Troinex: observed built density
Municipality in the canton of Geneva · FSO no. 6641 · Parcel data as of July 2025
- Parcels
- 999
1 % of the canton
- Municipal zones
- 6
- Median utilization
- 48 %
Canton: 49 %
Switzerland: 10 %
- Median GFZ
- 0.22
Canton: 0.23
Switzerland: 0.09
- Median height
- 8.3 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 2.4
Switzerland: 2.3
About Troinex
Troinex is a municipality in the canton of Geneva. The parcel data lists 999 parcels in 6 municipal zone types. The zone types with the most parcels are Zone de développement 5 (577), Zone agricole (316) and Zone de développement 4B protégée (59).
The median parcel is built to a volume utilization of 48 %; half of the parcels lie between 7 % and 93 %. The canton median is 49 %, close to the level of Troinex.
The median building height is 8.3 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.22. Parcels built in the last 20 years reach a mean volume utilization of 122 % (220 parcels), higher than the 78 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Zone de développement 5 | 577 | 64 % |
| Zone agricole | 316 | 0 % |
| Zone de développement 4B protégée | 59 | 137 % |
| Zone de développement 3 | 25 | 26 % |
| Zone des bois et forêts | 16 | 0 % |
| Zone sportive | 6 | 0 % |
Volume utilization (ratioV)
Of the 990 parcels with a value, half lie between 7 % and 93 %. The median is 48 % and the mean 74 %.
Share of parcels by range
- below 50 %51 %
- 50 % to below 100 %26 %
- 100 % to below 150 %11 %
- 150 % and above11 %
Floor-area ratio (GFZ)
Of the 990 parcels with a value, half lie between 0.07 and 0.43. The median is 0.22 and the mean 0.33.
Share of parcels by range
- below 0.5081 %
- 0.50 to below 1.0012 %
- 1.00 to below 1.503 %
- 1.50 and above4 %
Building height
Of the 593 parcels with a value, half lie between 6.8 m and 9.8 m. The median is 8.3 m and the mean 8.3 m.
Share of parcels by range
- below 8 m45 %
- 8 m to below 12 m48 %
- 12 m to below 20 m6 %
- 20 m and above0 %
Number of floors
Of the 559 parcels with a value, half lie between 1.6 and 2.8. The median is 2.1 and the mean 2.2.
Share of parcels by range
- below 221 %
- 2 to below 346 %
- 3 to below 533 %
- 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 | 999 | 78 % |
| Last 60 years | 511 | 110 % |
| Last 40 years | 389 | 112 % |
| Last 20 years | 220 | 122 % |
| Last 15 years | 186 | 132 % |
| Last 10 years | 133 | 145 % |
| Last 5 years | 81 | 167 % |
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).