Company lists · Data refreshed September 2026

Top 25 Civil engineering companies based in Washington, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 55 companies tracked

Find 55 civil engineering companies based in Washington, United States, with 1,181 business contacts and 503 email addresses, as of September 2026. The companies provide services for infrastructure, land development, transportation, water systems, and related construction projects. Houston is the single most-represented city among the companies listed.

Civil engineering companies plan, design, manage, and oversee infrastructure and land development projects, including transportation systems, utilities, water resources, and structural site work. This list covers companies that provide civil engineering, infrastructure planning, site development, surveying, project management, or related engineering services. Ranked by team size, largest first. Data current as of September 6, 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 6, 2026 86% judged on-target in blind review

55Companies

1,181Contacts tracked

503Verified emails

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The 25 largest civil engineering companies based in Washington, United States

Ranked by team size

Top 25 of 55 civil engineering companies based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to civil engineering companies: 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	Fort Myer Construction Corporation	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	501-1,000	213 contacts →
	“Fort Myer Construction Corporation is an award-winning, ENR-Ranked Top 400 Contractor in the Washington, DC metropolitan area, focusing on an array of infrastructure construction…” Source: company website · checked Sep 6, 2026
2	Mckissack & Mckissack	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	51-200	175 contacts →
	“McKissack & McKissack is a national architectural, engineering, program and construction management firm with 30 years of experience working with clients to envision and deliver…” Source: company website · checked Sep 6, 2026
3	Veracity Engineering	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	51-200	80 contacts →
	“Since 2001, Veracity Engineering has been successful in building, growing, and performing on a portfolio of technically challenging engineering and program management engagements…” Source: company website · checked Sep 6, 2026
4	Anchor Construction Corporation	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	201-500	77 contacts →
	“Anchor Construction Corporation is one of the Mid-Atlantic Region’s most respected and leading self-performing utility and infrastructure firms, delivering superior solutions for…” Source: company website · checked Sep 6, 2026
5	Delon Hampton & Associates, Chartered	Strong evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	51-200	72 contacts →
	“Delon Hampton & Associates, Chartered (DHA), is a professional consulting engineering firm specializing in civil and structural engineering, as well as program and construction…” Source: company website · checked Sep 6, 2026
6	B360 Bizsolutions 360 INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	201-500	58 contacts →
	“BizSolutions 360 Inc.” Source: company website · checked Sep 6, 2026
7	Hayat Brown LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	51-200	50 contacts →
	“Comprised of experienced, savvy professionals, Hayat Brown provides services in engineering and P3, real estate and infrastructure advisory.” Source: company website · checked Sep 6, 2026
8	Cube Root Corporation	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	51-200	34 contacts →
	“Cube Root Corporation is a professional services firm offering a range of services including design, program management, construction management, facilities management, and other…” Source: company website · checked Sep 6, 2026
9	FMC & Associates LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	11-50	32 contacts →
	“FMC & ASSOCIATES LLC is a civil engineering company based out of Washington, DC and provides specialty engineering consulting services, construction material testing and…” Source: company website · checked Sep 6, 2026
10	Prime Partners Engineering	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	11-50	27 contacts →
	“We strive to be an industry leader by offering clients superior expertise, cutting-edge solutions and forward-thinking design in all their projects-from the most basic to the most…” Source: company website · checked Sep 6, 2026
11	Amar Group, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	1-10	27 contacts →
	“AMAR Group, LLC is a full service architecture, civil engineering, facility assessement and Certified Third Party Inspection Company.” Source: company website · checked Sep 6, 2026
12	SZ PM Consultants, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	11-50	24 contacts →
	Source: company website · checked Sep 6, 2026
13	Alphatec PC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	11-50	22 contacts →
	“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.” Source: company website · checked Sep 6, 2026
14	Bfa, INC	Strong evidence	Washington, MO, United StatesHQ checked Sep 6, 2026	11-50	19 contacts →
	“BFA is a consulting civil engineering firm located in downtown Washington, Missouri.” Source: company website · checked Sep 6, 2026
15	Foxxstem	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	11-50	19 contacts →
	“FOXXSTEM is a professional engineering consulting firm that inspires and creates infrastructure that connects people to communities and communities to opportunities for better…” Source: company website · checked Sep 6, 2026
16	Interagency INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	11-50	19 contacts →
	“InterAgency provides preconstruction consulting for the Washington Metro Area’s most complex and challenging infrastructure projects.” Source: company website · checked Sep 6, 2026
17	Harshman CE Group, LLC	Strong evidence	Washington, PA, United StatesHQ checked Sep 6, 2026	11-50	19 contacts →
	“We are a full service Professional Engineering consulting firm providing civil site and infrastructure design, professional land surveying, facility design, and permitting support…” Source: company website · checked Sep 6, 2026
18	Waller Corporation	Indirect evidence	Washington, PA, United StatesHQ checked Sep 6, 2026	11-50	17 contacts →
	“Louis E.” Source: company website · checked Sep 6, 2026
19	PAN Services DC	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	1-10	17 contacts →
	“Pan Services is an International Full-Service Infrastructure Development and Management Advisory services firm offering Design, Engineering, Construction, Consulting and…” Source: company website · checked Sep 6, 2026
20	Protec Construction INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	11-50	13 contacts →
	“Protec Construction, Inc.” Source: company website · checked Sep 6, 2026
21	Field & Tung Structural Engineers Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	1-10	7 contacts →
	“Field & Tung Structural Engineers is an engineering team which solves structural challenges for clients.” Source: company website · checked Sep 6, 2026
22	DRM International, INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	1-10	7 contacts →
	“DRM International, Inc,(DRM) is a leading DIsadvantaged Business Enterprise (DBE) professional engineering consulting firm offering engineering, architectural, planning…” Source: company website · checked Sep 6, 2026
23	Allen-Norris Permitting And Inspections	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	1-10	7 contacts →
	“Allen-Norris Permitting and Inspections is a minority, woman-owned construction management firm uniquely positioned to provide architectural, engineering, compliance, permitting…” Source: company website · checked Sep 6, 2026
24	Huska & Horgan Engineering	Strong evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	1-10	6 contacts →
	“Founded in 2016, Huska & Horgan Engineering, formerly Huska Consulting, is a top-notch civil engineering firm serving the greater Washington, D.C.” Source: company website · checked Sep 6, 2026
25	Grotheer & CO	Partial evidence	Washington, DC, United StatesHQ checked Sep 6, 2026	11-50	5 contacts →
	“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…” Source: company website · checked Sep 6, 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: civil engineering companies. 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 civil engineering companies.
Partial evidence: Its own public description names part of civil engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name civil engineering companies. 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 55 civil engineering companies based in Washington, United States

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Civil engineering companies based in Washington, United States at a glance

As of Sep 6, 2026

42.6%Verified-email coverage

21.5Average contacts per company

11-50Median size (employees)

401.8%Largest-city concentration · Houston

Sep 6, 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 this city, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 55 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 civil engineering companies, 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 Washington, United States whose own description of what they do matches “civil engineering companies”. 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 civil engineering companies), 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 civil engineering companies, and records with no verified work email. Companies headquartered outside Washington 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, 503 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 6, 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.

Civil engineering companies by metro in the United States

Frequently asked

What do civil engineering companies do?

Civil engineering companies plan, design, and oversee infrastructure and land development projects, including roads, bridges, utilities, water systems, and site work.

How many civil engineering companies are based in Washington, United States?

The list contains 55 civil engineering companies based in Washington, United States.

Which city has the most civil engineering companies?

Houston is the single most-represented city among the companies on this list.

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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.