Company lists · Data refreshed September 2026

Top 25 Infrastructure planning consultants based in Washington, United States

Name: Infrastructure planning consultants 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 75 companies tracked

RevenueBase identified 75 infrastructure planning consultants headquartered in Washington, United States as of September 2026 and tracks 2,232 professional contacts across them, including 694 with verified work emails. Houston is the largest hub.

This list covers infrastructure planning consultants headquartered in Washington, 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 20, 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 20, 2026 86% judged on-target in blind review

75Companies

2,232Contacts tracked

694Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest infrastructure planning consultants based in Washington, United States

Ranked by team size

Top 25 of 75 infrastructure planning consultants based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure planning consultants: 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	Synergy Consulting, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	434 contacts →
	Indirect evidence “Synergy Consulting is Global Leader in Financial and Corporate Advisory.” Source: RevenueBase Database · checked Sep 20, 2026
2	RTKL	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1,001-5,000	351 contacts →
	Partial evidence “CRTKL has now joined Arcadis, a global leader in the delivery of sustainable design, engineering and consultancy solutions for natural and built assets.” Source: RevenueBase Database · checked Sep 20, 2026
3	Mckissack & Mckissack	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	175 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 20, 2026
4	Astris Finance, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	74 contacts →
	Partial evidence “Founded in Astris Finance, a Colliers company, is an independent financial advisory firm specialized in the Infrastructure and Energy (I&E) sectors with an exceptional track…” Source: RevenueBase Database · checked Sep 20, 2026
5	Delon Hampton & Associates, Chartered	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	72 contacts →
	Indirect evidence “Delon Hampton & Associates, Chartered (DHA), is a professional consulting engineering firm specializing in civil and structural engineering, as well as program and construction…” Source: RevenueBase Database · checked Sep 20, 2026
6	B360 Bizsolutions 360 INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	201-500	58 contacts →
	Indirect evidence “BizSolutions 360 Inc.” Source: RevenueBase Database · checked Sep 20, 2026
7	Hayat Brown LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	50 contacts →
	Partial evidence “Comprised of experienced, savvy professionals, Hayat Brown provides services in engineering and P3, real estate and infrastructure advisory.” Source: RevenueBase Database · checked Sep 20, 2026
8	Wiles Mensch	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	29 contacts →
	Indirect evidence “Wiles Mensch (WM) is a certified small business providing land development and design services for projects across all sectors worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
9	Prime Partners Engineering	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	27 contacts →
	Indirect evidence “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: RevenueBase Database · checked Sep 20, 2026
10	Falcon Capital Advisors	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	26 contacts →
	Indirect evidence “Falcon Capital Advisors is a Washington, D.C.” Source: RevenueBase Database · checked Sep 20, 2026
11	SZ PM Consultants, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
12	Northbridge	Indirect evidence	Washington, United StatesHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “At Northbridge, we provide our clients with the tools and expertise to help solve complex financial, policy, and environmental challenges.” Source: RevenueBase Database · checked Sep 20, 2026
13	Bfa, INC	Indirect evidence	Washington, MO, United StatesHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “BFA is a consulting civil engineering firm located in downtown Washington, Missouri.” Source: RevenueBase Database · checked Sep 20, 2026
14	Foxxstem	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	19 contacts →
	Partial evidence “FOXXSTEM is a professional engineering consulting firm that inspires and creates infrastructure that connects people to communities and communities to opportunities for better…” Source: RevenueBase Database · checked Sep 20, 2026
15	Interagency INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	19 contacts →
	Partial evidence “InterAgency provides preconstruction consulting for the Washington Metro Area’s most complex and challenging infrastructure projects.” Source: RevenueBase Database · checked Sep 20, 2026
16	PAN Services DC	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	17 contacts →
	Partial evidence “Pan Services is an International Full-Service Infrastructure Development and Management Advisory services firm offering Design, Engineering, Construction, Consulting and…” Source: RevenueBase Database · checked Sep 20, 2026
17	Bohler DC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “CBE LICENSE # L32354022026 Bohler DC provides land development consulting and technical design services to owners and developers across all residential, commercial, industrial…” Source: RevenueBase Database · checked Sep 20, 2026
18	CG LA Infrastructure	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	15 contacts →
	Partial evidence “CG/LA is the authority on infrastructure strategy and project development.” Source: RevenueBase Database · checked Sep 20, 2026
19	Sustainable Capital Advisors	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	14 contacts →
	Partial evidence “Sustainable Capital Advisors (SCA) is a strategy consulting and financial advisory firm focused on delivering innovative capital solutions for the sustainable infrastructure…” Source: RevenueBase Database · checked Sep 20, 2026
20	LEE And Associates, INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	12 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
21	Rebel North America	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	12 contacts →
	Indirect evidence “As one of the leading U.S.” Source: RevenueBase Database · checked Sep 20, 2026
22	Cardinal Infrastructure, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	10 contacts →
	Partial evidence “Cardinal Infrastructure, LLC is a bipartisan Washington-based federal advisory group with national reach, specializing in transportation, infrastructure, and economic development…” Source: RevenueBase Database · checked Sep 20, 2026
23	Global Connective Center, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
24	Weaver Advisory	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence “Weaver Advisory is a global consulting firm that has worked in over 20 countries helping organizations and governments to achieve the most ambitious projects.” Source: RevenueBase Database · checked Sep 20, 2026
25	DRM International, INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “DRM International, Inc,(DRM) is a leading DIsadvantaged Business Enterprise (DBE) professional engineering consulting firm offering engineering, architectural, planning…” Source: RevenueBase Database · checked Sep 20, 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: infrastructure planning consultants. 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 infrastructure planning consultants.
Partial evidence: Its own public description names part of infrastructure planning consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure planning consultants. 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 75 infrastructure planning consultants based in Washington, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 694 reachable decision-makers.

Free signup · no credit card

View the full list →

Infrastructure planning consultants based in Washington, United States at a glance

As of Sep 20, 2026

31.1%Verified-email coverage

29.8Average contacts per company

1-10Median size (employees)

188.0%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 75 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 infrastructure planning consultants, 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 “infrastructure planning consultants”. 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 infrastructure planning consultants), 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 infrastructure planning consultants, 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, 694 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 20, 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.

Infrastructure planning consultants 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 infrastructure planning consultants, 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 infrastructure planning consultants are there based in Washington, United States?

RevenueBase identified 75 infrastructure planning consultants headquartered in Washington, 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?

Synergy Consulting, INC, headquartered in Washington, tops this list with the largest team on record.

Which city has the most infrastructure planning consultants?

Houston leads with 141 headquartered companies, followed by New York (115) and Chicago (79).

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 694 verified decision-maker contacts tracked across these 75 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 75 infrastructure planning consultants based in Washington, United States. Start with a free account, no credit card.

Download this list →

Related lists

Infrastructure planning consultants by geography

Browse the directory

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.