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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
DirectoryCivil Engineering

Civil Engineering

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IndustryConstruction & ArchitectureIndustryCivil Engineering
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Matching companies

2'496 companies found

Hydrounit Netzbau AG Logo

Hydrounit Netzbau AG 

Baar · Since 2006

Hydrounit Netzbau AG provides network construction and infrastructure services, including planning and project engineering for communication and power transmission networks, civil works (excavation, road construction, demolition), cable installation, splicing and connection technology, measurement services and maintenance with 24/7 fault response.

Building ConstructionCivil Engineering
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imBau-Solutions GmbH Logo

imBau-Solutions GmbH 

Urdorf · Since 2023

The core activity of imBau-Solutions GmbH is construction management and site supervision in Switzerland, particularly in road construction and civil engineering. The company offers services such as precise coordination and successful implementation of construction projects, monitoring of construction activities, ensuring compliance with schedules and budgets, contract control and ensuring contractual work execution.

Building ConstructionCivil EngineeringMasonry Work
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Imgrüth Bau AG Logo

Imgrüth Bau AG 

Weggis · Since 2012

The core activity of Imgrüth Bau AG is the execution of construction projects, particularly in the areas of new buildings, conversions, renovations and environmental works.

Building ConstructionBuilding MaintenanceCivil Engineering
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IMPRESA BOGANA FRANCESCO SAGL Logo

IMPRESA BOGANA FRANCESCO SAGL 

Arvigo · Since 2001

IMPRESA BOGANA FRANCESCO SAGL is a construction firm offering roofing, timber-frame houses and general contracting services. The company carries out renovation of rural stone and timber buildings, provides feasibility studies and project design, and sells properties and land directly.

Building ConstructionCivil EngineeringGeneral Contractors
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Impresa Costruzioni Walter Sassi Logo

Impresa Costruzioni Walter Sassi 

Sonvico · Since 1986

Impresa Costruzioni Walter Sassi is a construction company that carries out new-builds and renovations and provides services including stonework, water-related works, paving, excavation and demolition, as well as substructure and roofing works.

Building ConstructionCivil EngineeringSite Preparation
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Impresa Luigi Notari (Suisse) SA Logo

Impresa Luigi Notari (Suisse) SA 

Bellinzona · Since 2011

Impresa Luigi Notari (Suisse) SA is a construction company that carries out civil and industrial works, road works, railway works, dams and hydraulic projects, as well as foundations and ground consolidation. The company holds certifications to UNI EN ISO 9001:2015, UNI EN ISO 14001:2015 and BS OHSAS 18001:2007 issued by an accredited certifier (ICMQ).

Civil Engineering
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Industrie Chimiche Riunite SA Logo

Industrie Chimiche Riunite SA 

Chiasso · Since 1929

Industrie Chimiche Riunite SA provides road surfacing and flat-roof waterproofing services. Its offerings include bituminous/asphalt pavements, block paving and substructure and maintenance works, as well as waterproofing with polymer-modified bituminous membranes and thermal insulation using materials such as FOAMGLAS, polyurethane and polystyrene.

Civil Engineering
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inexo infra ag Logo

inexo infra ag 

Schaffhausen · Since 1995

inexo infra ag is an engineering and planning firm providing infrastructure and civil engineering services, including road and utility construction. Its services include surveying, spatial planning, fire protection, utility registers and GEP/GWP.

Civil Engineering
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Infanger Alexander GmbH Logo

Infanger Alexander GmbH 

Wolfenschiessen · Since 2012

The core activity of Infanger Alexander GmbH is the execution of environmental and excavation work, as well as agricultural services and transportation. This includes, among other things, civil engineering, horticulture, customer masonry work and the use of machines for various tasks such as the construction of garden seating areas, parking lots and house driveways.

Civil EngineeringHorticulture & LandscapingSite Preparation
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Infinian AG Logo

Infinian AG 

Zurich · Since 2021

Infinian AG provides fiber‑optic solutions and technical services for the planning, installation and testing of fiber networks. Services include acquisition/site visits, civil works and cable pulling, measurement and testing, splicing and connection technology, and in‑building installations.

Civil EngineeringTelecommunications
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Infranext AG Logo

Infranext AG 

Kriens · Since 2021

The core activity of Infranext AG is the realization of infrastructure projects, particularly in road, rail and tunnel construction. This includes engineering services in the planning, tendering and implementation of projects, such as construction management, superstructure management, external project management and consulting services.

Building ConstructionCivil Engineering
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Infra Services et Ingénierie SA Logo

Infra Services et Ingénierie SA 

Marin-Epagnier · Since 2003

Infra Services et Ingénierie SA carries out construction and rehabilitation of underground structures, performs specialized civil-engineering works, conducts geotechnical surveys, and executes rope-access and other high-access operations for difficult-to-reach sites.

Civil EngineeringCivil Engineering Firms
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infraset gmbh Logo

infraset gmbh 

Bern · Since 2011

The core activity of Infraset GmbH is the planning and implementation of infrastructure construction projects in Switzerland.

Civil Engineering
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infratest GmbH Logo

infratest GmbH 

Zurich · Since 2008

The core activity of Infratest is the networked inspection of buildings, particularly in the areas of bridge construction, civil engineering, structural engineering and underground parking garages. The company offers services in these areas and has an experienced team of civil engineers and other specialists.

Civil Engineering
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ING PLUS.ch AG Logo

ING PLUS.ch AG 

Winterthur · Since 2000

The core activity of ING PLUS is the provision of services in the field of surveying, building surveying, evidence securing and civil engineering.

Civil Engineering
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InnovaTief Bauplanung AG Logo

InnovaTief Bauplanung AG 

Steinhausen · Since 2020

The core activity of InnovaTief Bauplanung AG is the planning and execution of civil engineering works, particularly in the field of road construction, using environmentally friendly and sustainable resources.

Civil Engineering
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Inrag AG Logo

Inrag AG 

Muttenz · Since 1983

The core activity of INRAG AG includes the planning, development and implementation of solutions for industrial process automation, particularly in the areas of: * MSR/Automation (measurement, control and regulation technology) * Engineering (planning of plants and plant components) * Industrial pumps (pumps for various media) * Galvanic pipe separation (solutions and applications for corrosion protection of pipelines) * H2/Gas analytics (analysis of gases, especially hydrogen) The company also offers services in the field of system integration, particularly for the areas of pipeline and apparatus construction, tank farm construction and accessories.

Civil Engineering
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Ischbau AG Logo

Ischbau AG 

Aetigkofen · Since 2018

Building ConstructionCivil Engineering
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Isotech (Genève) SA Logo

Isotech (Genève) SA 

Grand-Lancy · Since 2000

The core activity of ISOTECH Genève SA is the provision of services in the field of etanchéité, i.e. the sealing and tightness of buildings and facilities. The company has been offering its services for 50 years and has already worked for renowned clients such as UBS, Rolex, UEFA and Geneva Airport.

Building ConstructionBuilding MaintenanceCivil Engineering
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Ivan Steiner, Bauunternehmung Logo

Ivan Steiner, Bauunternehmung 

Flumenthal · Since 1998

Ivan Steiner, Bauunternehmung provides construction services including building construction, civil engineering, renovations and conversions, landscaping and planning.

Building ConstructionBuilding MaintenanceCivil Engineering
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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?
The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.
How do keywords work?
Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.
What belongs in the postal code field?
A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.
Per page
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How is organisation size determined?
Size reflects the number of employees and is calculated from publicly available information by a model developed in-house. It is a best-possible estimate, not an official figure.
What does the Verified label mean?
Verified means the entry is tied to a UID (Swiss business identification number) and therefore links back to the official Swiss business register. The label speaks to the company's identity — it is not a rating of its performance.

Source: Federal Statistical Office, UID register

How do I sort the results?
Use the dropdown above the list: Relevance, Name (A–Z), Best rating, Most reviews or Longest established. You can also switch between list and map view and set how many results appear per page.
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