Dornach: observed built density
Municipality in the canton of Solothurn · FSO no. 2473 · Parcel data as of July 2025
- Parcels
- 2’697
2 % of the canton
- Municipal zones
- 25
- Median utilization
- 59 %
Canton: 29 %
Switzerland: 10 %
- Median GFZ
- 0.34
Canton: 0.10
Switzerland: 0.09
- Median height
- 9.6 m
Canton: 9.2 m
Switzerland: 9.5 m
- Median floors
- 2.5
Canton: 2.2
Switzerland: 2.3
About Dornach
Dornach is a municipality in the canton of Solothurn. The parcel data lists 2’697 parcels in 25 municipal zone types. The zone types with the most parcels are 2-geschossige Wohnzone b (643), 2-geschossige Wohnzone a (612) and Landwirtschaftszone (295).
The median parcel is built to a volume utilization of 59 %; half of the parcels lie between 6 % and 99 %. The canton median is 29 %, so Dornach sits above it.
The median building height is 9.6 m at 2.5 floors, and the median floor-area ratio (GFZ) is 0.34. Parcels built in the last 20 years reach a mean volume utilization of 102 % (277 parcels), higher than the 61 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| 2-geschossige Wohnzone b | 643 | 80 % |
| 2-geschossige Wohnzone a | 612 | 81 % |
| Landwirtschaftszone | 295 | 0 % |
| Einfamilienhauszone | 197 | 85 % |
| Kernzone 1 | 191 | 108 % |
| Verkehrszone Strasse | 180 | 0 % |
| Wald | 153 | 0 % |
| 2-geschossige Wohnzone c | 106 | 60 % |
| 3-geschossige Wohnzone | 62 | 92 % |
| Kernzone 2 | 59 | 105 % |
| Freihaltezone | 46 | 0 % |
| Gewerbezone 2 | 34 | 20 % |
| Other zones (13) | 119 | - |
Volume utilization (ratioV)
Of the 2’664 parcels with a value, half lie between 6 % and 99 %. The median is 59 % and the mean 59 %.
Share of parcels by range
- below 50 %46 %
- 50 % to below 100 %30 %
- 100 % to below 150 %17 %
- 150 % and above7 %
Floor-area ratio (GFZ)
Of the 2’664 parcels with a value, half lie between 0.06 and 0.59. The median is 0.34 and the mean 0.38.
Share of parcels by range
- below 0.5066 %
- 0.50 to below 1.0027 %
- 1.00 to below 1.504 %
- 1.50 and above2 %
Building height
Of the 1’592 parcels with a value, half lie between 8.3 m and 11.4 m. The median is 9.6 m and the mean 9.9 m.
Share of parcels by range
- below 8 m19 %
- 8 m to below 12 m64 %
- 12 m to below 20 m16 %
- 20 m and above< 1 %
Number of floors
Of the 1’410 parcels with a value, half lie between 1.9 and 3.1. The median is 2.5 and the mean 2.5.
Share of parcels by range
- below 25 %
- 2 to below 346 %
- 3 to below 548 %
- 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 | 2’697 | 61 % |
| Last 60 years | 1’022 | 98 % |
| Last 40 years | 650 | 104 % |
| Last 20 years | 277 | 102 % |
| Last 15 years | 193 | 102 % |
| Last 10 years | 95 | 109 % |
| Last 5 years | 50 | 115 % |
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).