Company lists · Data refreshed November 2026

Top 25 Permit compliance consultants based in the United States

RevenueBase identified 697 company matches for permit compliance consultants associated with the United States as of November 2026 and tracks 7,468 professional contacts across them, including 3,753 with verified work emails. Houston is the largest hub.

This list covers company matches for permit compliance consultants associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
697Companies
7,468Contacts tracked
3,753Verified emails
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The 25 largest permit compliance consultants based in the United States

Ranked by team size
Top 25 of 697 company matches for permit compliance consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWall Township, VA, United StatesHQ recorded Nov 6, 2026201-500470 contacts →

Exact match

“We are Groundwater & Environmental Services, Inc, better known as GES.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLancaster, PA, United StatesHQ recorded Nov 6, 2026201-500181 contacts →

Exact match

“We provide innovative compliance solutions by embracing complexity and making it simple.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchRocklin, CA, United StatesHQ recorded Nov 6, 202651-200175 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchElmhurst, IL, United StatesHQ recorded Nov 6, 202651-200165 contacts →

Exact match

“Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchDenver, WA, United StatesHQ recorded Nov 6, 2026201-500142 contacts →

Exact match

“Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchPhoenix, IL, United StatesHQ recorded Nov 6, 202651-200128 contacts →

Exact match

“America's #1 Stormwater Consultants Earthworks Environmental, LLC provides top of the line storm water pollution prevention (SWPP/NPDES), erosion control and dust control…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchCosta Mesa, CA, United StatesHQ recorded Nov 6, 202651-200109 contacts →

Exact match

“Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSan Juan Capistrano, CA, United StatesHQ recorded Nov 6, 202651-200106 contacts →

Exact match

“Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMaynard, MA, United StatesHQ recorded Nov 6, 202651-20085 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHouston, FL, United StatesHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“As a leader in the environmental compliance services industry, AARC does more than just meeting the needs of clients today.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-20075 contacts →

Exact match

“Building Code | Zoning | Approvals | Permits | Sign Offs | Building Compliance”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchFort Collins, WA, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“We deliver quality solutions with integrity and expertise, every time.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchOrlando, FL, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Based in Orlando, Florida, Bio-Tech Consulting (BTC) is a full-service environmental consulting firm with clients throughout Florida and the southeast.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchJacksonville, GA, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Environmental Services, Inc.(ESI) is a leading full service environmental consulting firm with national and international experience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchIrvine, CA, United StatesHQ recorded Nov 6, 202651-20072 contacts →

Exact match

“EPD was created to assist clients through the complex regulatory and interdisciplinary process required to bring projects to fruition in the most thoughtful manner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLakewood, ID, United StatesHQ recorded Nov 6, 202611-5070 contacts →

Exact match

“We are a team of consultants who specialize in natural resource and environmental assessment, planning, and permitting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchVienna, VA, United StatesHQ recorded Nov 6, 202651-20068 contacts →

Exact match

“Capital Edge is the largest consulting firm exclusively dedicated to government contractors and grant recipients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Nov 6, 202651-20065 contacts →

Exact match

“RCP is the regulatory compliance and risk management expert for pipelines, facilities, and terminal operations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAkron, OH, United StatesHQ recorded Nov 6, 202611-5064 contacts →

Exact match

“State and Federal Communications, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSomerset, NJ, United StatesHQ recorded Nov 6, 202611-5063 contacts →

Exact match

“Whitman is a full-service environmental, engineering, energy, waste management and EH & S compliance consulting firm with more than 37 years of professional experience.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchWinnie, TX, United StatesHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“Accent Compliance, LLC (Accent) is a Federally Certified Women- Owned Small Business (WOSB), Historically Underutilized Business (HUB), Disadvantage Business Enterprise (DBE) and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchChicago, IL, United StatesHQ recorded Nov 6, 202611-5058 contacts →

Exact match

“Carnow, Conibear & Assoc, Ltd.(Carnow Conibear), a minority-owned, woman-owned and veteran-owned business, was established in 1975.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchMckinney, TX, United StatesHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“Integrated Environmental Solutions, LLC.(IES) is a Small, Woman-Owned Business Enterprise with corporate headquarters centrally located in the Dallas/Fort Worth Metroplex in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchRockaway, United StatesHQ recorded Nov 6, 202611-5051 contacts →

Exact match

“EcolSciences, Inc, was founded in 1973 in response to the growing need for responsible environmental planning, as mandated by NEPA, The National Environmental Policy Act.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchHonolulu, HI, United StatesHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“We Are a Full-Service Environmental Consultancy.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 697 permit compliance consultants based in the United States

See the full list, filter by size, metro and specialty, and access 3,753 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Permit compliance consultants based in the United States at a glance

As of Nov 6, 2026
50.3%Verified-email coverage
10.7Average contacts per company
1-10Median size (employees)
3.7%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
455
11-50
187
51-200
43
201-500
6
501-1,000
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 697 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “permit compliance consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 3,753 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Permit compliance consultants by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “permit compliance consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many permit compliance consultants are there based in the United States?

RevenueBase identified 697 company matches for permit compliance consultants associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Groundwater & Environmental Services, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most permit compliance consultants?

Houston leads with 26 company records, followed by New York (13) and Tampa (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,753 professional contacts with verified work emails tracked across these 697 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.