Construction project management in Versoix
Planning building work? Apartment, house or building renovation, a new storey or a roof extension, running the project is our job.
In Versoix, residential buildings completed before 1946 outnumber those built after 2000. HMG Construction Management SA manages your renovation and conversion work there. The Geneva firm draws up the plans, files the permit application as a registered MPQ agent, works out the cost, appoints the contractors and supervises the site.
Your building work in Versoix
Versoix covers 1,050 hectares and has 14,035 residents at the end of 2025, or 1,336 people per square kilometre according to the statistical profile of Versoix. According to the cantonal table of buildings, the municipality has 1,453 residential buildings at 31 December 2025, including 914 single-family houses and 539 buildings with several dwellings.
The age of these buildings shapes the projects. 345 were completed before 1946, close to one in four, against 282 after 2000. Old stock therefore outweighs recent stock. In a house or small block of that generation you find floors that need strengthening, electrical and plumbing systems to be replaced entirely, and materials whose composition must be known before they are removed.
The 539 multi-dwelling buildings add the questions specific to blocks, such as the agreement of the PPE (the co-ownership) or oversight by a régie (property management agency). The official Versoix website (in French) gives details of municipal services.
Permits in Geneva
When an old building is converted in depth, two rules come up. The first concerns hazardous substances, covered by the cantonal page on renovating, converting or demolishing safely. The second concerns demolition. A complete demolition requires an application separate from the building application.
The Office des autorisations de construire (OAC) issues the permits. Our guide to building permits and procedures in Geneva shows which one to apply for, depending on whether the work stays inside or alters the building.
Types of work in Versoix
- House renovation, for 914 single-family houses, some of them from before 1946.
- Building conversion, when an old building has to be rethought entirely.
- Roof renovation, a priority on the 345 oldest buildings.
- Apartment renovation, in the 539 buildings with several dwellings.
- Facade renovation and insulation, to improve comfort without touching the layout.
- Medical practice fit-out, for a practitioner setting up in the municipality.
How HMG runs your project in Versoix
The appointment can take two forms. In the first, HMG is your only contact. It draws up the plans, files the permit application and runs the site through to handover. In the second, your architect signs the design and obtains the permit. HMG then takes over the file for construction and works with them to the end.
On an old building, surprises are expensive if they are found late. The firm therefore has the investigations and surveys done before tendering, and sets aside a separate budget line for contingencies. During the works, every variance is flagged, priced and put to you for decision. The site is run to SIA standards and no contractor has a financial tie to HMG.
Municipalities in the same area
Versoix is on the right bank. The firm also offers project management in these municipalities of the same area.
HMG projects in the canton of Geneva
Frequently asked questions
Are there many old buildings in Versoix?
Yes. OCSTAT records 345 residential buildings completed before 1946 out of 1,453, close to one in four. They outnumber the 282 buildings completed after 2000.
Are two applications needed to demolish and rebuild?
A complete demolition requires an application separate from the building application. The firm prepares both files and coordinates their timing.
How can overruns be avoided on an old house?
By carrying out the surveys before signing with contractors and pricing each trade separately. The firm then tracks committed costs and puts any change to you before it is carried out.
Related guides and pages
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