Perly-Certoux: observed built density
Municipality in the canton of Geneva · FSO no. 6632 · Parcel data as of July 2025
- Parcels
- 727
1 % of the canton
- Municipal zones
- 6
- Median utilization
- 9 %
Canton: 49 %
Switzerland: 10 %
- Median GFZ
- 0.09
Canton: 0.23
Switzerland: 0.09
- Median height
- 10.0 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.7
Canton: 2.4
Switzerland: 2.3
About Perly-Certoux
Perly-Certoux is a municipality in the canton of Geneva. The parcel data lists 727 parcels in 6 municipal zone types. The zone types with the most parcels are Zone de développement 4B protégée (352), Zone agricole (350) and Zone de développement 3 (15).
The median parcel is built to a volume utilization of 9 %; half of the parcels lie between 5 % and 108 %. The canton median is 49 %, so Perly-Certoux sits below it.
The median building height is 10.0 m at 2.7 floors, and the median floor-area ratio (GFZ) is 0.09. Parcels built in the last 20 years reach a mean volume utilization of 121 % (55 parcels), higher than the 79 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Zone de développement 4B protégée | 352 | 96 % |
| Zone agricole | 350 | 0 % |
| Zone de développement 3 | 15 | 18 % |
| Zone des bois et forêts | 6 | 0 % |
| Zone de verdure | 2 | 0 % |
| Zone sportive | 2 | 182 % |
Volume utilization (ratioV)
Of the 720 parcels with a value, half lie between 5 % and 108 %. The median is 9 % and the mean 75 %.
Share of parcels by range
- below 50 %61 %
- 50 % to below 100 %11 %
- 100 % to below 150 %12 %
- 150 % and above16 %
Floor-area ratio (GFZ)
Of the 720 parcels with a value, half lie between 0.05 and 0.82. The median is 0.09 and the mean 0.56.
Share of parcels by range
- below 0.5066 %
- 0.50 to below 1.0015 %
- 1.00 to below 1.509 %
- 1.50 and above9 %
Building height
Of the 347 parcels with a value, half lie between 8.2 m and 12.5 m. The median is 10.0 m and the mean 10.3 m.
Share of parcels by range
- below 8 m22 %
- 8 m to below 12 m50 %
- 12 m to below 20 m27 %
- 20 m and above0 %
Number of floors
Of the 306 parcels with a value, half lie between 1.8 and 3.4. The median is 2.7 and the mean 2.6.
Share of parcels by range
- below 216 %
- 2 to below 326 %
- 3 to below 556 %
- 5 and above2 %
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 | 727 | 79 % |
| Last 60 years | 219 | 148 % |
| Last 40 years | 106 | 133 % |
| Last 20 years | 55 | 121 % |
| Last 15 years | 39 | 125 % |
| Last 10 years | 25 | 133 % |
| Last 5 years | 9 | 117 % |
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).