Site Preparation

Hydrojet AG 

Basel · Since 1987

The company's core activity is concrete repair and building protection, including specific services such as structural reinforcement, coating, surface protection, fire protection, sealing, concrete removal, substrate preparation, industrial cleaning, surface treatment and cleaning.

Imas Abbruch GmbH 

Reichenburg · Since 2017

The core activity of IMAS Abbruch GmbH is the demolition and dismantling of buildings of all kinds, including partial and complete demolition, gutting, disassembly and environmentally friendly disposal.

Imhof Marcel AG 

Maisprach · Since 2006

Marcel Imhof AG is a Swiss company specializing in the manufacture and distribution of chocolate and other sweets.

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.

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.

Java Rückbau + Recycling AG 

Riedholz · Since 2013

The core activity of Java Rückbau + Recycling AG is the execution of demolition projects, particularly complex demolition projects with contaminated building materials and polluted soils. This includes planning, demolition, remediation and recycling of building materials. The company offers a customer-oriented overall solution by providing all necessary steps from planning to acceptance of the demolished and remediated building site from a single source.

Jeker AG, Aushub, Tief- und Rückbau 

Büsserach · Since 1989

The core activity of Jeker AG is the execution of excavation, deep foundation and demolition work, including: site excavation and securing, soil remediation, demolition and contaminated site remediation, and disposal. The company provides these services primarily in the Northwestern Switzerland region.

J. Merckx GmbH 

Büsserach · Since 2003

The core activity of J. Merckx GmbH is construction, including high-rise and civil engineering.

Johan BBS GmbH 

Zurich · Since 2018

Johan BBS GmbH provides concrete drilling, cutting and concrete removal services. The company uses diamond tools, rail-guided and mobile cutting machines and hydraulic presses to perform precise cuts, openings and demolition tasks. Services include single and series drillings (10–800 mm), cutting of concrete elements, enlarging openings and creating doorways, stairs and ramps.

John+Bärtsch, Immobilien Bewirtschaftung, Inh. Hans Bärtsch 

Sargans · Since 2009

John+Bärtsch, Immobilien Bewirtschaftung, Inh. Hans Bärtsch is a construction firm offering building construction, civil engineering, conversion, renovation and demolition services, including excavation, earthworks and sewerage works.

Josef Imgrüt AG 

Lucerne · Since 1979

Josef Imgrüt AG is a construction company specializing in renovations and alterations to existing building fabric. Its services cover planning and execution as well as demolition and clearing, masonry, drilling and milling, plastering and drywall, and exterior/site works.

Josef Kälin Baggerbetrieb AG 

Schönenberg Zh · Since 2019

Josef Kälin Baggerbetrieb AG provides civil engineering services including excavation and site works, utility-line (werkleitungs) construction, road works and building demolition, supported by an equipped machinery fleet and experienced operators.

Josef Stark, Nachfolger Martin Stark 

Zwingen · Since 2010

The core activity of the company "Josef Stark Betonbohrungen" is the execution of concrete works, in particular concrete drilling, concrete milling and concrete cutting.

Jovi Abbruch Bauservice GmbH 

Zurich · Since 2012

The core activity of JOVI encompasses a wide range of services in the construction and waste management sectors. The main activities can be described as follows: * Demolition and dismantling: The company offers demolition services for buildings, walls, drywall, concrete, and flooring, including manual gutting of high-rise buildings. * Renovation and interior construction: JOVI carries out renovation and interior construction work, including waste disposal. * Waste management and construction logistics: The company provides waste management services, including waste disposal in accordance with applicable regulations. Additionally, it offers construction logistics services, including access control and waste management. * Cleaning: JOVI offers various cleaning services, including maintenance cleaning, janitorial services, facade cleaning, construction cleaning, and event cleaning. Overall, the core activity of the company can be described as comprehensive services in the construction, waste management, and cleaning sectors.

J. STEFFEN AG 

Mörschwil · Since 2022

The core activity of J. STEFFEN AG is the provision of services in the general construction industry, including: general civil engineering and road construction, trenchless pipe laying, landscaping, forestry services, PE welding, and rental of personnel and construction equipment/machinery to construction companies. Additionally, the company also offers planning and consulting services for civil engineering construction sites.

Karl Gisi AG 

Dottikon · Since 2015

The core activity of Karl Gisi AG is the execution of construction projects, in particular: * New construction of single-family and multi-family homes as well as public buildings * Renovation and refurbishment of existing buildings * Sanitation and modernization of older houses and apartments * Demolition of houses and commercial properties * Construction consulting and planning of construction projects * Execution of special construction services such as core drilling, milling and cutting of concrete and masonry * Grinding and refinement of subfloors * Construction of sight walls and sight concrete work The company thus offers a wide range of construction services and positions itself as a comprehensive service provider for construction projects of all kinds.

Karl Hirt AG, Bau- und Gipsergeschäft 

Zetzwil · Since 1998

The core activity of Hirt AG primarily encompasses civil engineering and construction, including earthworks, base layers, plastering and transportation. Additionally, the company also offers real estate development projects.

Kaspar von Bergen Bau AG 

Hasliberg Goldern · Since 2004

The core activity of Kaspar von Bergen Bau AG is general construction, particularly master builder and excavator work, as well as renovation and environmental design. The company specializes in the construction of holiday homes, residential buildings, commercial and agricultural buildings in the Hasliberg region.

Kebowa Kernbohrungen Wasserfallen 

Röschenz · Since 2021

The core activity of Kernbohrungen Wasserfallen is the execution of core drilling and concrete processing, particularly through the application of modern equipment and technologies to carry out precise and efficient drilling, with a focus on safety, environmental compatibility and customer satisfaction.

Keller Baudienstleistungen AG 

Freimettigen · Since 2023

Keller Baudienstleistungen AG provides construction services including building demolition and excavation, skip/containment services and transport, metalwork, external/site works and core drilling. The company performs compliant disposal and recycling of demolition materials and offers asbestos remediation when required.