Hermance: observed built density
Municipality in the canton of Geneva · FSO no. 6625 · Parcel data as of July 2025
- Parcels
- 731
1 % of the canton
- Municipal zones
- 7
- Median utilization
- 10 %
Canton: 49 %
Switzerland: 10 %
- Median GFZ
- 0.09
Canton: 0.23
Switzerland: 0.09
- Median height
- 9.0 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.2
Canton: 2.4
Switzerland: 2.3
About Hermance
Hermance is a municipality in the canton of Geneva. The parcel data lists 731 parcels in 7 municipal zone types. The zone types with the most parcels are Zone agricole (320), Zone de développement 4B protégée (198) and Zone de développement 5 (188).
The median parcel is built to a volume utilization of 10 %; half of the parcels lie between 5 % and 107 %. The canton median is 49 %, so Hermance sits below it.
The median building height is 9.0 m at 2.2 floors, and the median floor-area ratio (GFZ) is 0.09. Parcels built in the last 20 years reach a mean volume utilization of 110 % (71 parcels), higher than the 79 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Zone agricole | 320 | 0 % |
| Zone de développement 4B protégée | 198 | 131 % |
| Zone de développement 5 | 188 | 63 % |
| Zone des bois et forêts | 16 | 0 % |
| Zone de verdure | 6 | 1 % |
| Zone de protection de la nature et du paysage | 2 | 84 % |
| Zone des eaux et des rives | 1 | 100 % |
Volume utilization (ratioV)
Of the 724 parcels with a value, half lie between 5 % and 107 %. The median is 10 % and the mean 73 %.
Share of parcels by range
- below 50 %59 %
- 50 % to below 100 %14 %
- 100 % to below 150 %10 %
- 150 % and above17 %
Floor-area ratio (GFZ)
Of the 724 parcels with a value, half lie between 0.05 and 0.54. The median is 0.09 and the mean 0.46.
Share of parcels by range
- below 0.5074 %
- 0.50 to below 1.009 %
- 1.00 to below 1.506 %
- 1.50 and above11 %
Building height
Of the 360 parcels with a value, half lie between 7.2 m and 10.8 m. The median is 9.0 m and the mean 8.9 m.
Share of parcels by range
- below 8 m35 %
- 8 m to below 12 m57 %
- 12 m to below 20 m8 %
- 20 m and above0 %
Number of floors
Of the 277 parcels with a value, half lie between 1.6 and 2.9. The median is 2.2 and the mean 2.2.
Share of parcels by range
- below 219 %
- 2 to below 341 %
- 3 to below 539 %
- 5 and above0 %
Building age cohorts
Mean volume utilization of the parcels built inside each window, from all years on record down to the last five. The windows overlap: the last 20 years include the last 5.
| Built in | Parcels | Mean utilization |
|---|---|---|
| All years | 731 | 79 % |
| Last 60 years | 210 | 106 % |
| Last 40 years | 156 | 97 % |
| Last 20 years | 71 | 110 % |
| Last 15 years | 48 | 101 % |
| Last 10 years | 30 | 117 % |
| Last 5 years | 20 | 129 % |
How to read this page
room shows observed built density: what has been built on the parcels, not what the zoning permits. Volume utilization (ratioV) compares the built volume of a parcel with the reference volume of its municipal zone type. The floor-area ratio (GFZ) is floor area divided by parcel area; building height and number of floors are taken from the buildings on a parcel. Figures pool all municipal zones of the area. Medians and quartiles are read from bins 10 points (ratioV), 0.1 (GFZ), 2 m (height) and 1 floor wide, so they are exact to within one bin; means are exact. A parcel counts in a distribution only when the parcel data has a value for it. The floors distribution leaves out parcels without a building (0 floors).