Crafts & Trades

Iseni Sanitaire Chauffage Sàrl 

Lavey-Village · Since 2019

The core activity of Iseni Sanitaire Chauffage is to provide services in the field of sanitary and heating technology, including installation, maintenance, repair and renovation of sanitary facilities and heating systems, as well as the installation of solar systems and other renewable energy systems.

Isler + Kägi AG Bedachungen 

Winterthur · Since 2016

The core activity of Isler + Kägi AG is the planning, execution and management of roofing work, including the construction of pitched roofs, flat roofs and photovoltaic systems.

ISOCUT GmbH 

Thayngen · Since 2004

The core activity of Isocut GmbH is the processing of materials such as plastics, metals, fabrics, and woods using various methods, including: water jet cutting (up to 50 mm thickness), laser cutting (oxygen-free, up to 25 mm thickness for steel, 15 mm for stainless steel, and 12 mm for aluminum), sheet metal shearing (up to 6 mm thickness for steel, 5 mm for stainless steel, and 10 mm for aluminum), sheet metal bending (up to 3000 mm length), welding of steel, stainless steel, and aluminum (using TIG/MIG processes), and cutting and design of letters (e.g. for advertising signs). The company thus offers a wide range of services in the field of material processing and machining.

Isogips Nüssler GmbH 

Bonaduz · Since 1997

Isogips Nüssler GmbH is a plastering company that performs plastering and interior rendering services. The firm emphasizes careful work planning, skilled execution, and the use of selected materials.

Isotech Ticino SA 

S. Antonino · Since 1999

The core activity of Isotech Ticino SA is to provide services and solutions in the construction industry, particularly in the areas of: * Pavement systems for various applications such as sports, industry, healthcare and parks * Waterproofing for buildings and facilities * Concrete restoration * Static reinforcement with carbon fibers * Design assistance The company thus offers a wide range of services and solutions for the construction industry, from planning and consulting to the execution of work in the areas of pavement systems, waterproofing and structural engineering.

Isotop AG 

Wald Zh · Since 2003

The company specializes in the planning, design and execution of facade work, interior and exterior plastering, plastering, natural stone and ceramic tile cladding, as well as renovation and restoration of old buildings. The core activity includes consulting, planning and execution of high-quality facade and interior design, including the processing of natural stones, ceramic tile cladding and other materials, with the aim of creating aesthetically pleasing and functional spaces.

ITB Beratende Ingenieure HTL Insta-Technik AG 

Biberist · Since 1974

The core activity of ITB Elektroplanung AG is the provision of electrical planning services, particularly in the areas of: electrical planning, execution planning, integral building testing (IGT), expert opinions and feasibility studies, lighting renovations, e-mobility, and photovoltaic systems (PVA). The company offers these services for various types of construction projects, including: residential buildings (single and multi-family homes), commercial and industrial buildings, renovations and conversions, public buildings, and network construction and line construction. ITB Elektroplanung AG positions itself as a partner for electrical planning, offering individual, timely, and advisory solutions.

i-TEC Schweiz AG 

Diepoldsau · Since 2010

The core activity of i-TEC is the planning, construction and maintenance of electrical installations, including photovoltaic systems, e-mobility solutions, lighting systems, video surveillance systems and access control systems, for industry, commerce and residential construction in Austria, Switzerland and Germany.

Iten u. Henggeler, Holzbau AG 

Morgarten · Since 1980

The core activity of Iten & Henggeler Holzbau AG is the planning and carpentry business with a focus on timber construction, including architecture, element construction, renovations, interior finishing, staircase construction, roof windows, facade construction, joinery, scaffolding, contract carpentry and crane services.

ITESA Suisse Sàrl 

Charrat · Since 2008

The core activity of ITESA Suisse is the distribution of security technology and products, particularly in the fields of alarm, video surveillance, intercom, access control, fire protection and sound technology, as well as automation of gates. The company acts as a distributor and offers consulting services for professional customers.

Iuliano & Fils Sàrl 

Jouxtens-Mézery · Since 2005

The core activity of Iuliano et Fils is the provision of services in the field of sanitary installations, gas installations, sheet metal work, roofing and water pipe descaling. The company offers the following services in particular: * Bathroom renovation * Installation and maintenance of sanitary facilities * Gas installations * Sheet metal work and roofing * Descaling of water pipes * General plumbing The company offers these services in the Lausanne region and surrounding areas, particularly in the municipalities of Lutry, Montreux and Vevey.

Jägli und Schneider AG 

Davos Platz · Since 2011

The core activity of Jägli & Schneider AG is the execution of conversions and renovations as well as various construction works, including plastering, drywall installation, masonry, concrete restoration, dry construction, facade construction and poured floors.

Jakob AG Gipser- und Malergeschäft 

Oberburg · Since 1984

The core activity of Jakob AG is the execution of plastering and painting work.

Jakob Forrer SA 

Le Mont-Sur-Lausanne · Since 2025

Jakob Forrer SA is an engineering consultancy for building services that provides design and consulting services in heating, ventilation, air conditioning and sustainable energy.

Jakob Frey & Co. 

Chur · Since 2004

The core activity of Jakob Frey & Co. consists of consulting, planning and laying various types of floor coverings, including parquet, carpet, laminate, cork, vinyl, outdoor coverings and pleated curtains, as well as the installation of dirt traps and clean running zones.

JaMan Creative Performance GmbH 

Widnau · Since 2022

The core activity of JaMan Creative Performance is the execution of flooring work, particularly in the area of floor and wall coverings, including the laying of tiles, natural stone, mosaic and silicone, as well as the implementation of renovations and art projects.

J. BOVEY SA 

Chanéaz · Since 2012

J. BOVEY SA installs and services sanitary and heating systems and carries out sheet‑metal (ferblanterie) work. The company also provides repairs and maintenance, constructs potable water and gas networks including excavation works, and acts as a gas concessionaire.

JMD Romay Bau GmbH 

Schaffhausen · Since 2002

JMD Romay Bau GmbH is a construction company that plans and executes conversion, renovation and refurbishment projects. It provides masonry, plastering and tiling services, acts as a general or total contractor and coordinates other trades such as painting, flooring, electrical and sanitary work.

JMG INTERIORS, Jean-Marc Gervaz 

Küsnacht Zh · Since 2021

The core activity of JMG INTERIORS is the interior design and sale of exclusive furniture, home accessories, lighting, pictures, paintings, mirrors and decorations. The company also offers individual solutions such as custom-made furniture and operates a showroom in Zurich, where a constantly changing exhibition of new products, exclusivities and one-off pieces is presented.

Josef Reichlin Baggerunternehmung KLG 

Alpthal · Since 2017

The company's core activity is the execution of excavation work, particularly in the alpine region, including demolition, dismantling, excavation, river training and snow removal work, as well as the construction of surroundings, stone walls, water intakes and pipelines.