Company lists · Data refreshed September 2026
Top 25 Infrastructure advisory consultants based in Los Angeles, United States
RevenueBase identified 85 infrastructure advisory consultants headquartered in Los Angeles, United States as of September 2026 and tracks 2,332 professional contacts across them, including 1,145 with verified work emails. New York is the largest hub.
This list covers infrastructure advisory 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 21, 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.
The 25 largest infrastructure advisory consultants based in Los Angeles, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 748 contacts → | ||||
Indirect evidence “Our award-winning projects are produced through innovation, creativity, and technical expertise.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 132 contacts → | ||||
Indirect evidence “Established in 1953, John A.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 60 contacts → | ||||
Indirect evidence “Professional Management Services Company specialized in Transit, Highway and Energy Industries.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 43 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 26 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 15 contacts → | ||||
Indirect evidence “R&C is proud to have planned, designed and managed a diverse range of projects.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 13 contacts → | ||||
Indirect evidence “Johnston Marklee & Assoc is an Architecture and Planning company located in Los Angeles, California, United States.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 10 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 8 contacts → | ||||
Indirect evidence “CLMI Group is a Southern California Construction Management / Project Management firm providing estimating, scheduling, and support services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 8 contacts → | ||||
Indirect evidence “Parthenon Corporation is a leading provider of consulting, engineering, and construction services worldwide.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 7 contacts → | ||||
Partial evidence “At Mammoth, we specialize in program management and project controls services for construction projects in Transportation, Ports, Energy, Water/Wastewater, and Infrastructure.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 7 contacts → | ||||
Indirect evidence “Civil and Structural Consulting engineers.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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 21, 2026Thanks. The Data Team will review it. | |||||
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 advisory 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 advisory consultants.
- Partial evidence
- Its own public description names part of infrastructure advisory consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name infrastructure advisory 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 85 infrastructure advisory consultants based in Los Angeles, United States
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Infrastructure advisory consultants based in Los Angeles, United States at a glance
As of Sep 21, 2026Companies by employee count
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 85 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 advisory 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 advisory 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 advisory 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 advisory 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, 1,145 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 21, 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 advisory consultants by metro in the United States
- Infrastructure advisory consultants in New York214
- Infrastructure advisory consultants in Houston209
- Infrastructure advisory consultants in Chicago110
- Infrastructure advisory consultants in Washington105
- Infrastructure advisory consultants in Miami99
- Infrastructure advisory consultants in Atlanta91
- Infrastructure advisory consultants in Dallas88
- Infrastructure advisory consultants in Los Angeles85
- Infrastructure advisory consultants in Austin72
- Infrastructure advisory consultants in San Diego70
- Infrastructure advisory consultants in Seattle69
- Infrastructure advisory consultants in San Francisco67
- Infrastructure advisory consultants in Denver60
- Infrastructure advisory consultants in Orlando54
- Infrastructure advisory consultants in Portland53
- Infrastructure advisory consultants in Irvine52
- Infrastructure advisory consultants in Tampa51
- Infrastructure advisory consultants in Raleigh48
- Infrastructure advisory consultants in Charlotte44
- Infrastructure advisory consultants in Phoenix44
- Infrastructure advisory consultants in San Antonio42
- Infrastructure advisory consultants in Boston41
- Infrastructure advisory consultants in Indianapolis41
- Infrastructure advisory consultants in Columbus39
- Infrastructure advisory consultants in Columbia35
- Infrastructure advisory consultants in Jacksonville35
- Infrastructure advisory consultants in Sacramento35
- Infrastructure advisory consultants in Pittsburgh34
- Infrastructure advisory consultants in Las Vegas32
- Infrastructure advisory consultants in Nashville32
- Infrastructure advisory consultants in Minneapolis29
- Infrastructure advisory consultants in Arlington28
- Infrastructure advisory consultants in Baton Rouge27
- Infrastructure advisory consultants in Fort Lauderdale27
- Infrastructure advisory consultants in Oakland27
- Infrastructure advisory consultants in Fort Worth26
- Infrastructure advisory consultants in Philadelphia25
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 advisory 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 advisory consultants are there based in Los Angeles, United States?
RevenueBase identified 85 infrastructure advisory 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 advisory consultants?
New York leads with 214 headquartered companies, followed by Houston (209) and Chicago (110).
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 1,145 verified decision-maker contacts tracked across these 85 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 21, 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.
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