Company lists · Data refreshed November 2026

Top 23 Mechanical engineering contractors based in Washington, United States

Name: Mechanical engineering contractors based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 67 companies tracked

RevenueBase identified 67 company matches for mechanical engineering contractors associated with Washington, United States as of November 2026 and tracks 1,440 professional contacts across them, including 628 with verified work emails. Across the United States, Houston is the largest hub for this category (416 companies); Washington has 67.

This list covers company matches for mechanical engineering contractors associated with Washington, 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

67Companies

1,440Contacts tracked

628Verified emails

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The 23 largest mechanical engineering contractors based in Washington, United States

Ranked by team size

Top 23 of 67 company matches for mechanical engineering contractors based in Washington, 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	Axiem International	Exact match	Washington, MI, United StatesHQ recorded Nov 6, 2026	201-500	137 contacts →
	Exact match “For more than 18 years, Axiem International has provided the highest quality Engineering deliverables and professionals to the Energy, Aerospace, Automotive & Industrial…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Setty & Associates	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	201-500	136 contacts →
	Exact match “Established in 1984, SETTY is headquartered in Fairfax, VA, with offices in Atlanta, GA, Baltimore, MD, Charlottesville, VA, Fairfax, VA, Los Angeles, CA, New York, NY…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Veracity Engineering	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	51-200	90 contacts →
	Exact match “Since 2001, Veracity Engineering has been successful in building, growing, and performing on a portfolio of technically challenging engineering and program management engagements…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Engenium Group	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	11-50	48 contacts →
	Exact match “Engenium Group is a boutique MEP and Technology design firm comprised of innovative engineers who develop superior solutions for our clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Global Engineering Solutions	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	11-50	45 contacts →
	Exact match “Global Engineering Solutions is an Engineering, Program Management and Construction Management firm specializing in Mechanical, Electrical, Plumbing and Fire Protection…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Cube Root Corporation	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	51-200	38 contacts →
	Exact match “Cube Root Corporation is a professional services firm offering a range of services including design, program management, construction management, facilities management, and other…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Amar Group, LLC	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	1-10	28 contacts →
	Exact match “AMAR Group, LLC is a full service architecture, civil engineering, facility assessement and Certified Third Party Inspection Company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Phaedrus Engineering	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	1-10	24 contacts →
	Exact match “Phaedrus is a small engineering company located in the DC Metro Area, serving the DoD, academia, and private sector with professional skills for design, architecture, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	North Arrow, INC	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	11-50	23 contacts →
	Exact match “DUNS Number: 08-001-8268 CAGE Code: 7GN69 SBA Certified Small Business District of Columbia Certified Business Enterprise (CBE) Metropolitan Washington Airports Authority Local…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Alphatec PC	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	11-50	22 contacts →
	Exact match “Alphatec PC is a full service A/E firm located in Dupont Circle and has been providing design and consulting services for over 50 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	PAN Services DC	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	1-10	19 contacts →
	Exact match “Pan Services is an International Full-Service Infrastructure Development and Management Advisory services firm offering Design, Engineering, Construction, Consulting and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Waller Corporation	Exact match	Washington, PA, United StatesHQ recorded Nov 6, 2026	11-50	18 contacts →
	Exact match “Louis E.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Protec Construction INC	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	11-50	15 contacts →
	Exact match “Protec Construction, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	HEP Construction	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	11-50	12 contacts →
	Exact match “Founded in 1997, HEP Construction is headquartered in Washington, DC, and exclusively focuses on commercial construction projects with and has substantial past performance with…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	OAK Ridge Industries	Exact match	Washington, NC, United StatesHQ recorded Nov 6, 2026	51-200	9 contacts →
	Exact match “Oak Ridge is your turn key solution for engineering projects, millwright work, facilities services, automated lines, reverse engineering and any type of metal fabrication.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Innovation Mechanical, INC	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	11-50	9 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Field & Tung Structural Engineers Pllc	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	1-10	8 contacts →
	Exact match “Field & Tung Structural Engineers is an engineering team which solves structural challenges for clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Allen-Norris Permitting And Inspections	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	1-10	7 contacts →
	Exact match “Allen-Norris Permitting and Inspections is a minority, woman-owned construction management firm uniquely positioned to provide architectural, engineering, compliance, permitting…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Grotheer & CO	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	11-50	5 contacts →
	Exact match “GROTHEER & CO, a small business located in Washington, DC, has been practicing professional engineering since 1954, and has completed thousands of projects for local and federal…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Washington Engineering & Architecture, INC	Exact match	Washington, MO, United StatesHQ recorded Nov 6, 2026	1-10	3 contacts →
	Exact match “WEA is a fully staffed, full-service engineering firm also offering architecture and interior design services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	The Impact Group, LLC	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	1-10	3 contacts →
	Exact match “The Impact Group, LLC supports the mission and strategic goals of our customers in Engineering, Construction, and Information Technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Allied Companies	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	11-50	3 contacts →
	Exact match “Professional services firm providing civil and environmental engineering as well as Program Management & Construction Management to government and private clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	FREJA	Exact match	Washington, DC, United StatesHQ recorded Nov 6, 2026	1-10	3 contacts →
	Exact match “FREJA (fray \| ah) is a provider of consulting and project management services for clients with unique mission sets in the areas of construction, defense, and aerospace.” 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 “mechanical engineering contractors”. 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 23 of 67 mechanical engineering contractors based in Washington, United States

See the full list, filter by size, metro and specialty, and access 628 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Mechanical engineering contractors based in Washington, United States at a glance

As of Nov 6, 2026

43.6%Verified-email coverage

21.5Average contacts per company

11-50Median size (employees)

Nov 6, 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 Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 67 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 Washington, United States whose business descriptions match “mechanical engineering contractors” 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 628 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.

Mechanical engineering contractors 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 “mechanical engineering contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many mechanical engineering contractors are there based in Washington, United States?

RevenueBase identified 67 company matches for mechanical engineering contractors associated with Washington, 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?

Axiem International 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 mechanical engineering contractors?

Houston leads the United States with 416 company records, followed by New York (306) and Chicago (147). Washington has 67.

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 628 professional contacts with verified work emails tracked across these 67 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.