Company lists · Data refreshed September 2026

Top 25 Infrastructure design firms based in Washington, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 52 companies tracked

RevenueBase identified 52 company matches for infrastructure design firms associated with Washington, United States as of September 2026 and tracks 2,515 professional contacts across them, including 843 with verified work emails. Across the United States, Houston is the largest hub for this category (156 companies); Washington has 52.

This list covers company matches for infrastructure design firms 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 September 20, 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 Sep 20, 2026 How this list was built

52Companies

2,515Contacts tracked

843Verified emails

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The 25 largest infrastructure design firms based in Washington, United States

Ranked by team size

Top 25 of 52 company matches for infrastructure design firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	PAGE	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,191 contacts →
	Exact match “Performance by Design.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Synergy Consulting, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	434 contacts →
	Exact match “Synergy Consulting is Global Leader in Financial and Corporate Advisory.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Mckissack & Mckissack	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	175 contacts →
	Exact match “McKissack & McKissack is a national architectural, engineering, program and construction management firm with 30 years of experience working with clients to envision and deliver…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Shalom Baranes Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	84 contacts →
	Exact match “Shalom Baranes Associates (SBA) is a Washington, DC architectural firm with an acclaimed reputation for its expertise in residential, commercial, institutional, and governmental…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Anchor Construction Corporation	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	201-500	77 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Delon Hampton & Associates, Chartered	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	72 contacts →
	Exact match “Delon Hampton & Associates, Chartered (DHA), is a professional consulting engineering firm specializing in civil and structural engineering, as well as program and construction…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Hayat Brown LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	50 contacts →
	Exact match “Comprised of experienced, savvy professionals, Hayat Brown provides services in engineering and P3, real estate and infrastructure advisory.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Cube Root Corporation	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	34 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 · Sep 20, 2026 · View company records in RevenueBase
9	Wiles Mensch	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	29 contacts →
	Exact match “Wiles Mensch (WM) is a certified small business providing land development and design services for projects across all sectors worldwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Prime Partners Engineering	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	27 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	SZ PM Consultants, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	24 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Alphatec PC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 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 · Sep 20, 2026 · View company records in RevenueBase
13	Bfa, INC	Exact match	Washington, MO, United StatesHQ recorded Sep 20, 2026	11-50	19 contacts →
	Exact match “BFA is a consulting civil engineering firm located in downtown Washington, Missouri.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Foxxstem	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	19 contacts →
	Exact match “FOXXSTEM is a professional engineering consulting firm that inspires and creates infrastructure that connects people to communities and communities to opportunities for better…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Interagency INC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	19 contacts →
	Exact match “InterAgency provides preconstruction consulting for the Washington Metro Area’s most complex and challenging infrastructure projects.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Harshman CE Group, LLC	Exact match	Washington, PA, United StatesHQ recorded Sep 20, 2026	11-50	19 contacts →
	Exact match “We are a full service Professional Engineering consulting firm providing civil site and infrastructure design, professional land surveying, facility design, and permitting support…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	KGP Design Studio, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	17 contacts →
	Exact match “KGP design studio is a diverse, international and multidisciplinary design firm with expertise in architecture, urban design and transit.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	PAN Services DC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	17 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 · Sep 20, 2026 · View company records in RevenueBase
19	Bradley Site Design, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	16 contacts →
	Exact match “Located in Washington, DC, Bradley Site Design is a dynamic Landscape Architecture, Civil Engineering and Planning firm founded in 1994 and dedicated to the creation of socially…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	CG LA Infrastructure	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	15 contacts →
	Exact match “CG/LA is the authority on infrastructure strategy and project development.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	LEE And Associates, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	12 contacts →
	Exact match “lee and associates, inc (lai) is a respected and highly responsive firm offering planning and design professional services as it relates to how man relates to the land and the…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Rebel North America	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	12 contacts →
	Exact match “As one of the leading U.S.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	DRM International, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	7 contacts →
	Exact match “DRM International, Inc,(DRM) is a leading DIsadvantaged Business Enterprise (DBE) professional engineering consulting firm offering engineering, architectural, planning…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Symmetra Design	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	6 contacts →
	Exact match “SYMMETRA DESIGN is a transportation planning and traffic engineering consulting firm that specializes in urban environments.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Grotheer & CO	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 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 · Sep 20, 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 “infrastructure design firms”. 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 25 of 52 infrastructure design firms based in Washington, United States

See the full list, filter by size, metro and specialty, and access 843 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Infrastructure design firms based in Washington, United States at a glance

As of Sep 20, 2026

33.5%Verified-email coverage

48.4Average contacts per company

11-50Median size (employees)

Sep 20, 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 Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 52 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 “infrastructure design firms” 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 843 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 September 20, 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.

Infrastructure design firms 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 “infrastructure design firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many infrastructure design firms are there based in Washington, United States?

RevenueBase identified 52 company matches for infrastructure design firms associated with Washington, United States as of September 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?

PAGE 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 infrastructure design firms?

Houston leads the United States with 156 company records, followed by New York (141) and Chicago (89). Washington has 52.

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 843 professional contacts with verified work emails tracked across these 52 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 September 20, 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.