Company lists · Data refreshed November 2026

Top 19 Design engineering services based in Oakland, United States

Name: Design engineering services based in Oakland, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 46 companies tracked

RevenueBase identified 46 company matches for design engineering services associated with Oakland, United States as of November 2026 and tracks 1,261 professional contacts across them, including 662 with verified work emails. Across the United States, New York is the largest hub for this category (515 companies); Oakland has 46.

This list covers company matches for design engineering services associated with Oakland, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

46Companies

1,261Contacts tracked

662Verified emails

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The 19 largest design engineering services based in Oakland, United States

Ranked by team size

Top 19 of 46 company matches for design engineering services based in Oakland, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Terraphase Engineering INC	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	201-500	170 contacts →
	Exact match “Terraphase offers cost-effective solutions to complex environmental and engineering challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	21tech	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	11-50	74 contacts →
	Exact match “21Tech LLC is a consulting firm providing business and technology solutions to both private and public interests.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	VST Engineering INC	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	11-50	45 contacts →
	Exact match “VST Engineering Inc.(VST) is a Bay Area-based civil engineering firm breaking the mold of traditional infrastructure consulting.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	YEI Engineers, INC	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	11-50	31 contacts →
	Exact match “YEI Engineers, Inc.(YEI) has provided electrical, mechanical, fire and plumbing systems engineering services to both public and private sectors since 1975.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Acumen Building Enterprise, INC	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	11-50	27 contacts →
	Exact match “Acumen Transit is a fast-growing professional consulting services provider renowned for our experienced consultants with “can-do” attitudes and innovative solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	KPW Structural Engineers, Inc., A Salas O'brien Company	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	20 contacts →
	Exact match “KPW Structural Engineers, Inc, A Salas O'Brien Company, provides structural engineering services to architects, developers, building owners, general contractors, and government…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	FKA Architects	Exact match	Oakland, NJ, United StatesHQ recorded Nov 6, 2026	11-50	17 contacts →
	Exact match “Striving to encourage the best possible collaboration with our valued clients, FKA provides Architectural, Interior Design, Planning, and Facility Management Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Transit Systems Engineering	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	51-200	12 contacts →
	Exact match “Transit Systems Engineering, Inc.(TSE) provides professional engineering services from concept to final construction documents for all transit systems including signaling…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Think Circuits Engineers	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	10 contacts →
	Exact match “Think Circuits is a boutique consultancy and design services firm specializing in realizing proof-of-concepts for small startups.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Kenney And Associates	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	9 contacts →
	Exact match “Founded in 1987, Kenney and Associates is a provider of marketing and management consulting services to the design and construction industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Diablo Engineering Group	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	7 contacts →
	Exact match “Diablo Engineering Group is a Civil Engineering company that was founded as a California corporation in 2014 by Jennifer Harmon, PE and Garrett Gritz, PE.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Phillips WIN Architecture	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	11-50	6 contacts →
	Exact match “Phillips Win Architecture is an Architecture and Planning company located 3032 Magnolia Street, Oakland, California, United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Alter Engineers	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	6 contacts →
	Exact match “Alter Consulting Engineers is well-versed to tackle projects of a wide variety of scales and scopes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	AS Architecture, INC	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	6 contacts →
	Exact match “AS Architecture, Inc is a full service architecture firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Komorous-Towey Architects	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	4 contacts →
	Exact match “Komorous-Towey Architects is an architecture & planning firm based out of Oakland, California, United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	RPR Architects	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	3 contacts →
	Exact match “RPR Architects is an architecture & planning company based in Oakland, California” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Adbc Architecture	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	3 contacts →
	Exact match “At ADBC, we integrate architecture and structure from the start, bringing design and technical expertise together.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Pacific Design Architecture	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	3 contacts →
	Exact match “Pacific Design Architecture is a full service architectural and interior design firm providing professional services to a wide range of clients, including commercial, health care…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Ultra Architects INC	Exact match	Oakland, CA, United StatesHQ recorded Nov 6, 2026	1-10	3 contacts →
	Exact match “Ultra Architects is an architecture firm based in the San Francisco bay area.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “design engineering services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 19 of 46 design engineering services based in Oakland, United States

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Design engineering services based in Oakland, United States at a glance

As of Nov 6, 2026

52.5%Verified-email coverage

27.4Average contacts per company

1-10Median size (employees)

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

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 46 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Oakland, United States whose business descriptions match “design engineering services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 662 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Design engineering services by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “design engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many design engineering services are there based in Oakland, United States?

RevenueBase identified 46 company matches for design engineering services associated with Oakland, United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Terraphase Engineering INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most design engineering services?

New York leads the United States with 515 company records, followed by Houston (368) and Chicago (245). Oakland has 46.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 662 professional contacts with verified work emails tracked across these 46 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.