Welschenrohr-Gänsbrunnen: observed built density
Municipality in the canton of Solothurn · FSO no. 2430 · Parcel data as of July 2025
- Parcels
- 894
1 % of the canton
- Municipal zones
- 19
- Median utilization
- 49 %
Canton: 29 %
Switzerland: 10 %
- Median GFZ
- 0.10
Canton: 0.10
Switzerland: 0.09
- Median height
- 9.2 m
Canton: 9.2 m
Switzerland: 9.5 m
- Median floors
- 2.0
Canton: 2.2
Switzerland: 2.3
About Welschenrohr-Gänsbrunnen
Welschenrohr-Gänsbrunnen is a municipality in the canton of Solothurn. The parcel data lists 894 parcels in 19 municipal zone types. The zone types with the most parcels are Zone für Ein- und Zweifamilienhäuser (267), Landwirtschaftszone (217) and Wohnzone 2-geschossig (120).
The median parcel is built to a volume utilization of 49 %; half of the parcels lie between 5 % and 121 %. The canton median is 29 %, so Welschenrohr-Gänsbrunnen sits above it.
The median building height is 9.2 m at 2.0 floors, and the median floor-area ratio (GFZ) is 0.10. Parcels built in the last 20 years reach a mean volume utilization of 133 % (66 parcels), higher than the 115 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Zone für Ein- und Zweifamilienhäuser | 267 | 103 % |
| Landwirtschaftszone | 217 | 0 % |
| Wohnzone 2-geschossig | 120 | 110 % |
| Verkehrszone Strasse | 58 | 0 % |
| Kernzone | 54 | 100 % |
| Wald | 54 | 0 % |
| Verkehrsfläche Strasse | 38 | 0 % |
| Zone für öffentliche Bauten und Anlagen | 22 | 23 % |
| Reine Gewerbezone | 13 | 31 % |
| Reservezone für Ein- und Zweifamilienhäuser | 12 | 0 % |
| Reservezone 2-geschossige Wohnzone | 10 | 52 % |
| Wohnzone 3-geschossig | 8 | 76 % |
| Other zones (7) | 21 | - |
Volume utilization (ratioV)
Of the 875 parcels with a value, half lie between 5 % and 121 %. The median is 49 % and the mean 102 %.
Share of parcels by range
- below 50 %50 %
- 50 % to below 100 %15 %
- 100 % to below 150 %20 %
- 150 % and above15 %
Floor-area ratio (GFZ)
Of the 875 parcels with a value, half lie between 0.05 and 0.42. The median is 0.10 and the mean 0.23.
Share of parcels by range
- below 0.5084 %
- 0.50 to below 1.0014 %
- 1.00 to below 1.502 %
- 1.50 and above< 1 %
Building height
Of the 480 parcels with a value, half lie between 7.6 m and 11.0 m. The median is 9.2 m and the mean 9.3 m.
Share of parcels by range
- below 8 m29 %
- 8 m to below 12 m57 %
- 12 m to below 20 m14 %
- 20 m and above0 %
Number of floors
Of the 323 parcels with a value, half lie between 1.6 and 2.4. The median is 2.0 and the mean 2.0.
Share of parcels by range
- below 218 %
- 2 to below 362 %
- 3 to below 521 %
- 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 | 894 | 115 % |
| Last 60 years | 281 | 140 % |
| Last 40 years | 189 | 139 % |
| Last 20 years | 66 | 133 % |
| Last 15 years | 51 | 120 % |
| Last 10 years | 28 | 94 % |
| Last 5 years | 15 | 91 % |
Open the map at Welschenrohr-Gänsbrunnen
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).