Company lists · Data refreshed September 2026
Top 25 Non-profit law firms based in Houston, United States
RevenueBase identified 84 non-profit law firms headquartered in Houston, United States as of September 2026 and tracks 771 professional contacts across them, including 246 with verified work emails. New York is the largest hub.
This list covers non-profit law firms headquartered in Houston, 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 14, 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 non-profit law firms based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 165 contacts → | ||||
Partial evidence “Coats Rose is a transactional and litigation law firm focused on development: the development of real estate, affordable housing, special purpose districts, business and private…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 77 contacts → | ||||
Indirect evidence “Beck Redden is a firm of courtroom lawyers.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 37 contacts → | ||||
Strong evidence “Houston Volunteer Lawyers is a non-profit service of the Houston Bar Association.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 15 contacts → | ||||
Indirect evidence “Nathan Sommers Gibson Dillon PC offers top tier legal representation in the areas of corporate/tax, real estate, bankruptcy, banking/finance, and litigation.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 12 contacts → | ||||
Partial evidence “Founded by veterans of big law firms, academic medical centers, and public company board rooms, Nichols Weitzner Thomas LLP leverages its knowledge and experience to counsel…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 11 contacts → | ||||
Partial evidence “The Law Offices of Colby Lewis is a distinguished firm specializing in championing the rights of individuals affected by major disasters and personal tragedies, whether their…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 10 contacts → | ||||
Indirect evidence “Largely “big-firm” refugees, Schirrmeister Diaz-Arrastia Brem lawyers have created a cost-effective alternative to that model.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 7 contacts → | ||||
Indirect evidence “The advice and representation we provide our clients is based on years of experience helping individuals and organizations deal with crises both large and small.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 7 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 contacts → | ||||
Indirect evidence “After 15 Years of Serving Clients Together.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 7 contacts → | ||||
Partial evidence “Weygandt Law understands that you are BUSY and your family or business is growing, but that you want to provide financial security and prosperity for your loved ones, or for a…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Partial evidence “We are a law firm and legal warriors who practice in the areas of personal injury, civil rights, business law, real estate, and tax strategy.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 contacts → | ||||
Indirect evidence “A Modern Approach We understand clients expect their counsel to be smart, experienced, practical, and efficient.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 contacts → | ||||
Partial evidence “We serve clients through a team-based approach by providing studied legal advice, helping clients understand the many laws and regulations that affect their case, and representing…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Partial evidence “HLRS™ provides referrals to over 200 private practice attorneys who have been screened and selected on experience in specific areas of the law.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 contacts → | ||||
Partial evidence “Gigit Tyler and Carly Maderer met in law school and after five years, moved to Cypress, Texas to open Tyler and Maderer, PLLC.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Indirect evidence “Foster Yarborough PLLC aims to provide pragmatic and efficient solutions to the legal problems that real people experience everyday.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Partial evidence “The Petry Law Firm is a growing law office in the Houston Heights.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “Class action lawyers representing plaintiffs nationwide in consumer protection, product defect, FCRA, and other complex cases.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Partial evidence “The Smotherman Law Firm is a client-centered law firm that serves clients in Houston and surrounding areas in the practice of Criminal Defense, Family and Real Estate law.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Indirect evidence “Providing top notch legal advice.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Partial evidence “Dugger & Key PLLC is a boutique business law firm located in the heart of Houston's Energy Corridor.” Source: RevenueBase Database · checked Sep 14, 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: non-profit 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 non-profit law firms.
- Partial evidence
- Its own public description names part of non-profit law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name non-profit 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 non-profit law firms based in Houston, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 246 reachable decision-makers.
Free signup · no credit card
Non-profit law firms based in Houston, United States at a glance
As of Sep 14, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 84 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 non-profit 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 Houston, United States whose own description of what they do matches “non-profit 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 non-profit 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 non-profit law firms, and records with no verified work email. Companies headquartered outside Houston 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, 246 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 14, 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.
Non-profit law firms by metro in the United States
- Non-profit law firms in New York168
- Non-profit law firms in Washington126
- Non-profit law firms in Chicago112
- Non-profit law firms in Los Angeles111
- Non-profit law firms in Houston84
- Non-profit law firms in Atlanta63
- Non-profit law firms in Philadelphia63
- Non-profit law firms in Miami56
- Non-profit law firms in San Francisco55
- Non-profit law firms in Dallas52
- Non-profit law firms in Denver51
- Non-profit law firms in Portland50
- Non-profit law firms in San Diego49
- Non-profit law firms in Seattle44
- Non-profit law firms in Austin40
- Non-profit law firms in Boston39
- Non-profit law firms in Phoenix39
- Non-profit law firms in Minneapolis32
- Non-profit law firms in Oakland31
- Non-profit law firms in Tampa31
- Non-profit law firms in Charlotte27
- Non-profit law firms in Orlando27
- Non-profit law firms in Columbus26
- Non-profit law firms in Jacksonville26
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 non-profit 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 non-profit law firms are there based in Houston, United States?
RevenueBase identified 84 non-profit law firms headquartered in Houston, 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?
Coats Rose, P.C, headquartered in Houston, tops this list with the largest team on record.
Which city has the most non-profit law firms?
New York leads with 168 headquartered companies, followed by Washington (126) and Chicago (112).
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 246 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 14, 2026.
Ready to reach these companies? Verified emails and direct dials for all 84 non-profit law firms based in Houston, United States. Start with a free account, no credit card.
Download this list →Related lists
Non-profit law firms by geography
- Non-profit law firms based in Belo Horizonte, Brazil
- Non-profit law firms based in Brasilia, Brazil
- Non-profit law firms based in Campinas, Brazil
- Non-profit law firms based in Curitiba, Brazil
- Non-profit law firms based in Porto Alegre, Brazil
- Non-profit law firms based in Recife, Brazil
- Non-profit law firms based in Rio De Janeiro, Brazil
- Non-profit law firms based in Salvador, Brazil
- Non-profit law firms based in Sao Paulo, Brazil
- Non-profit law firms based in Calgary, Canada
- Non-profit law firms based in Ottawa, Canada
- Non-profit law firms based in Toronto, Canada
Browse the directory
Browse: Companies home · Non-profit law firms in United States · All United States lists · All Non-profit law firms lists · New 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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Non-profit law firms based in Belo Horizonte, Brazil
- Non-profit law firms based in Brasilia, Brazil
- Non-profit law firms based in Campinas, Brazil
- Non-profit law firms based in Curitiba, Brazil
- Non-profit law firms based in Porto Alegre, Brazil
- Non-profit law firms based in Recife, Brazil