Construction & Architecture

Kista AG 

Cham · Since 2017

Kista AG provides building and property services covering renovation, refurbishment, maintenance and restoration works. Its services include planning and project management, caretaking and facility management, cleaning, winter service, garden works, demolition/clearance and building-technical maintenance such as electrical and HVAC-related tasks.

Kista Generalunternehmung AG 

Cham · Since 2017

Kista Generalunternehmung AG provides construction, renovation and refurbishment services including project planning, site management, demolition and proper waste disposal. The company also offers building maintenance and caretaking, technical and electrical servicing, cleaning, winter services and garden maintenance.

Klein Gartenbau GmbH 

Dintikon · Since 2017

The core activity of Klein Gartenbau is gardening and garden maintenance. This includes the planning, creation and maintenance of gardens, including the selection and cultivation of plants, as well as the execution of gardening work such as upkeep and planting.

KNECHT BAUUNTERNEHMUNG AG 

Münchenstein · Since 1998

KNECHT BAUUNTERNEHMUNG AG is a construction company providing building and civil engineering services, including new construction, renovation, demolition, excavation and structural works. The company delivers integrated project services such as planning, execution and engineering for single-family and multi-family homes as well as commercial and industrial buildings.

Kobal Gebäudetechnik AG 

Unterkulm · Since 2002

Kobal Gebäudetechnik AG provides consulting, planning and execution for building services projects, covering sanitary, heating and renewable energy systems. Services include bathroom and pipeline planning, installation and maintenance of plumbing and heating systems (heat pumps, wood and pellet boilers), prefabricated wet-room installation, flood-protection solutions and emergency remediation.

Koch Wärmepflege GmbH 

Zofingen · Since 2022

Koch Wärmepflege GmbH provides chimney sweeping services, combustion inspections including CO measurements, and fire-protection consulting and fire‑penetration sealing. The company maintains wood, gas and oil heating systems, advises on efficiency and preservation of installations, and supports builders, municipalities and architects on fire-safety matters.

Kogo Montagen & Holzbau GmbH 

Rorschacherberg · Since 2008

The core activity of KOGO GmbH is the execution of assembly and carpentry work, particularly in the areas of: window and door assembly, aluminum shutter and aluminum box assembly, interior finishing, glass assembly, sealing and carpentry. The company also offers a 24-hour window service.

Kohler in One AG 

Schattenhalb · Since 1996

The core activity of Kohler Bau AG is the execution of construction projects and related services. Specifically, this includes: Building construction (construction of buildings), Civil engineering (construction of infrastructure such as roads, bridges, tunnels, etc.), Renovations and refurbishments (renovation and modernization of existing buildings), High-altitude construction (specialized construction work in mountainous regions), Protective structures (construction of protective structures such as avalanche control systems, wildlife protection systems, etc.), Snow removal and transportation (services related to snow removal and transportation of materials), Water construction and restoration work (construction and renovation of water structures such as dams, canals, etc. and restoration of water bodies), Environmental work (services related to the design and maintenance of environments such as parks, gardens, etc.), and Spring capture (construction and renovation of spring capture and water supply systems).

Könitzer AG 

Worb · Since 1976

Könitzer AG manufactures timber and timber/metal windows, doors and provides general carpentry work. Services include planning, design, execution and installation, as well as renovations, new-builds, sound insulation, thermal refurbishment and burglary protection.

Könitzer + Hofer AG 

Worb · Since 1991

Könitzer + Hofer AG manufactures wooden and wood–metal windows, doors and carries out general joinery, providing planning, design, execution and on-site installation. Services cover new-build, conversion and renovation projects and include soundproofing, thermal upgrades and burglary-protection measures.

Konsag, Holzkonservierung und Bautenschutz AG 

Goldswil B. Interlaken · Since 1985

Konsag, Holzkonservierung und Bautenschutz AG provides wood preservation and building-protection services, including pest control, water-damage remediation and leak detection. The company also offers construction drying services, rents aerial work platforms and provides IPAF operator training.

Köttermann AG 

Kemptthal · Since 1994

Köttermann Schweiz is a full-service provider for laboratory projects, specializing in the planning, execution, and maintenance of laboratory facilities. The core activity includes consulting, planning, delivery, and installation of high-quality steel furniture, safety cabinets, fume hoods, and other laboratory equipment, as well as the implementation of renovations and expansions of laboratory spaces.

KSL Ingenieure AG 

Dättwil Ag · Since 1972

KSL Ingenieure AG is an engineering firm offering a wide range of services in the fields of structural engineering, geomatics, environment, infrastructure, and spatial planning. The core activities include: * Structural engineering (foundation and special civil engineering, repair and renovation, dynamics and earthquake safety) * Geomatics (construction and engineering surveying, utility mapping, geographic information systems, sensor technology) * Environment (water construction, environmental planning, urban drainage) * Infrastructure (transportation infrastructure, supply and disposal) * Spatial planning (land management, spatial planning, building administration) The company provides consulting services, planning and design as well as implementation of projects in these areas.

Kurt Lämmler GmbH 

Ermenswil · Since 2005

Kurt Lämmler GmbH is a carpentry workshop that manufactures wooden products and undertakes interior joinery and renovation work. Services include kitchens, cabinets, bathrooms, doors, tables and CNC-produced components, with project support from consultation and planning through production, installation and after-sales service.

Ladenmacher AG 

Hägendorf · Since 2010

Ladenmacher AG was acquired by SCS Storeconcept AG and is part of its shopfitting and interior-solutions offering. SCS Storeconcept provides conception, planning, production and installation of shop and interior fittings, together with retail consulting and customer analytics.

Läderach GmbH Fugenabdichtungen 

Bern · Since 1998

The core activity of Läderach GmbH is the execution of joint sealing as well as related services such as facade sealing, special sealing, joint renovation and renovation, particularly in the field of ceramic coatings, natural stone, seamless coatings, kitchens and bathrooms as well as parquet.

LA MATERIOTECH Sàrl 

Châtelaine · Since 2019

Materiostock is a Swiss provider of solutions for interior design, particularly for ceilings, walls and other surfaces. The company's core activity is the marketing and distribution of products from various Swiss manufacturers such as Innloc, Haag and Metalit, who specialize in the production of ceilings, wall cladding and other metal products. Materiostock offers a wide range of products, including ceilings, wall cladding, acoustic solutions, lighting systems and other solutions for interior design. The company supports architects, planners and installers in the selection and implementation of these solutions and provides consulting, sales and delivery of standard products.

LAPORCH SARL 

Moudon · Since 2016

LAPORCH SARL is a workshop where architects, joiners, carpenters, industrial designers, engineers and woodworking technicians collaborate. The studio designs and fabricates wooden elements and constructions—including furniture, stairs, kitchens, interior fittings and art installations—while integrating digital fabrication techniques (CAD/CAM/CNC) across design and construction.

L'Artisan Sàrl 

Vétroz · Since 2009

The core activity of L'Artisan Sàrl is the manufacture and distribution of high-quality wood products, particularly in the areas of joinery (doors, windows, furniture), cabinetmaking and Internorm systems (window systems). The company also offers services such as custom manufacturing and renovation of wooden structures.

Lebag Leitungs- und Elektrobau AG 

Lenzburg · Since 1991