Company lists · Data refreshed September 2026

Top 25 Environmental engineering firms based in San Francisco, United States

Name: Environmental engineering firms based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 36 companies tracked

RevenueBase identified 36 environmental engineering firms headquartered in San Francisco, United States as of September 2026 and tracks 1,744 professional contacts across them, including 1,069 with verified work emails. Houston is the largest hub.

This list covers environmental engineering firms headquartered in San Francisco, 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 16, 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 16, 2026 86% judged on-target in blind review

36Companies

1,744Contacts tracked

1,069Verified emails

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The 25 largest environmental engineering firms based in San Francisco, United States

Ranked by team size

Top 25 of 36 environmental engineering firms based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to environmental engineering 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	Environmental Science Associates	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	501-1,000	732 contacts →
	Partial evidence “ESA is a 100% employee-owned environmental consulting firm.” Source: RevenueBase Database · checked Sep 16, 2026
2	Glumac	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	201-500	386 contacts →
	Partial evidence “Glumac, a Tetra Tech Company, is a global leader in building engineering, committed to delivering a low carbon future for all.” Source: RevenueBase Database · checked Sep 16, 2026
3	Sherwood Design Engineers	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	51-200	125 contacts →
	Partial evidence “Sherwood Design Engineers is a site civil engineering practice committed to the optimal integration of ecology, infrastructure, and design.” Source: RevenueBase Database · checked Sep 16, 2026
4	Meyers Engineers	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	51-200	80 contacts →
	Indirect evidence “Welcome to MEYERS+ ENGINEERS!” Source: RevenueBase Database · checked Sep 16, 2026
5	Ags, INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	57 contacts →
	Partial evidence “Consulting engineers specialized in geosciences, seismic and engineering design.” Source: RevenueBase Database · checked Sep 16, 2026
6	CB Engineers	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	n/a	51 contacts →
	Partial evidence “CB Engineers is an award-winning mechanical, electrical, and plumbing (MEP) design firm that has been at the forefront of American engineering design and consultation for more…” Source: RevenueBase Database · checked Sep 16, 2026
7	Panorama Environmental, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	40 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
8	SRT Consultants	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	34 contacts →
	Strong evidence “A water resources and environmental engineering consulting firm based in the San Francisco Bay Area, with a second office location in Seattle, WA.” Source: RevenueBase Database · checked Sep 16, 2026
9	Applied Technology & Science A-T-S	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	25 contacts →
	Strong evidence “Applied Technology & Science (A-T-S) is an engineering and environmental consulting firm in San Francisco focused on water and energy delivery infrastructure, natural resource…” Source: RevenueBase Database · checked Sep 16, 2026
10	Gayner Engineers	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	51-200	23 contacts →
	Partial evidence “Gayner Engineers is a mechanical or industrial engineering company based out of 1133 Post St, San Francisco, California, United States.” Source: RevenueBase Database · checked Sep 16, 2026
11	Lotus Water	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	19 contacts →
	Partial evidence “Our staff of registered civil engineers, designers, planners, and LEED® accredited professionals provide water, civil engineering, and integrated design services to private and…” Source: RevenueBase Database · checked Sep 16, 2026
12	JOE Hill Consulting & Engineering Corporation	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	17 contacts →
	Partial evidence “Joe Hill Consulting & Engineering Corporation (JHCE) is a purpose-driven multidisciplinary engineering firm that specializes in complex, water-focused infrastructure projects.” Source: RevenueBase Database · checked Sep 16, 2026
13	Urban Design Consulting Engineers Udce	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “Formed in 2005 by highly experienced professionals in the industry, UDCE is an open-culture, consulting engineering firm dedicated to the success of our clients, team, and…” Source: RevenueBase Database · checked Sep 16, 2026
14	Aurora Environmental Services, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	13 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
15	MK Engineers INC	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	12 contacts →
	Strong evidence “MK Engineers Inc.(MKE) is a consulting engineering firm specializing in energy efficient and green sustainable design in the built environment.” Source: RevenueBase Database · checked Sep 16, 2026
16	Blucal	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	8 contacts →
	Partial evidence “BluCAL is an industry-leading environmentally friendly construction company & your trusted service provider for all Remediation, Abatement General Contracting, Construction…” Source: RevenueBase Database · checked Sep 16, 2026
17	Environova	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	8 contacts →
	Partial evidence “At EnviroNova, we create partnerships with our clients to build state-of-the-art environmental health and safety programs and also provide independent surveys and assessments when…” Source: RevenueBase Database · checked Sep 16, 2026
18	ADH Environmental	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	7 contacts →
	Strong evidence “ADH Environmental (ADH) is an environmental engineering, consulting, and management services corporation, serving the public and private sectors.” Source: RevenueBase Database · checked Sep 16, 2026
19	Mcgovern Mcdonald Engineers	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	6 contacts →
	Indirect evidence “Our mission is to to make our water pristine and available, our energy clean and sustainable, and our lifestyles healthy and robust.” Source: RevenueBase Database · checked Sep 16, 2026
20	Healthy Building Science, INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	5 contacts →
	Partial evidence “Healthy Building Science combines principles of green building and environmental science to offer a full range of services for both commercial and residential clients.” Source: RevenueBase Database · checked Sep 16, 2026
21	Otis Institute, INC	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Strong evidence “Otis Institute is a San Francisco Bay Area based office of talented engineering and management consulting specialists focused on providing integrated Environmental, Health and…” Source: RevenueBase Database · checked Sep 16, 2026
22	Edgcomb LAW Group, LLP	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	11-50	3 contacts →
	Partial evidence “Edgcomb Law Group, LLP is an AV-rated environmental law firm representing a diverse, loyal client base of Fortune 100 companies, small businesses, government agencies, community…” Source: RevenueBase Database · checked Sep 16, 2026
23	Climate Adaptive Systems	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
24	Envirosurvey, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	1 contacts →
	Indirect evidence “Founded in 1991, Envirosurvey, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
25	BV Engineering INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 16, 2026	1-10	1 contacts →
	Partial evidence “Professional Mechanical and Fire Protection Engineering Design Services-Heating, Ventilation and Air-Conditioning System Design -Plumbing System Design -Fire Protection System…” Source: RevenueBase Database · checked Sep 16, 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: environmental engineering 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 environmental engineering firms.
Partial evidence: Its own public description names part of environmental engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental engineering 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 36 environmental engineering firms based in San Francisco, United States

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Environmental engineering firms based in San Francisco, United States at a glance

As of Sep 16, 2026

61.3%Verified-email coverage

48.4Average contacts per company

11-50Median size (employees)

383.3%Largest-city concentration · Houston

Sep 16, 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 San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 36 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 environmental engineering 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 San Francisco, United States whose own description of what they do matches “environmental engineering 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 environmental engineering 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 environmental engineering firms, and records with no verified work email. Companies headquartered outside San Francisco 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, 1,069 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 16, 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.

Environmental engineering 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 environmental engineering 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 environmental engineering firms are there based in San Francisco, United States?

RevenueBase identified 36 environmental engineering firms headquartered in San Francisco, 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?

Environmental Science Associates, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most environmental engineering firms?

Houston leads with 138 headquartered companies, followed by New York (101) and Austin (73).

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 1,069 verified decision-maker contacts tracked across these 36 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 16, 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.