Company lists · Data refreshed September 2026
Top 25 Collaborative family law firms based in New York, United States
RevenueBase identified 84 collaborative family law firms headquartered in New York, United States as of September 2026 and tracks 543 professional contacts across them, including 312 with verified work emails and 252 with mobile numbers. New York is the largest hub.
This list covers collaborative family law 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 8, 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.
The 25 largest collaborative family law firms based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 50 contacts → | ||||
Strong evidence “The practice of Aronson Mayefsky & Sloan, LLP is devoted exclusively to matrimonial and family law.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 2 | 36 contacts → | ||||
Partial evidence “Berkman Bottger Newman & Schein, LLP is a New York boutique matrimonial law firm with offices in Manhattan, Long Island, and Westchester.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 3 | 35 contacts → | ||||
Strong evidence “Rower LLC is devoted to helping people through complicated, and often difficult, family law matters.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 4 | 34 contacts → | ||||
Strong evidence “We are New York's preeminent matrimonial and family law firm.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 5 | 30 contacts → | ||||
Strong evidence “Family law issues are among the most stressful, emotional, and complex situations a family can experience.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 6 | 28 contacts → | ||||
Strong evidence “Chemtob Moss Forman & Beyda, LLP is one of the largest matrimonial law firms in New York City focused on the practice of Divorce, Family and Matrimonial Law.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 7 | 20 contacts → | ||||
Strong evidence “For more than 40 years, the attorneys at Green Kaminer Min & Rockmore LLP, have provided high-quality family law services to clients in Manhattan, throughout New York and…” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 8 | 19 contacts → | ||||
Strong evidence “Who We Are KSTM is dedicated exclusively to the practice of matrimonial and family law.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 9 | 19 contacts → | ||||
Indirect evidence “Mosberg Sharma Stambleck Gross LLP's (MSSG) boutique practice represents high net worth individuals in matters involving divorce, child custody, spousal and child support…” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 10 | 18 contacts → | ||||
Strong evidence “Founded in 2016, Alter Wolff Foley & Stutman LLP is a New York-based law firm, providing a full range of matrimonial and family legal services.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 11 | 16 contacts → | ||||
Strong evidence “The practice of Mantel McDonough Riso, LLP is devoted primarily to matrimonial and family law.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 13 | 12 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 14 | 10 contacts → | ||||
Indirect evidence “In 2012, two of New York’s leading matrimonial attorneys merged their practices to form Donohoe Talbert LLP.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 contacts → | ||||
Indirect evidence “Bikel Rosenthal & Schanfield LLP is the firm that high-powered clients turn to during their divorces.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 16 | 7 contacts → | ||||
Partial evidence “Storch Byrne LLP is a boutique law firm that concentrates in complex commercial litigation and matrimonial law.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Strong evidence “At Vacca Family Law Group, we focus on resolving family and divorce-related legal disputes through non-adversarial methods, avoiding the emotional and financial turmoil associated…” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Strong evidence “Founded in 2014, Mason Law & Mediation provides highly-skilled and holistic mediation, Collaborative Law, settlement negotiation, and legal coaching services to individuals…” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Partial evidence “We're a law firm committed to providing high quality legal advice and service to clients.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Strong evidence “Based in midtown Manhattan, Greenblatt Law LLC specializes in all Matrimonial and Family Law matters, from pre-nuptial agreements and negotiated settlements to complex custody and…” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “LoPreto + Levy, LLP is a company based out of NEW YORK, NY, United States.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Partial evidence “At Family Mediation Group of New York, we offer mediation services for married or unmarried couples seeking a divorce or dissolution of their relationship while avoiding a costly…” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Indirect evidence “Carol L.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “Moses Ziegelman & Kornfeld, LLP is a boutique matrimonial firm with offices conveniently located in the Empire State Building in Manhattan.” Source: RevenueBase Database · checked Sep 8, 2026Thanks. The Data Team will review it. | |||||
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: collaborative family 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 collaborative family law firms.
- Partial evidence
- Its own public description names part of collaborative family law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name collaborative family 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 84 collaborative family law firms based in New York, United States
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Collaborative family law firms based in New York, United States at a glance
As of Sep 8, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 11.0dCompany record updated
Median 47.0dHow 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 collaborative family 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 New York, United States whose own description of what they do matches “collaborative family 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 collaborative family 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 collaborative family law 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, 312 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 8, 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.
Collaborative family law firms by metro in the United States
- Collaborative family law firms in New York111
- Collaborative family law firms in Houston77
- Collaborative family law firms in Chicago77
- Collaborative family law firms in Los Angeles61
- Collaborative family law firms in San Diego61
- Collaborative family law firms in Atlanta58
- Collaborative family law firms in Denver54
- Collaborative family law firms in Austin49
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 collaborative family 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 collaborative family law firms are there based in New York, United States?
RevenueBase identified 84 collaborative family law 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?
Aronson Mayefsky & Sloan, LLP, headquartered in New York, tops this list with the largest team on record.
Which city has the most collaborative family law firms?
New York leads with 111 headquartered companies, followed by Houston (77) and Chicago (77).
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 312 verified decision-maker contacts tracked across these 84 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 8, 2026.
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Collaborative family law firms by geography
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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.
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