Construction project management in Corsier
Planning building work? Apartment, house or building renovation, a new storey or a roof extension, running the project is our job.
HMG Construction Management SA manages building work in Corsier, a municipality where the single-family house clearly dominates. The independent Geneva firm draws up the plans, files the permit application as a registered MPQ agent, works out the cost, puts contractors in competition and runs the site to SIA standards until handover.
What work should you expect in Corsier?
The OCSTAT profile of Corsier records 2,278 residents at the end of 2025 on 274 hectares, or 832 residents per km2. The cantonal table of buildings by category and construction period counts 542 residential buildings at 31 December 2025. Of these, 449 are single-family houses, which is more than four in five.
The age of the stock is mixed. 151 buildings went up after 2000, more than a quarter of the total, and 86 date from before 1946. The majority, 305 buildings, sits between the two. For an owner this means three families of project. A recent house is reworked inside. A house from the middle decades often needs its envelope and services brought up to date. An old house starts with a survey.
The official Corsier website (in French) covers the services of the town hall.
Permits in Geneva
The canton issues building permits through the Office des autorisations de construire (OAC), its building permit office. According to the official page on permit types, the fast-track procedure, known as APA, applies to a building in the fifth zone (the villa zone) without any exemption, a villa for example, and to interior changes in an existing building. Anything outside that scope follows a full application, called DD (demande définitive).
The zoning of your plot is therefore the first thing to check. Our guide to building permits and procedures in Geneva explains how to go about it.
Types of work in Corsier
- Villa renovation, the typical project in a municipality with 449 single-family houses.
- House extension, to add a living room on the ground floor.
- Adding a storey, when the plot leaves no room to build outwards.
- House energy renovation, for the 305 buildings put up between 1946 and 2000.
- Kitchen renovation, a common request in the 151 buildings that postdate 2000.
How HMG manages your project in Corsier
You can hand the whole project to HMG. The firm then draws the plans, files the application, prices the works and appoints the contractors. You can also keep your own architect for the design and the permit. In that case HMG takes over the file once the permit is granted and manages construction alongside the architect.
On a villa, management rests first on a detailed estimate broken down by trade. Each package is then tendered to several contractors and the bids are compared line by line. Because the firm has no financial tie to any contractor, the recommendation you receive depends only on price, references and the stated lead times.
Municipalities in the same sector
Corsier belongs to the left bank sector, between the Arve and the lake. The firm offers the same service in the following municipalities of that sector.
Projects by HMG in the Canton of Geneva
Frequently asked questions
What share of buildings in Corsier are single-family houses?
According to OCSTAT, 449 of the 542 residential buildings in the municipality were single-family houses at 31 December 2025. That is more than four buildings in five. The other 93 hold several dwellings.
Can you add a storey to a villa in Corsier?
It is a matter of building rules and of structure. The rules that apply depend on the zoning of the plot, and the existing structure has to be able to carry the load. HMG checks both points before pricing the project.
Who files the permit application?
If you hand the whole project to the firm, HMG files it as a registered MPQ agent. If you have an architect, the architect does so, and the firm steps in for the construction phase.
Related guides and pages
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