Company lists · Data refreshed September 2026

Top 25 Fiduciary law firms based in Washington, United States

Name: Fiduciary 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 65 companies tracked

RevenueBase identified 65 fiduciary law firms headquartered in Washington, United States as of September 2026 and tracks 630 professional contacts across them, including 351 with verified work emails. Across the United States, New York is the largest hub for this category (362 companies); Washington has 65.

This list covers fiduciary 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

65Companies

630Contacts tracked

351Verified emails

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The 25 largest fiduciary law firms based in Washington, United States

Ranked by team size

Top 25 of 65 fiduciary 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 fiduciary 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	Groom LAW Group, Chartered	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	174 contacts →
	Partial evidence “Groom Law Group, Chartered is widely recognized as the leading benefits law firm in the United States with over 90 attorneys dedicated solely to the practice of employee benefits…” Source: RevenueBase Database · checked Sep 28, 2026
2	Ivins, Phillips & Barker	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	50 contacts →
	Partial evidence “Ivins, Phillips & Barker is exclusively engaged in the practice of federal tax, benefits and compensation, and estate and gift tax law.” Source: RevenueBase Database · checked Sep 28, 2026
3	Peacock Keller, LLP	Partial evidence	Washington, PA, United StatesHQ checked Sep 28, 2026	51-200	38 contacts →
	Partial evidence “Peacock Keller is a full service law firm headquartered in Washington, Pennsylvania.” Source: RevenueBase Database · checked Sep 28, 2026
4	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
5	Kozusko Harris Duncan	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	34 contacts →
	Partial evidence “Kozusko Harris Vetter Wareh Duncan LLP ("KHD") is a boutique trusts and estates law firm serving a select group of clients.” Source: RevenueBase Database · checked Sep 28, 2026
6	Slevin & Hart P.C	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “Slevin & Hart, P.C.” Source: RevenueBase Database · checked Sep 28, 2026
7	Veritas LAW	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	16 contacts →
	Partial evidence “A full-service business law firm, Veritas Law has expertise in corporate and transactional law, litigation, and licensing.” Source: RevenueBase Database · checked Sep 28, 2026
8	Friedlander Misler Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “Founded in 1964, we are a Washington, D.C.” Source: RevenueBase Database · checked Sep 28, 2026
9	Antonoplos & Associates, Attorneys At LAW	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Real Estate, Construction Litigation, Estate Planning, Wills & Trusts, and Probate Attorneys Serving Washington, DC, Maryland, and Virginia.” Source: RevenueBase Database · checked Sep 28, 2026
10	Raffa Investment Advisers	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	10 contacts →
	Indirect evidence “Founded more than 20 years ago, Raffa Investment Advisers was purpose-built to serve nonprofit organizations and membership associations nationwide.” Source: RevenueBase Database · checked Sep 28, 2026
11	Royal LAW Firm, Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	10 contacts →
	Partial evidence “The Royal Law Firm PLLC, founded in 2009 by Priya Prakash Royal, Esq, LL.M, MBA, AEP®, TEP, is a private client law firm serving individuals, families, and closely held…” Source: RevenueBase Database · checked Sep 28, 2026
12	The Elder & Disability LAW Center Edlc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	9 contacts →
	Partial evidence “The Elder & Disability Law Center (EDLC) Washington, D.C.” Source: RevenueBase Database · checked Sep 28, 2026
13	Franklin Karibjanian & LAW Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	8 contacts →
	Partial evidence “Our Story Franklin Karibjanian & Law PLLC is a boutique trusts and estates law firm, serving clients in the National Capital region, Florida and beyond.” Source: RevenueBase Database · checked Sep 28, 2026
14	Accelerant LAW	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Accelerant was founded by entrepreneurial-minded attorneys who strive to modernize the current approach to estate planning by incorporating 21st-century business practices and…” Source: RevenueBase Database · checked Sep 28, 2026
15	Sullivan & Barros, LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “Sullivan & Barros, LLP specializes in Washington, DC, real estate, zoning, litigation, and business law.” Source: RevenueBase Database · checked Sep 28, 2026
16	Dominion Financial Consultants	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “Dominion Financial Consultants is a fee-only financial advisory and consulting firm that was founded in 2006.” Source: RevenueBase Database · checked Sep 28, 2026
17	Tobin, O'connor & Ewingdc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Washington DC Business Lawyer Large-Firm Results with Boutique-Firm Attention At Tobin, O’Connor & Ewing, we focus on providing our clients with effective representation and…” Source: RevenueBase Database · checked Sep 28, 2026
18	Musolino & Dessel, Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Partial evidence “Musolino & Dessel PLLC is a boutique law firm based out of 1615 L St NW #440, Washington, D.C.” Source: RevenueBase Database · checked Sep 28, 2026
19	Potts-Dupre, Hawkins & Kramer, Chtd	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
20	Prime Estate Planning	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “What makes our firm different is that we were built with the needs of growing families in mind.” Source: RevenueBase Database · checked Sep 28, 2026
21	Garner LAW Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Garner Law PLLC is a small law firm with its focus on providing passionate, dedicated representation to clients in Maryland and the District of Columbia.” Source: RevenueBase Database · checked Sep 28, 2026
22	Banks LAW Office	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Banks Law Office is a boutique law firm focused on on representing consumers throughout the United States in state and federal court and in FINRA arbitration.” Source: RevenueBase Database · checked Sep 28, 2026
23	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
24	Gift Of Love Legal Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “Serving Clients Throughout Washington, DC and Maryland.” Source: RevenueBase Database · checked Sep 28, 2026
25	Forster LAW Firm	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence 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: fiduciary 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 fiduciary law firms.
Partial evidence: Its own public description names part of fiduciary law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fiduciary 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 65 fiduciary law firms based in Washington, United States

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Fiduciary law firms based in Washington, United States at a glance

As of Sep 28, 2026

55.7%Verified-email coverage

9.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 65 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 fiduciary 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 “fiduciary 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 fiduciary 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 fiduciary 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, 351 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.

Fiduciary 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 fiduciary 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 fiduciary law firms are there based in Washington, United States?

RevenueBase identified 65 fiduciary 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?

Groom LAW Group, Chartered, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most fiduciary law firms?

New York leads the United States with 362 headquartered companies, followed by Chicago (213) and Houston (213). Washington has 65.

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 351 verified decision-maker contacts tracked across these 65 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.