Company lists · Data refreshed September 2026

Top 25 Urban design firms based in Los Angeles, United States

Name: Urban design 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 22, 2026 115 companies tracked

RevenueBase identified 115 urban design firms headquartered in Los Angeles, United States as of September 2026 and tracks 2,708 professional contacts across them, including 1,179 with verified work emails. New York is the largest hub.

This list covers urban design 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 22, 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 22, 2026 86% judged on-target in blind review

115Companies

2,708Contacts tracked

1,179Verified emails

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The 25 largest urban design firms based in Los Angeles, United States

Ranked by team size

Top 25 of 115 urban design firms based in Los Angeles, United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to urban design 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 22, 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 22, 2026
2	RIOS	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	201-500	300 contacts →
	Partial evidence “RIOS is a global design collective working to create destinations that spark wonder.” Source: RevenueBase Database · checked Sep 22, 2026
3	AC Martin	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	51-200	153 contacts →
	Partial evidence “AC Martin is a California-based architecture, planning, interior architecture and research firm that uses an integrated design approach to create enduring environments for the…” Source: RevenueBase Database · checked Sep 22, 2026
4	Marmol Radziner	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	51-200	144 contacts →
	Partial evidence “Established in 1989, Marmol Radziner is an award-winning Los Angeles-based design-build architecture and construction firm that integrates architectural design with a full range…” Source: RevenueBase Database · checked Sep 22, 2026
5	JERDE	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	51-200	104 contacts →
	Strong 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 22, 2026
6	Lehrer Architects	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	96 contacts →
	Indirect evidence “Michael B.” Source: RevenueBase Database · checked Sep 22, 2026
7	Nadel Architects	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 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 22, 2026
8	Gruen Associates	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 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 22, 2026
9	Studio-Mla	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	68 contacts →
	Strong evidence “Studio-MLA is a design studio that integrates landscape architecture, urban design, and planning to create places that inspire human connection, unite communities, and restore…” Source: RevenueBase Database · checked Sep 22, 2026
10	JGM	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	51-200	47 contacts →
	Partial 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 22, 2026
11	TNI Group	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	27 contacts →
	Partial evidence “The Next Idea Group is a Los Angeles based established professional design and architecture company with 22 years of experience and a proven track record.” Source: RevenueBase Database · checked Sep 22, 2026
12	Omgivning Architecture Interiors	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	25 contacts →
	Partial evidence “At Omgivning, we breathe new life into urban spaces.” Source: RevenueBase Database · checked Sep 22, 2026
13	Salt Landscape Architects	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	21 contacts →
	Partial evidence “SALT Landscape Architects is a Los Angeles-based design studio that creates enduring, engaging, and innovative landscapes at a range of scales.” Source: RevenueBase Database · checked Sep 22, 2026
14	RELM	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect evidence “Realms play a consequential role in city life.” Source: RevenueBase Database · checked Sep 22, 2026
15	SRK Architects, INC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	17 contacts →
	Partial evidence “Mission: Our single professional purpose is to deliver design excellence, every day for every project, sourced through strong, collaborative relationships with our clients.” Source: RevenueBase Database · checked Sep 22, 2026
16	Ottinger Architects	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	15 contacts →
	Strong evidence “We design unique and livable places that respond to the changing needs of denser and more urban cities.” Source: RevenueBase Database · checked Sep 22, 2026
17	Here LA	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	15 contacts →
	Partial evidence “Here LA is an interdisciplinary design practice that improves the public realm.” Source: RevenueBase Database · checked Sep 22, 2026
18	QDG Architecture	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “QDG Architecture is a Los Angeles based firm offering a full range of architectural and planning services.” Source: RevenueBase Database · checked Sep 22, 2026
19	Breland-Harper	Partial evidence	Los Angeles, United StatesHQ checked Sep 22, 2026	11-50	14 contacts →
	Partial evidence “Founded by Michael Breland Breland – Harper is a Los Angeles-based design firm that provides interdisciplinary services across residential, commercial, mixed-use, and hospitality…” Source: RevenueBase Database · checked Sep 22, 2026
20	HKLA	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 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 22, 2026
21	Large Architecture	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	13 contacts →
	Partial evidence “With a focus on creativity, environmentally sensitive design, proactive project management and sound technical skills, LARGE architecture (LRG) delivers unique design solutions…” Source: RevenueBase Database · checked Sep 22, 2026
22	Johnston Marklee	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	11-50	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 22, 2026
23	City Design Studio	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 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 22, 2026
24	Newman Garrison Partners	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	51-200	11 contacts →
	Strong evidence “Newman Garrison + Partners (NG+P) is a Los Angeles-area based full service architecture, urban planning, and interior design studio that has demonstrated its commitment to design…” Source: RevenueBase Database · checked Sep 22, 2026
25	Swift LEE Office	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 22, 2026	1-10	11 contacts →
	Partial evidence “Swift Lee Office (SLO) is a Los Angeles-based, multidisciplinary design collaborative.” Source: RevenueBase Database · checked Sep 22, 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: urban design 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 urban design firms.
Partial evidence: Its own public description names part of urban design firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name urban design 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 115 urban design firms based in Los Angeles, United States

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Urban design firms based in Los Angeles, United States at a glance

As of Sep 22, 2026

43.5%Verified-email coverage

23.5Average contacts per company

1-10Median size (employees)

243.5%Largest-city concentration · New York

Sep 22, 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 115 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 urban design 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 “urban design 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 urban design 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 urban design 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, 1,179 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 22, 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.

Urban design 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 urban design 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 urban design firms are there based in Los Angeles, United States?

RevenueBase identified 115 urban design 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 urban design firms?

New York leads with 280 headquartered companies, followed by Los Angeles (115) and Seattle (103).

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 1,179 verified decision-maker contacts tracked across these 115 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 22, 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.