Company lists · Data refreshed September 2026

Top 25 City sustainability consultants based in Los Angeles, United States

Name: City sustainability 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 19, 2026 68 companies tracked

RevenueBase identified 68 city sustainability consultants headquartered in Los Angeles, United States as of September 2026 and tracks 1,375 professional contacts across them, including 727 with verified work emails. New York is the largest hub.

This list covers city sustainability 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 19, 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 19, 2026 86% judged on-target in blind review

68Companies

1,375Contacts tracked

727Verified emails

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The 25 largest city sustainability consultants based in Los Angeles, United States

Ranked by team size

Top 25 of 68 city sustainability consultants based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to city sustainability 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 19, 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 19, 2026
2	Nadel Architects	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	51-200	75 contacts →
	Indirect evidence “As a leading Los Angeles architectural firm with over 50 years of experience, we offer comprehensive design and planning services specializing in retail revitalization…” Source: RevenueBase Database · checked Sep 19, 2026
3	Gruen Associates	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 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 19, 2026
4	Partner Energy	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	51-200	57 contacts →
	Indirect evidence “Partner Energy, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
5	JGM	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 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 19, 2026
6	Aecom Technology Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	43 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
7	Somos Group	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “WHO WE ARE The SOMOS Group is a group of multidisciplinary think-and-do professionals dedicated to partnering with public- and private-sector clients to build and sustain…” Source: RevenueBase Database · checked Sep 19, 2026
8	Verdical Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Established in 2012, Verdical Group has developed a nationally known brand and industry leading reputation as a sustainability consulting firm focused on decarbonizing the built…” Source: RevenueBase Database · checked Sep 19, 2026
9	Estolano Advisors	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Estolano Advisors is an award-winning urban planning and public policy firm.” Source: RevenueBase Database · checked Sep 19, 2026
10	Impact Sciences	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 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 19, 2026
11	Leading Edge	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	17 contacts →
	Strong evidence “Leading Edge is a California based sustainability consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
12	HKLA	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	13 contacts →
	Indirect evidence “Hongjoo Kim Landscape Architects (HKLA) is a full service landscape architecture practice based in Los Angeles, California.” Source: RevenueBase Database · checked Sep 19, 2026
13	City Design Studio	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “City.Design.Studio LLC is an urban design, architecture, and planning firm with a focus on the revitalization of existing communities and the creation of unique, vibrant and…” Source: RevenueBase Database · checked Sep 19, 2026
14	Ecomotion	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	10 contacts →
	Partial evidence “EcoMotion provides sustainability advising and consulting cities, counties, utilities, corporations, and campuses to help them achieve their energy and environmental goals.” Source: RevenueBase Database · checked Sep 19, 2026
15	ALL About Waste	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	9 contacts →
	Partial evidence “Over 21 Years of Expertise in Sustainability Solutions At All About Waste, we are an award-winning global leader in zero-waste and circular economy solutions.” Source: RevenueBase Database · checked Sep 19, 2026
16	JKA John Kaliski Architects	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “John Kaliski Architects, Inc.(JKA), founded in and based in Los Angeles, California, is an award-winning, full-service architecture and urban design certified Small Business…” Source: RevenueBase Database · checked Sep 19, 2026
17	Stir Architecture	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “Sustainable design, the regeneration of urban centers, the balance between public places and private space, the exploration of new technologies; we are fully engaged in…” Source: RevenueBase Database · checked Sep 19, 2026
18	Argento Graham	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Argento/Graham offers strategic and technical green building consulting services to all stakeholders involved in the development and operation of new and existing buildings.” Source: RevenueBase Database · checked Sep 19, 2026
19	Roto Architects	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “RoTo has envisioned, designed, and built a wide range of project types of varying type, scope, and complexity, locally, nationally, and internationally.” Source: RevenueBase Database · checked Sep 19, 2026
20	The Pinyon Group	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “Real Estate Investment \| Development \| Advisory \| Asset Management The Pinyon Group is a full-service real estate development and advisory firm that prioritizes social and…” Source: RevenueBase Database · checked Sep 19, 2026
21	NEW Theme	Partial evidence	Los Angeles, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “Expanding upon the premise of sustainability, NEW THEME architecture seeks to foster a dialogue between green ideas and their articulation in radical new forms.” Source: RevenueBase Database · checked Sep 19, 2026
22	SO DA Architects	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “In 2009 SO\|DA Architects was founded to enact a paradigm shift from the conventional business model into one that is more sustainable, collaborative, and bridges the gaps left…” Source: RevenueBase Database · checked Sep 19, 2026
23	Labeling Sustainability INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	5 contacts →
	Partial evidence “At Labeling Sustainability, we are dedicated to guiding manufacturers, their suppliers and their distributors through the intricate journey of environmental accountability.” Source: RevenueBase Database · checked Sep 19, 2026
24	Okapi Architecture INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “Okapi is passionate about bringing the design teams to the world of sustainability and energy efficiency by collaborating with public utility's fundings, such as Savings By Design.” Source: RevenueBase Database · checked Sep 19, 2026
25	Earthara	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “We work across sectors, partnering with clients ranging from startups and small businesses to Fortune companies.” Source: RevenueBase Database · checked Sep 19, 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: city sustainability 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 city sustainability consultants.
Partial evidence: Its own public description names part of city sustainability consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name city sustainability 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 68 city sustainability consultants based in Los Angeles, United States

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City sustainability consultants based in Los Angeles, United States at a glance

As of Sep 19, 2026

52.9%Verified-email coverage

20.2Average contacts per company

1-10Median size (employees)

258.8%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 68 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 city sustainability 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 “city sustainability 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 city sustainability 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 city sustainability 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, 727 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 19, 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.

City sustainability 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 city sustainability 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 city sustainability consultants are there based in Los Angeles, United States?

RevenueBase identified 68 city sustainability 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 city sustainability consultants?

New York leads with 176 headquartered companies, followed by Washington (100) and Chicago (77).

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 727 verified decision-maker contacts tracked across these 68 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 19, 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.