Company lists · Data refreshed September 2026

Top 25 Environmental design firms based in Oakland, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 56 companies tracked

RevenueBase identified 56 environmental design firms headquartered in Oakland, United States as of September 2026 and tracks 555 professional contacts across them, including 336 with verified work emails. New York is the largest hub.

This list covers environmental design firms headquartered in Oakland, 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

56Companies

555Contacts tracked

336Verified emails

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The 25 largest environmental design firms based in Oakland, United States

Ranked by team size

Top 25 of 56 environmental design firms based in Oakland, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental 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	Terraphase Engineering INC	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	201-500	166 contacts →
	Partial evidence “Terraphase offers cost-effective solutions to complex environmental and engineering challenges.” Source: RevenueBase Database · checked Sep 19, 2026
2	Hkit Architects	Strong evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	11-50	63 contacts →
	Strong evidence “HKIT Architects is a Bay Area design firm in continuous practice for over 75 years, offering expertise in the design of projects that enrich our communities and the environment.” Source: RevenueBase Database · checked Sep 19, 2026
3	ACC Environmental Consultants	Strong evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	51-200	41 contacts →
	Strong evidence “Established in 1986, ACC Environmental Consultants, Inc.(ACC) is an employee-owned full service environmental consulting and design firm recognized for its excellent and reliable…” Source: RevenueBase Database · checked Sep 19, 2026
4	Studio T-Sq	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	11-50	34 contacts →
	Partial evidence “We are Studio T-Square - a team of architects, designers, and planners passionate about community building.” Source: RevenueBase Database · checked Sep 19, 2026
5	Urban Planning Partners, INC	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Urban Planning Partners is a policy and environmental planning firm that was established in 2009.” Source: RevenueBase Database · checked Sep 19, 2026
6	Dyett & Bhatia	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	11-50	17 contacts →
	Indirect evidence “Dyett & Bhatia is a leader in urban planning, renowned for its pioneering, creative, and award-winning projects.” Source: RevenueBase Database · checked Sep 19, 2026
7	Pgadesign Landscape Architects	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	11-50	15 contacts →
	Partial evidence “PGAdesign is an award-winning landscape architectural studio that creates enduring and vibrant environments within the public realm.” Source: RevenueBase Database · checked Sep 19, 2026
8	CEL Consulting	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “CEL Consulting is now Atlas.” Source: RevenueBase Database · checked Sep 19, 2026
9	Einwillerkuehl Landscape Architecture	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	13 contacts →
	Indirect evidence “We are a landscape architecture firm founded in 2012 by Liz Einwiller and Sarah Kuehl, located in Oakland, CA.” Source: RevenueBase Database · checked Sep 19, 2026
10	The Architects Office	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	13 contacts →
	Partial evidence “The Architect’s Office provides consulting, planning, design, and architectural solutions which align client scope, schedule and budget.” Source: RevenueBase Database · checked Sep 19, 2026
11	FKA Architects	Partial evidence	Oakland, NJ, United StatesHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “Striving to encourage the best possible collaboration with our valued clients, FKA provides Architectural, Interior Design, Planning, and Facility Management Services.” Source: RevenueBase Database · checked Sep 19, 2026
12	Baran Studio Architecture	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	11-50	11 contacts →
	Partial evidence “We develop adaptive architectural solutions that bridge all aspects of a design problem.” Source: RevenueBase Database · checked Sep 19, 2026
13	Terracare Landscaping	Indirect evidence	Oakland, NJ, United StatesHQ checked Sep 19, 2026	11-50	8 contacts →
	Indirect evidence “Landscaping is art, expertise and passion.” Source: RevenueBase Database · checked Sep 19, 2026
14	West Office	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Partial evidence “West Office is an established multi-disciplinary design firm whose primary focus is the design and development of interactive educational facilities and visitor centers.” Source: RevenueBase Database · checked Sep 19, 2026
15	LMB Interiors	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Creating a beautiful home is an invitation to living an authentic life.” Source: RevenueBase Database · checked Sep 19, 2026
16	Mariposa Gardening & Design Cooperative, INC	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	11-50	7 contacts →
	Partial evidence “We are a Bay Area landscape design and build company, dedicated to creating ecologically sound gardens that are beautiful and well-crafted.” Source: RevenueBase Database · checked Sep 19, 2026
17	Studio Becky Carter	Strong evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Strong evidence “Studio Becky Carter is an interior design firm dedicated to creating bespoke environments through curious, progressive, and compassionate creative services.” Source: RevenueBase Database · checked Sep 19, 2026
18	Lumenworks Lighting Design INC	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Partial evidence “Since 1980 Lumenworks design team has been providing sustainable award-winning lighting designs that operate flawlessly and provide for the multi-functional needs of offices…” Source: RevenueBase Database · checked Sep 19, 2026
19	Verner Architects	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “Verner Architects is a boutique architecture firm that specializes in custom residential and small-scale commercial projects.” Source: RevenueBase Database · checked Sep 19, 2026
20	Larson Shores Architects INC	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
21	Ecobuild Architects	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Oakland architecture firm offering residential/ multi-family and commercial/ retail interior design services with a special focus on sustainable high-performance building…” Source: RevenueBase Database · checked Sep 19, 2026
22	Calichi Design Group	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “CaliChi Design Group is a registered Emerging Small Business Enterprise (ESBE) multi-disciplinary civil engineering design firm formed by professionals that saw a need for high…” Source: RevenueBase Database · checked Sep 19, 2026
23	Zentner Planning And Ecology	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Zentner Planning and Ecology is a professional consulting firm specializing in wetlands, endangered species and other biological resources.” Source: RevenueBase Database · checked Sep 19, 2026
24	Cupples Keller Designs	Partial evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “Cupples \| Keller Designs provides value-added landscape architectural services, not only designing unique and appropriate outdoor spaces but nurturing successful, ongoing…” Source: RevenueBase Database · checked Sep 19, 2026
25	RPR Architects	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	1-10	3 contacts →
	Indirect evidence “RPR Architects is an architecture & planning company based in Oakland, California” 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: environmental 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 environmental design firms.
Partial evidence: Its own public description names part of environmental design firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental 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 56 environmental design firms based in Oakland, United States

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Environmental design firms based in Oakland, United States at a glance

As of Sep 19, 2026

60.5%Verified-email coverage

9.9Average contacts per company

1-10Median size (employees)

987.5%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Oakland, so it is reported there. Company counts and contact totals on this page are exact for Oakland, over 56 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 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 Oakland, United States whose own description of what they do matches “environmental 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 environmental 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 environmental design firms, and records with no verified work email. Companies headquartered outside Oakland 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, 336 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.

Environmental 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 environmental 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 environmental design firms are there based in Oakland, United States?

RevenueBase identified 56 environmental design firms headquartered in Oakland, 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?

Terraphase Engineering INC, headquartered in Oakland, tops this list with the largest team on record.

Which city has the most environmental design firms?

New York leads with 553 headquartered companies, followed by Los Angeles (272) and Chicago (205).

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 336 verified decision-maker contacts tracked across these 56 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.