Troistorrents
Municipality in the canton of Valais · FSO no. 6156
Parcel data from Nov 2026, statistics computed on 29 Oct 2026.
Open map at the Troistorrents centerThe parcel data lists 4’265 parcels in Troistorrents, covering 37 km². 63.2% of them have at least one registered building. The median parcel measures 1’004 m².
Key figures
- Parcels
- 4’265
- 0.7% of the canton
- Total area
- 37 km²
- 1% of the canton
- Median area
- 1’004 m²
- Canton: 518 m²
- Switzerland: 881 m²
- Built share
- 63.2%
- Canton: 26%
- Switzerland: 51%
- Median year built
- 1983
- Canton: 1980
- Switzerland: 1975
About Troistorrents
Troistorrents ranks 50th of 122 municipalities in the canton of Valais by number of parcels and holds 0.7% of the canton's parcels on 1% of its area. The median parcel in Troistorrents measures 1’004 m², larger than the canton median of 518 m². Troistorrents is more built-up than the canton as a whole: 63.2% of its parcels have a building, against 26% across the canton.
The zones with the most parcels are Zone agricole (30.2%), Zone de moyenne densité (22.6%) and Zone de faible densité (11.7%). In total, Troistorrents uses 34 zone designations.
According to the building register, Troistorrents has 3’544 buildings with 4’239 dwellings, 1.2 dwellings per building on average. Most residential buildings are single-family houses (75.6%). Non-residential buildings account for 30.8% of all buildings.
Built parcels most often have their newest building from 1981 to 2000 (21.9% of them), and 30.6% have one from 2001 or later. The median year built, 1983, is close to that of the canton as a whole (1980).
Built and unbuilt parcels
Built: 2’695 (63.2%)
Unbuilt: 1’570 (36.8%)
Parcels by zone
| Zone | Parcels | Area | Built |
|---|---|---|---|
| Zone agricole | 1’289 | 15.37 km² | 47.9% |
| Zone de moyenne densité | 966 | 1.00 km² | 82.1% |
| Zone de faible densité | 498 | 0.40 km² | 86.1% |
| Aire forestère | 449 | 7.90 km² | 22.7% |
| Zone de moyenne densité à aménager | 220 | 0.40 km² | 67.3% |
| Zone de faible densité à aménager | 211 | 0.28 km² | 71.1% |
| Zone du village | 165 | 0.10 km² | 82.4% |
| Zone du centre | 128 | 0.10 km² | 79.7% |
| Zone d'extension du centre | 64 | 0.08 km² | 84.4% |
| Zone d'extension du village | 35 | 0.03 km² | 80.0% |
| Ligne ferroviaire | 34 | 0.06 km² | 14.7% |
| Zone de constructions publiques A | 31 | 0.03 km² | 48.4% |
| Other zones (22 labels) | 143 | 11.15 km² | 62.2% |
| No zone | 32 | 0.04 km² | 84.4% |
Zone names are the municipal designations. A canton lists each wording separately.
Building stock
The building register lists 3’544 buildings with 4’239 dwellings here; 1’804 of them are single-family houses.
- Buildings
- 3’544
- Dwellings
- 4’239
- Single-family houses
- 1’804
- Building volume
- 2.9 million m³
Buildings by category
Construction periods
Built parcels by construction period of their newest building
Maps and geodata for Troistorrents
geopool works as a GIS and geoportal for Troistorrents. Its parcel map shows the parcels of the official cadastral survey with their area, their zone from the municipal zoning plan and their buildings, on swisstopo maps. Building zones, the property map and the geodata of each parcel open on the geopool map. The ÖREB extract of a parcel (public-law restrictions on landownership) is in lookup.