Bettlach: observed built density
Municipality in the canton of Solothurn · FSO no. 2543 · Parcel data as of July 2025
- Parcels
- 1’828
2 % of the canton
- Municipal zones
- 18
- Median utilization
- 73 %
Canton: 29 %
Switzerland: 10 %
- Median GFZ
- 0.31
Canton: 0.10
Switzerland: 0.09
- Median height
- 9.1 m
Canton: 9.2 m
Switzerland: 9.5 m
- Median floors
- 2.2
Canton: 2.2
Switzerland: 2.3
About Bettlach
Bettlach is a municipality in the canton of Solothurn. The parcel data lists 1’828 parcels in 18 municipal zone types. The zone types with the most parcels are Wohnzone, 2-geschossig b (557), Landwirtschaftszone (335) and Wohnzone, 3-geschossig (216).
The median parcel is built to a volume utilization of 73 %; half of the parcels lie between 7 % and 115 %. The canton median is 29 %, so Bettlach sits above it.
The median building height is 9.1 m at 2.2 floors, and the median floor-area ratio (GFZ) is 0.31. Parcels built in the last 20 years reach a mean volume utilization of 111 % (160 parcels), higher than the 77 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone, 2-geschossig b | 557 | 92 % |
| Landwirtschaftszone | 335 | 0 % |
| Wohnzone, 3-geschossig | 216 | 99 % |
| Wohnzone, 2-geschossig a | 167 | 134 % |
| Verkehrszone Strasse | 141 | 0 % |
| Wohnzone, 2-geschossig c | 130 | 90 % |
| Verkehrsfläche Strasse | 98 | 0 % |
| Gewerbezone mit Wohnnutzung | 51 | 124 % |
| Kernzone | 44 | 128 % |
| Arbeitszone | 23 | 71 % |
| Wald | 21 | 0 % |
| Zone für öffentliche Bauten und Anlagen | 14 | 150 % |
| Other zones (6) | 31 | - |
Volume utilization (ratioV)
Of the 1’810 parcels with a value, half lie between 7 % and 115 %. The median is 73 % and the mean 74 %.
Share of parcels by range
- below 50 %41 %
- 50 % to below 100 %26 %
- 100 % to below 150 %23 %
- 150 % and above11 %
Floor-area ratio (GFZ)
Of the 1’810 parcels with a value, half lie between 0.06 and 0.52. The median is 0.31 and the mean 0.33.
Share of parcels by range
- below 0.5073 %
- 0.50 to below 1.0022 %
- 1.00 to below 1.504 %
- 1.50 and above1 %
Building height
Of the 1’119 parcels with a value, half lie between 7.6 m and 11.0 m. The median is 9.1 m and the mean 9.4 m.
Share of parcels by range
- below 8 m31 %
- 8 m to below 12 m54 %
- 12 m to below 20 m16 %
- 20 m and above< 1 %
Number of floors
Of the 957 parcels with a value, half lie between 1.7 and 2.8. The median is 2.2 and the mean 2.3.
Share of parcels by range
- below 211 %
- 2 to below 358 %
- 3 to below 531 %
- 5 and above1 %
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 | 1’828 | 77 % |
| Last 60 years | 776 | 118 % |
| Last 40 years | 541 | 119 % |
| Last 20 years | 160 | 111 % |
| Last 15 years | 102 | 112 % |
| Last 10 years | 54 | 123 % |
| Last 5 years | 24 | 123 % |
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).