Company lists · Data refreshed September 2026
Top 25 Professional services networks based in Houston, United States
RevenueBase identified 54 professional services networks headquartered in Houston, United States as of September 2026 and tracks 1,477 professional contacts across them, including 768 with verified work emails. Across the United States, New York is the largest hub for this category (137 companies); Houston has 54.
This list covers professional services networks 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 29, 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 professional services networks based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 231 contacts → | ||||
Indirect evidence “eTeam Sirius Solutions L.L.C.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 198 contacts → | ||||
Indirect evidence “Calvetti Ferguson is one of the largest independent CPA firms in the United States.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 157 contacts → | ||||
Indirect evidence “Melton & Melton is an independent, Houston-based public accounting firm with diverse audit, tax and client accounting practices.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 135 contacts → | ||||
Indirect evidence “At abip CPAs & Advisors, we provide assurance, tax, and advisory services tailored to mid-market companies and entrepreneurs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 125 contacts → | ||||
Indirect evidence “MaloneBailey is a full service, PCAOB-registered CPA firm that provides audit, tax and consulting services to companies both publicly-traded and privately-held.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 87 contacts → | ||||
Indirect evidence “HRSS is a full-service accounting, tax, audit, and advisory firm with 40 years of experience serving businesses and individuals, with a focus on middle-market clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 70 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 57 contacts → | ||||
Indirect evidence “At MGA, our approach is simple.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 53 contacts → | ||||
Partial evidence “One of the largest local public accounting firms in Houston, Mohle Adams has provided professional counsel to Texas companies and residents to help them achieve their business and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 51 contacts → | ||||
Indirect evidence “Lex Mundi is a membership organization of 150 law firms, united by a unique collaborative culture.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 49 contacts → | ||||
Indirect evidence “Desroches Partners, LLP, located in the I-10 Energy Corridor of West Houston, offers a complete range of tax, assurance and consulting services to a diverse portfolio of clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 45 contacts → | ||||
Indirect evidence “Appreciation is, in some ways, an unusual commitment from a business-oriented accounting firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 25 contacts → | ||||
Indirect evidence “AXIA has set the standard for working with organizations to tackle complex business issues, boost operating performance and maximize stakeholder value.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 23 contacts → | ||||
Indirect evidence “Aycock & Company, LLP is a firm of certified public accountants founded in February of 2006 and located in the Galleria area of Houston.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 19 contacts → | ||||
Partial evidence “World Services Group is the most prominent global network of independent firms that provides an exclusive setting and platform to connect its members to the most elite legal firms…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 19 contacts → | ||||
Indirect evidence “We think beyond today’s taxes and audits, to the financial needs and possibilities of your future.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 11 contacts → | ||||
Partial evidence “BA Network is a response to globalization and the increasing complexity in the business environment.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 10 contacts → | ||||
Indirect evidence “Argueta CPA Firm, based in Houston, offers assistance to businesses and individuals with Assurance, Tax, Accounting, Advisory, and Consulting Services addressing the needs of both…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 7 contacts → | ||||
Partial evidence “Since 2003, Reynolds and Associates has provided professional accounting services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Partial evidence “At Moderhak & Associates PC we cater to businesses and families looking for a professional CPA firm they can trust.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 6 contacts → | ||||
Indirect evidence “Bowles Womack & Company (BWC) is a specialized full service Houston-based Certified Public Accounting (CPA) firm providing advisory, tax and assurance in private client services…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Indirect evidence “We have been trusted advisors to our clients for over 40 years with our tax, accounting and consulting needs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 contacts → | ||||
Indirect evidence “GBH CPAs, PC is a top 25 Houston accounting firm and provides comprehensive audit, tax, advisory and valuation services (including ESOPs) to publicly and privately held companies…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Strong evidence “Protean Performance Solutions is an international network of over 400 affiliated professionals dedicated to providing superior business solutions for clients all around the world.” Source: RevenueBase Database · checked Sep 29, 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: professional services networks. 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 professional services networks.
- Partial evidence
- Its own public description names part of professional services networks, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name professional services networks. 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 54 professional services networks based in Houston, United States
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Professional services networks based in Houston, United States at a glance
As of Sep 29, 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 54 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 professional services networks, 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 “professional services networks”. 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 professional services networks), 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 professional services networks, 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, 768 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 29, 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.
Professional services networks by metro in the United States
- Professional services networks in New York137
- Professional services networks in Chicago63
- Professional services networks in Los Angeles51
- Professional services networks in Atlanta47
- Professional services networks in Miami44
- Professional services networks in Dallas32
- Professional services networks in San Diego31
- Professional services networks in San Francisco29
- Professional services networks in Washington29
- Professional services networks in Irvine28
- Professional services networks in Austin27
- Professional services networks in Tampa25
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 professional services networks, 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 professional services networks are there based in Houston, United States?
RevenueBase identified 54 professional services networks 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?
Sirius Solutions, headquartered in Houston, tops this list with the largest team on record.
Which city in the United States has the most professional services networks?
New York leads the United States with 137 headquartered companies, followed by Chicago (63) and Houston (54).
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 768 verified decision-maker contacts tracked across these 54 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 29, 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.
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