Building contractor in
Sion

Dumas Construction SA

Since 1972 · 51–100 empl.·4.7(15)

Dumas Construction SA is a construction company operating as a general contractor across building, civil engineering and infrastructure projects. Its services include residential and industrial building works, roadworks, earthworks and public infrastructure, providing project support from design to handover while integrating sustainability measures.

Sovalco SA

Since 2012 · 1–10 empl.·4.9(11)

Sovalco SA is a construction and real estate firm that carries out new building projects, renovations and property sales. It provides project studies and construction execution and operates an estate agency handling the sale of villas, apartments, chalets and halls.

André Sierro SA

Since 1994 · 51–100 empl.·4.3(13)

André Sierro SA is a construction company active in building construction, civil engineering and road construction. Its work includes masonry and reinforced-concrete structures, earthworks, drainage and road projects, as well as renovations and alterations.

Association Valaisanne des Entrepreneurs du Bâtiment et du Génie civil (AVE)

Since 1951 · 101–500 empl.

Association Valaisanne des Entrepreneurs du Bâtiment et du Génie civil (AVE) is a professional association representing companies in building and civil engineering. The association provides member services including legal support, administration of social funds and pension schemes, vocational training, technical commissions and industry publications.

CPCV Caisse de pension de la Construction du Valais

Since 1982 · 101–500 empl.

CPCV Caisse de pension de la Construction du Valais is a pension fund that provides retirement, disability and death benefits for employees of affiliated employers in the main construction and tiling sector. It operates a bi-primauté pension plan and offers benefits above the LPP minimum, including a 7% conversion rate on the total retirement capital.

Caisse de retraite anticipée du secteur principal de la construction et du Carrelage du canton du Valais - RETABAT

Since 2000 · 101–500 empl.

Caisse de retraite anticipée du secteur principal de la construction et du Carrelage du canton du Valais - RETABAT is a foundation that administers early-retirement benefits for workers in the main construction and tiling sector. It grants early pension benefits before the ordinary statutory retirement age under federal old-age insurance law and publishes rules, application forms and information materials for insured persons and employers.

constructionvalais

Since 2018 · 101–500 empl.·4.0(26)

constructionvalais is a professional association for building and civil engineering companies. It represents contractors and related stakeholders and provides services such as vocational training, technical guidance, publications, social funds and legal protection.

Valbaco SA

Since 2020 · 11–20 empl.

The core activity of Valbaco SA is the execution of works in the field of masonry and reinforced concrete, including formwork and ironwork.

Workswell Sàrl

Since 2019 · 1–10 empl.

Workswell Sàrl is an independent engineering firm specializing in Measurement–Control–Regulation (MCR) and Building Management Systems (BMS/GTC). The company provides energy audits and MCR analyses, system integration using standard protocols (BACnet, Modbus, KNX), MCR design and planning, retrofit, construction supervision and commissioning, complying with Swiss standards (SIA, KBOB).

M&R Groupe SA

Since 2024 · 1–10 empl.

M&R Groupe SA is a company specialising in screeds (chapes), béton ciré and resin flooring. It offers tailored solutions for new-build and renovation projects in residential, commercial and industrial settings, including decorative systems such as ECOFLOOR and rubber‑granule floor finishes.

RTMV.CH SA

Since 2025 · 1–10 empl.

RTMV.CH SA is an electrical engineering and installation company. It plans and delivers projects in building services, lighting, energy, telecommunications, IT, safety, and photovoltaic systems.

Techno Metal Post VD Sàrl

Since 2026 · 1–10 empl.

Techno Metal Post VD Sàrl provides screw piles and foundation solutions for construction projects. The company supports residential, commercial, and industrial projects with engineering services, technical documents, and certified installation partners.