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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,378 companies indexed · Last updated: today
DirectorySite Preparation

Site Preparation

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Matching companies

1'168 companies found

Fritz von Bergen AG, Bauunternehmung Logo

Fritz von Bergen AG, Bauunternehmung 

Hasliberg Hohfluh · Since 1999

The core activity of the company 'Fritz von Bergen AG' includes civil engineering and construction work, in particular: quarrying and operating gravel pits, blasting work, trench and road construction, hydraulic engineering, demolition and dismantling of buildings, earthmoving and excavation work, and transport and customer masonry services. The company also offers specialized services such as stone quarrying, excavation pits for construction projects, renaturation of streams and securing of construction pits.

Civil EngineeringSite PreparationMasonry Work
View profile5(1)
Fuchs Baggerarbeiten GmbH Logo

Fuchs Baggerarbeiten GmbH 

Brunnen · Since 2002

Fuchs Baggerarbeiten GmbH is a company specializing in walking-excavator (Schreitbagger) operations for earthworks in difficult-to-access terrain. Services include water/stream engineering and bank protection, pipeline installation, slope stabilization, special excavation, renaturation and garden construction.

Civil EngineeringSite PreparationMasonry Work
View profile5(1)
Gadient Arosa Immo AG Logo

Gadient Arosa Immo AG 

Arosa · Since 1980

Building ConstructionBuilding MaintenanceCivil Engineering
View profile4(1)
Fahrni UmBau GmbH Logo

Fahrni UmBau GmbH 

St. Ursen · Since 2007

The core activity of Gasser Bohrungen GmbH is the execution of drilling, milling and masonry work, in particular core drilling, as well as the rental of machines for these activities.

Building MaintenanceSite PreparationMasonry Work
View profile5(1)
Gebr. Kandlbauer AG Logo

Gebr. Kandlbauer AG 

Grindelwald · Since 2001

The core activity of Gebr. Kandlbauer AG is construction with a focus on civil engineering, hydraulic engineering, earthworks, excavation work, natural stone walls and blasting work.

Civil EngineeringSite Preparation
View profile5(1)
Gebrüder Bachmann AG, Baugeschäft, Uster Logo

Gebrüder Bachmann AG, Baugeschäft, Uster 

Uster · Since 1980

The core activity of Gebr. Bachmann AG encompasses the provision of construction services in various areas, particularly: Building construction: construction of private and public buildings, such as single-family homes, residential buildings, school buildings, and industrial buildings; Renovation: carrying out renovation and customer-specific masonry work; Civil engineering: creation of utility lines in the energy, water, and communication sectors, sewage systems, drainage systems, development and construction of public spaces; Scaffolding: construction of safe scaffolding for various purposes; Façade construction: renovation and redesign of façades with various materials; Drilling/Sawing: carrying out drilling and sawing work on concrete, reinforced concrete, and masonry. The company thus offers a wide range of construction services, from planning to execution.

Building ConstructionBuilding MaintenanceCivil Engineering
View profile5(1)
G. + M. Korrodi AG Logo

G. + M. Korrodi AG 

Bäretswil · Since 2008

The core activity of G. + M. Korrodi AG is specialized civil engineering, particularly in the Zurich Oberland region. This includes services such as road construction, pipeline construction, landscaping, excavation work, GMK system, slope stabilization, excavation pit securing, contaminated site remediation, pile foundation, winter maintenance, demolition and recycling, water construction and renaturation, neutralization plant and settling basin, as well as transportation and crane work.

Civil EngineeringHorticulture & LandscapingSite Preparation
View profile5(1)
Graf Demontage Logo

Graf Demontage 

Neuenhof · Since 2018

Graf Demontage provides demolition, deconstruction and recycling services. The company performs site demolition and material handling tasks and accepts quote requests via phone, email or the website contact form.

Site Preparation
View profile5(1)
Häfliger Bau AG Logo

Häfliger Bau AG 

Zell Lu · Since 2022

The core activity of Häfliger Bau AG is the planning and execution of construction projects, particularly in the areas of new buildings, renovations, agricultural buildings and environmental works. The company offers services such as construction management, project management, kitchen renovations, bathroom renovations and refurbishments, and realizes individual customer wishes in the field of construction.

Building ConstructionBuilding MaintenanceSite Preparation
View profile3(1)
Hagen Bau GmbH Logo

Hagen Bau GmbH 

Schönenberg An Der Thur · Since 2002

The core activity of Hagen Bau GmbH includes masonry work, conversions, renovations, consulting, planning, execution and construction management in the areas of: excavation and sewerage work, foundations and floor slabs, extensions and conversions of garages to single-family homes, composite stone surfaces and paths, various customer work such as repairs and patchwork, insulation and plastering, core drilling in concrete walls and injections in damp cellar walls.

Building ConstructionCivil EngineeringSite Preparation
View profile4(1)
HAKU Breaker AG Logo

HAKU Breaker AG 

Altendorf · Since 2010

The core activity of Haku-Breaker AG is the recycling of construction materials.

Building MaintenanceSite Preparation
View profile5(1)
Hans Barmettler & Co AG Logo

Hans Barmettler & Co AG 

Moosleerau · Since 1989

Hans Barmettler & Co AG carries out earth-energy drilling and turnkey services for geothermal projects, including ground-probe (borehole) drilling, core and specialised drilling, trenching and connection works, as well as planning and project execution.

Site Preparation
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Hans Graf AG Bauunternehmung Logo

Hans Graf AG Bauunternehmung 

Maisprach · Since 1997

The core activity of Hans Graf AG is construction, offering a wide range of projects in the fields of building construction, landscape construction, civil engineering, renovation and demolition. The company provides services such as planning, execution and management of construction projects for private and public clients.

Building ConstructionBuilding MaintenanceCivil Engineering
View profile5(1)
Hartmann Bau GmbH Logo

Hartmann Bau GmbH 

Oberneunforn · Since 2007

The core activity of Hartmann Bau GmbH is the execution of new construction and renovation work, including demolition and masonry work, as a specialist partner for customers in the Oberneunforn region.

Building ConstructionBuilding MaintenanceSite Preparation
View profile5(1)
H.J. Bieri Leitungsbau GmbH Logo

H.J. Bieri Leitungsbau GmbH 

Schangnau · Since 2006

The company's core activity is trenchless pipeline construction, in particular the laying of pipelines using special techniques such as ploughing, flushing drilling and pressing, as well as the associated services such as planning, consulting, locating and testing of pipelines.

Civil EngineeringSite Preparation
View profile5(1)
HOLENSTEIN AG, Bauunternehmung Logo

HOLENSTEIN AG, Bauunternehmung 

Gossau Sg · Since 1973

The core activity of Holenstein AG is construction, particularly in the areas of: building construction, civil engineering, renovations and extensions, customer work, and skip container services. The company thus offers a wide range of construction services, from new buildings to renovations and refurbishments to specialized services such as skip container services.

Building ConstructionBuilding MaintenanceCivil Engineering
View profile5(1)
IDEAL Amiante SA Logo

IDEAL Amiante SA 

Puplinge · Since 2017

The core activity of IDEAL Amiante SA is the execution of works in the field of asbestos removal (désamiantage), demolition (démolition of buildings and structures) and surface cleaning and treatment (décapage et traitement).

Site PreparationSpecialized Construction Activities
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I&H Group GmbH Logo

I&H Group GmbH 

Dietlikon · Since 2017

The core activity of I&H Group GmbH is the execution of renovation work on properties of all kinds in the German-speaking region of Switzerland. This includes specific services such as planning, organization and execution of work in the areas of electrical installation, dry construction, painting, demolition, flooring, panel work, window and insulation work, as well as masonry.

Site PreparationFlooring & TilingMasonry Work
View profile5(1)
Impraisa da fabrica Thomas SA Logo

Impraisa da fabrica Thomas SA 

Ardez · Since 2013

The core activity of Thomas SA is the provision of master builder services in high-rise construction, renovation and civil engineering, including the specialized fields of terrazzo, microcement and Manitou. The company offers a wide range of services, including new constructions, renovations, restorations and special works such as the manufacture of natural stone walls and the rental of construction equipment.

Building ConstructionBuilding MaintenanceCivil Engineering
View profile5(1)
Jenny GmbH Logo

Jenny GmbH 

Hüntwangen · Since 2023

The core activity of Jenny GmbH primarily encompasses the following areas: excavation work and earthwork, gardening, including redesign, stone walls and interlocking stones, and transportation of machinery and building materials. The company offers tailored solutions for construction projects of all sizes and specializes in the execution of excavation work, earthwork, gardening, and transportation services.

Site Preparation
View profile5(1)
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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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