Company lists · Data refreshed September 2026

Top 25 Infrastructure fund law firms based in Washington, United States

Name: Infrastructure fund law 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 28, 2026 41 companies tracked

RevenueBase identified 41 infrastructure fund law firms headquartered in Washington, United States as of September 2026 and tracks 12,585 professional contacts across them, including 7,677 with verified work emails. Across the United States, New York is the largest hub for this category (115 companies); Washington follows with 41.

This list covers infrastructure fund law firms 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 28, 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 28, 2026 86% judged on-target in blind review

41Companies

12,585Contacts tracked

7,677Verified emails

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The 25 largest infrastructure fund law firms based in Washington, United States

Ranked by team size

Top 25 of 41 infrastructure fund law firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure fund law firms: 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	Arnold & Porter	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,333 contacts →
	Indirect evidence “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: RevenueBase Database · checked Sep 28, 2026
2	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,790 contacts →
	Partial evidence “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Source: RevenueBase Database · checked Sep 28, 2026
3	Wiley Rein LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	576 contacts →
	Indirect evidence “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Source: RevenueBase Database · checked Sep 28, 2026
4	Synergy Consulting, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	434 contacts →
	Indirect evidence “Synergy Consulting is Global Leader in Financial and Corporate Advisory.” Source: RevenueBase Database · checked Sep 28, 2026
5	VAN Ness Feldman LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	174 contacts →
	Partial evidence “Van Ness Feldman is a nationally recognized mid-sized law firm specializing in the areas of energy, environment, and natural resources law and policy, with offices in Washington…” Source: RevenueBase Database · checked Sep 28, 2026
6	Astris Finance, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 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 28, 2026
7	Tiber Hudson LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	36 contacts →
	Partial evidence “Tiber Hudson LLC is a boutique law firm focused in providing legal services including complex commercial litigation, complex commercial transactions, corporate structure and…” Source: RevenueBase Database · checked Sep 28, 2026
8	Duncan, Weinberg, Genzer & Pembroke, P.C. Dwgp	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Indirect evidence “Since its founding in 1971, DWG & P, has provided a broad range of counseling, regulatory, litigation and legislative services to clients in every region of the country.” Source: RevenueBase Database · checked Sep 28, 2026
9	E&w LAW	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “At Earth & Water, we are more than lawyers – we’re strategic advisors with unique experience who advance our clients’ interests across a broad range of environmental and business…” Source: RevenueBase Database · checked Sep 28, 2026
10	Harkins Cunningham LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	18 contacts →
	Partial evidence “Harkins Cunningham LLP is a law firm engaged in optimizing risk and opportunities in complex matters in highly regulated and politicized environments.” Source: RevenueBase Database · checked Sep 28, 2026
11	Rock Creek Energy Group, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “Rock Creek Energy Group is a group of diverse and like-minded professionals with a shared passion – Energy.” Source: RevenueBase Database · checked Sep 28, 2026
12	Sustainable Capital Advisors	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 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 28, 2026
13	Levine, Blaszak, Block & Boothby, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Since it was founded in 1993, LB3 has been the leading firm guiding large customers through a maze of legal, technical, financial, and regulatory issues to close world-class…” Source: RevenueBase Database · checked Sep 28, 2026
14	Rebel North America	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	12 contacts →
	Indirect evidence “As one of the leading U.S.” Source: RevenueBase Database · checked Sep 28, 2026
15	Taylor-Dejongh	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Taylor-DeJongh (TDJ) is an international financial advisory firm based in Washington, D.C.” Source: RevenueBase Database · checked Sep 28, 2026
16	Hills Stern LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “Hills Stern LLP is a Washington DC-based law firm with global relationships and an international practice.” Source: RevenueBase Database · checked Sep 28, 2026
17	Wasel & Wasel	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “Lawyers and Consultants \| Tier-1 Services Since 1799 \| From the trade courts of the 19th-century Levant to the corridors of Washington D.C, Melbourne, Toronto, and Abu Dhabi…” Source: RevenueBase Database · checked Sep 28, 2026
18	Edinger Associates Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Edinger Associates PLLC is a boutique business and finance law and consulting firm based in Washington, DC, with a focus on mergers and acquisitions, exchanges, joint ventures…” Source: RevenueBase Database · checked Sep 28, 2026
19	Temple LAW Offices	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “At the Temple Law Offices, our team of experienced attorneys understand the complexity of the law and work tirelessly to represent our diverse, international client base.” Source: RevenueBase Database · checked Sep 28, 2026
20	Cbig LAW	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Strong evidence “CBIG Law is an investment management law firm that advises hedge funds, private equity, real estate, cryptocurrency, venture capital, and other alternative investment fund…” Source: RevenueBase Database · checked Sep 28, 2026
21	Lanton, Lanton & Sosa LAW Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Where innovators in healthcare, tech and clean energy come for advice.” Source: RevenueBase Database · checked Sep 28, 2026
22	Jacobson Solutions LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “We are an US-based advisory firm specialized in supporting energy and infrastructure developers, investors, and operators through the disruptions facing their industries today.” Source: RevenueBase Database · checked Sep 28, 2026
23	SB Law, Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “SB Law is dedicated to providing strategic, first-tier legal advice and analysis that assists companies in meeting wide-ranging regulatory obligations while accomplishing business…” Source: RevenueBase Database · checked Sep 28, 2026
24	Somertons	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “Somertons is a Washington, D.C-based law firm with a practice that focuses on corporate, securities, M&A, strategic investment, and U.S.” Source: RevenueBase Database · checked Sep 28, 2026
25	DE Almeida Pereira	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Located in Washington D.C.” Source: RevenueBase Database · checked Sep 28, 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 fund law firms. 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 fund law firms.
Partial evidence: Its own public description names part of infrastructure fund law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure fund law firms. 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 41 infrastructure fund law firms based in Washington, United States

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Infrastructure fund law firms based in Washington, United States at a glance

As of Sep 28, 2026

61.0%Verified-email coverage

307.0Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

5,001-10,000

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 41 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 fund law firms, 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 fund law firms”. 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 fund law firms), 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 fund law firms, 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, 7,677 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 28, 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 fund law firms 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 fund law firms, 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 fund law firms are there based in Washington, United States?

RevenueBase identified 41 infrastructure fund law firms 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?

Arnold & Porter, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most infrastructure fund law firms?

New York leads the United States with 115 headquartered companies, followed by Washington (41) and Chicago (39).

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 7,677 verified decision-maker contacts tracked across these 41 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 28, 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.