Company lists · Data refreshed September 2026

Top 8 Business law firms based in San Juan, United States

RevenueBase identified 27 business law firms headquartered in San Juan, United States as of September 2026 and tracks 558 professional contacts across them, including 181 with verified work emails. New York is the largest hub.

This list covers business law firms headquartered in San Juan, 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 20, 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 20, 2026 86% judged on-target in blind review
27Companies
558Contacts tracked
181Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 8 largest business law firms based in San Juan, United States

Ranked by team size
Top 8 of 27 business law firms based in San Juan, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to business 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceSan Juan, United StatesHQ checked Sep 20, 202611-5023 contacts →

Strong evidence

“Casillas, Santiago & Torres LLC is a boutique law firm providing legal advice to businesses on Labor & Employment, Corporate, Tax, Employee Benefits, Litigation, Real Estate and…”

Source: RevenueBase Database · checked Sep 20, 2026
2Strong evidenceSan Juan, United StatesHQ checked Sep 20, 202611-5018 contacts →

Strong evidence

“Sepulvado, Maldonado & Couret is a boutique litigation law firm based in Hato Rey, right in the heart of Puerto Rico’s financial district.”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceSan Juan, United StatesHQ checked Sep 20, 202611-5015 contacts →

Indirect evidence

“Founded in 1995, Schuster LLC has grown steadily, with an ever expanding base of corporate clients.”

Source: RevenueBase Database · checked Sep 20, 2026
4Strong evidenceSan Juan, United StatesHQ checked Sep 20, 202611-5012 contacts →

Strong evidence

“Founded in 2002 by the Chairman and two of the principal partners of the Corporate Finance and Banking Department of a major Hato Rey law firm, we operate as a full service firm.”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceSan Juan, United StatesHQ checked Sep 20, 202611-5010 contacts →

Indirect evidence

“Morell Cartagena & Dapena LLC was founded by Pedro A.”

Source: RevenueBase Database · checked Sep 20, 2026
6Strong evidenceSan Juan, United StatesHQ checked Sep 20, 202611-507 contacts →

Strong evidence

“Bauzá Brau Irizarry & Silva (“BIOS Law”) is a boutique law firm located in San Juan, Puerto Rico.”

Source: RevenueBase Database · checked Sep 20, 2026
7Strong evidenceSan Juan, United StatesHQ checked Sep 20, 20261-101 contacts →

Strong evidence

“Valentín LLC is a boutique legal and strategic advisory firm with deep expertise in aviation law, corporate governance, and cross-border regulatory compliance.”

Source: RevenueBase Database · checked Sep 20, 2026
8Indirect evidenceSan Juan, United StatesHQ checked Sep 20, 20261-101 contacts →

Indirect evidence

“P.A.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 8 of 27 business law firms based in San Juan, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 181 reachable decision-makers.

Free signup · no credit card

View the full list →

Business law firms based in San Juan, United States at a glance

As of Sep 20, 2026
32.4%Verified-email coverage
20.7Average contacts per company
1-10Median size (employees)
4525.9%Largest-city concentration · New York
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
15
11-50
7
51-200
5

Email recency for this list is measured across the whole United States list rather than for San Juan, so it is reported there. Company counts and contact totals on this page are exact for San Juan, over 27 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 business 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 San Juan, United States whose own description of what they do matches “business 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 business 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 business law firms, and records with no verified work email. Companies headquartered outside San Juan 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, 181 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 20, 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.

Business 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 business 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 business law firms are there based in San Juan, United States?

RevenueBase identified 27 business law firms headquartered in San Juan, 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?

Casillas, Santiago & Torres, LLC, headquartered in San Juan, tops this list with the largest team on record.

Which city has the most business law firms?

New York leads with 1222 headquartered companies, followed by Chicago (563) and Los Angeles (533).

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 181 verified decision-maker contacts tracked across these 27 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 27 business law firms based in San Juan, United States. Start with a free account, no credit card.

Download this list →

Related lists

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.