Company lists · Data refreshed November 2026

Top 22 Underwater tunneling contractors based in Switzerland

RevenueBase identified 36 company matches for underwater tunneling contractors associated with Switzerland as of November 2026 and tracks 4,042 professional contacts across them, including 1,847 with verified work emails. Regensdorf is the largest hub.

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

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
36Companies
4,042Contacts tracked
1,847Verified emails
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The 22 largest underwater tunneling contractors based in Switzerland

Ranked by team size
Top 22 of 36 company matches for underwater tunneling contractors based in Switzerland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchOpfikon, SwitzerlandHQ recorded Nov 6, 20265,001-10,0003,279 contacts →

Exact match

“As Switzerland’s leading construction and real estate service provider, Implenia develops, builds and manages homes, workplaces and infrastructure for future generations in…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchAarau, SwitzerlandHQ recorded Nov 6, 202651-20078 contacts →

Exact match

“Bauunternehmung und Ingenieurbüro unter einem Dach Als einzige Schweizer Unternehmung verbinden wir seit 1918 Planung und Ausführung im Bauwesen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchStadtkreis 1 Altstadt, SwitzerlandHQ recorded Nov 6, 202651-20077 contacts →

Exact match

“In der Bearbeitung von interdisziplinären Grossprojekten bis zu kleinen «Eine-Person-Projekten» bietet Locher Ingenieure das ideale Umfeld.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMoosseedorf, SwitzerlandHQ recorded Nov 6, 2026501-1,00064 contacts →

Exact match

“WATERPROOFING Our specialized division for all kind of sealing ope­ra­ti­ons in under­ground struc­tures against pres­su­rized and non-pres­su­rized water.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchZurich, SwitzerlandHQ recorded Nov 6, 202651-20047 contacts →

Exact match

“Die ILF Schweiz ist ein Ingenieur- und Beratungsunternehmen und Teil der international tätigen ILF-Holding.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchTramelan, SwitzerlandHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“Le Groupe GVH est un groupement de bureaux d'ingénieurs offrant les prestations de conception, de réalisation d'ouvrage, et de conseils en matière technique dans le domaine du…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchPetit Lancy, SwitzerlandHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“Depuis 1969, le bureau zs ingénieurs civils est spécialisé dans la conception et réalisation de projets d’ingénierie civile.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchBiasca, SwitzerlandHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“Filippini & Partner Ingegneria SA è una società indipendente di ingegneria, fondata nel 1972 a Biasca (Ct.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLugano - Paradiso, SwitzerlandHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“KERN Tunneltechnik SA is an international company providing high-tech solutions for Tunnelling.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBasel, SwitzerlandHQ recorded Nov 6, 202611-509 contacts →

Exact match

“Als Spezialisten mit vielfältiger Erfahrung in noch so heiklen und komplexen Herausforderungen beraten wir Sie kompetent und individuell.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchWindisch, SwitzerlandHQ recorded Nov 6, 202611-508 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchBex, SwitzerlandHQ recorded Nov 6, 202611-508 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLangenthal, SwitzerlandHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Strassentunnel #Bahntunnel #BSA #Gewerke #Tunnelinfrastruktur #ICT #BSA-Stellen #hiring KLEINES INGENIEURBÜRO – GROSSES BSA-FACHWISSEN Mit Leidenschaft nehmen wir bei buntech jede…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchKriens, SwitzerlandHQ recorded Nov 6, 20261-106 contacts →

Exact match

“Infranext ist ein auf die Realisierung von Infrastrukturprojekten spezialisiertes Bauingenieurbüro.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSwitzerlandHQ recorded Nov 6, 2026201-5005 contacts →

Exact match

“F.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchUster, SwitzerlandHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Ihr Spezialist für den konstruktiven Wasserbau im, am und unter Wasser.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchBad Zurzach, SwitzerlandHQ recorded Nov 6, 202611-504 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLyss, SwitzerlandHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSion, SwitzerlandHQ recorded Nov 6, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWangen Sz, SwitzerlandHQ recorded Nov 6, 20261-102 contacts →

Exact match

“Rowa Tunnelling Logistics Engineering Tunnelbau Untertagebau Nachlaufinstallationen für Tunnelbohrmaschinen Tiefbau Sprengvortrieb Schrägschacht Logistiksysteme Logistikkonzepte…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLausanne, SwitzerlandHQ recorded Nov 6, 20261-101 contacts →

Exact match

“G.C.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchVorderthal, SwitzerlandHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Im Bereich des Tiefbaus können wir Ihnen ein 360° Angebot bieten.”

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

Showing 22 of 36 underwater tunneling contractors based in Switzerland

See the full list, filter by size, metro and specialty, and access 1,847 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Underwater tunneling contractors based in Switzerland at a glance

As of Nov 6, 2026
45.7%Verified-email coverage
112.3Average contacts per company
11-50Median size (employees)
8.3%Largest-city concentration · Regensdorf
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
17
11-50
8
51-200
7
201-500
2
501-1,000
1
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 36 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 Switzerland whose business descriptions match “underwater tunneling contractors” 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 1,847 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 “underwater tunneling contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many underwater tunneling contractors are there based in Switzerland?

RevenueBase identified 36 company matches for underwater tunneling contractors associated with Switzerland 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?

Implenia tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most underwater tunneling contractors?

Regensdorf leads with 3 company records, followed by Lausanne (2) and Bad Zurzach (1).

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 1,847 professional contacts with verified work emails tracked across these 36 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.