Onex, canton of Geneva

Earthworks, foundations, concrete and masonry in Onex at a lower cost

A new house or an extension in Onex goes through the structural work first. We carry out its packages according to the project plans, in coordination with the architect, the engineer and the other companies on the worksite.

Our projects
Structural work of a villa under construction with formwork in GenevaAlbum of our projectsLiving rooms, kitchens, bathrooms, facades and more

In brief

MS Contractor SA, a Geneva structural work company, carries out in Onex the earthworks, foundations, reinforced concrete structures, masonry and slabs of villas, detached houses and extensions. The work follows the architect’s and engineer’s plans provided by the client. The quote specifies the packages and quantities.

The context in Onex

The estate of tall buildings on the plateau overlooking the Rhône marks the landscape of Onex, in contrast with the old village and the villa districts. The riverbanks and large parks offer natural spaces right next to the homes. Buildings are handled with the property management agencies and tenants, while villas call for individual interventions.

Next to the estate, the villa districts of Onex lend themselves to extensions in masonry or reinforced concrete. Close neighbours mean dust and noise must be limited during earthworks and pours.

Foundations and raft slab in Onex

The foundations transfer the weight of the house to the ground. After the blinding concrete, the reinforcement is placed with its cover and checked by the engineer before concreting.

For a house with a basement, the buried reinforced concrete walls follow, with the provisions for networks.

Slabs and floors in Onex

Whether a ground-bearing slab or a slab on a raft, upper-floor slabs cast in place or floors with precast planks or hollow blocks, each level of the house rests on a slab set to the level agreed for the screeds and coverings.

Stairwell openings, service ducts and sleeves are placed before reinforcement, according to the installers’ plans.

Reinforced concrete walls, pillars and beams in Onex

Projects with large picture windows rest on a few highly loaded pillars and beams. Their reinforcement follows the engineer’s bar schedules and is checked before concreting.

Setting times before striking and loading are written into the schedule.

How a request runs in Onex

You describe the project, the plot and the stage of the plans. We contact you again to clarify the packages to price, then visit the plot. The quote is drawn up package by package, with the quantities and assumptions made.

After your written agreement, the schedule is set with the site management. The engineer’s checks come before each pour. A site manager follows the execution.

Our trades in Onex

Masonry in Onex Tiling in Onex Plastering in Onex Painting in Onex Parquet in Onex Joinery in Onex Plumbing in Onex Electrical work in Onex Heating in Onex Insulation in Onex Sound insulation in Onex Doors and windows in Onex Blinds and shutters in Onex Light renovation in Onex Roof structures in Onex Roofing in Onex Sheet metal work in Onex Facades in Onex Demolition in Onex Underpinning in Onex Pipework in Onex Earthworks in Onex Outdoor landscaping in Onex Terraces and paving in Onex Fences in Onex Sheds and outbuildings in Onex Access routes and car parks in Onex General contractor in Onex Shops in Onex

Earthworks and excavations Foundations and raft slab Reinforced concrete Masonry Slabs and floors House extension Works in Chêne-Bougeries Works in Chêne-Bourg Works in Collonge-Bellerive All municipalities

Frequently asked questions

Your questions in Onex

Can you live in the house during an extension in Onex?

In most cases, yes. The structural work of the annex is done from the outside. The opening of the connecting wall is planned with you and accompanied by dust protection.

Is a building permit needed for a villa or an extension in Onex?

Yes. A new house, an extension or a raised storey requires a building permit in the canton of Geneva. The application is filed by the owner or their architect. Structural work starts once the permit is final.

What documents are needed for a structural work quote in Onex?

The architect’s plans, the engineer’s plans if they exist, the geotechnical report and a description of the access to the plot. Without execution plans, the quote states the assumptions made and is adjusted when they are received.

Your project

A villa or an extension in Onex? Let us talk about the structural work.

Describe the project, the stage of the plans and access to the plot. MS Contractor SA contacts you again to clarify the packages to price.

Tell us about my project WhatsApp
Tell us about my project Version française