La Sonnaz: observed built density
Municipality in the canton of Fribourg · FSO no. 2235 · Parcel data as of July 2025
The parcel data covers only part of the land in the canton of Fribourg, so figures here may be incomplete.
- Parcels
- 399
1 % of the canton
- Municipal zones
- 9
- Median utilization
- 86 %
Canton: 86 %
Switzerland: 10 %
- Median GFZ
- 0.34
Canton: 0.36
Switzerland: 0.09
- Median height
- 8.4 m
Canton: 8.9 m
Switzerland: 9.5 m
- Median floors
- 2.3
Canton: 2.3
Switzerland: 2.3
About La Sonnaz
La Sonnaz is a municipality in the canton of Fribourg. The parcel data lists 399 parcels in 9 municipal zone types. The zone types with the most parcels are Zone résidentielle à faible densité (227), Zone de centre (114) and Zone d'habitation rurale (41).
The median parcel is built to a volume utilization of 86 %; half of the parcels lie between 50 % and 113 %. The canton median is 86 %, close to the level of La Sonnaz.
The median building height is 8.4 m at 2.3 floors, and the median floor-area ratio (GFZ) is 0.34. Parcels built in the last 20 years reach a mean volume utilization of 115 % (133 parcels), higher than the 85 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Zone résidentielle à faible densité | 227 | 95 % |
| Zone de centre | 114 | 70 % |
| Zone d'habitation rurale | 41 | 67 % |
| Zone mixte | 6 | 40 % |
| Zone d'activité | 4 | 166 % |
| Zone d'activité équestre | 4 | 90 % |
| Zone d'activités de Pensier | 1 | 0 % |
| Zone d'intérêt public | 1 | 0 % |
| Zone spéciale du Swing-golf | 1 | 0 % |
Volume utilization (ratioV)
Of the 390 parcels with a value, half lie between 50 % and 113 %. The median is 86 % and the mean 82 %.
Share of parcels by range
- below 50 %25 %
- 50 % to below 100 %38 %
- 100 % to below 150 %29 %
- 150 % and above8 %
Floor-area ratio (GFZ)
Of the 390 parcels with a value, half lie between 0.22 and 0.45. The median is 0.34 and the mean 0.33.
Share of parcels by range
- below 0.5083 %
- 0.50 to below 1.0017 %
- 1.00 to below 1.501 %
- 1.50 and above0 %
Building height
Of the 312 parcels with a value, half lie between 7.1 m and 9.7 m. The median is 8.4 m and the mean 8.6 m.
Share of parcels by range
- below 8 m43 %
- 8 m to below 12 m54 %
- 12 m to below 20 m3 %
- 20 m and above0 %
Number of floors
Of the 269 parcels with a value, half lie between 1.8 and 2.9. The median is 2.3 and the mean 2.3.
Share of parcels by range
- below 211 %
- 2 to below 349 %
- 3 to below 540 %
- 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 | 399 | 85 % |
| Last 60 years | 286 | 100 % |
| Last 40 years | 247 | 103 % |
| Last 20 years | 133 | 115 % |
| Last 15 years | 108 | 120 % |
| Last 10 years | 78 | 126 % |
| Last 5 years | 43 | 135 % |
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).