Gunzgen: observed built density
Municipality in the canton of Solothurn · FSO no. 2578 · Parcel data as of July 2025
- Parcels
- 722
1 % of the canton
- Municipal zones
- 18
- Median utilization
- 74 %
Canton: 29 %
Switzerland: 10 %
- Median GFZ
- 0.31
Canton: 0.10
Switzerland: 0.09
- Median height
- 8.7 m
Canton: 9.2 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 2.2
Switzerland: 2.3
About Gunzgen
Gunzgen is a municipality in the canton of Solothurn. The parcel data lists 722 parcels in 18 municipal zone types. The zone types with the most parcels are Wohnzone 2-geschossig (341), Landwirtschaftszone (112) and Wohnzone 2-geschossig dicht (52).
The median parcel is built to a volume utilization of 74 %; half of the parcels lie between 7 % and 113 %. The canton median is 29 %, so Gunzgen sits above it.
The median building height is 8.7 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.31. Parcels built in the last 20 years reach a mean volume utilization of 109 % (88 parcels), higher than the 70 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone 2-geschossig | 341 | 99 % |
| Landwirtschaftszone | 112 | 0 % |
| Wohnzone 2-geschossig dicht | 52 | 105 % |
| Verkehrsfläche Strasse | 46 | 0 % |
| Verkehrszone Strasse | 45 | 0 % |
| Kernzone | 30 | 107 % |
| Wohnzone 3-geschossig | 28 | 124 % |
| Industriezone | 13 | 0 % |
| Zentrumszone | 13 | 78 % |
| Wald | 10 | 0 % |
| Zone für öffentliche Bauten und Anlagen | 10 | 33 % |
| Gewerbezone | 7 | 61 % |
| Other zones (6) | 15 | - |
Volume utilization (ratioV)
Of the 704 parcels with a value, half lie between 7 % and 113 %. The median is 74 % and the mean 68 %.
Share of parcels by range
- below 50 %41 %
- 50 % to below 100 %26 %
- 100 % to below 150 %23 %
- 150 % and above10 %
Floor-area ratio (GFZ)
Of the 704 parcels with a value, half lie between 0.07 and 0.50. The median is 0.31 and the mean 0.31.
Share of parcels by range
- below 0.5075 %
- 0.50 to below 1.0024 %
- 1.00 to below 1.501 %
- 1.50 and above< 1 %
Building height
Of the 438 parcels with a value, half lie between 7.2 m and 10.1 m. The median is 8.7 m and the mean 8.9 m.
Share of parcels by range
- below 8 m38 %
- 8 m to below 12 m55 %
- 12 m to below 20 m8 %
- 20 m and above< 1 %
Number of floors
Of the 352 parcels with a value, half lie between 1.6 and 2.5. The median is 2.1 and the mean 2.1.
Share of parcels by range
- below 217 %
- 2 to below 360 %
- 3 to below 523 %
- 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 | 722 | 70 % |
| Last 60 years | 372 | 105 % |
| Last 40 years | 281 | 113 % |
| Last 20 years | 88 | 109 % |
| Last 15 years | 58 | 112 % |
| Last 10 years | 30 | 115 % |
| Last 5 years | 14 | 94 % |
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).