Company lists · Data refreshed September 2026
Top 25 Ehs consultancies based in San Diego, United States
RevenueBase identified 66 ehs consultancies headquartered in San Diego, United States as of September 2026 and tracks 796 professional contacts across them, including 343 with verified work emails. Houston is the largest hub.
This list covers ehs consultancies headquartered in San Diego, 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.
The 25 largest ehs consultancies based in San Diego, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 94 contacts → | ||||
Indirect evidence “MA Engineers delivers innovative, sustainable, energy-saving design solutions.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 2 | 82 contacts → | ||||
Indirect evidence “SMART Safety Group, founded in 2003, is a full service safety company providing safety service, staffing, training and products.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 3 | 74 contacts → | ||||
Indirect evidence “Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 4 | 57 contacts → | ||||
Indirect evidence “McParlane & Associates, Inc.(MPA) is a full-service mechanical, electrical, and plumbing (MEP) engineering consulting firm who delivers an integrated approach in cost-effective…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 5 | 48 contacts → | ||||
Indirect evidence “Company Overview Founded in 1996, KMEA is headquartered in San Diego, California, and has an operations office in San Antonio, TX.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 6 | 40 contacts → | ||||
Indirect evidence “Trevet is a civil and environmental consulting company headquartered in San Diego, California.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 7 | 39 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 8 | 37 contacts → | ||||
Indirect evidence “Hargis + Associates, Inc.(H+A) is an employee-owned, environmental consulting and engineering firm founded in 1979 with a commitment to providing high-quality, cost-effective…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 9 | 32 contacts → | ||||
Indirect evidence “Founded in San Diego, California, in 2004, SC Engineers is an industry leader in mechanical, electrical, and plumbing (MEP) planning and design, energy efficiency, building…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 10 | 29 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 11 | 23 contacts → | ||||
Indirect evidence “At 120 Degreez, our approach combines decades of deep MEP engineering expertise with cutting-edge tools and technologies to deliver high-performance solutions custom-engineered…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 12 | 15 contacts → | ||||
Indirect evidence “Torrey Pines Environmental is an environmental consulting firm established in 2021 as a collaboration between biologists with over 35 years of combined experience.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 contacts → | ||||
Indirect evidence “Blackhawk Environmental, a certified DVBE / SDVOSB / City of San Diego SLBE, provides a wide range of cost-effective environmental consulting services in biological & water…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 14 | 11 contacts → | ||||
Indirect evidence “BlueScape is a progressive air quality and environmental services firm located in the Western US that specializes in permitting and compliance services.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 contacts → | ||||
Indirect evidence “Akela Engineering and Consulting is a full-service Mechanical, Electrical, and Plumbing firm providing engineering and consulting services to the construction industry in…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 17 | 9 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Indirect evidence “We aim to get more sustainability & energy-saving upgrades implemented in buildings throughout North America by performing these services among others: • Analysis of Net Operating…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Indirect evidence “Strategic HR Advisory specializes in HR consulting services for small to medium-size employers.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Indirect evidence “At Air Check Solutions, LLC (ACS, LLC) our mission is to minimize environmental risks and protect the public health by providing to every client expert knowledge and prompt data…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Indirect evidence “Aurora Industrial Hygiene's mission is to provide the highest quality industrial hygiene services to each of its customers through professional excellence, qualified staff…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “Argo Performance provides commissioning and consulting services to commercial and industrial clients that have facilities in California.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “Rely Environmental provides top-notch compliance consulting and management services to businesses, hospitals and public agencies throughout Southern California.” Source: RevenueBase Database · checked Sep 24, 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: ehs consultancies. 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 ehs consultancies.
- Partial evidence
- Its own public description names part of ehs consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name ehs consultancies. 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 66 ehs consultancies based in San Diego, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 343 reachable decision-makers.
Free signup · no credit card
Ehs consultancies based in San Diego, United States at a glance
As of Sep 24, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 66 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 ehs consultancies, 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 San Diego, United States whose own description of what they do matches “ehs consultancies”. 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 ehs consultancies), 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 ehs consultancies, and records with no verified work email. Companies headquartered outside San Diego 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, 343 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.
Ehs consultancies by metro in the United States
- Ehs consultancies in Houston237
- Ehs consultancies in New York162
- Ehs consultancies in San Diego66
- Ehs consultancies in Austin65
- Ehs consultancies in Chicago65
- Ehs consultancies in Denver64
- Ehs consultancies in Atlanta61
- Ehs consultancies in Los Angeles57
- Ehs consultancies in Seattle52
- Ehs consultancies in Dallas51
- Ehs consultancies in Phoenix47
- Ehs consultancies in Miami46
- Ehs consultancies in San Francisco46
- Ehs consultancies in Tampa45
- Ehs consultancies in Washington44
- Ehs consultancies in Indianapolis43
- Ehs consultancies in Orlando39
- Ehs consultancies in Charlotte37
- Ehs consultancies in San Antonio37
- Ehs consultancies in Portland34
- Ehs consultancies in Irvine31
- Ehs consultancies in Columbus28
- Ehs consultancies in Raleigh28
- Ehs consultancies in Las Vegas25
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 ehs consultancies, 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 ehs consultancies are there based in San Diego, United States?
RevenueBase identified 66 ehs consultancies headquartered in San Diego, 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?
MA Engineers, INC, headquartered in San Diego, tops this list with the largest team on record.
Which city has the most ehs consultancies?
Houston leads with 237 headquartered companies, followed by New York (162) and San Diego (66).
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 343 verified decision-maker contacts tracked across these 66 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 66 ehs consultancies based in San Diego, United States. Start with a free account, no credit card.
Download this list →Related lists
Ehs consultancies by geography
- Ehs consultancies based in Brazil
- Ehs consultancies based in the United States
- Ehs consultancies based in the United Kingdom
- Ehs consultancies based in France
- Ehs consultancies based in Italy
- Ehs consultancies based in Australia
- Ehs consultancies based in Germany
- Ehs consultancies based in Spain
- Ehs consultancies based in Canada
- Ehs consultancies based in the Netherlands
- Ehs consultancies based in South Africa
- Ehs consultancies based in Mexico
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.