Fit out services | ISG

Interior fit out services

Spaces reflect the brands they house. Today’s workplace must champion wellbeing and corporate values.

In a competitive global marketplace, standing out from the crowd is key. The work that goes into ensuring spaces nurture a brand-customer relationship doesn’t stop, and the journey to achieving an environment that empowers brands and their people to flourish isn’t without its challenges. But partnering with a trusted expert in high quality fit out, holds the key to making it a smooth one.

Your general contractor for interior fit out: high quality from a single source

ISG can draw upon extensive experience in collaborating with local and international organisations. For three decades, we have been delivering exceptional and award-winning projects in interior fit out and tenant fit out. From refurbishment and revitalisation to construction works in existing buildings – we work in partnership with our customers, accompanying them from the initial concept to turnkey construction.

Whatever the project size, scale or purpose, our experience and ability to deliver the full spectrum of client needs quickly allows brands to focus on what truly matters to them. With our focus on sustainability and efficiency, we transform your spaces into inspiring places for people and businesses. 

Are you looking for a trusted general contractor for your next fit out project?

Whether officesretail or public buildings – we understand the individual needs of our customers and realise them in perfect harmony. To achieve this goal, we offer customised solutions and put together a team with the right skills. We always keep an eye on time and budget to ensure a smooth project.

Besides the European headquarters in Frankfurt, ISG Germany has branches in Munich and Berlin. This enables our competent experts to offer flexible solutions tailored to your needs on-site.

  • Michael Schöneich

    Michael Schöneich

    Director Pre-Construction

  • Andrew Zacharias

    Andrew Zacharias

    Divisional Director Frankfurt & Luxembourg

  • Sara Purvis

    Sara Purvis

    Divisional Director Berlin

  • Lars Schmitt

    Lars Schmitt

    Divisional Director Munich

Find out more

Office Fit Out Berlin | ISG Germany

What makes ISG different?

  • Project management based on partnership
  • Many years of expertise in expansion projects for existing buildings
  • Unparalleled customer experience and satisfaction

Creating spaces that inspire people to be their best – through interior fit out, revitalisation and more

As a general contractor we create exceptional spaces that personify the brands at their heart, working flexibly to offer inventive solutions at every stage of the project - from planning and execution to turnkey handover. As a values-led organisation, we put people at the heart of everything we do. We understand how important it is for our clients’ brands to come to life in every detail of a fit out, and consider every project – whether it’s a high-tech financial trading floor or a quirky little restaurant – as an opportunity to create a legacy.

In 2020 we conducted an extensive piece of research, The Power of Place, with over 10,000 people in employment around the world. It confirms that when people feel their employer offers an excellent quality workspace, they’re much more likely to feel positive and loyal towards them. So, we ensure every space we create is poised to attract and enhance the lives of the people who use it.

More than just interior fit out: Great relationships are at the core of our success

Our clients often say they feel as though we’re a small and dedicated team, despite being a 2,800-strong international business. Nurturing great long-term relationships through collaboration is our mantra – whether that’s our clients, our supply chain or our people. It’s a little unconventional for a construction and fit out services company, and we like that. 

Our people’s pride in what they do and the collaborative approach that underpins our work is the secret behind our enduring relationships, and why clients come back. Care is key – we support before, during and after project delivery; it’s why we have developed a uniques customer excellence programme. We work with the world’s most respected brands, and with 60% of customers perpetually coming back, we’re unrivalled in bringing global spaces to life.

While working on a project for world-leading law firm, Freshfields Bruckhaus Deringer, MiX Consultancy  cited our ability to have the informal conversations, and promote openness and honesty without politics or hidden agendas, as being key to delivery of such a high-specification fit out. This is also confirmed by our long-term customer Microsoft, one of the largest technology companies globally, highlighting our customer-orientated approach where the team rise to the high-specification requirements, inspired by the architecture and complex technical fit out of the projects.

“It was a pleasure to work with an experienced, professional team and we would be happy to work with ISG in the future.”  

Terry White, Invesco

Office environment


Exceptional workplaces that personify the brands operating within them.

From hyper-scale, high-tech spaces to imaginative small spaces – as an interior fit-out company, we know how business must go on

Our portfolio spans all the spaces you can imagine, from social projects which support vulnerable people to working with some of the world’s most respected brands. We work with several global workplace solutions providers, like The Office Group, to provide workspaces for creative and forward-thinking working communities across the CEE region. We were delighted to hear that they felt our team brought the best of both worlds – fusing international knowledge and expertise with strong local experience.

As fit out contractors, we know the show must go on – more often than not, our experienced teams around the world support owners and occupiers by working in live environments where people can continue to work undisturbed. In addition to coordinating our comprehensive and local network of carefully selected subcontractors in all trades, we create suitable transitional solutions so that employees can carry out their activities without restrictions while the building is being refurbished, revitalised or modernised.

ISG has successfully completed numerous interior fit out projects over the last 30 years and has the expertise to manage each transition phase in a way that ensures the interior fit out is completed quickly and the quality of the workplace remains high for workers on site.

Contact us

Michael Schöneich

Michael Schöneich

Director Pre-Construction

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