The global contractor

Our expertise

The global contractor

Designing & building your facilities

Whether your future building needs to be complex, standardised, extra-large, multi-storey, eco-responsible or connected, GSE is here to help. We can act as your project manager or carry out the entire construction on a turnkey basis. Specialising in the design, construction, renovation and fitting out of buildings, GSE adapts and offers tailor-made solutions, whatever the size of the building, the specific features of the project or the type of activity.


For each project, a specific organisation is set up. This team of experts at your service includes a sales engineer, a project manager and a project engineer who monitors the site’s progress on a daily basis. We harness all the skills required for your project’s success internally: we have our own design directors, BIM managers, thermal and electrical engineers, safety and quality managers, purchasing engineers, legal and insurance managers, etc. GSE supports you from the design to the handover of your building.

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Creating smart, sustainable buildings

GSE has a dedicated team tasked with suggesting sustainable and eco-responsible solutions for each client. Frequent options include the use of bio-sourced materials and the operation of green construction sites. We also aim to give you maximum control over your energy consumption once the building is in use.


With the help of our Lab and our environmental certification engineers, we stay ahead of regulatory requirements and assist you in your certification processes and sustainable development priorities throughout the project.


Also within the Lab, our smartbuilding engineers create innovative solutions to prepare the building of tomorrow, which will be connected and communicating. Through EnerGiSE, a service that analyses buildings’ energy consumption, GSE advises you on how to make better use of resources and ensure optimum user comfort.



for land

Ahead of your project, GSE’s team of experts provide full assistance, including with comprehensive real estate solutions that will enable your future building to fit into its local environment.


and engineering

The engineers in GSE’s Surveys and Utilities departments suggest technical solutions adapted to your needs and your project’s constraints, for a personalised and optimised solution.


renovation, extension

GSE manages the construction, renovation or extension of your building, with firm commitments on price, quality and deadlines. Attention is paid to the environmental aspects of the construction site and of the future building in use.


Fit out

The GSE Lab offers exterior and interior design solutions focused on user wellbeing and high-quality working conditions, while optimising energy consumption.