Construction & Architecture

OOS AG 

Zurich · Since 2000

The company OOS AG is an architectural firm specializing in the planning and realization of buildings, infrastructure projects, and interior architecture. The core activities include: Architecture: planning and realization of new buildings, conversions, renovations, and revitalizations of buildings; Interior architecture: planning and realization of interior spaces, including brand architecture and sustainable solutions; Infrastructure architecture: planning and realization of infrastructure projects, such as logistics centers and transportation structures; Special buildings: planning and realization of special buildings, such as pavilions and exhibition buildings; Sustainable architecture: planning and realization of energy-efficient and sustainable buildings, including zero-energy buildings. The company also offers specialized services such as BIM support, CO2 dashboard, and building management to improve the efficiency and sustainability of buildings.

Opus Architekten AG 

Belp · Since 1987

The core activity of Opus Architekten is the planning and execution of construction projects, particularly in the field of architecture, incorporating phases such as planning, execution and construction management, with a focus on residential and commercial buildings, renovations and refurbishments, as well as the creation of construction project plans and the provision of architectural and execution services.

OPUSFIT GmbH 

St. Gallen · Since 2016

The core activity of OPUSFIT GmbH, also operating under the name Bohr24, is concrete cutting technology, particularly the cutting of concrete, reinforced concrete and masonry using high-performance diamond tools, as well as drilling and sawing of concrete.

Origami Rénovation Sàrl 

Senarclens · Since 2024

The company Origami offers high-quality renovation services for private individuals, including project management, conception, planning and execution of renovation work. They provide a comprehensive service that ranges from the initial consultation to the completion of the project, with a single point of contact for the customer.

Orllati Désamiantage (VD) SA 

Bioley-Orjulaz · Since 2002

Orllati Désamiantage (VD) SA provides asbestos removal and building remediation services, including decontamination for PCB, HBCD and lead, de‑flocculation, drying after water damage, special treatments and thermographic inspections. Operations use dedicated air extraction equipment and maintain on‑site clean‑up (white) areas at depots such as Geneva and Bioley‑Orjulaz.

Orllati Environnement (VD) SA 

Bioley-Orjulaz · Since 2011

Orllati Environnement (VD) SA provides preparatory and construction services and environmental remediation, including asbestos removal, contamination remediation (e.g. PCB, lead), concrete recycling into aggregates and surface geothermy projects.

Orllati Granulats & Béton SA 

Bioley-Orjulaz · Since 2016

Orllati Granulats & Béton SA crushes concrete and processes mineral materials, washing and recycling them into reusable construction aggregates. The company operates material recovery and processing facilities and promotes the substitution of natural aggregates with recycled concrete aggregates in mixes.

Orllati (VD) SA 

Bioley-Orjulaz · Since 2006

O. Rochat Architectes sàrl 

Lausanne · Since 2013

The core activity of O Rochat Architectes is the provision of architectural services.

OSRI AG 

Lucerne · Since 2022

The core activity of OSRI AG is to support municipalities, authorities and private individuals in shaping living spaces, particularly through: organizational support, spatial process design, process and stakeholder management, organization, moderation and documentation of participation processes, consulting and accompanying political processes, and development of utilization concepts, special use planning, area development and volume studies. OSRI AG supports its customers in spatial (further) development, especially in the areas of urban planning, architecture and monument preservation.