MS Contractor SA
Structural work in Onex at a lower cost
Your project is prepared with you.
A single contact who manages all the trades.
Album of our projectsLiving rooms, kitchens, bathrooms, facades and moreLet us talk about
your project.
Tell us about your project, which municipality and which spaces. Together, we clarify the work to plan before preparing the quote.






In Geneva, as in the rest of the canton, MS Contractor SA is with you. Let us talk about your project
A construction or a transformation in Onex starts with structures suited to the project. MS Contractor SA carries out the structural work and coordinates the reinforced concrete and masonry work with the other stages of the worksite. A description of the current condition and the result you are looking for helps prepare a concrete discussion about the work.
MS Contractor SA carries out the structural work needed for the construction and extension of buildings in Geneva, namely foundations, slabs, load-bearing walls and reinforced concrete elements.

Preparing the structures of your construction
- Reinforced concrete foundations, raft slabs and slabs
- Concrete walls and formwork
- Reinforcement and concreting
- Extensions and raised storeys
- Buried structures and retaining works
Organising the work and the access
We start by listening to your need, then come in Onex to assess the worksite. The offer details the planned work. During the work, you keep direct contact with the site manager.
Onex, from the Cité to the villas, structural work suited to each building
Before extending a house, raising it or opening a room onto the garden in Onex, the existing structure is examined. The surveys and probes needed are defined according to the project, to prepare the work from the actual condition of the structures.
An extension, a basement transformation or an opening in a wall may involve structural work in Onex. We prepare the work according to the project studies and the services concerned. Access, deliveries and provisions in the structures are specified before the work.
What is a self-supporting balcony?
It is a balcony that rests on its own posts, independent of the existing slab. It removes the thermal bridge of a cantilevered balcony and lends itself well to replacing an older structure, without weakening the structure of the house.
Your project in 4 steps
- You describe your project to us Using the quote form or by phone, with a few photos if you have them.
- We come on site Visit, survey of what exists and measurements, to price on a concrete basis.
- You receive a detailed offer Each item is described, so you can compare and decide with full clarity.
- We carry out the work A single contact follows the worksite until handover.
Why entrust your works to us
- Based in Geneva since 2012 Rue de la Servette 88, in the heart of the canton.
- Coordinated trades The contractors are brought together according to your worksite’s needs.
- A single contact One contact who coordinates all the trades.
- The whole canton We work in the 45 Geneva municipalities.
Let us talk about your project
For your structural work in Onex, describe your needs and we will contact you to arrange a visit.
Request your quote in Onex
Describe your project via our quote request form or on +41 79 557 14 50. A visit is arranged in Onex and a detailed offer is then sent to you. See also our Structural work in Geneva page and our renovation work in Onex.
