Your partner for interior fit-out in Switzerland. Delivering places where people and businesses thrive.
We deliver interior fit-out projects as a total contractor (Design & Build) or general contractor — with clear planning, precise execution, and reliable project delivery.
We strengthen your organisation by combining Swiss local expertise with international project experience — delivering interior fit-out projects reliably across Switzerland.
For 20 years, ISG (Switzerland) AG has been a trusted partner for bespoke, high-quality interior fit-out and refurbishment projects — for both national and international clients. Our strength lies in combining international know-how with strong local delivery capability. We work with a proven network of long-standing partner companies and specialist subcontractors, and manage quality, programme and cost through clear, consistent processes.
With our experience, we create clarity early on the topics that matter most. We align contracting and procurement strategy, design development and execution planning from the outset — so solutions are technically sound, commercially robust and operationally fit for purpose.
More than 80% of our projects are delivered for repeat clients. For us, this is the strongest proof of long-term trust and consistently high performance.
What we do - General Contractor - Design & Built Contractor
We deliver interior fit-out projects in a structured, turnkey way —
with planning, building services and execution under clear responsibility.
About us
ISG (Switzerland) AG is a Swiss total contractor and general contractor with a clear focus on interior fit-out. We deliver projects that perform in day-to-day use — functional, high-quality and delivered on programme, from planning through to turnkey handover.
Our work is built on partnership. We foster collaboration defined by trust, transparency and accountability — so the outcome is commercially sound, technically robust and well resolved in design.
We are ISG (Switzerland) AG. As a total contractor (Design & Build) or general contractor, we deliver interior fit-out projects that stand up to everyday use — functional, high-quality, and managed with reliability. For 20 years, we have delivered demanding projects across Switzerland.
Whether new build, refurbishment, or work within existing buildings, we provide turnkey solutions that are well resolved in design, technically sound, and commercially robust.
We support you end-to-end — from the initial idea through planning and interior architecture to execution and project leadership. Partnership, transparency and clear communication are central to how we work.
Our vision
We create spaces that make a difference — functional in everyday use, thoughtfully designed, and delivered responsibly. The result is environments that provide clarity, support collaboration, and stand the test of time.
Our mission
To bring our vision to life, we focus on:
Deep expertise in interior fit-out
We plan and deliver environments that work — for your people, your customers, and day-to-day operations.
Design and technical quality
Our interdisciplinary team brings together interior architecture, engineering and delivery to create solutions that are executed precisely and built to last.
Reliable partnerships
With proven partner companies and clear project leadership, we manage complex requirements with confidence — safeguarding quality, programme and cost.
Responsibility in sustainability and delivery
We choose materials and processes with care, reduce environmental impact, and act responsibly towards clients, partners and the communities in which we work.
Our services
Our services cover the full project journey — from initial concept through planning and interior architecture to execution, commissioning and turnkey handover. From the early design phase, we bring together functional, design and technical requirements to develop solutions precisely aligned with how you use the space and how your organisation operates — for offices, retail, hospitality and other working and guest environments.
During delivery, we provide structured, professional project management: clear control of programme and cost, consistent quality assurance, and efficient coordination of all parties involved. This reduces friction, improves decision-making, and creates transparency throughout the process.
Our aim is an outcome that performs in everyday use: flexible, comfortable and high-performing spaces — delivered to a high standard and ready for move-in.
Project set-up
Requirements definition / brief / space programme
Feasibility studies / options / budget estimate
Surveys and due diligence (building and technical), approvals and compliance checks (incl. hazardous materials, where relevant)
Design coordination and planning management (interior architecture + specialist engineers)
Interface coordination for MEP / IT / AV / security (where relevant)
Calculations / programme, resource and phasing planning
Cost optimisation / value engineering
Contract management (client, consultants, contractors)
Stakeholder management (client, landlord, operator)
Construction / delivery
Supplier and subcontractor management / tendering and procurement (incl. long-lead items)
Materials and sampling management (samples, mock-ups, approvals)
Project management / site management / on-site supervision
Logistics and phasing management (especially in live environments)
Budget control and reporting
Quality, health & safety, and environmental management (QHSE/HSE)
Risk management and reporting (identification, mitigation, tracking/escalation)
Change control (change management)
Variations, claims and commercial management
Commissioning & handover
Commissioning / functional testing / inspections and acceptance
Defects management and documentation (as-built drawings / handover documentation)
Operations and maintenance information (O&M) and user handover / training
Move-in / go-live coordination (where within scope)
Interface management with end users (communication, access, operational coordination)
Warranty / defects liability management (where agreed)
Our clients
We deliver interior fit-out projects for national and international clients — including across the following sectors:
Technology
Banking & financial services
Logistics
Pharmaceutical
Industrial
Retail
Coworking & flexible offices
Education
And more
Careers at ISG
Whether you are just starting out or bringing years of experience, ISG offers an environment where you can take on responsibility and grow professionally.
Our teams bring together different profiles, united by a shared standard: quality, reliability, and collaboration that works. We look for people who enjoy structured work, think ahead, and implement practical solutions.
We encourage initiative and create space for ideas. Every project is different — and that is what makes work at ISG both engaging and meaningful. If you contribute, you will see your impact: within the team, in the project, and in the outcome.
Interested? We would be pleased to meet you and discuss your opportunities at ISG.
Let's work together!
Your project starts with a conversation.
