	DK Engineer, Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	1-10	9 contacts →
	Indirect 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 20, 2026
18	Parthenon Corporation	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “Parthenon Corporation is a leading provider of consulting, engineering, and construction services worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
19	Urban ONE	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	1-10	6 contacts →
	Indirect evidence “Urban One is a boutique Los Angeles based firm that specializes in the management of complex urban development projects for public and private clients.” Source: RevenueBase Database · checked Sep 20, 2026
20	Steiner Consulting INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial evidence “Steiner Consulting, Inc.(SCI) is a heavy civil-engineering consulting firm specializing in driving Southern California infrastructure.” Source: RevenueBase Database · checked Sep 20, 2026
21	Suenram & Associates, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	11-50	4 contacts →
	Indirect 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 20, 2026
22	SHA Analytics, LLC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	1-10	4 contacts →
	Partial 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 20, 2026
23	Rheia Consulting	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial 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 20, 2026
24	Harris Consulting Group	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect 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 20, 2026
25	FLO Engineering INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 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 20, 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: infrastructure planning consultants. 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 infrastructure planning consultants.
Partial evidence: Its own public description names part of infrastructure planning consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure planning consultants. 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 61 infrastructure planning consultants based in Los Angeles, United States

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Infrastructure planning consultants based in Los Angeles, United States at a glance

As of Sep 20, 2026

48.1%Verified-email coverage

34.7Average contacts per company

1-10Median size (employees)

231.1%Largest-city concentration · Houston

Sep 20, 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 61 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 infrastructure planning consultants, 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 “infrastructure planning consultants”. 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 infrastructure planning consultants), 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 infrastructure planning consultants, 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, 1,019 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 20, 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.

Infrastructure planning consultants 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 infrastructure planning consultants, 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 infrastructure planning consultants are there based in Los Angeles, United States?

RevenueBase identified 61 infrastructure planning consultants 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 infrastructure planning consultants?

Houston leads with 141 headquartered companies, followed by New York (115) and Chicago (79).

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 1,019 verified decision-maker contacts tracked across these 61 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 20, 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.