Construction project management in Dardagny
Planning building work? Apartment, house or building renovation, a new storey or a roof extension, running the project is our job.
In Dardagny, where close to one residential building in two predates 1946, HMG Construction Management SA manages renovation and conversion work. The Geneva firm draws up the plans, files the permit application as a registered MPQ agent, prices each trade package, selects the contractors and supervises the site to SIA standards.
What gets renovated in Dardagny?
Dardagny is part of the Mandement sector. According to its municipal statistical overview, the municipality has 1,863 residents at the end of 2025 on 860 hectares, a density of 217 residents per km2. The OCSTAT building count lists 282 residential buildings at 31 December 2025.
Two figures set this stock apart. First, 134 of the 282 buildings were put up before 1946, close to half, while only 50 came after 2000. Second, there are 135 single-family houses, a little under one building in two. The other 147 hold several dwellings. Work here therefore often concerns old structures, sometimes shared between several occupants, where the roof, the facades and the services are several generations old.
Practical information from the town hall is on the Dardagny municipal website (in French).
Permits in Geneva
In an old building, the first step is the survey, not the drawing. The cantonal page Rénover, transformer ou démolir sans danger (in French) deals with asbestos, PCB and lead before works. This check comes ahead of tendering, because it changes the price and the organisation of the site.
Where the building is a residential block, the LDTR, the Geneva law on demolition, conversion and renovation of housing, also governs work inside the dwellings. Our guide to building permits and procedures in Geneva sets out the fast-track procedure and the full application.
Types of work in Dardagny
- Roof renovation, often the priority on the 134 buildings from before 1946.
- Facade renovation and insulation, which needs careful study on an old structure.
- House energy renovation, to cut the consumption of an ageing building.
- House renovation, for the 135 single-family houses in the municipality.
- Building conversion, when an existing volume takes on a new use.
- Attic conversion, to create floor area under a renewed roof.
How HMG manages your project in Dardagny
The firm can lead the whole project, from the first survey to the final account, drawing up the plans and the permit application itself. It can also come in after your architect. The architect designs the conversion and obtains the permit, then HMG organises and manages construction with them.
In old buildings, the firm has the investigations and surveys carried out before the budget is fixed, so that the estimate rests on the real state of the roof timbers, the walls and the pipework. The works are then ordered from the envelope inwards. Every week a site meeting brings the contractors together, and the minutes reach you with a statement of committed costs.
Municipalities in the same sector
The Mandement sector is made up of three municipalities. Here are the pages for the other two.
Projects by HMG in the Canton of Geneva
Frequently asked questions
Is the housing in Dardagny old?
Yes, to a large extent. OCSTAT records 134 buildings from before 1946 out of 282 residential buildings, close to half. Only 50 were built after 2000.
Is an asbestos survey needed before renovating?
Before work on an old building, the presence of asbestos, PCB or lead has to be checked. The Canton of Geneva has a dedicated page on the subject. HMG commissions this survey before approaching contractors.
Where do you start in an old house?
With what protects the building, meaning the structure, the roof and the facades. The technical installations come next, then the interior fit-out. That order avoids undoing new work.
Related guides and pages
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