Company lists · Data refreshed September 2026

Top 25 Family office law firms based in Washington, United States

Name: Family office 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 53 companies tracked

RevenueBase identified 53 company matches for family office law firms associated with Washington, United States as of September 2026 and tracks 246 professional contacts across them, including 115 with verified work emails. Across the United States, New York is the largest hub for this category (446 companies); Washington has 53.

This list covers company matches for family office law 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 28, 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 28, 2026 How this list was built

53Companies

246Contacts tracked

115Verified emails

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

The 25 largest family office law firms based in Washington, United States

Ranked by team size

Top 25 of 53 company matches for family office law firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Ivins, Phillips & Barker	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	50 contacts →
	Exact match “Ivins, Phillips & Barker is exclusively engaged in the practice of federal tax, benefits and compensation, and estate and gift tax law.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Kozusko Harris Duncan	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	34 contacts →
	Exact match “Kozusko Harris Vetter Wareh Duncan LLP ("KHD") is a boutique trusts and estates law firm serving a select group of clients.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Rosemckenna, Pllc	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	17 contacts →
	Exact match “RoseMcKenna PLLC is a boutique accounting firm dedicated to providing the absolute best in personalized and professional tax services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Royal LAW Firm, Pllc	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	10 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Franklin Karibjanian & LAW Pllc	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	8 contacts →
	Exact match “Our Story Franklin Karibjanian & Law PLLC is a boutique trusts and estates law firm, serving clients in the National Capital region, Florida and beyond.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Accelerant LAW	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	8 contacts →
	Exact match “Accelerant was founded by entrepreneurial-minded attorneys who strive to modernize the current approach to estate planning by incorporating 21st-century business practices and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Pennington Partners	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	11-50	8 contacts →
	Exact match “Pennington Partners is a multi-family office with a mission to elevate the lives of highly successful entrepreneurial founders and their families with a full suite of modern…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Tobin, O'connor & Ewingdc	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	5 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Capital Area Planning Group	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	4 contacts →
	Exact match “Capital Area Planning Group is a boutique financial planning and investment management firm based in Washington, D.C.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Prime Estate Planning	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	3 contacts →
	Exact match “What makes our firm different is that we were built with the needs of growing families in mind.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	MNF Legal Pllc	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	3 contacts →
	Exact match “When it comes to planning, every client is unique, and we recognize this by tailoring the planning process to meet your specific objectives.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Gift Of Love Legal Pllc	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	3 contacts →
	Exact match “Serving Clients Throughout Washington, DC and Maryland.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Forster LAW Firm	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	3 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Kevin C. Martin, Attorney At Law, Pllc	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “My goal is to be your trusted advisor who helps you make the very best personal, financial, and legal decisions for you and your family throughout your lifetime.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Cbig LAW	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “CBIG Law is an investment management law firm that advises hedge funds, private equity, real estate, cryptocurrency, venture capital, and other alternative investment fund…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Preserve Private Wealth, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “Preserve Private Wealth (PPW) is a modern, independent wealth management firm providing personalized money management and comprehensive financial planning in a fiduciary capacity.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Brookslaw PC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “Boutique law firm specializing in developing strategic tax planning initiatives for businesses and investors, including international corporate treasury centers, intellectual…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Mkfl International Family LAW	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “MKFL stands as a premier boutique international family law firm, providing specialized legal consulting and dispute resolution services to family lawyers and their clients…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	MZ Capital Management	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “MZ Capital Management is an independent wealth management firm.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	The Yoshino Group	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Fincap360	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “Building on your success.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	ILG Private Wealth	Exact match	Washington, PA, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Privatus Counsel	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “We strive to fill the role of a personal counsel for your company or family office, if you do not have one; or act as a supplemental team that can support the the existing…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	The LAW Office Of Seth Shich LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “Uncompromising in its pursuit of legal excellence and client service, Shich LLC represents both corporate and individual clients in a wide variety of legal matters, ranging from…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Pine Harbor Wealth Management	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	1-10	1 contacts →
	Exact match “A boutique investment and wealth management firm focused on helping families navigate complex financial decisions.” Recorded in the RevenueBase company graph · Sep 28, 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 “family office law 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 53 family office law firms based in Washington, United States

See the full list, filter by size, metro and specialty, and access 115 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Family office law firms based in Washington, United States at a glance

As of Sep 28, 2026

46.7%Verified-email coverage

4.6Average 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 53 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 “family office law 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 115 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 28, 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.

Family office law 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 “family office law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many family office law firms are there based in Washington, United States?

RevenueBase identified 53 company matches for family office law 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?

Ivins, Phillips & Barker 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 family office law firms?

New York leads the United States with 446 company records, followed by Houston (172) and Chicago (169). Washington has 53.

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 115 professional contacts with verified work emails tracked across these 53 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 53 family office law firms based in Washington, United States. Start with a free account, no credit card.

Download this list →

Related lists

Family office law firms 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 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.