Renovating in Versoix: what to know
Planning works in Versoix, canton of Geneva? Before requesting quotes, local context helps: climate drives the value of insulation and heating, cantonal rules govern boiler replacement, and tax deductions can noticeably reduce the bill.
Local housing stock
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.
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
Dwellings by number of rooms
Dwellings per building
- 1 dwelling67.1 %
- 2 to 412 %
- 5 to 98.7 %
- 10 to 197 %
- 20 or more5.1 %
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.
Source : OFS — RegBL (export communal complet). Existing residential buildings; percentages of recorded values.
Rules of the canton of Geneva
These rules apply across the whole canton, not only in Versoix.
Choose your works in Versoix
Nearby municipalities : Genève · Carouge · Lancy · Meyrin · Vernier · Onex · Plan-les-Ouates · Thônex