Company lists · Data refreshed September 2026

Top 19 Trust dispute resolution firms based in New York, United States

RevenueBase identified 46 trust dispute resolution firms headquartered in New York, United States as of September 2026 and tracks 334 professional contacts across them, including 165 with verified work emails. Los Angeles is the largest hub.

This list covers trust dispute resolution firms headquartered in New York, 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 22, 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 22, 2026 86% judged on-target in blind review
46Companies
334Contacts tracked
165Verified emails
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The 19 largest trust dispute resolution firms based in New York, United States

Ranked by team size
Top 19 of 46 trust dispute resolution firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to trust dispute resolution 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceNew York, NY, United StatesHQ checked Sep 22, 202651-200116 contacts →

Strong evidence

“NAM is a full-service provider of Alternative Dispute Resolution (ADR) services – supporting clients throughout the U.S.”

Source: RevenueBase Database · checked Sep 22, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 202651-20079 contacts →

Indirect evidence

“Cassin & Cassin LLP, a law firm with three offices in New York City, Purchase, NY and Phoenix, AZ, has four decades of experience providing the highest quality of service to our…”

Source: RevenueBase Database · checked Sep 22, 2026
3Partial evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-109 contacts →

Partial evidence

“WITH SOPHISTICATED TRUST AND ESTATE SOLUTIONS – BE IT FOR COMPLEX ESTATE PLANNING SCENARIOS, DIFFICULT ESTATE ADMINISTRATIONS OR COMPLEX TAX AND ESTATE LITIGATIONS – WE LEAD…”

Source: RevenueBase Database · checked Sep 22, 2026
4Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-108 contacts →

Indirect evidence

“The law firm of Manice Budd & Baggett LLP, with attorneys licensed in New York, Connecticut, and Florida, specializes in counseling individuals, families, private foundations, and…”

Source: RevenueBase Database · checked Sep 22, 2026
5Partial evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-106 contacts →

Partial evidence

“RK Law PC advises clients in the areas of Probate, Estate & Trust Administration, Estate Planning, Contested and Uncontested Guardianship matters, Will Contests, Contested…”

Source: RevenueBase Database · checked Sep 22, 2026
6Indirect evidenceNew York, United StatesHQ checked Sep 22, 20261-105 contacts →

Indirect evidence

“Lawrence Chaifetz is principal and partner at Chaifetz and Chaifetz, LLC.”

Source: RevenueBase Database · checked Sep 22, 2026
7Indirect evidenceNew York, United StatesHQ checked Sep 22, 20261-105 contacts →

Indirect evidence

“Edmonds & Co.”

Source: RevenueBase Database · checked Sep 22, 2026
8Indirect evidenceNew York, United StatesHQ checked Sep 22, 202611-504 contacts →

Indirect evidence

“Rich, Intelisano & Katz is an internationally recognized law firm that focuses on complex, highly sophisticated litigation and arbitration, and related advisory and transactional…”

Source: RevenueBase Database · checked Sep 22, 2026
9Partial evidenceNew York, NY, United StatesHQ checked Sep 22, 202611-503 contacts →

Partial evidence

“Founded in 1991, RLR has a long record of successfully representing clients in complex business disputes and commercial transactions.”

Source: RevenueBase Database · checked Sep 22, 2026
10Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 202611-503 contacts →

Indirect evidence

“For over forty years, Lassar & Cowhey LLP has succeeded in providing sophisticated legal and tax counsel to a full range of clients.”

Source: RevenueBase Database · checked Sep 22, 2026
11Partial evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-103 contacts →

Partial evidence

“Russo Law LLC leverages technology and unparalleled training to deliver sophisticated yet cost-effective to negotiate and draft contracts and resolve business disputes (e.g.”

Source: RevenueBase Database · checked Sep 22, 2026
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-103 contacts →

Indirect evidence

“We are boutique law firm founded by partners, Lawrence I.”

Source: RevenueBase Database · checked Sep 22, 2026
13Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-103 contacts →

Indirect evidence

“Carol L.”

Source: RevenueBase Database · checked Sep 22, 2026
14Partial evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-102 contacts →

Partial evidence

“PZ Law Group is a boutique trusts and estates law firm, based in midtown Manhattan.”

Source: RevenueBase Database · checked Sep 22, 2026
15Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-102 contacts →

Indirect evidence

“AcumenADR LLC is a company based out of New York, NY, United States.”

Source: RevenueBase Database · checked Sep 22, 2026
16Indirect evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
17Partial evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-101 contacts →

Partial evidence

“New York City Trusts, Estates, and Probate Attorneys ~ helping New Yorkers leave a legacy, forever.”

Source: RevenueBase Database · checked Sep 22, 2026
18Partial evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-101 contacts →

Partial evidence

“McCanliss & Early, a law firm in New York City's financial district, assists in estate planning, drafting of wills and trusts; furnishes elder law services;”

Source: RevenueBase Database · checked Sep 22, 2026
19Partial evidenceNew York, NY, United StatesHQ checked Sep 22, 20261-101 contacts →

Partial evidence

“The Law Offices of Thomas Sciacca is a full-service law firm concentrating in Estate Planning, Estate & Trust Administration, Surrogate’s Court Proceedings, Estate Litigation…”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 19 of 46 trust dispute resolution firms based in New York, United States

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Trust dispute resolution firms based in New York, United States at a glance

As of Sep 22, 2026
49.4%Verified-email coverage
7.3Average contacts per company
1-10Median size (employees)
102.2%Largest-city concentration · Los Angeles
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
38
11-50
6
51-200
2

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 46 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 trust dispute resolution 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 New York, United States whose own description of what they do matches “trust dispute resolution 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 trust dispute resolution 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 trust dispute resolution firms, and records with no verified work email. Companies headquartered outside New York 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, 165 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 22, 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.

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 trust dispute resolution 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 trust dispute resolution firms are there based in New York, United States?

RevenueBase identified 46 trust dispute resolution firms headquartered in New York, 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?

NAM National Arbitration And Mediation, headquartered in New York, tops this list with the largest team on record.

Which city has the most trust dispute resolution firms?

Los Angeles leads with 47 headquartered companies, followed by New York (46) and Atlanta (35).

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 165 verified decision-maker contacts tracked across these 46 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 22, 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.