Walterswil (SO): observed built density
Municipality in the canton of Solothurn · FSO no. 2585 · Parcel data as of July 2025
- Parcels
- 768
1 % of the canton
- Municipal zones
- 14
- Median utilization
- 8 %
Canton: 29 %
Switzerland: 10 %
- Median GFZ
- 0.08
Canton: 0.10
Switzerland: 0.09
- Median height
- 9.0 m
Canton: 9.2 m
Switzerland: 9.5 m
- Median floors
- 2.0
Canton: 2.2
Switzerland: 2.3
About Walterswil (SO)
Walterswil (SO) is a municipality in the canton of Solothurn. The parcel data lists 768 parcels in 14 municipal zone types. The zone types with the most parcels are Landwirtschaftszone (324), 2-geschossige Wohnzone a (230) and Wald (124).
The median parcel is built to a volume utilization of 8 %; half of the parcels lie between 4 % and 92 %. The canton median is 29 %, so Walterswil (SO) sits below it.
The median building height is 9.0 m at 2.0 floors, and the median floor-area ratio (GFZ) is 0.08. Parcels built in the last 20 years reach a mean volume utilization of 130 % (70 parcels), higher than the 123 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landwirtschaftszone | 324 | 0 % |
| 2-geschossige Wohnzone a | 230 | 94 % |
| Wald | 124 | 0 % |
| Verkehrszone Strasse | 24 | 0 % |
| Dorfkernzone | 21 | 91 % |
| Reservezone Wohnzone, Mischzone, Kernzone und Zentrumszone | 11 | 0 % |
| Industriezone | 9 | 0 % |
| Zone für öffentliche Bauten und Anlagen | 7 | 50 % |
| Spezielle Landwirtschaftszone Hennebüel-Höhle | 5 | 36 % |
| Verkehrsfläche Strasse | 4 | 0 % |
| 2-geschossige Wohnzone b mit zusätzlicher maximaler Gebäudegrundfläche | 3 | 110 % |
| Grünzone | 3 | 0 % |
| Other zones (2) | 3 | - |
Volume utilization (ratioV)
Of the 749 parcels with a value, half lie between 4 % and 92 %. The median is 8 % and the mean 90 %.
Share of parcels by range
- below 50 %62 %
- 50 % to below 100 %16 %
- 100 % to below 150 %12 %
- 150 % and above10 %
Floor-area ratio (GFZ)
Of the 749 parcels with a value, half lie between 0.04 and 0.35. The median is 0.08 and the mean 0.17.
Share of parcels by range
- below 0.5089 %
- 0.50 to below 1.0011 %
- 1.00 to below 1.50< 1 %
- 1.50 and above< 1 %
Building height
Of the 289 parcels with a value, half lie between 7.4 m and 10.6 m. The median is 9.0 m and the mean 9.0 m.
Share of parcels by range
- below 8 m33 %
- 8 m to below 12 m58 %
- 12 m to below 20 m9 %
- 20 m and above0 %
Number of floors
Of the 231 parcels with a value, half lie between 1.7 and 2.4. The median is 2.0 and the mean 2.0.
Share of parcels by range
- below 212 %
- 2 to below 372 %
- 3 to below 516 %
- 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 | 768 | 123 % |
| Last 60 years | 235 | 167 % |
| Last 40 years | 161 | 145 % |
| Last 20 years | 70 | 130 % |
| Last 15 years | 52 | 108 % |
| Last 10 years | 32 | 112 % |
| Last 5 years | 8 | 86 % |
Open the map at Walterswil (SO)
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).