Building Maintenance

Widmer Baugeschäft AG 

Herrliberg · Since 2020

Widmer Baugeschäft AG is a construction company offering remodeling and renovation services, garden construction, and excavator and dumper rental. It carries out structural and civil building work as well as maintenance projects for private clients, public administrations and architects.

Widmer Service Transport Liegenschaften 

Uznach · Since 2024

The company offers various services, including: * Skilled manual assistance (e.g. technical maintenance/repair work, janitorial services, environmental/green space maintenance) * Transport services (with trailers) * Rental of trailers and other equipment (e.g. bicycle carriers) * Support with various tasks (e.g. clearing out, disposal, building maintenance) The core activity of the company can be described as 'Skilled Manual Assistance and Transport Services'.

Widmer + Widmer GmbH 

Zurich · Since 1998

The core activity of Widmer + Widmer GmbH is the installation of ceramic wall and floor coverings in interior and exterior areas, as well as mosaic work. This also includes natural and artificial stone work and silicone joints. In addition, the company also offers renovations such as bathrooms, kitchens and various living areas.

Wilfling Schreinerei AG 

Herisau · Since 2006

The core activity of Wilfling Schreinerei AG is the manufacture, assembly and servicing of wood and wood-based materials for interior construction, particularly for new buildings, conversions, renovations and furniture production.

Willi Hoch- und Tiefbau AG 

Schiers · Since 1994

The core activity of Willi Hoch- und Tiefbau AG encompasses the provision of services and products in the field of construction and civil engineering, including: Construction: new construction, renovation and refurbishment of single-family and multi-family homes, commercial and industrial buildings; Civil engineering: civil engineering services, crane work, environmental design and transportation; Concrete elements: manufacture of concrete elements such as concrete blocks, concrete wells, kitchen countertops, road elements and other custom concrete products; Drilling and cutting: specialized work such as drilling and cutting of concrete, masonry and natural stone; Prefabricated construction: manufacture of concrete elements and other building components. The company also offers apprenticeship training and consulting services.

Willy Kirchhofer Kaminfegermeister 

Rothenburg · Since 2002

The core activity of Kirchhofer Kaminfeger AG encompasses the following services: chimney sweeping services, combustion system checks, fire protection, and ventilation cleaning. The company provides these services from a single source and specializes in the maintenance and upkeep of combustion systems and ventilation systems.

Windlin Kaspar 

Kerns · Since 1978

The core activity of the company Zimmerei Kaspar Windlin is the execution of carpentry work, particularly in the field of joinery, as well as the renovation and laying of parquet flooring.

Wintsom Facility Services GmbH 

Wallisellen · Since 2015

Wintsom Facility Services GmbH provides commercial cleaning and facility services, including office cleaning, construction cleaning, housekeeping and hotel cleaning, as well as property maintenance and garden care. Its services cover building upkeep, facade cleaning and coordinated facility management tasks.

Wirz AG Gebäudeschadstoffe 

Bern · Since 2024

Wirz AG Gebäudeschadstoffe is a company for hazardous building-material remediation, providing asbestos removal, controlled dismantling and environmentally compliant disposal of contaminated materials. Its services include investigations and material sampling, remediation of asbestos, PCB, PAK (polycyclic aromatic hydrocarbons) and heavy-metal coatings, and specialist works such as ceiling and floor remediation.

Wirz AG Schadstoffsanierung 

Bern · Since 2016

Wirz AG Schadstoffsanierung conducts hazardous-material investigations and provides professional asbestos remediation, controlled dismantling and environmentally compliant disposal of contaminated building materials. Services also include remediation of PCB, PAK (polycyclic aromatic hydrocarbons) and heavy-metal coatings, as well as work on pipe insulation, façades and industrial floor refurbishments.

W. Jucker GmbH 

Schlatt Zh · Since 1998

The core activity of the company 'Elektrokontrollen Winterthur' consists of carrying out regular inspections and tests of electrical installations in industrial, commercial and private areas to ensure the safety and functionality of these systems. This includes in particular: Periodic inspections of electrical installations at specified intervals (e.g. 1, 2, 5 or 10 years in industry and commerce, every 20 years in private areas); Acceptance inspections of new electrical installations before handover to the owner or builder; Testing of electrical installations for their functionality and safety; Creation of safety certificates and defect reports; Consulting and informing customers about electrical inspections and installations.

wohnholz GmbH 

Wiesendangen · Since 2003

The core activity of Wohnholz is the manufacture and sale of individual, unique furniture pieces, as well as the provision of carpentry and interior finishing services, including repairs and renovations.

Wohnkonzepte Jacomet 

Schleitheim · Since 2019

The company's core activity is the interior construction, renovation and refurbishment of living spaces. The company offers a wide range of interior construction services, including planning, execution and project management of renovations, conversions and tenant changes.

WP Generalbau GmbH 

Remetschwil · Since 2018

WP Generalbau GmbH is a construction company providing building planning, construction management and general contracting services. Its offerings include structural engineering, metalwork, refurbishment and new-build projects, and the production of custom-made furniture.

Wunderle GmbH 

Basel · Since 2001

Wunderle GmbH provides building caretaker and cleaning services led by Markus Wunderle (federally certified caretaker). Services include routine and deep cleaning, small repairs, heating-system monitoring, key management, garden maintenance, apartment handovers and emergency interventions for water or other building damage.

Wydu Bau GmbH 

Belp · Since 2017

The core activity of Wydubau GmbH is the provision of masonry and construction services, including: environmental work, renovations and restoration work, conversions, new buildings, plastering work, particularly on historic buildings, pipeline construction and sewerage, forecourts and composite stones, and core drilling. The company thus offers a wide range of services in the field of construction.

Wyrsch & Sohn GmbH 

Wettswil · Since 2022

The core activity of Wyrsch & Sohn is property and garden maintenance, including services such as caretaking, maintenance cleaning, winter gardens, window and shutter cleaning, cellar and stairway cleaning, garden care, redesign, planting, various cleaning services, disposal, clearing, transportation and house sitting.

X-Baumanagement AG 

Oberwil Bl · Since 2020

X-Baumanagement AG provides construction and project management services, including site supervision, cost and schedule control, and quality assurance. The firm also handles tendering and contract awards, coordination with architects and specialists, building-permit procedures and final construction accounting.

Xylaos services Sàrl 

Crans Vd · Since 2012

Xylaos services Sàrl provides maintenance and renovation of wooden terraces, including repair and restoration work on decking surfaces.

Yanez Instandhaltung Service GmbH 

Zurich · Since 2022

Yanez Instandhaltung Service GmbH provides maintenance, janitorial and routine cleaning services. The company carries out technical upkeep and facility maintenance for buildings and properties.