Company lists · Data refreshed November 2026
Top 25 Ancillary services providers based in the United States
RevenueBase identified 645 company matches for ancillary services providers associated with the United States as of November 2026 and tracks 29,184 professional contacts across them, including 7,032 with verified work emails. New York is the largest hub.
This list covers company matches for ancillary services providers 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.
The 25 largest ancillary services providers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,531 contacts → | ||||
Exact match “Raising the Value of Facilities Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 3,100 contacts → | ||||
Exact match “HHS is a support service provider helping our customers build a better experience for the people they serve.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 2,546 contacts → | ||||
Exact match “ABM (NYSE: ABM) is a Fortune 500 company and leading provider of facility solutions with offices throughout the United States and various international locations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 863 contacts → | ||||
Exact match “Founded in 1991 by company President Joe Blackstone, Blackstone Consulting, Inc.(BCI) is a national and international service provider performing services in Environmental…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 836 contacts → | ||||
Exact match “Established in 1952 by Skip Marsden, Marsden Services is one of the largest privately-held facility services organizations in the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 813 contacts → | ||||
Exact match “From one-off projects to ongoing contracts, Kimco gets it done.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 667 contacts → | ||||
Exact match “Where Facility Excellence Meets Defense Standards Ready • Secure • Lean We serve operators who cannot afford a facility failure: defense primes, secure federal installations…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 525 contacts → | ||||
Exact match “TOTAL FACILITY SERVICES Headquartered in Chattanooga, Tennessee, ERMC is a leading multi-discipline facility service provider.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 502 contacts → | ||||
Exact match “ABOUT HES HES is a premier national provider of facilities management services focused 100% on educational institutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 391 contacts → | ||||
Exact match “Warehouse Direct is a family-owned and operated workplace solutions provider proudly serving businesses throughout Chicagoland and the Midwest.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 356 contacts → | ||||
Exact match “Triangle Services specializes in providing facility and equipment operations management, maintenance and support services specifically designed to meet our customers' needs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 263 contacts → | ||||
Exact match “Founded in 1962 and with a presence in 12 countries, including the United States, Grupo EULEN is a leader in providing services and innovative solutions to companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 254 contacts → | ||||
Exact match “NIKA delivers comprehensive services and solutions to support the full life cycle of facilities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 249 contacts → | ||||
Exact match “Founded in 1988 to provide and manage back-office and clerical support services to government and private companies, PRWT has continually expanded its business process solutions…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 223 contacts → | ||||
Exact match “OpenWorks is a national leader in facilities management, providing unparalleled quality and customer service through robust technology solutions and a proven network of elite…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 215 contacts → | ||||
Exact match “Our Mission: To be the most respected facilities services company in the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 214 contacts → | ||||
Exact match “A&B Business is a facilitator for businesses that understand value of efficiency and reliable service.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 204 contacts → | ||||
Exact match “King George specializing in general contracting and construction management, Base Operations Support (BOS) services, O&M, vehicles and equipment maintenance, call centers…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 183 contacts → | ||||
Exact match “National Management Resources is a contract facilities management services provider focused on maintaining pristine campus environments exclusively to the private education sector.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 156 contacts → | ||||
Exact match “ATC Transportation was founded in 1994 to provide equipment and real estate leasing administrative support services to brokerage and logistics businesses as well as companies…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 151 contacts → | ||||
Exact match “For more than 50 years, DMS Facility Services has partnered with commercial property owners and managers to create cleaner, safer, and higher-performing environments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 144 contacts → | ||||
Exact match “Vanguard Resources, Inc.(VRI) has been transforming facilities maintenance & management for more than three decades by integrating and streamlining the work that keeps operations…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 135 contacts → | ||||
Exact match “The Millard Group is a third-generation family owned business with a long history in commercial facility services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 131 contacts → | ||||
Exact match “CMI Management delivers top-tier government facilities services, offering innovative, reliable solutions that meet the evolving needs of federal clients across the country.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 130 contacts → | ||||
Exact match “GLC Business Services provides professional organizations with customer service focused on-site support.” Recorded in the RevenueBase company graph · Nov 6, 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 “ancillary services providers”. 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 645 ancillary services providers based in the United States
See the full list, filter by size, metro and specialty, and access 7,032 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Ancillary services providers based in the United States at a glance
As of Nov 6, 2026Companies by employee count
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 645 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 “ancillary services providers” 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 7,032 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.
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 “ancillary services providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many ancillary services providers are there based in the United States?
RevenueBase identified 645 company matches for ancillary services providers 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?
C&w Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most ancillary services providers?
New York leads with 20 company records, followed by Atlanta (19) and Houston (9).
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 7,032 professional contacts with verified work emails tracked across these 645 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.
Ready to reach these companies? Verified emails and direct dials for all 645 ancillary services providers based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Ancillary services providers by geography
- Ancillary services providers based in Sao Paulo, Brazil
- Ancillary services providers based in Madrid, Spain
- Ancillary services providers based in London, United Kingdom
- Ancillary services providers based in Australia
- Ancillary services providers based in Belgium
- Ancillary services providers based in Brazil
- Ancillary services providers based in Canada
- Ancillary services providers based in Chile
- Ancillary services providers based in France
- Ancillary services providers based in Germany
- Ancillary services providers based in India
- Ancillary services providers based in Italy
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Ancillary services providers based in Sao Paulo, Brazil
- Ancillary services providers based in Madrid, Spain
- Ancillary services providers based in London, United Kingdom
- Ancillary services providers based in Australia
- Ancillary services providers based in Belgium
- Ancillary services providers based in Brazil
Company intelligence · public preview
Top 25 ancillary services providers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 645 matching company records for ancillary services providers based in the United States, with 29,184 tracked contacts and 7,032 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: November 6, 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 ancillary services providers based in the United States
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 |  C&w Servicescwservices.comHQ: Needham, MA, United StatesReported employees: 10001+ | Needham, MA, United States | 10001+ | Exact match | 3,531 contacts → |
“Raising the Value of Facilities Services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Hhs, LLChhs1.comHQ: Dripping Springs, TX, United StatesReported employees: 10001+ | Dripping Springs, TX, United States | 10001+ | Exact match | 3,100 contacts → |
“HHS is a support service provider helping our customers build a better experience for the people they serve.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  GCA Services Groupabm.comHQ: NY, United StatesReported employees: 10001+ | NY, United States | 10001+ | Exact match | 2,546 contacts → |
“ABM (NYSE: ABM) is a Fortune 500 company and leading provider of facility solutions with offices throughout the United States and various international locations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Blackstone Consulting, INCblackstone-consulting.comHQ: Los Angeles, CA, United StatesReported employees: 5,001-10,000 | Los Angeles, CA, United States | 5,001-10,000 | Exact match | 863 contacts → |
“Founded in 1991 by company President Joe Blackstone, Blackstone Consulting, Inc.(BCI) is a national and international service provider performing services in Environmental…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Marsden Servicesmarsden.comHQ: St. Paul, MN, United StatesReported employees: 5,001-10,000 | St. Paul, MN, United States | 5,001-10,000 | Exact match | 836 contacts → |
“Established in 1952 by Skip Marsden, Marsden Services is one of the largest privately-held facility services organizations in the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Kimco Facility Services, LLCkimcoserv.comHQ: Atlanta, GA, United StatesReported employees: 5,001-10,000 | Atlanta, GA, United States | 5,001-10,000 | Exact match | 813 contacts → |
“From one-off projects to ongoing contracts, Kimco gets it done.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  IH Services, INCihservices.comHQ: Sebastian, FL, United StatesReported employees: 1,001-5,000 | Sebastian, FL, United States | 1,001-5,000 | Exact match | 667 contacts → |
“Where Facility Excellence Meets Defense Standards Ready • Secure • Lean We serve operators who cannot afford a facility failure: defense primes, secure federal installations…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  ERMCermc2.comHQ: Chattanooga, TN, United StatesReported employees: 1,001-5,000 | Chattanooga, TN, United States | 1,001-5,000 | Exact match | 525 contacts → |
“TOTAL FACILITY SERVICES Headquartered in Chattanooga, Tennessee, ERMC is a leading multi-discipline facility service provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  HES Facilities Managementhes.comHQ: Knoxville, TN, United StatesReported employees: 10001+ | Knoxville, TN, United States | 10001+ | Exact match | 502 contacts → |
“ABOUT HES HES is a premier national provider of facilities management services focused 100% on educational institutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Warehouse Direct Workplace Solutionswarehousedirect.comHQ: Des Plaines, IL, United StatesReported employees: 201-500 | Des Plaines, IL, United States | 201-500 | Exact match | 391 contacts → |
“Warehouse Direct is a family-owned and operated workplace solutions provider proudly serving businesses throughout Chicagoland and the Midwest.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Triangle Servicestriangleservices.comHQ: Fort Lauderdale, FL, United StatesReported employees: 1,001-5,000 | Fort Lauderdale, FL, United States | 1,001-5,000 | Exact match | 356 contacts → |
“Triangle Services specializes in providing facility and equipment operations management, maintenance and support services specifically designed to meet our customers' needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Grupo Eulen USAeulen.comHQ: Doral, MD, United StatesReported employees: 1,001-5,000 | Doral, MD, United States | 1,001-5,000 | Exact match | 263 contacts → |
“Founded in 1962 and with a presence in 12 countries, including the United States, Grupo EULEN is a leader in providing services and innovative solutions to companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Nika Technologies, INCnika.usHQ: North Bethesda, MD, United StatesReported employees: 201-500 | North Bethesda, MD, United States | 201-500 | Exact match | 254 contacts → |
“NIKA delivers comprehensive services and solutions to support the full life cycle of facilities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Prwt Services, INCprwt.comHQ: Philadelphia, PA, United StatesReported employees: 501-1,000 | Philadelphia, PA, United States | 501-1,000 | Exact match | 249 contacts → |
“Founded in 1988 to provide and manage back-office and clerical support services to government and private companies, PRWT has continually expanded its business process solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Openworks Facility Managementopenworksweb.comHQ: Phoenix, AZ, United StatesReported employees: 51-200 | Phoenix, AZ, United States | 51-200 | Exact match | 223 contacts → |
“OpenWorks is a national leader in facilities management, providing unparalleled quality and customer service through robust technology solutions and a proven network of elite…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Velociti Servicesvelocitiservices.comHQ: Atlanta, FL, United StatesReported employees: 1,001-5,000 | Atlanta, FL, United States | 1,001-5,000 | Exact match | 215 contacts → |
“Our Mission: To be the most respected facilities services company in the world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  A&b Business Solutionsabbusiness.comHQ: Sioux Falls, SD, United StatesReported employees: 51-200 | Sioux Falls, SD, United States | 51-200 | Exact match | 214 contacts → |
“A&B Business is a facilitator for businesses that understand value of efficiency and reliable service.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  King & George, LLCkinggeorge.usHQ: Fort Worth, TX, United StatesReported employees: 1,001-5,000 | Fort Worth, TX, United States | 1,001-5,000 | Exact match | 204 contacts → |
“King George specializing in general contracting and construction management, Base Operations Support (BOS) services, O&M, vehicles and equipment maintenance, call centers…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 183 contacts → |
“National Management Resources is a contract facilities management services provider focused on maintaining pristine campus environments exclusively to the private education sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  ATC Transportationatctransportation.comHQ: Pleasant Prairie, WI, United StatesReported employees: 51-200 | Pleasant Prairie, WI, United States | 51-200 | Exact match | 156 contacts → |
“ATC Transportation was founded in 1994 to provide equipment and real estate leasing administrative support services to brokerage and logistics businesses as well as companies…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  DMS Facility Servicesdmsfacilityservices.comHQ: South Pasadena, CA, United StatesReported employees: 1,001-5,000 | South Pasadena, CA, United States | 1,001-5,000 | Exact match | 151 contacts → |
“For more than 50 years, DMS Facility Services has partnered with commercial property owners and managers to create cleaner, safer, and higher-performing environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Vanguard Resources, INCvanguardresources.comHQ: Spring Branch, TX, United StatesReported employees: 501-1,000 | Spring Branch, TX, United States | 501-1,000 | Exact match | 144 contacts → |
“Vanguard Resources, Inc.(VRI) has been transforming facilities maintenance & management for more than three decades by integrating and streamlining the work that keeps operations…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  The Millard Group, INCmillardgroup.comHQ: Morton Grove, IL, United StatesReported employees: 1,001-5,000 | Morton Grove, IL, United States | 1,001-5,000 | Exact match | 135 contacts → |
“The Millard Group is a third-generation family owned business with a long history in commercial facility services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  CMI Managementcmimgmt.comHQ: Alexandria, VA, United StatesReported employees: 51-200 | Alexandria, VA, United States | 51-200 | Exact match | 131 contacts → |
“CMI Management delivers top-tier government facilities services, offering innovative, reliable solutions that meet the evolving needs of federal clients across the country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  GLC Business Servicesglcbs.comHQ: Rochester, NY, United StatesReported employees: 201-500 | Rochester, NY, United States | 201-500 | Exact match | 130 contacts → |
“GLC Business Services provides professional organizations with customer service focused on-site support.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 645 company matches
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Ancillary services providers: dataset insights
November 6, 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
642 records in the displayed employee bands.
3 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 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 645 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: November 6, 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 ↗
Questions about this company list
What does Exact match mean for ancillary services providers?
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 ancillary services providers did RevenueBase find based in the United States?
The saved snapshot records 645 matching company records, 29,184 tracked contacts and 7,032 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: November 6, 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
Ancillary services providers by geography
- Ancillary services providers based in Sao Paulo, Brazil
- Ancillary services providers based in Madrid, Spain
- Ancillary services providers based in London, United Kingdom
- Ancillary services providers based in Australia
- Ancillary services providers based in Belgium
- Ancillary services providers based in Brazil
- Ancillary services providers based in Canada
- Ancillary services providers based in Chile
- Ancillary services providers based in France
- Ancillary services providers based in Germany
- Ancillary services providers based in India
- Ancillary services providers based in Italy
Cite this list
RevenueBase Data Team. Top 25 ancillary services providers based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/ancillary-services-providers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Ancillary services providers based in Sao Paulo, Brazil
- Ancillary services providers based in Madrid, Spain
- Ancillary services providers based in London, United Kingdom
- Ancillary services providers based in Australia
- Ancillary services providers based in Belgium
- Ancillary services providers based in Brazil
Company intelligence · public preview
Top 25 ancillary services providers based in the United States
RevenueBase records 645 matching company records for ancillary services providers based in the United States, with 29,184 tracked contacts and 7,032 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: November 6, 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 ancillary services providers based in the United States
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 | C&w Servicescwservices.com HQ: Needham, MA, United StatesReported employees: 10001+ | Needham, MA, United States | 10001+ | Exact match | 3,531 contacts → |
“Raising the Value of Facilities Services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Hhs, LLChhs1.com HQ: Dripping Springs, TX, United StatesReported employees: 10001+ | Dripping Springs, TX, United States | 10001+ | Exact match | 3,100 contacts → |
“HHS is a support service provider helping our customers build a better experience for the people they serve.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | GCA Services Groupabm.com HQ: NY, United StatesReported employees: 10001+ | NY, United States | 10001+ | Exact match | 2,546 contacts → |
“ABM (NYSE: ABM) is a Fortune 500 company and leading provider of facility solutions with offices throughout the United States and various international locations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Blackstone Consulting, INCblackstone-consulting.com HQ: Los Angeles, CA, United StatesReported employees: 5,001-10,000 | Los Angeles, CA, United States | 5,001-10,000 | Exact match | 863 contacts → |
“Founded in 1991 by company President Joe Blackstone, Blackstone Consulting, Inc.(BCI) is a national and international service provider performing services in Environmental…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Marsden Servicesmarsden.com HQ: St. Paul, MN, United StatesReported employees: 5,001-10,000 | St. Paul, MN, United States | 5,001-10,000 | Exact match | 836 contacts → |
“Established in 1952 by Skip Marsden, Marsden Services is one of the largest privately-held facility services organizations in the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Kimco Facility Services, LLCkimcoserv.com HQ: Atlanta, GA, United StatesReported employees: 5,001-10,000 | Atlanta, GA, United States | 5,001-10,000 | Exact match | 813 contacts → |
“From one-off projects to ongoing contracts, Kimco gets it done.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | IH Services, INCihservices.com HQ: Sebastian, FL, United StatesReported employees: 1,001-5,000 | Sebastian, FL, United States | 1,001-5,000 | Exact match | 667 contacts → |
“Where Facility Excellence Meets Defense Standards Ready • Secure • Lean We serve operators who cannot afford a facility failure: defense primes, secure federal installations…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | ERMCermc2.com HQ: Chattanooga, TN, United StatesReported employees: 1,001-5,000 | Chattanooga, TN, United States | 1,001-5,000 | Exact match | 525 contacts → |
“TOTAL FACILITY SERVICES Headquartered in Chattanooga, Tennessee, ERMC is a leading multi-discipline facility service provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HES Facilities Managementhes.com HQ: Knoxville, TN, United StatesReported employees: 10001+ | Knoxville, TN, United States | 10001+ | Exact match | 502 contacts → |
“ABOUT HES HES is a premier national provider of facilities management services focused 100% on educational institutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Warehouse Direct Workplace Solutionswarehousedirect.com HQ: Des Plaines, IL, United StatesReported employees: 201-500 | Des Plaines, IL, United States | 201-500 | Exact match | 391 contacts → |
“Warehouse Direct is a family-owned and operated workplace solutions provider proudly serving businesses throughout Chicagoland and the Midwest.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Triangle Servicestriangleservices.com HQ: Fort Lauderdale, FL, United StatesReported employees: 1,001-5,000 | Fort Lauderdale, FL, United States | 1,001-5,000 | Exact match | 356 contacts → |
“Triangle Services specializes in providing facility and equipment operations management, maintenance and support services specifically designed to meet our customers' needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Grupo Eulen USAeulen.com HQ: Doral, MD, United StatesReported employees: 1,001-5,000 | Doral, MD, United States | 1,001-5,000 | Exact match | 263 contacts → |
“Founded in 1962 and with a presence in 12 countries, including the United States, Grupo EULEN is a leader in providing services and innovative solutions to companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Nika Technologies, INCnika.us HQ: North Bethesda, MD, United StatesReported employees: 201-500 | North Bethesda, MD, United States | 201-500 | Exact match | 254 contacts → |
“NIKA delivers comprehensive services and solutions to support the full life cycle of facilities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Prwt Services, INCprwt.com HQ: Philadelphia, PA, United StatesReported employees: 501-1,000 | Philadelphia, PA, United States | 501-1,000 | Exact match | 249 contacts → |
“Founded in 1988 to provide and manage back-office and clerical support services to government and private companies, PRWT has continually expanded its business process solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Openworks Facility Managementopenworksweb.com HQ: Phoenix, AZ, United StatesReported employees: 51-200 | Phoenix, AZ, United States | 51-200 | Exact match | 223 contacts → |
“OpenWorks is a national leader in facilities management, providing unparalleled quality and customer service through robust technology solutions and a proven network of elite…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Velociti Servicesvelocitiservices.com HQ: Atlanta, FL, United StatesReported employees: 1,001-5,000 | Atlanta, FL, United States | 1,001-5,000 | Exact match | 215 contacts → |
“Our Mission: To be the most respected facilities services company in the world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | A&b Business Solutionsabbusiness.com HQ: Sioux Falls, SD, United StatesReported employees: 51-200 | Sioux Falls, SD, United States | 51-200 | Exact match | 214 contacts → |
“A&B Business is a facilitator for businesses that understand value of efficiency and reliable service.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | King & George, LLCkinggeorge.us HQ: Fort Worth, TX, United StatesReported employees: 1,001-5,000 | Fort Worth, TX, United States | 1,001-5,000 | Exact match | 204 contacts → |
“King George specializing in general contracting and construction management, Base Operations Support (BOS) services, O&M, vehicles and equipment maintenance, call centers…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 183 contacts → |
“National Management Resources is a contract facilities management services provider focused on maintaining pristine campus environments exclusively to the private education sector.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | ATC Transportationatctransportation.com HQ: Pleasant Prairie, WI, United StatesReported employees: 51-200 | Pleasant Prairie, WI, United States | 51-200 | Exact match | 156 contacts → |
“ATC Transportation was founded in 1994 to provide equipment and real estate leasing administrative support services to brokerage and logistics businesses as well as companies…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | DMS Facility Servicesdmsfacilityservices.com HQ: South Pasadena, CA, United StatesReported employees: 1,001-5,000 | South Pasadena, CA, United States | 1,001-5,000 | Exact match | 151 contacts → |
“For more than 50 years, DMS Facility Services has partnered with commercial property owners and managers to create cleaner, safer, and higher-performing environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Vanguard Resources, INCvanguardresources.com HQ: Spring Branch, TX, United StatesReported employees: 501-1,000 | Spring Branch, TX, United States | 501-1,000 | Exact match | 144 contacts → |
“Vanguard Resources, Inc.(VRI) has been transforming facilities maintenance & management for more than three decades by integrating and streamlining the work that keeps operations…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | The Millard Group, INCmillardgroup.com HQ: Morton Grove, IL, United StatesReported employees: 1,001-5,000 | Morton Grove, IL, United States | 1,001-5,000 | Exact match | 135 contacts → |
“The Millard Group is a third-generation family owned business with a long history in commercial facility services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | CMI Managementcmimgmt.com HQ: Alexandria, VA, United StatesReported employees: 51-200 | Alexandria, VA, United States | 51-200 | Exact match | 131 contacts → |
“CMI Management delivers top-tier government facilities services, offering innovative, reliable solutions that meet the evolving needs of federal clients across the country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | GLC Business Servicesglcbs.com HQ: Rochester, NY, United StatesReported employees: 201-500 | Rochester, NY, United States | 201-500 | Exact match | 130 contacts → |
“GLC Business Services provides professional organizations with customer service focused on-site support.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 645 company matches
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Ancillary services providers: dataset insights
November 6, 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
642 records in the displayed employee bands.
3 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 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 645 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: November 6, 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 ↗
Questions about this company list
What does Exact match mean for ancillary services providers?
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 ancillary services providers did RevenueBase find based in the United States?
The saved snapshot records 645 matching company records, 29,184 tracked contacts and 7,032 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: November 6, 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
Ancillary services providers by geography
- Ancillary services providers based in Sao Paulo, Brazil
- Ancillary services providers based in Madrid, Spain
- Ancillary services providers based in London, United Kingdom
- Ancillary services providers based in Australia
- Ancillary services providers based in Belgium
- Ancillary services providers based in Brazil
- Ancillary services providers based in Canada
- Ancillary services providers based in Chile
- Ancillary services providers based in France
- Ancillary services providers based in Germany
- Ancillary services providers based in India
- Ancillary services providers based in Italy
Cite this list
RevenueBase Data Team. Top 25 ancillary services providers based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/ancillary-services-providers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Ancillary services providers based in Sao Paulo, Brazil
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- Ancillary services providers based in London, United Kingdom
- Ancillary services providers based in Australia
- Ancillary services providers based in Belgium
- Ancillary services providers based in Brazil