Lostorf: observed built density
Municipality in the canton of Solothurn · FSO no. 2493 · Parcel data as of July 2025
- Parcels
- 2’102
2 % of the canton
- Municipal zones
- 26
- Median utilization
- 69 %
Canton: 29 %
Switzerland: 10 %
- Median GFZ
- 0.26
Canton: 0.10
Switzerland: 0.09
- Median height
- 8.4 m
Canton: 9.2 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 2.2
Switzerland: 2.3
About Lostorf
Lostorf is a municipality in the canton of Solothurn. The parcel data lists 2’102 parcels in 26 municipal zone types. The zone types with the most parcels are Landhauszone 1-2 Geschosse (498), Landwirtschaftszone (345) and Wohnzone mit niedriger Firsthöhe 1-2 Geschosse (236).
The median parcel is built to a volume utilization of 69 %; half of the parcels lie between 7 % and 107 %. The canton median is 29 %, so Lostorf sits above it.
The median building height is 8.4 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.26. Parcels built in the last 20 years reach a mean volume utilization of 104 % (209 parcels), higher than the 87 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landhauszone 1-2 Geschosse | 498 | 90 % |
| Landwirtschaftszone | 345 | 0 % |
| Wohnzone mit niedriger Firsthöhe 1-2 Geschosse | 236 | 79 % |
| Dichte Wohnzone 1-2 Geschosse | 186 | 95 % |
| Wohnzone 1-2 Geschosse | 147 | 110 % |
| Kernrandzone 1-2 Geschosse | 139 | 104 % |
| Verkehrszone Strasse | 130 | 0 % |
| Verkehrsfläche Strasse | 111 | 0 % |
| Wald | 87 | 0 % |
| Kernzone 1-2 Geschosse | 78 | 116 % |
| Zentrumszone 1-2 Geschosse | 37 | 60 % |
| Industrie- und Gewerbezone | 25 | 57 % |
| Other zones (14) | 83 | - |
Volume utilization (ratioV)
Of the 2’072 parcels with a value, half lie between 7 % and 107 %. The median is 69 % and the mean 68 %.
Share of parcels by range
- below 50 %42 %
- 50 % to below 100 %29 %
- 100 % to below 150 %20 %
- 150 % and above10 %
Floor-area ratio (GFZ)
Of the 2’072 parcels with a value, half lie between 0.06 and 0.43. The median is 0.26 and the mean 0.26.
Share of parcels by range
- below 0.5085 %
- 0.50 to below 1.0014 %
- 1.00 to below 1.501 %
- 1.50 and above< 1 %
Building height
Of the 1’288 parcels with a value, half lie between 7.0 m and 9.8 m. The median is 8.4 m and the mean 8.5 m.
Share of parcels by range
- below 8 m44 %
- 8 m to below 12 m52 %
- 12 m to below 20 m4 %
- 20 m and above< 1 %
Number of floors
Of the 1’060 parcels with a value, half lie between 1.7 and 2.4. The median is 2.1 and the mean 2.1.
Share of parcels by range
- below 213 %
- 2 to below 366 %
- 3 to below 521 %
- 5 and above< 1 %
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 | 2’102 | 87 % |
| Last 60 years | 975 | 144 % |
| Last 40 years | 673 | 114 % |
| Last 20 years | 209 | 104 % |
| Last 15 years | 121 | 103 % |
| Last 10 years | 72 | 105 % |
| Last 5 years | 32 | 103 % |
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).