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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,981 companies indexed · Last updated: today
DirectoryCivil Engineering

Civil Engineering

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IndustryConstruction & ArchitectureIndustryCivil Engineering
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2'482 companies found

Caviezel Canalizzazioni SA Logo

Caviezel Canalizzazioni SA 

Quartino · Since 1993

The core activity of Caviezel Canalizzazioni SA is the provision of services in the field of wastewater and sewer cleaning, maintenance and rehabilitation. This includes in particular: inspections of wastewater pipes and sewer systems using camera technology; rehabilitation and renovation of wastewater pipes and sewer systems using various methods such as liner technology, spray liner technology and robot-assisted rehabilitation; maintenance and cleaning of wastewater pipes and sewer systems, including the unblocking of drains; testing the tightness of wastewater pipes and sewer systems; and the construction and maintenance of wastewater pipes and sewer systems. The company offers these services to private and commercial customers, covering an important part of the infrastructure for wastewater disposal.

Civil Engineering
View profile4.7(70)
Lötscher Tiefbau AG Logo

Lötscher Tiefbau AG 

Lucerne · Since 1958

The company's core activity is the construction and maintenance of infrastructure projects, particularly in the areas of civil engineering, road construction, earthworks and demolition. This includes, among other things: road construction, sewer and pipeline construction, sports field construction, engineering deep foundation work, pavement construction, hydraulic engineering, environmental work, and earthworks (excavation technology, soil stabilization, landfill and soil improvement, contaminated site remediation, demolition). The company offers these services as a full-service provider and focuses on the planning, execution and maintenance of infrastructure projects.

Civil EngineeringSite PreparationSports Facility Construction
View profile4.5(60)
Alder Bau AG Logo

Alder Bau AG 

Herisau · Since 1965

Alder Bau AG provides construction services such as demolition, hazardous-material removal, earthworks and civil engineering; it also offers transport services (heavy and material transport, container services) and waste disposal and recycling via a disposal yard.

Civil Engineering
View profile4.7(59)
Richi Bau AG Logo

Richi Bau AG 

Weiningen Zh · Since 2016

Richi Bau AG provides excavation, demolition and contaminated-site services and supplies construction materials such as aggregate, concrete and containers. The website also lists recycling and waste-management services, crane and special-transport capabilities, and a biomass power plant for heat and electricity production.

Civil Engineering
View profile4.1(59)
Esslinger AG Logo

Esslinger AG 

Zurich · Since 1977

The core activity of Esslinger AG is civil engineering, particularly the execution of construction projects in the areas of water supply, sewer and shaft connections, district heating connections and other construction-related services.

Civil Engineering
View profile4.7(54)
Hans Grieder AG, Aushub und Tiefbau Logo

Hans Grieder AG, Aushub und Tiefbau 

Tecknau · Since 1980

The core activities of Hans Grieder AG include the following areas: Civil Engineering: Execution of construction projects in the field of civil engineering, including small works and large contracts. Skip Service: Rental of skips in various sizes for environmentally friendly disposal of materials. Environmental Works: Execution of works in the field of environmental design, including gardening and natural stone processing. Waste Disposal: Disposal of waste, including sorting and recycling. Demolition: Demolition of objects, including preparation of materials for reuse. The company offers these services to private and business customers and emphasizes quality, experience, and competitive prices.

Civil EngineeringSite PreparationWaste Management Industry
View profile4.8(52)
Toni Seiler Baugeschäft AG Logo

Toni Seiler Baugeschäft AG 

Oberwil Bl · Since 2024

The core activity of Toni Seiler Baugeschäft AG is the provision of services in the field of building construction, civil engineering and environmental design, including: Building construction: extensions, renovations, conversions, additions, concrete work, swimming pool and pool construction; Civil engineering: road construction, pipeline construction, utility lines, sewerage, trenching, water pipe rupture, directional drilling; Environmental design: design of seating areas, terraces, forecourts, natural stone work, garden swimming pools; Customer masonry: conversions, renovations, wall demolition, steel beams, CFRP laminates for bathroom and kitchen. The company thus offers comprehensive services for construction projects from planning to execution.

Building ConstructionBuilding MaintenanceCivil Engineering
View profile5(52)
Schenk AG Heldswil Logo

Schenk AG Heldswil 

Heldswil · Since 1989

The core activity of Schenk AG Heldswil encompasses a wide range of services in the construction and infrastructure sector, particularly: drilling, civil engineering, road construction, pipeline construction, mechanical engineering, location services, planning and surveying, and pipe bursting. The company thus provides comprehensive solutions for construction projects, from planning and surveying to the execution and maintenance of infrastructure projects.

Civil EngineeringSite Preparation
View profile4.7(51)
Keller-Frei AG Logo

Keller-Frei AG 

Wallisellen · Since 2012

Keller-Frei AG is a construction company performing road and civil engineering works. Its services include building and maintaining roads, utility and drainage infrastructure, surface paving and public squares, and maintenance, repair and renovation of existing infrastructure.

Civil Engineering
View profile3.9(48)
Probatech Constructions SA Logo

Probatech Constructions SA 

Grolley · Since 1995

Probatech Constructions SA is a construction company acting as a general contractor, providing masonry, concrete and reinforced concrete works as well as civil engineering services. Its services also include earthworks and excavation, exterior landscaping, renovation and demolition.

Civil EngineeringGeneral Contractors
View profile3.7(46)
STOCKER Mulden+Kipper Transport AG Logo

STOCKER Mulden+Kipper Transport AG 

Gebenstorf · Since 2010

The core activity of Stocker Tiefbau encompasses civil engineering and construction services, particularly: excavation and foundation pit closures, road construction and cleaning, demolition and renaturation, environmental design and landscaping, as well as excavation and transportation services. Thus, the company offers a wide range of services in the field of civil engineering and construction.

Civil Engineering
View profile3.9(45)
Imhof Bau AG Logo

Imhof Bau AG 

Kreuzlingen · Since 2018

Imhof Bau AG is a construction and services company providing earthworks, specialized civil engineering and demolition services. The company also offers transport and site logistics as well as waste-management and environmental services, including disposal centres and processing of mineral materials.

Civil Engineering
View profile4.6(41)
Imhof Bau AG Logo

Imhof Bau AG 

Stein Am Rhein · Since 2010

Imhof Bau AG provides transport, construction and waste-management services, along with environmental and resource solutions. Its offerings include earthworks, demolition, site logistics, crane and special transports, operation of waste disposal centres and material recovery services.

Civil Engineering
View profile4.6(41)
Gysin Immobilien AG Logo

Gysin Immobilien AG 

Hölstein · Since 1987

Civil EngineeringGeneral Contractors
View profile4.6(34)
Gysin Tiefbau AG Logo

Gysin Tiefbau AG 

Hölstein · Since 2010

Civil Engineering
View profile4.6(34)
solHaus AG Logo

solHaus AG 

Lohn-Ammannsegg · Since 2013

The core activity of solHaus AG is the planning and execution of construction projects, including architecture, construction management and real estate management.

Building ConstructionBuilding MaintenanceCivil Engineering
View profile4.9(32)
Canalotop Sàrl Logo

Canalotop Sàrl 

Grandson · Since 2018

The core activity of Canalotop Sàrl is to provide services in the field of sewerage and drainage, specifically: * Emergency unblocking (emergency service for clogged sewers) * Sewer cleaning * Inspection and detection of sewers (using cameras) * Regular maintenance of sewers * Preventive checks of sewers * Tightness tests The company offers these services to private and commercial customers in the Lausanne, Yverdon, Grandson, Nord Vaudois, Neuchâtel and surrounding areas.

Civil Engineering
View profile4.4(31)
Früh Tiefbau GmbH Logo

Früh Tiefbau GmbH 

Krummenau · Since 2000

Früh Tiefbau GmbH provides civil engineering and earthworks services as an independent small contractor. Its offerings include installation of underground utilities, spring capture, excavation, construction of small access roads, landscaping and garden works, interlocking stone surfaces, demolition and renovation work.

Building MaintenanceCivil EngineeringSite Preparation
View profile4.8(31)
Gebr. Jetzer Hoch- und Tiefbau AG Logo

Gebr. Jetzer Hoch- und Tiefbau AG 

Schnottwil · Since 1996

The core activity of Gebr. Jetzer AG encompasses various services in the construction sector, particularly: earthworks, road construction, pipeline and drainage construction, hydraulic engineering, water supply, transportation and muck-away services, excavator taxi and suction excavator services. Thus, the company offers a wide range of services in the fields of civil engineering and construction.

Building ConstructionBuilding MaintenanceCivil Engineering
View profile4.5(31)
Epiney Construction SA Logo

Epiney Construction SA 

Sierre · Since 2012

The core activity of Epiney Construction SA is the provision of services in the field of construction and engineering, particularly in the areas of: civil engineering (e.g. road construction, bridge construction, sewerage), building construction, and special works. The company offers a wide range of services, including planning, execution and management of construction projects, with a focus on quality, safety, scheduling and cost planning, as well as sustainability.

Building ConstructionCivil EngineeringSite Preparation
View profile4.5(30)
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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.
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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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