Riddes: observed built density
Municipality in the canton of Valais · FSO no. 6139 · Parcel data as of July 2025
The parcel data covers only part of the land in the canton of Valais, so figures here may be incomplete.
- Parcels
- 5’528
1 % of the canton
- Municipal zones
- 27
- Median utilization
- 8 %
Canton: 7 %
Switzerland: 10 %
- Median GFZ
- 0.07
Canton: 0.07
Switzerland: 0.09
- Median height
- 7.7 m
Canton: 8.4 m
Switzerland: 9.5 m
- Median floors
- 2.2
Canton: 2.3
Switzerland: 2.3
About Riddes
Riddes is a municipality in the canton of Valais. The parcel data lists 5’528 parcels in 27 municipal zone types. The zone types with the most parcels are Zone de petits chalets T3 (1’194), Zone agricole protégée (908) and Zone agricole de plaine (781).
The median parcel is built to a volume utilization of 8 %; half of the parcels lie between 4 % and 86 %. The canton median is 7 %, so Riddes sits above it.
The median building height is 7.7 m at 2.2 floors, and the median floor-area ratio (GFZ) is 0.07. Parcels built in the last 20 years reach a mean volume utilization of 217 % (1’101 parcels), higher than the 124 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Zone de petits chalets T3 | 1’194 | 17 % |
| Zone agricole protégée | 908 | 0 % |
| Zone agricole de plaine | 781 | 0 % |
| Zone agricole de coteau | 546 | 0 % |
| Zone villas | 545 | 91 % |
| Zone de chalets T2 | 327 | 59 % |
| Zone habitations collectives | 233 | 80 % |
| Cadastre forestier | 192 | 0 % |
| Zone T1 à haut taux d'occupation | 189 | 75 % |
| Zone hameau | 145 | 96 % |
| Zone village | 141 | 212 % |
| Zone d'affectation differee | 51 | 0 % |
| Other zones (15) | 276 | - |
Volume utilization (ratioV)
Of the 5’485 parcels with a value, half lie between 4 % and 86 %. The median is 8 % and the mean 84 %.
Share of parcels by range
- below 50 %67 %
- 50 % to below 100 %12 %
- 100 % to below 150 %10 %
- 150 % and above11 %
Floor-area ratio (GFZ)
Of the 5’485 parcels with a value, half lie between 0.04 and 0.19. The median is 0.07 and the mean 0.15.
Share of parcels by range
- below 0.5092 %
- 0.50 to below 1.005 %
- 1.00 to below 1.502 %
- 1.50 and above1 %
Building height
Of the 2’014 parcels with a value, half lie between 6.5 m and 9.3 m. The median is 7.7 m and the mean 8.0 m.
Share of parcels by range
- below 8 m55 %
- 8 m to below 12 m39 %
- 12 m to below 20 m5 %
- 20 m and above< 1 %
Number of floors
Of the 1’418 parcels with a value, half lie between 1.8 and 2.8. The median is 2.2 and the mean 2.3.
Share of parcels by range
- below 210 %
- 2 to below 355 %
- 3 to below 533 %
- 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 | 5’528 | 124 % |
| Last 60 years | 1’762 | 273 % |
| Last 40 years | 1’466 | 261 % |
| Last 20 years | 1’101 | 217 % |
| Last 15 years | 945 | 229 % |
| Last 10 years | 174 | 133 % |
| Last 5 years | 89 | 138 % |
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).