Le Grand-Saconnex: observed built density
Municipality in the canton of Geneva · FSO no. 6623 · Parcel data as of July 2025
- Parcels
- 1’449
2 % of the canton
- Municipal zones
- 9
- Median utilization
- 72 %
Canton: 49 %
Switzerland: 10 %
- Median GFZ
- 0.32
Canton: 0.23
Switzerland: 0.09
- Median height
- 7.8 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.2
Canton: 2.4
Switzerland: 2.3
About Le Grand-Saconnex
Le Grand-Saconnex is a municipality in the canton of Geneva. The parcel data lists 1’449 parcels in 9 municipal zone types. The zone types with the most parcels are Zone de développement 5 (913), Zone de développement 3 (258) and Zone de développement 4B protégée (143).
The median parcel is built to a volume utilization of 72 %; half of the parcels lie between 9 % and 115 %. The canton median is 49 %, so Le Grand-Saconnex sits above it.
The median building height is 7.8 m at 2.2 floors, and the median floor-area ratio (GFZ) is 0.32. Parcels built in the last 20 years reach a mean volume utilization of 119 % (270 parcels), higher than the 91 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Zone de développement 5 | 913 | 75 % |
| Zone de développement 3 | 258 | 82 % |
| Zone de développement 4B protégée | 143 | 102 % |
| Zone de développement industriel et artisanal | 56 | 0 % |
| Zone agricole | 36 | 0 % |
| Zone de verdure | 26 | 0 % |
| Zone ferroviaire | 9 | 2 % |
| Zone sportive | 7 | 6 % |
| Zone des bois et forêts | 1 | 0 % |
Volume utilization (ratioV)
Of the 1’436 parcels with a value, half lie between 9 % and 115 %. The median is 72 % and the mean 88 %.
Share of parcels by range
- below 50 %37 %
- 50 % to below 100 %32 %
- 100 % to below 150 %15 %
- 150 % and above16 %
Floor-area ratio (GFZ)
Of the 1’436 parcels with a value, half lie between 0.09 and 0.62. The median is 0.32 and the mean 0.65.
Share of parcels by range
- below 0.5069 %
- 0.50 to below 1.0016 %
- 1.00 to below 1.506 %
- 1.50 and above10 %
Building height
Of the 786 parcels with a value, half lie between 6.6 m and 9.6 m. The median is 7.8 m and the mean 9.3 m.
Share of parcels by range
- below 8 m54 %
- 8 m to below 12 m32 %
- 12 m to below 20 m9 %
- 20 m and above5 %
Number of floors
Of the 865 parcels with a value, half lie between 1.6 and 3.0. The median is 2.2 and the mean 2.4.
Share of parcels by range
- below 221 %
- 2 to below 343 %
- 3 to below 529 %
- 5 and above7 %
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 | 1’449 | 91 % |
| Last 60 years | 768 | 114 % |
| Last 40 years | 625 | 117 % |
| Last 20 years | 270 | 119 % |
| Last 15 years | 184 | 120 % |
| Last 10 years | 125 | 126 % |
| Last 5 years | 55 | 130 % |
Open the map at Le Grand-Saconnex
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).