General Contractors

Louis Vernier SA 

Boécourt · Since 2020

Louis Vernier SA carries out masonry, concrete and reinforced-concrete work as well as insulating renders and façade work. The company also provides civil engineering and earthworks, construction and conversion of industrial buildings, pipeline installation and the construction of family houses and infrastructure structures.

multistudio GmbH 

St. Gallen · Since 2023

multistudio GmbH develops architectural and interior design concepts and supports projects from concept through planning to execution. The firm combines building planning and interior architecture and collaborates with by marei on furnishing and fit-out concepts where appropriate.

Polynorm Software AG 

Glattbrugg · Since 1984

Polynorm Software AG provides integrated IT solutions for manufacturing, wholesale and retail. The company supplies software and services including ERP systems, e‑commerce platforms (e‑shop, PIM, CMS), point‑of‑sale systems, business intelligence, data and document management, system integration and IT support.

promaFox AG 

Baden · Since 1990

The company's core activity is gastronomy specialist planning, i.e. the planning and implementation of gastronomy infrastructure, including conception, development, specialist planning and general planning. The company offers full-service solutions for the gastronomy industry, from conception to commissioning, and accompanies customers in the realization of their gastronomy projects.

Robert Fehr AG 

Andelfingen · Since 1985

The core activity of Robert Fehr AG is carpentry, particularly the development, processing and manufacture of sustainable and ecological wood products for interior construction, such as kitchens, doors, cabinets, floors, stairs and bathrooms.

S + L Architektur AG 

Widnau · Since 2013

S + L Architektur AG provides architectural and planning services along with project development, construction management and site supervision. The firm acts as a general or total contractor, offers land and property brokerage and complementary services such as site assessments, energy concepts and regulatory clarifications.

Toneatti AG Bilten 

Bilten · Since 1999

Toneatti AG Bilten carries out public and private construction projects as a generalist, providing services in civil engineering, building construction, renovation, general/turnkey contracting and geomatics.

Toneatti AG Jona 

Jona · Since 1999

Toneatti AG Jona is a construction company that provides building and civil engineering services, undertakes renovation projects, acts as general and total contractor, and offers geomatics and surveying services.

Udry Construction SA 

Savièse · Since 2010

Udry Construction SA is a construction company offering timber construction (timber‑frame houses and chalets), carpentry and prefabricated elements (facades, floors, roofs), and general‑contractor services for villas, chalets and Minergie/Minergie‑P buildings. The company also provides renovation work, technical office services and project management, including turnkey delivery.

Udry Group SA 

Savièse · Since 2021

Udry Group SA is a construction company offering timber construction, general contracting and renovation services, including prefabricated wood villas, chalets, carpentry and joinery. The company also provides technical office services, construction management and turnkey project delivery, and works on Minergie and Minergie-P certified buildings.

Udry Immo SA 

Savièse · Since 2011

Udry Immo SA is a construction company that carries out timber construction, renovations and general contracting. It provides timber-sector services (carpentry, prefabricated elements, joinery, insulation), constructs villas, chalets and residential/commercial buildings including Minergie and Minergie‑P projects, and offers technical office services, project management and turnkey delivery.

Udry J + S SA 

Savièse · Since 1995

Udry J + S SA is a construction company specialising in timber construction, general contracting and renovation. Its services include prefabricated timber elements (walls, floors, roofs), carpentry and joinery, technical project management and turnkey projects for villas, chalets, residential and commercial buildings, and it works on Minergie and Minergie‑P projects, mainly in Valais, Vaud, Geneva, Fribourg and occasionally in German‑speaking Switzerland.

W. Örtig AG 

Eschenbach Sg · Since 2024

W. Örtig AG is a construction company carrying out structural and civil engineering works, providing scaffolding, core drilling, milling and other customer-specific services, and offering general contracting.

Züst Gübeli Gambetti Generalplanung GmbH 

Zurich · Since 2015

Züst Gübeli Gambetti Generalplanung GmbH is an architecture and urban design practice offering architecture, urban planning, interior design, general planning and project development services. The firm carries out SIA planning phases, provides general-planner and consultancy services, and employs Building Information Modeling (BIM) and sustainability considerations in its work.

Aera Studio di Architettura Sagl 

Tenero · Since 2012

The core activity of AERA Studio di architettura is the planning and design of buildings and spaces with a focus on sustainability, ecology, and aesthetics. The company provides architectural services for private and public projects, including new constructions, renovations, and interior design, with the goal of creating functional and harmonious spaces that meet the needs of users.

archart generalunternehmung ag 

Steffisburg · Since 2017

Architecture Nilton Guerreiro 

Lausanne · Since 2007

The company ANG is an architectural firm specializing in the development and realization of projects in the fields of architecture, design, and interior design. The core activities include planning, consulting, expertise, and implementation of projects in various areas, such as: new construction and renovation of residential and commercial properties, interior design and fit-out of bars, restaurants, hotels, and other public facilities, planning and realization of office and administrative buildings, development of urban and municipal projects, and transformation and expansion of existing buildings. The company offers its services to both private and public clients.

Claude Balmat Construction SA 

Le Châtelard-Près-Romont · Since 2007

Claude Balmat Construction SA carries out construction works in building (masonry and reinforced concrete), civil engineering (earthworks, roads and concrete structures), external landscaping, and perimeter insulation and painting. The company cooperates with other trades to provide an integrated total-contractor approach.

Coretra réalisations Sàrl 

Nyon · Since 2004

Coretra réalisations Sàrl operates as a complementary general contractor to an architectural practice, carrying out construction, renovation and transformation works. Its services include turnkey (entreprise totale) contracts with packaged pricing, project supervision and after‑sales service.

GM Bau Art GmbH 

Rickenbach B. Wil · Since 2004

The core activity of GM Bau Art GmbH is the planning, production and installation of doors, kitchens and other interior finishing elements for the private and commercial market. The company offers a wide range of products and services, including the manufacture of aluminum and steel entrance doors, interior doors, side entrance doors, wooden entrance doors, residential kitchens, country-style kitchens and kitchen renovation projects.