Canton
Facade insulation — Geneva
Amounts based on area and target performance.
Geneva support for energy renovation of the building envelope.
www.ge.chRoof renovation · Versoix
Roof renovation in Versoix
Indicative price, tips, grants and companies for your project in Versoix (Geneva).
At a glance
- Typical budget
- CHF 29'700 – CHF 65'400
- Midpoint
- CHF 44'900
- Grants found
- 1
- Nearby companies
- 4
Worked examples in Versoix
Small project
CHF 16'400 – CHF 37'600
Typical project
CHF 29'700 – CHF 65'400
Large project
CHF 49'600 – CHF 107'200
| Project | Quantity | Low | High | Per unit |
|---|---|---|---|---|
| Small project | 70 m² | CHF 16'400 | CHF 37'600 | CHF 400 |
| Typical project | 140 m² | CHF 29'700 | CHF 65'400 | CHF 300 |
| Large project | 245 m² | CHF 49'600 | CHF 107'200 | CHF 300 |
Computed with our estimator for Versoix (regional factor included), standard finish. Only the project size changes.
Cost split (typical project)
- Labour : CHF 22'500 (50 %)
- Materials : CHF 18'000 (40 %)
- Other costs : CHF 4'500 (10 %)
What the price covers
Included
- Supply and installation
- VAT
- Covering, scaffolding, insulation and removal according to answers
Not included
- Permits and architect fees
- Unexpected structural issues
- Possible subsidies
- New roof structure, asbestos, roof windows and structural reinforcement
Tips before you start
- Insulating the roof together with the covering is often eligible for the Buildings Programme.
- Existing solar panels must be removed and refitted: budget for it.
- At altitude, snow loads and frost influence material choice.
Your project in 5 steps
1. Estimate
Set a budget range with the estimator.
2. Grants
Apply before work starts.
3. Quotes
Compare at least 3 quotes.
4. Permit
Check with the municipality whether a permit is needed.
5. Works
Follow the site and do a written handover.
Grants and subsidies
Check amounts and conditions with the provider before signing: apply before work starts in most cases.
Versoix's housing stock in figures
The federal building register lists 1'406 residential buildings with 5'552 dwellings in Versoix. 51% were built before 1980, before serious insulation standards, and 74% are still heated with oil or gas.
Only 10.9% of residential buildings in Versoix report a solar thermal system in the register, so most roofs are still free. Photovoltaics are not recorded there; check the solar cadastre for your roof.
Age of residential buildings
- Before 191914 %
- 1919–19459 %
- 1946–19609 %
- 1961–197010 %
- 1971–19809 %
- 1981–199016 %
- 1991–200013 %
- 2001–201010 %
- Since 201110 %
Main heating energy
- Gas44 %
- Heating oil30 %
- Heat pump17 %
- Electricity4 %
- District heating3 %
- Wood2 %
- Solar thermal1 %
Heating and hot water: which energies?
| Energy | Heating | Hot water |
|---|---|---|
| Gas | 44 % | 40 % |
| Heating oil | 30 % | 27.5 % |
| District heating | 3 % | 1 % |
| Heat pump | 17 % | 3.9 % |
| Electricity | 4 % | 9.1 % |
| Wood | 2 % | 1 % |
| Solar thermal | 1 % | 10.3 % |
Each line gives the share of buildings using that energy, separately for heating and for hot water. The two columns do not always reach 100%: some buildings combine two systems, or reported none.
Type of heating system
- Boiler (unspecified)66.7 %
- Heat pump16.8 %
- Condensing boiler5.3 %
- Standard boiler3.4 %
- Heat exchanger (district)2.8 %
- Direct electric heaters2.3 %
- Central electric heating1.7 %
- Stove0.5 %
A standard non-condensing boiler is usually older and less efficient.
Houses or apartment buildings?
- Single-family houses67.1 %
- Two-dwelling houses7.2 %
- Apartment buildings (3+)25.7 %
10 % of buildings mix housing with shops or offices.
The typical building
- storeys (median)
- 3
- median footprint
- 118 m²
- median dwelling area
- 90 m²
Renovations, heritage and volumes
For your renovation plans in Versoix, the official building register data provides limited insights due to partial coverage. Information regarding heritage protection status and the year of renovation is not currently recorded. Furthermore, building volume data, measured under the SIA 416 standard, lacks specific median values to guide your project scale. Given the absence of these figures, it is essential to contact the municipality directly. Engaging with local authorities early is the best way to obtain the precise technical details required for planning heating or insulation works and ensuring your renovation cost estimates are accurate.
0
buildings flagged as protected
status known for 22 of 1'406 buildings; check with the municipality
Source : OFS — RegBL (export communal complet). Existing residential buildings; percentages of recorded values.
Companies in the area
Roland Brunner
1290 Versoix · about 0 km
Roland Brunner in Versoix is registered for sanitary installations, roofing and sheet metal work; the supplied website text concerns a different engraving business in Sarnen.
gravurenbrunner.chFrangi RDG SA
1290 Versoix · about 0 km
Frangi RDG SA is a general contractor based in Versoix specializing in construction, building renovation, painting, roofing, insulation, and outdoor landscaping.
frangirdg-sa.chMadimmo Sàrl
1290 Versoix · about 0 km
Versoix-based company active in real estate brokerage as well as sanitary installations, heating, and tinsmithery.
madimmo.chMICHEL GINDRE Sàrl
1239 Collex · about 3.2 km
Geneva-based company specializing in tinsmithing and roofing work for buildings.
spm-metallurgie.chSuggestions from the commercial register by distance and activity. Not an endorsement or partnership.
Useful local data
Rules of the canton of Geneva
These rules apply across the whole canton, not only in this town.
Permits
- Competent authority : Office de l'urbanisme
- Solar panels : Soumise à autorisation de construire, mais avec une procédure simplifiée si certaines conditions sont remplies (conformité au droit des zones, intégration paysagère et patrimoniale satisfaisante, puissance totale inférieure à 100 kVA). Procédure simplifiée possible par le biais d'une déclaration préalable, si les installations sont sur des toits en pente conformes ou sur des toits plats non visibles, ou dans certains périmètres d'aménagement (zone 4B, 5, 5A, 5B, 6).
- Heat pump : Les pompes à chaleur air-eau ou air-air nécessitent une autorisation de construire si leur puissance dépasse 10 kW. Si elles sont installées à l'intérieur, elles sont soumises à la LCI (Loi sur les constructions et les installations) et non à la LALPT (Loi sur l'aménagement du territoire et les constructions). Pour les pompes à chaleur de puissance inférieure ou égale à 10 kW, une déclaration préalable est nécessaire, accompagnée d'une attestation de conformité acoustique. Des exigences en matière de bruit sont mentionnées pour les installations extérieures, avec des valeurs limites d'immissions fixées par l'Ordonnance sur la protection contre le bruit (OPB) et des règles spécifiques du règlement d'application de la LCI (rLCI). Un bureau spécialisé en acoustique est souvent requis pour les projets complexes.
- Procedure : l'autorisation de construire
Source : Guide Installations Solaires et Thermopompes - Canton de Genève
Other works in Versoix
Kitchen renovationBathroom renovationNew flooringInterior paintingWindow replacementFacade insulationHeat pump installationSolar panelsHome solar batterySolar water heatingTerrace constructionFence installationStairwell renovationElevator installation or upgrade