Site Preparation

Heim Bohrtechnik AG 

Altstätten Sg · Since 2006

The core activity of HEIM Bohrtechnik AG is the planning and execution of geothermal drilling and well drilling, particularly for the extraction of geothermal energy. The company offers consulting, planning and execution of drilling services to extract geothermal energy for buildings.

Peter Schmid Baudienstleistungen 

Affoltern Am Albis · Since 2007

Peter Schmid Baudienstleistungen provides transport, waste disposal and recycling services, construction services, and gravel and natural stone trading. Offerings include container services (Muldenservice), pickup services, transport logistics, demolition, excavation and utility/civil engineering works.

Peter Schmid Baudienstleistungen AG 

Affoltern Am Albis · Since 2018

Peter Schmid Baudienstleistungen AG offers transport, waste disposal and recycling services, construction works, and trading of gravel and natural stone.

Botteron Démolition Sàrl 

Savagnier · Since 2022

Stamm Bau AG 

Arlesheim · Since 2006

The core activity of Stamm Bau AG is the provision of comprehensive construction and real estate services, including planning, consulting, renovation, refurbishment, façade construction, metal and steel construction, carpentry, painting, plastering, parquet and flooring work, as well as hazardous substance remediation. The company also offers overall services as a general or total contractor, where it carries out projects from development to realization.

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.

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.

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.

Künzli AG 

Gossau Zh · Since 2024

Künzli AG is a construction company providing building construction, civil engineering, customer service (renovation/repair) and subfloor systems. Its services include new building construction, demolition and excavation, utility and sewer works, renovations, and the installation and finishing of subfloors; the company uses modern equipment and maintains external ISO 9001 certification.

Bächler Bau GmbH 

Bünzen · Since 2020

The core activity of Bächler Bau GmbH is the provision of services in the field of construction, particularly in the areas of new construction, renovation, refurbishment and core drilling.

Ridis Generalunternehmung GmbH 

Kaiseraugst · Since 2022

The core activity of RIDIS GmbH is the provision of services in the construction industry, particularly in the areas of: * Painting work (façades, walls, ceilings, wood) * Plastering work (rendering, smooth surfaces) * Façade renovation (protection and aesthetic enhancement of properties) * Scaffolding construction * Flooring (installation of laminate, parquet, vinyl, etc.) * Drywall construction (room design with partition walls and ceiling cladding) The company offers these services to private and commercial customers and accompanies construction projects from the initial idea to completion.

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.

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.

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.

Erne Bau AG 

Egerkingen · Since 1983

Erne Bau AG is a construction company that operates as a builder and as a general and total contractor, providing main construction services including building construction, civil engineering, renovation, conversion and property maintenance.

Rofra Bau AG 

Aesch Bl · Since 2010

The core activity of ROFRA encompasses the following areas: construction, civil engineering, renovation, hazardous substance remediation, construction management, real estate development, and rental and sale of residential and commercial properties. The company provides comprehensive services in key areas of the construction industry and develops innovative residential and commercial projects.

Staba-Bau AG 

Binz · Since 2001

Eberhard AG 

Rheinfelden · Since 1984

Eberhard AG provides construction and environmental services, including civil engineering, demolition, and contaminated-site remediation, together with logistics and suction-technology services. The company also produces and processes building materials such as concrete and aggregates, including recycled materials, and offers transport and disposal services.

Addor AG, Tiefbau und Transporte 

Gstaad · Since 2023

The company's core activities include the areas of civil engineering, transportation, demolition, raw material processing, road construction and winter services. Specifically, the company offers the following services: management of quarries and gravel washing plants, production of concrete and gravel, implementation of projects in the fields of civil engineering, earthworks, water construction, environmental design, road and pipeline construction, assumption of seasonal assignments for municipalities and private individuals, particularly winter services, and logistical orders of any dimension. The company is a family-owned business, run by the third generation, which places emphasis on quality, flexibility and customer proximity.

Handwerker Allround GmbH 

Ebmatingen · Since 2003

The core activity of Handwerker Allround GmbH is the provision of comprehensive craftsmanship services for private and commercial customers in the greater Zurich area. This includes, among other things: general contracting, renovations, bathroom renovations, painting, plastering, flooring, repairs, tile laying, carpentry, and demolition work. The company thus offers a wide range of craft services tailored to the needs of its customers.

Julian Staub Abbruch AG 

Schönenberg Zh · Since 2020

The core activity of Julian Staub Abbruch AG is focused on demolition work, dismantling, gutting, partial demolition and transportation.

Gebrüder Iten AG, Unterägeri 

Unterägeri · Since 1990

Gebrüder Iten AG, Unterägeri provides earthworks, demolition, transport and waste-disposal services. The company also performs civil and specialist foundation works — including micropiles, anchor systems and sheet- and bored-pile techniques — and operates recycling and skip services.

Sotragen SA 

Etoy · Since 2024

Sotragen SA provides demolition, earthworks, pollution remediation, quarry operation and the processing and recycling of mineral construction materials. The company serves private and public clients, general contractors and engineering firms.

Sotrag SA 

Etoy · Since 1979

Sotrag SA is a construction company providing demolition, earthworks and civil engineering services. The company operates quarries and offers treatment, recycling and recovery of mineral materials, including decontamination services.

SWISSEDIFICE Sàrl 

Les Acacias · Since 2018

The core activity of Swissedifice is the provision of services in the construction industry, particularly in the following areas: demolition, minor masonry work, façade work, plastering, painting, tiling, parquet flooring, carpet and linoleum coverings, scaffolding, custom furniture, cleaning, concierge and maintenance services. The company offers these services to various customer groups, including professional clients (e.g. architectural firms, companies), public institutions (e.g. governments, municipalities) and private clients (e.g. homeowners, tenants). Swissedifice also provides consulting and support services for construction projects, renovations, expansions and interior design.

Bürge Kaminbau 

Schwarzenbach Sg · Since 1996

The core activity of Bürge AG involves the processing of high-quality pre-fabricated components into complex, high-functional systems, particularly in the areas of geothermal drilling, chimney construction, silencers, residential heating and chimney systems. The company also offers special custom-made products and in-house developments, and has a department dedicated to geothermal drilling.

Butti Bauunternehmung AG 

Pfäffikon Sz · Since 2006

The core activity of Butti Bauunternehmung AG is the execution of construction and renovation projects, including new buildings, conversions, refurbishments and renovations, particularly in the Zurich lake region.

Höhener Tiefbau AG 

Sins · Since 1990

The core activity of Höhener Tiefbau AG encompasses three main areas: 1. Demolition: demolition and gutting of residential, industrial and agricultural buildings. 2. Civil engineering: excavation of building pits and slope securing. 3. Landscaping: garden design and landscaping. The company thus offers services in the fields of construction and gardening.

KOF AG 

St. Margrethen Sg · Since 2024

KOF AG provides demolition, dismantling and deconstruction services, covering project planning, execution and material disposal. Services include specialist dismantling (steel, bridge and tank removal), interior stripping, concrete drilling and cutting, with an emphasis on material reuse and recycling.

KOM AG Betontrenntechnik 

St. Margrethen Sg · Since 2021

KOM AG Betontrenntechnik provides concrete drilling and cutting services, including core drilling, concrete cutting, diamond wire sawing and joint cutting. Work is performed with low-vibration methods, powerful equipment and highly trained personnel to separate structural elements precisely and without damage to surrounding construction.

DWT Schiemann 

Pfungen · Since 2024

The company's core activity encompasses various services in the construction sector, particularly: * Core drilling and milling * Renovation and gutting of houses, including static calculation * Bonding of CFRP laminates (structural reinforcement) * Grinding * Survey reference points in Switzerland * Carpentry work * Concrete work * Diamond tool manufacturing and trading, including diamond drill bits, diamond saw blades and diamond grinding wheels * Pick-up and delivery service Thus, the company offers a wide range of services for the construction and real estate industry.

Amrein Bau AG 

Emmen · Since 2016

The Amrein company is a construction company that offers a wide range of services in the field of building construction and civil engineering. The core activities include: Building construction: masonry and plastering work, concrete work, kitchen and bathroom renovations, demolitions and dismantling, static and non-static core drilling Civil engineering: pipeline construction (water, gas, district heating, electricity, drainage), closures and paving, sewerage, renovations and new installations, engineering structures, earthquake renovations, backfilling and engineering structures, underpinning, surfacing and construction and renovation work. The company thus offers comprehensive construction and renovation services for private and commercial customers.

Bistra Bau AG 

Basel · Since 2007

Bistra Bau AG is a construction company that provides a wide range of building services and end-to-end project support. Services include renovation, conversion and new-build work, masonry, plastering, painting, floor and tile installation, concrete and demolition works, waterproofing, façade finishing, acoustic and fire-protection measures, and maintenance.

Seiler AG, Hoch- und Tiefbau, Pontresina 

Pontresina · Since 1959

The core activity of Seiler AG is the execution of civil engineering and construction work, including hazardous substance remediation, in the Engadine region. The company offers a wide range of services, including the construction of single-family homes, high-altitude construction sites, customer-specific work such as conversions and renovations, as well as hazardous substance remediation.

Bernasconi Bau AG 

Luterbach · Since 2005

Bernasconi Bau AG is a construction company offering building construction, civil engineering and maintenance services, as well as specialized concrete work (betonArt), and acting as a general contractor to coordinate projects.

Seematter AG 

Interlaken · Since 1989

Seematter AG is a construction company that provides civil engineering services including excavation, demolition, landfill and recycling operations, transport, and renaturation projects.

Bürgi Tief- und Strassenbau GmbH 

Bischofszell · Since 2008

The core activity of Bürgi Tief- & Strassenbau GmbH encompasses civil engineering, road construction, and special foundation engineering. Specifically, the company offers the following services: Civil Engineering: excavation of building pits, foundation excavation, utility lines, sewage systems, demolition and dismantling; Road Construction: surfacing works, general road construction, parking lots, forecourts, paths, natural roads, and paving (natural stone, rows, wild stone, cobblestone); Special Foundation Engineering: anchoring work, diaphragm walls, shotcrete, drilling and micropile walls, pile foundations, in-situ concrete piles, and excavation pit securing. Thus, the company offers a wide range of services in the construction industry, from planning to the execution of construction projects.

Eggenschwiler Hoch- und Tiefbau AG 

Balsthal · Since 2006

The core activity of Eggenschwiler Hoch- und Tiefbau AG is the provision of services in the field of construction and civil engineering, including demolition work, environmental work and other construction projects.

H. Teuscher AG 

Därstetten · Since 1984

The core activity of H. Teuscher AG encompasses the planning and execution of construction projects in the field of infrastructure, particularly: road construction, surfacing works, earthworks, demolition works, environmental works, hydraulic engineering, transportation, pipeline construction, and sewer construction. The company thus offers a wide range of services in the construction sector, with a focus on the construction and maintenance of infrastructure projects such as roads, paths, squares, and supply lines.

M. Iannetta SARL 

Peyres-Possens · Since 2011

The core activity of M. Iannetta Sàrl is the provision of services in the construction sector, particularly in the following areas: masonry (e.g. new buildings, renovations, extensions), concrete work (e.g. reinforced concrete, precast concrete), civil engineering (e.g. bridges, roads, sewage systems), outdoor facilities (e.g. garden and landscape construction), drilling and sawing work (e.g. for foundations, cellars), and emergency and immediate services (e.g. 24-hour emergency service for urgent repairs). The company also offers consulting and planning services and can carry out projects from planning to execution.

Müller Aarberg AG 

Aarberg · Since 2000

The core activity of Müller Aarberg AG is the construction and planning of high-rise buildings, civil engineering and road construction, conversions, as well as the provision of services in the field of sewer renovation, core drilling, tightness testing and sewer works.

Hermann Greminger Tiefbau AG 

Bussnang · Since 1991

The core activity of Hermann Greminger Tiefbau AG encompasses civil engineering and road construction work, including excavation and trenching, road construction, maintenance and repair, as well as logistics services such as transportation and maintenance of construction machinery and materials. Additionally, the company offers specialized services like suction dredging, trenchless technology, soil improvement and maintenance of slopes and waterfront areas.

KBau.ch GmbH 

Fehraltorf · Since 2024

The core activity of KBau.ch GmbH is the provision of services in the construction sector, particularly: renovation and refurbishment of apartments and houses, new construction and extension of buildings, masonry, plastering, sewer and excavation work, gardening and landscaping, sanitary and electrical work, interior construction and renovation, kitchen and bathroom renovations, demolition and dismantling work. The company offers a comprehensive range of services, from planning to execution of construction projects.

Loosli Bau AG 

Schmiedrued · Since 2000

The core activity of Loosli Bau AG encompasses the areas of construction, civil engineering, transportation, suction dredging, metal construction, trough service and tightness testing. The company thus offers a wide range of services in the construction industry, from planning and execution of construction and civil engineering projects to specialized services such as suction dredging and metal construction.

Altermatt Aushub und Transporte AG 

Nunningen · Since 2000

The core activity of Altermatt Aushub und Transporte AG is the provision of services in the areas of excavation, civil engineering, transportation, and related works. Specifically, this includes: excavation and civil engineering work, pipe laying, environmental work, various works, pit service, transportation, and snow removal. The company thus offers a wide range of services required for the construction, maintenance, and upkeep of infrastructure and buildings.

Eco Green GmbH 

Regensdorf · Since 2017

Eco Green GmbH provides geothermal energy services, including project planning, heating-load calculations, ground probe (borehole) drilling and the installation and connection of systems to heat pumps. The company indicates it supplies certified drilling personnel and necessary operational fluids (e.g. antifreeze) as part of execution.

Eco Green Schweiz AG 

Regensdorf · Since 2021

Eco Green Schweiz AG provides geothermal energy services, including heat-demand calculations, planning and execution of ground probe drilling, and the connection of systems to heat pumps.

ER Construction Sàrl 

Gland · Since 2023

The core activity of ER Construction Sàrl is to provide services in the field of construction, particularly in the following areas: Demolition (safe and rapid demolition work), Construction (building solid and durable structures), Renovation (renovation and modernization of existing buildings), Masonry (masonry work for robust and aesthetic foundations), and Site preparation (preparing the land for construction). The company positions itself as a "general contractor" and offers its customers a comprehensive range of services for all phases of a construction project.

Ernst Höhener AG 

Obfelden · Since 2017

Ernst Höhener AG carries out excavation and civil earthworks, demolition and transport services. Their offerings include trench and excavation work, utility-line installation, site formation, demolition with recycling, various transport services and equipment rental with operators.

Gass Dienstleistungen GmbH 

Oltingen · Since 2019

The core activity of GASS Dienstleistungen GmbH is the provision of construction and environmental services, including the planning and execution of construction projects, as well as the provision of services in the field of construction economics. The company positions itself as a family business, focusing on the personal and individual implementation of its customers' wishes.