Company lists · Data refreshed September 2026

Top 25 Engineering consultancies based in Tulsa, United States

Name: Engineering consultancies based in Tulsa, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 48 companies tracked

RevenueBase identified 48 engineering consultancies headquartered in Tulsa, United States as of September 2026 and tracks 2,173 professional contacts across them, including 884 with verified work emails. Houston is the largest hub.

This list covers engineering consultancies headquartered in Tulsa, 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 24, 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 24, 2026 86% judged on-target in blind review

48Companies

2,173Contacts tracked

884Verified emails

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The 25 largest engineering consultancies based in Tulsa, United States

Ranked by team size

Top 25 of 48 engineering consultancies based in Tulsa, United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to engineering consultancies: 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	Matrix Service Company	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	1,001-5,000	785 contacts →
	Partial evidence “Matrix Service Company (Nasdaq: MTRX) is a leading specialty engineering and construction company whose commitment to safety, quality, and integrity has earned its subsidiaries a…” Source: RevenueBase Database · checked Sep 24, 2026
2	Wallace Design Collective	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	201-500	289 contacts →
	Indirect evidence “fantastic people.” Source: RevenueBase Database · checked Sep 24, 2026
3	Cyntergy	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	51-200	168 contacts →
	Partial evidence “Cyntergy is a full service, award winning Architecture, Engineering and Construction Administration firm based in Tulsa and is licensed in Architecture and Engineering in every…” Source: RevenueBase Database · checked Sep 24, 2026
4	B T Group	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	201-500	146 contacts →
	Indirect evidence “B+T Group is a turnkey professional services firm specializing in the infrastructure industry - wireless, fiber, broadband, oil and gas, utilities to name a few.” Source: RevenueBase Database · checked Sep 24, 2026
5	Select Engineering INC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	51-200	95 contacts →
	Partial evidence “Select Engineering, Inc, is a privately-held company with offices in Tulsa,OK and Houston,TX.” Source: RevenueBase Database · checked Sep 24, 2026
6	MPW Engineering, LLC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	51-200	86 contacts →
	Partial evidence “We at MPW Engineering have used our full depth of multi-disciplinary expertise to create solutions for clients, big and small, across the United States.” Source: RevenueBase Database · checked Sep 24, 2026
7	Esdc INC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	56 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
8	DDSI	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	51-200	51 contacts →
	Indirect evidence “Downtown Design Services Inc, began operations as an Oklahoma corporation in for the purpose of providing the following Services to the Oil and Gas, Fiber Optic, Energy…” Source: RevenueBase Database · checked Sep 24, 2026
9	GUY Engineering Services, INC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	37 contacts →
	Partial evidence “Guy Engineering Services, Inc.(GUY) is a woman-owned, Native American-owned, and HUBZone-certified civil engineering consulting firm to various city, county, state, and federal…” Source: RevenueBase Database · checked Sep 24, 2026
10	BIG ELK Energy Systems, LLC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	51-200	33 contacts →
	Indirect evidence “Big Elk Energy Systems LLC was founded to bring the best possible talent and service to the energy industry.” Source: RevenueBase Database · checked Sep 24, 2026
11	360 Engineering Group, Pllc	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	31 contacts →
	Partial evidence “360 Engineering Group provides comprehensive structural engineering solutions for a wide variety of clients and projects.” Source: RevenueBase Database · checked Sep 24, 2026
12	BKL Architects Engineers	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	27 contacts →
	Indirect evidence “Founded in Tulsa in 1946, BKL is a versatile firm with a rich history of collaborating on public projects across Oklahoma's counties and municipalities.” Source: RevenueBase Database · checked Sep 24, 2026
13	Allied Engineering Group, LLC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	24 contacts →
	Partial evidence “Allied Engineering Group, LLC is a multi-discipline professional services firm located in Tulsa, OK.” Source: RevenueBase Database · checked Sep 24, 2026
14	Purpose Engineering, LLC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	22 contacts →
	Partial evidence “Purpose Engineering is a multi-disciplinary engineering services firm focused on industrial facilities.” Source: RevenueBase Database · checked Sep 24, 2026
15	Pepm Group	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	22 contacts →
	Partial evidence “The PEPM Group is an engineering, drafting, 3D modeling, and project management company headquartered in Tulsa, OK, with a branch office in Fayetteville, AR.” Source: RevenueBase Database · checked Sep 24, 2026
16	J. D. Hair & Associates, INC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	21 contacts →
	Indirect evidence “J.” Source: RevenueBase Database · checked Sep 24, 2026
17	Tanner Consulting, LLC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	19 contacts →
	Indirect evidence “Tanner Consulting advances the frontiers of development by offering a unique blend of services to large scale developers, municipalities, and investment groups, reducing the need…” Source: RevenueBase Database · checked Sep 24, 2026
18	Aimright	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	19 contacts →
	Indirect evidence “Below our feet is dirt, rocks, water, minerals, and a host of organisms that impact the design and construction industry.” Source: RevenueBase Database · checked Sep 24, 2026
19	EDA FKI Engineering PC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	16 contacts →
	Partial evidence “EDA+FKI Engineers has provided comprehensive mechanical, electrical and plumbing engineering services throughout Oklahoma and the surrounding regions since 1954.” Source: RevenueBase Database · checked Sep 24, 2026
20	Meshek & Associates	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	1,001-5,000	13 contacts →
	Indirect evidence “In 2024, Meshek joined WSB, a design and consulting firm.” Source: RevenueBase Database · checked Sep 24, 2026
21	Gfac Engineering	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	13 contacts →
	Partial evidence “The MISSION of GFAC Engineering is to elevate the industry and to be your TRUSTED ADVISOR in the areas of Geotechnical Engineering and Construction Material Testing.” Source: RevenueBase Database · checked Sep 24, 2026
22	CJC Architects, INC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	1-10	12 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 2026
23	Resolute Engineering, LLC	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	9 contacts →
	Partial evidence “Resolute Engineering provides a full complement of services across the energy industry.” Source: RevenueBase Database · checked Sep 24, 2026
24	Asher Power	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	11-50	9 contacts →
	Partial evidence “Electrical infrastructure projects don’t fail because of engineering.” Source: RevenueBase Database · checked Sep 24, 2026
25	KKT Architects, INC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 24, 2026	51-200	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 24, 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: engineering consultancies. 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 engineering consultancies.
Partial evidence: Its own public description names part of engineering consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering consultancies. 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 48 engineering consultancies based in Tulsa, United States

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Engineering consultancies based in Tulsa, United States at a glance

As of Sep 24, 2026

40.7%Verified-email coverage

45.3Average contacts per company

11-50Median size (employees)

1295.8%Largest-city concentration · Houston

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Tulsa, so it is reported there. Company counts and contact totals on this page are exact for Tulsa, over 48 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 engineering consultancies, 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 Tulsa, United States whose own description of what they do matches “engineering consultancies”. 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 engineering consultancies), 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 engineering consultancies, and records with no verified work email. Companies headquartered outside Tulsa 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, 884 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 24, 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.

Engineering consultancies 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 engineering consultancies, 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 engineering consultancies are there based in Tulsa, United States?

RevenueBase identified 48 engineering consultancies headquartered in Tulsa, 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?

Matrix Service Company, headquartered in Tulsa, tops this list with the largest team on record.

Which city has the most engineering consultancies?

Houston leads with 622 headquartered companies, followed by New York (449) and Austin (208).

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 884 verified decision-maker contacts tracked across these 48 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 24, 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.