Company lists · Data refreshed September 2026
Top 25 Air permit engineering firms worldwide
RevenueBase identified 2,354 company matches for air permit engineering firms worldwide as of September 2026 and tracks 22,859 professional contacts across them, including 7,817 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers company matches for air permit engineering firms worldwide, 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 September 30, 2026. Country and city lists for air permit engineering firms follow the table.
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.
The 25 largest air permit engineering firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,145 contacts → | ||||
Exact match “Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 2 | 865 contacts → | ||||
Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 3 | 577 contacts → | ||||
Exact match “Headquartered in Laramie, Wyoming, Trihydro provides environmental consulting, engineering and surveying, air quality and process management, information technology, and water and…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 4 | 436 contacts → | ||||
Exact match “Desde 1974, a Heating & Cooling atua no segmento de engenharia de instalação de Sistemas de Ar-Condicionado, Ventilação e Exaustão Mecânica, com mais de 2.500 projetos executados.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 5 | 258 contacts → | ||||
Exact match “JVA, Incorporated is an employee-owned consulting engineering firm with offices in Boulder, Fort Collins, Winter Park, Glenwood Springs, and Denver, Colorado.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 6 | 166 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 7 | 165 contacts → | ||||
Exact match “The leader in environmental, health and safety compliance solutions.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 8 | 154 contacts → | ||||
Exact match “Since 1894, Verdantas Flow Labs (formerly Alden) has been a recognized leader in the field of applied fluid dynamic consulting.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 9 | 152 contacts → | ||||
Exact match “Since its founding in 1972, CleanAir has an established reputation for excellence on projects of all sizes, ranging from boiler, APC equipment and cooling tower efficiency testing…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 10 | 140 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 11 | 136 contacts → | ||||
Exact match “OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 12 | 108 contacts → | ||||
Exact match “Established in 1969, Skelly and Loy is a privately owned, mid-sized corporation with 6 Mid-Atlantic offices.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 13 | 106 contacts → | ||||
Exact match “Broadbent & Associates, Inc.(Broadbent) is an established environmental, water resources, and civil engineering firm.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 14 | 106 contacts → | ||||
Exact match “Since 2009, Nvira has established itself as a multidisciplinary environmental engineering consulting firm committed to delivering a distinctive client experience, providing…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 15 | 98 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 16 | 97 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 17 | 94 contacts → | ||||
Exact match “Aspen Environmental Group is an expert interdisciplinary environmental impact analysis firm, specializing in the management of environmental assessment efforts under CEQA, NEPA…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 18 | 92 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 · Sep 30, 2026 · View company records in RevenueBase | |||||
| 19 | 89 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 20 | 82 contacts → | ||||
Exact match “Engineering a Sustainable Future, One Project at a Time Founded in Israel in 1996, DHV MED has become a leader in environmental engineering and consulting.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 21 | 78 contacts → | ||||
Exact match “En PROTERM S.A.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 22 | 77 contacts → | ||||
Exact match “Professional Civil and Environmental Engineering Firm providing Technical Consulting Services to County Governments, Municipalities, Industry, School Districts, Healthcare…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 23 | 74 contacts → | ||||
Exact match “Énergie & Environnement, Génie climatique et électrique, Acoustique, Coordination SSI, Restauconception et Métrologie sont les thèmes sur lesquels SOLAB et ses 6 équipes d’experts…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 24 | 74 contacts → | ||||
Exact match “Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 25 | 70 contacts → | ||||
Exact match “We deliver quality solutions with integrity and expertise, every time.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “air permit engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 2,354 air permit engineering firms worldwide
See the full list, filter by size, metro and specialty, and access 7,817 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Air permit engineering firms worldwide at a glance
As of Sep 30, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for air permit engineering firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “air permit engineering firms” 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. 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 7,817 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 September 30, 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.
Air permit engineering firms by location
11 lists · largest firstEvery Air permit engineering firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Air permit engineering firms based in the United States810
- Air permit engineering firms based in Brazil229
- Air permit engineering firms based in Canada89
- Air permit engineering firms based in France83
- Air permit engineering firms based in Sweden82
- Air permit engineering firms based in India72
- Air permit engineering firms based in Italy68
- Air permit engineering firms based in Germany66
- Air permit engineering firms based in Chile51
- Air permit engineering firms based in the United Kingdom35
Cities
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 “air permit engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many air permit engineering firms are there worldwide?
RevenueBase identified 2,354 company matches for air permit engineering firms worldwide as of September 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?
Civil & Environmental Consultants, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most air permit engineering firms?
The United States leads with 810 companies, followed by Brazil (229) and Canada (89). Every air permit engineering firms list by country and city is linked on this page.
Which city has the most air permit engineering firms?
Sao Paulo leads with 35 company records, followed by Houston (30) and Calgary (13).
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 7,817 professional contacts with verified work emails tracked across these 2,354 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 September 30, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,354 air permit engineering firms worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 air permit engineering firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,354 matching company records for air permit engineering firms worldwide, with 22,859 tracked contacts and 7,817 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 air permit engineering firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Civil & Environmental Consultants, INCcecinc.comHQ: Moon Township, PA, United StatesReported employees: 1,001-5,000 | Moon Township, PA, United States | 1,001-5,000 | Exact match | 2,145 contacts → |
“Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  ATC Group Services LLConeatlas.comHQ: Lafayette, LA, United StatesReported employees: 1,001-5,000 | Lafayette, LA, United States | 1,001-5,000 | Exact match | 865 contacts → |
“ATC Group Services LLC is now Atlas.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Trihydro Corporationtrihydro.comHQ: Laramie, WY, United StatesReported employees: 501-1,000 | Laramie, WY, United States | 501-1,000 | Exact match | 577 contacts → |
“Headquartered in Laramie, Wyoming, Trihydro provides environmental consulting, engineering and surveying, air quality and process management, information technology, and water and…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Heating Coolingheatingcooling.com.brHQ: Sao Paulo, BrazilReported employees: 501-1,000 | Sao Paulo, Brazil | 501-1,000 | Exact match | 436 contacts → |
“Desde 1974, a Heating & Cooling atua no segmento de engenharia de instalação de Sistemas de Ar-Condicionado, Ventilação e Exaustão Mecânica, com mais de 2.500 projetos executados.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Jva, INCjvajva.comHQ: Boulder, CO, United StatesReported employees: 51-200 | Boulder, CO, United States | 51-200 | Exact match | 258 contacts → |
“JVA, Incorporated is an employee-owned consulting engineering firm with offices in Boulder, Fort Collins, Winter Park, Glenwood Springs, and Denver, Colorado.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Ecorp Consulting, INCecorpconsulting.comHQ: Rocklin, CA, United StatesReported employees: 51-200 | Rocklin, CA, United States | 51-200 | Exact match | 166 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 |  U.S. Compliance Environmental, Health & Safety Consultinguscompliance.comHQ: Excelsior, MN, IndiaReported employees: 51-200 | Excelsior, MN, India | 51-200 | Exact match | 165 contacts → |
“The leader in environmental, health and safety compliance solutions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Verdantas Flow Labsverdantas.comHQ: Holden, MA, United StatesReported employees: 51-200 | Holden, MA, United States | 51-200 | Exact match | 154 contacts → |
“Since 1894, Verdantas Flow Labs (formerly Alden) has been a recognized leader in the field of applied fluid dynamic consulting.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cleanair Engineeringcleanair.comHQ: Palatine, IL, United StatesReported employees: 51-200 | Palatine, IL, United States | 51-200 | Exact match | 152 contacts → |
“Since its founding in 1972, CleanAir has an established reputation for excellence on projects of all sizes, ranging from boiler, APC equipment and cooling tower efficiency testing…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Mostardi Plattmostardiplatt.comHQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 140 contacts → |
“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 description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Ensolum, LLCensolum.comHQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 136 contacts → |
“OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Skelly And Loy, Inc., A Terracon Companyskellyloy.comHQ: Harrisburg, PA, United StatesReported employees: 51-200 | Harrisburg, PA, United States | 51-200 | Exact match | 108 contacts → |
“Established in 1969, Skelly and Loy is a privately owned, mid-sized corporation with 6 Mid-Atlantic offices.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Broadbent & Associates, INCbroadbentinc.com HQ: Henderson, NV, United StatesReported employees: 51-200 | Henderson, NV, United States | 51-200 | Exact match | 106 contacts → |
“Broadbent & Associates, Inc.(Broadbent) is an established environmental, water resources, and civil engineering firm.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  NVIRAnvira.comHQ: Montréal, QC, CanadaReported employees: 51-200 | Montréal, QC, Canada | 51-200 | Exact match | 106 contacts → |
“Since 2009, Nvira has established itself as a multidisciplinary environmental engineering consulting firm committed to delivering a distinctive client experience, providing…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Chambers Group, INCchambersgroupinc.comHQ: Costa Mesa, CA, United StatesReported employees: 51-200 | Costa Mesa, CA, United States | 51-200 | Exact match | 98 contacts → |
“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 description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  A-Tech Consulting, INCatechinc.netHQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 97 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | Aspen Environmental Groupaspeneg.com HQ: Agoura Hills, CA, United StatesReported employees: 51-200 | Agoura Hills, CA, United States | 51-200 | Exact match | 94 contacts → |
“Aspen Environmental Group is an expert interdisciplinary environmental impact analysis firm, specializing in the management of environmental assessment efforts under CEQA, NEPA…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Yorke Engineering, LLCyorkeengr.comHQ: San Juan Capistrano, CA, United StatesReported employees: 51-200 | San Juan Capistrano, CA, United States | 51-200 | Exact match | 92 contacts → |
“Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  North Shore Environmental Consultants INCnorthshoreenv.comHQ: Sherwood Park, AB, CanadaReported employees: 51-200 | Sherwood Park, AB, Canada | 51-200 | Exact match | 89 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 |  Dhvmeddhvmed.comHQ: Kfar Saba, IsraelReported employees: 51-200 | Kfar Saba, Israel | 51-200 | Exact match | 82 contacts → |
“Engineering a Sustainable Future, One Project at a Time Founded in Israel in 1996, DHV MED has become a leader in environmental engineering and consulting.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Proterm S.Aproterm.clHQ: Concepción, ChileReported employees: 51-200 | Concepción, Chile | 51-200 | Exact match | 78 contacts → |
“En PROTERM S.A.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Alliance Consulting Engineers, INCalliancece.comHQ: Columbia, SC, United StatesReported employees: 11-50 | Columbia, SC, United States | 11-50 | Exact match | 77 contacts → |
“Professional Civil and Environmental Engineering Firm providing Technical Consulting Services to County Governments, Municipalities, Industry, School Districts, Healthcare…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  SOLABsolab.techHQ: Nantes, FranceReported employees: 51-200 | Nantes, France | 51-200 | Exact match | 74 contacts → |
“Énergie & Environnement, Génie climatique et électrique, Acoustique, Coordination SSI, Restauconception et Métrologie sont les thèmes sur lesquels SOLAB et ses 6 équipes d’experts…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Occupational Services, INCoccserv.comHQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 74 contacts → |
“Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Cgrs INCcgrs.comHQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 70 contacts → |
“We deliver quality solutions with integrity and expertise, every time.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,354 company matches
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Air permit engineering firms: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,346 records in the displayed employee bands.
8 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 2,354 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Air permit engineering firms by location
11 lists · largest firstEvery Air permit engineering firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Air permit engineering firms based in the United States810
- Air permit engineering firms based in Brazil229
- Air permit engineering firms based in Canada89
- Air permit engineering firms based in France83
- Air permit engineering firms based in Sweden82
- Air permit engineering firms based in India72
- Air permit engineering firms based in Italy68
- Air permit engineering firms based in Germany66
- Air permit engineering firms based in Chile51
- Air permit engineering firms based in the United Kingdom35
Cities
Questions about this company list
What does Exact match mean for air permit engineering firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many air permit engineering firms did RevenueBase find worldwide?
The saved snapshot records 2,354 matching company records, 22,859 tracked contacts and 7,817 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 air permit engineering firms worldwide. Snapshot: September 30, 2026. https://revenuebase.ai/companies/browse/air-permit-engineering-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 air permit engineering firms worldwide
RevenueBase records 2,354 matching company records for air permit engineering firms worldwide, with 22,859 tracked contacts and 7,817 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 air permit engineering firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Civil & Environmental Consultants, INCcecinc.com HQ: Moon Township, PA, United StatesReported employees: 1,001-5,000 | Moon Township, PA, United States | 1,001-5,000 | Exact match | 2,145 contacts → |
“Civil & Environmental Consultants, Inc.(CEC) provides comprehensive market-oriented consulting services that advance the strategic business objectives of its clients.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | ATC Group Services LLConeatlas.com HQ: Lafayette, LA, United StatesReported employees: 1,001-5,000 | Lafayette, LA, United States | 1,001-5,000 | Exact match | 865 contacts → |
“ATC Group Services LLC is now Atlas.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Trihydro Corporationtrihydro.com HQ: Laramie, WY, United StatesReported employees: 501-1,000 | Laramie, WY, United States | 501-1,000 | Exact match | 577 contacts → |
“Headquartered in Laramie, Wyoming, Trihydro provides environmental consulting, engineering and surveying, air quality and process management, information technology, and water and…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Heating Coolingheatingcooling.com.br HQ: Sao Paulo, BrazilReported employees: 501-1,000 | Sao Paulo, Brazil | 501-1,000 | Exact match | 436 contacts → |
“Desde 1974, a Heating & Cooling atua no segmento de engenharia de instalação de Sistemas de Ar-Condicionado, Ventilação e Exaustão Mecânica, com mais de 2.500 projetos executados.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Jva, INCjvajva.com HQ: Boulder, CO, United StatesReported employees: 51-200 | Boulder, CO, United States | 51-200 | Exact match | 258 contacts → |
“JVA, Incorporated is an employee-owned consulting engineering firm with offices in Boulder, Fort Collins, Winter Park, Glenwood Springs, and Denver, Colorado.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Ecorp Consulting, INCecorpconsulting.com HQ: Rocklin, CA, United StatesReported employees: 51-200 | Rocklin, CA, United States | 51-200 | Exact match | 166 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 7 | U.S. Compliance Environmental, Health & Safety Consultinguscompliance.com HQ: Excelsior, MN, IndiaReported employees: 51-200 | Excelsior, MN, India | 51-200 | Exact match | 165 contacts → |
“The leader in environmental, health and safety compliance solutions.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Verdantas Flow Labsverdantas.com HQ: Holden, MA, United StatesReported employees: 51-200 | Holden, MA, United States | 51-200 | Exact match | 154 contacts → |
“Since 1894, Verdantas Flow Labs (formerly Alden) has been a recognized leader in the field of applied fluid dynamic consulting.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cleanair Engineeringcleanair.com HQ: Palatine, IL, United StatesReported employees: 51-200 | Palatine, IL, United States | 51-200 | Exact match | 152 contacts → |
“Since its founding in 1972, CleanAir has an established reputation for excellence on projects of all sizes, ranging from boiler, APC equipment and cooling tower efficiency testing…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Mostardi Plattmostardiplatt.com HQ: Elmhurst, IL, United StatesReported employees: 51-200 | Elmhurst, IL, United States | 51-200 | Exact match | 140 contacts → |
“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 description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Ensolum, LLCensolum.com HQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 136 contacts → |
“OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Skelly And Loy, Inc., A Terracon Companyskellyloy.com HQ: Harrisburg, PA, United StatesReported employees: 51-200 | Harrisburg, PA, United States | 51-200 | Exact match | 108 contacts → |
“Established in 1969, Skelly and Loy is a privately owned, mid-sized corporation with 6 Mid-Atlantic offices.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Broadbent & Associates, INCbroadbentinc.com HQ: Henderson, NV, United StatesReported employees: 51-200 | Henderson, NV, United States | 51-200 | Exact match | 106 contacts → |
“Broadbent & Associates, Inc.(Broadbent) is an established environmental, water resources, and civil engineering firm.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | NVIRAnvira.com HQ: Montréal, QC, CanadaReported employees: 51-200 | Montréal, QC, Canada | 51-200 | Exact match | 106 contacts → |
“Since 2009, Nvira has established itself as a multidisciplinary environmental engineering consulting firm committed to delivering a distinctive client experience, providing…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Chambers Group, INCchambersgroupinc.com HQ: Costa Mesa, CA, United StatesReported employees: 51-200 | Costa Mesa, CA, United States | 51-200 | Exact match | 98 contacts → |
“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 description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | A-Tech Consulting, INCatechinc.net HQ: Orange, CA, United StatesReported employees: 51-200 | Orange, CA, United States | 51-200 | Exact match | 97 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | Aspen Environmental Groupaspeneg.com HQ: Agoura Hills, CA, United StatesReported employees: 51-200 | Agoura Hills, CA, United States | 51-200 | Exact match | 94 contacts → |
“Aspen Environmental Group is an expert interdisciplinary environmental impact analysis firm, specializing in the management of environmental assessment efforts under CEQA, NEPA…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Yorke Engineering, LLCyorkeengr.com HQ: San Juan Capistrano, CA, United StatesReported employees: 51-200 | San Juan Capistrano, CA, United States | 51-200 | Exact match | 92 contacts → |
“Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | North Shore Environmental Consultants INCnorthshoreenv.com HQ: Sherwood Park, AB, CanadaReported employees: 51-200 | Sherwood Park, AB, Canada | 51-200 | Exact match | 89 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Dhvmeddhvmed.com HQ: Kfar Saba, IsraelReported employees: 51-200 | Kfar Saba, Israel | 51-200 | Exact match | 82 contacts → |
“Engineering a Sustainable Future, One Project at a Time Founded in Israel in 1996, DHV MED has become a leader in environmental engineering and consulting.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Proterm S.Aproterm.cl HQ: Concepción, ChileReported employees: 51-200 | Concepción, Chile | 51-200 | Exact match | 78 contacts → |
“En PROTERM S.A.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Alliance Consulting Engineers, INCalliancece.com HQ: Columbia, SC, United StatesReported employees: 11-50 | Columbia, SC, United States | 11-50 | Exact match | 77 contacts → |
“Professional Civil and Environmental Engineering Firm providing Technical Consulting Services to County Governments, Municipalities, Industry, School Districts, Healthcare…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | SOLABsolab.tech HQ: Nantes, FranceReported employees: 51-200 | Nantes, France | 51-200 | Exact match | 74 contacts → |
“Énergie & Environnement, Génie climatique et électrique, Acoustique, Coordination SSI, Restauconception et Métrologie sont les thèmes sur lesquels SOLAB et ses 6 équipes d’experts…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Occupational Services, INCoccserv.com HQ: San Diego, CA, United StatesReported employees: 11-50 | San Diego, CA, United States | 11-50 | Exact match | 74 contacts → |
“Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Cgrs INCcgrs.com HQ: Fort Collins, CO, United StatesReported employees: 51-200 | Fort Collins, CO, United States | 51-200 | Exact match | 70 contacts → |
“We deliver quality solutions with integrity and expertise, every time.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Air permit engineering firms: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,346 records in the displayed employee bands.
8 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 2,354 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Air permit engineering firms by location
11 lists · largest firstEvery Air permit engineering firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Air permit engineering firms based in the United States810
- Air permit engineering firms based in Brazil229
- Air permit engineering firms based in Canada89
- Air permit engineering firms based in France83
- Air permit engineering firms based in Sweden82
- Air permit engineering firms based in India72
- Air permit engineering firms based in Italy68
- Air permit engineering firms based in Germany66
- Air permit engineering firms based in Chile51
- Air permit engineering firms based in the United Kingdom35
Cities
Questions about this company list
What does Exact match mean for air permit engineering firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many air permit engineering firms did RevenueBase find worldwide?
The saved snapshot records 2,354 matching company records, 22,859 tracked contacts and 7,817 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 air permit engineering firms worldwide. Snapshot: September 30, 2026. https://revenuebase.ai/companies/browse/air-permit-engineering-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗