Construction & Project Management

IPZ Ingenieure + Planer AG 

Disentis/Mustér · Since 2019

The core activity of the company "ipz ingenieure + planer ag" is the provision of engineering services in the field of construction, particularly in the areas of civil engineering, road construction, natural hazards, hydraulic engineering, urban drainage and project development. The company provides solutions for demanding construction tasks and supports customers in the development of innovative solutions.

iQa consulting Jérôme Quennoz 

Morges · Since 2021

The company iQa Consulting provides consulting services for construction projects and renovations, particularly in the selection of materials and the implementation of projects.

ISC Management GmbH 

Baar · Since 2003

The core activity of ISC Management GmbH is the planning, development and realization of individual architectural and construction projects, including high-rise construction, interior architecture, construction management and fire protection. The company offers comprehensive services, from the initial idea to the handover of the keys, and focuses on creating functional and inspiring spaces that meet the needs and wishes of its customers.

iscw Projektmanagement AG 

Thun · Since 2020

The company's core activity is providing services in the field of project management and owner representation for construction projects, particularly in the sectors of building construction and infrastructure. This includes, among other things: construction trust, project management, overall project management, owner representation, cost management, schedule management, quality management, procurement procedures, project development, risk management, and advisory expertise in the areas of corporate management and development. The company supports customers in planning, implementing, and monitoring construction projects, offering comprehensive services to ensure the goals and interests of customers are met.

Isofi GmbH 

Kloten · Since 2024

Isofi GmbH provides customized insulation solutions for heating systems, sanitary installations, refrigeration and air‑conditioning systems, ventilation, and fire protection. Services include consultation and the execution of insulation work to improve energy efficiency, comfort, and safety.

Isolfin Holding SA 

Lugano · Since 2012

The core activity of Isolfin is to provide services in the fields of insulation, asbestos removal, access management, fire protection, sandblasting and coating, non-destructive testing and mechanical installations, particularly for the petrochemical, shipbuilding, refining and energy industries.

itreas GmbH 

Biel/Bienne · Since 2004

The core activity of itreas GmbH is construction management and consulting in all construction-related matters, particularly in the renovation sector, with a special focus on sustainability, building ecology and energy efficiency.

Jenny & Partner Baumanagement AG 

Weinfelden · Since 2011

The core activity of Jenny & Partner AG is construction management, particularly general contracting, with a focus on: * Consulting (construction consulting) * Planning (construction planning, architecture) * Building (execution of construction projects) * Sales (marketing of properties) The company thus offers a comprehensive range of services throughout the entire construction process.

Jenzer Baumanagement GmbH 

Liestal · Since 2021

The core activity of Jenzer Baumanagement GmbH is construction management, particularly the planning, control and monitoring of construction projects, including cost estimation, scheduling, quality management, occupational safety and client representation.

JEROME GENTIL CONSTRUCTIONS Sàrl 

Grand-Lancy · Since 2021

The core activity of Gentil Constructions is the planning, coordination and execution of construction projects, including architecture, construction supervision and project management. The company offers a comprehensive service that covers all phases of a construction project, from project definition and budgeting to realization and handover of the completed building.

JL Baumanagement GmbH 

Wallisellen · Since 2020

The core activity of JL Baumanagement GmbH is the planning and realization of construction projects of all kinds, from the idea to the turnkey handover and beyond.

JMF CONSULTING Sàrl 

Sion · Since 2012

JMF CONSULTING Sàrl is a consulting firm providing services to the construction and civil engineering sector, including owner's representative (AMO), advisory services for construction and production companies, succession advice, expert assessments, mediation and development support.

Joe Zihlmann AG 

Oberarth · Since 2000

The core activity of Joe Zihlmann AG is the provision of services in the field of project and construction management, particularly in the following areas: Construction Management: Coordination and control of construction projects to ensure that everything runs according to plan and the construction site is a safe working environment. Project Management/Client Representation: Representation of clients vis-à-vis authorities, planners, companies, and third parties, as well as taking over operational project management. Construction Consulting: Development of renovation or renewal concepts based on condition analyses, consulting on construction projects, monitoring of ongoing work, and clarification of construction defects or damages. Overall, the company focuses on the professional accompaniment and control of construction projects to ensure optimal project execution.

John Sisk & Son GmbH 

Zug · Since 2022

John Sisk & Son GmbH is a construction company delivering projects in the commercial, life sciences, data centres, infrastructure, residential and healthcare sectors. It provides construction and engineering services, including innovation and design, digital project delivery and strategic project services.

Jörg Ryf Müller 

Attiswil · Since 2007

The core activity of Jörg Ryf Müller Architektur und Baumanagement is the provision of architecture and construction management services, particularly in the areas of: new buildings, renovations, expansions and refurbishments, extensions, additions, commercial buildings, and interior design. The company offers architectural and construction services with a focus on quality, economy, and ecology.

Josef Gartner Switzerland AG 

Arlesheim · Since 1998

The core activity of Josef Gartner GmbH is the planning, design and installation of technically demanding facades for buildings. The company offers a wide range of services, including the development of facade solutions, the execution of facade projects and the manufacture of facade components.

Jud Bauberatung GmbH 

Inwil · Since 2023

Juliano Gebäudetechnik GmbH 

Enggistein · Since 2015

The core activity of Juliano Gebäudetechnik GmbH is the planning, coordination and implementation of projects in the field of building technology, particularly in the areas of sanitary technology, heating, ventilation, electrical engineering and drainage concepts. The company provides comprehensive support in strategic planning, design, tendering, realization and commissioning of building technology projects.

JUNGBACH, Inhaber Jung 

St. Gallen · Since 2017

JUNGBACH, Inhaber Jung is an interdisciplinary studio that combines design, construction and craftsmanship to develop, produce and install one-off metal objects for architecture, design and art.

Junod GmbH Bauagentur 

Ladir · Since 2018

Junod GmbH Bauagentur is a construction agency providing construction management, site supervision and project consulting. Services include managing projects with general contractors, quality and material control, cost and schedule reviews, and preparation of restructuring and investment plans while coordinating planners and trades through digital workflows.