Company lists · Data refreshed September 2026

Top 25 City planning advisory firms based in Los Angeles, United States

Name: City planning advisory firms 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 73 companies tracked

RevenueBase identified 73 city planning advisory firms headquartered in Los Angeles, United States as of September 2026 and tracks 1,863 professional contacts across them, including 756 with verified work emails. New York is the largest hub.

This list covers city planning advisory firms 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

73Companies

1,863Contacts tracked

756Verified emails

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The 25 largest city planning advisory firms based in Los Angeles, United States

Ranked by team size

Top 25 of 73 city planning advisory firms 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 planning advisory 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	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	JERDE	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	51-200	104 contacts →
	Indirect evidence “JERDE is a global group of innovative pioneers, architects, landscapers, urban planners, and strategists with a collective commitment to design beyond the ordinary.” Source: RevenueBase Database · checked Sep 19, 2026
3	Lehrer Architects	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	96 contacts →
	Indirect evidence “Michael B.” Source: RevenueBase Database · checked Sep 19, 2026
4	Nadel Architects	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	51-200	75 contacts →
	Partial 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
5	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
6	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
7	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
8	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
9	Estolano Advisors	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	27 contacts →
	Strong evidence “Estolano Advisors is an award-winning urban planning and public policy firm.” Source: RevenueBase Database · checked Sep 19, 2026
10	V&a, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
11	The Code Solution	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “The Code Solution is a multi-disciplinary professional firm located in Los Angeles that is committed to providing a multitude of services for each phase of real estate development.” Source: RevenueBase Database · checked Sep 19, 2026
12	C2pm	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 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 19, 2026
13	Johnston Marklee	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Johnston Marklee & Assoc is an Architecture and Planning company located in Los Angeles, California, United States.” Source: RevenueBase Database · checked Sep 19, 2026
14	City Design Studio	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	12 contacts →
	Strong 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
15	Trifiletti Consulting	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Our team’s services include project management, strategic advisory services, land use and environmental clearance management, and public/private real estate transactional support.” Source: RevenueBase Database · checked Sep 19, 2026
16	D R Consultants & Designers, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 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 19, 2026
17	ULI LOS Angeles	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	501-1,000	10 contacts →
	Indirect evidence “Established in 1936, ULI is a 501(c)(3) nonprofit research and education organization supported by over members across the globe and 1,600 here in the Greater Los Angeles area.” Source: RevenueBase Database · checked Sep 19, 2026
18	DK Engineer, Corp	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 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 19, 2026
19	Gmpa Architects	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	8 contacts →
	Partial evidence “GMPA Architects is an award-winning design firm providing architectural and planning services throughout California.” Source: RevenueBase Database · checked Sep 19, 2026
20	Tierra West Advisors	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “At Tierra West, we specialize in community-centered and strategic problem solving.” Source: RevenueBase Database · checked Sep 19, 2026
21	Archimorphic	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “Archimorphic is a boutique architectural firm located in Downtown Los Angeles.” Source: RevenueBase Database · checked Sep 19, 2026
22	Barrio Planners Incorporated	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	7 contacts →
	Partial evidence “We are a multidisciplinary firm engaged in the practice of architecture, landscape architecture, planning, programming, and urban design.” Source: RevenueBase Database · checked Sep 19, 2026
23	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
24	R204 Design	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	6 contacts →
	Partial evidence “R204 DESIGN is a global planning and architecture firm based in Los Angeles.” Source: RevenueBase Database · checked Sep 19, 2026
25	Mark H. Savel Architects, INC	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence 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 planning advisory 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 city planning advisory firms.
Partial evidence: Its own public description names part of city planning advisory firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name city planning advisory 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 73 city planning advisory firms based in Los Angeles, United States

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City planning advisory firms based in Los Angeles, United States at a glance

As of Sep 19, 2026

40.6%Verified-email coverage

25.5Average contacts per company

1-10Median size (employees)

232.9%Largest-city concentration · New York

Sep 19, 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 73 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 planning advisory 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 Los Angeles, United States whose own description of what they do matches “city planning advisory 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 city planning advisory 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 city planning advisory firms, 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, 756 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 planning advisory 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 city planning advisory 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 city planning advisory firms are there based in Los Angeles, United States?

RevenueBase identified 73 city planning advisory firms 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 planning advisory firms?

New York leads with 170 headquartered companies, followed by Houston (114) and Chicago (76).

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 756 verified decision-maker contacts tracked across these 73 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.