Riedholz: observed built density
Municipality in the canton of Solothurn · FSO no. 2554 · Parcel data as of July 2025
- Parcels
- 1’222
1 % of the canton
- Municipal zones
- 21
- Median utilization
- 60 %
Canton: 29 %
Switzerland: 10 %
- Median GFZ
- 0.24
Canton: 0.10
Switzerland: 0.09
- Median height
- 8.6 m
Canton: 9.2 m
Switzerland: 9.5 m
- Median floors
- 2.0
Canton: 2.2
Switzerland: 2.3
About Riedholz
Riedholz is a municipality in the canton of Solothurn. The parcel data lists 1’222 parcels in 21 municipal zone types. The zone types with the most parcels are Wohnzone 2-geschossig (553), Landwirtschaftszone (303) and Wohnzone 3-geschossig (78).
The median parcel is built to a volume utilization of 60 %; half of the parcels lie between 6 % and 103 %. The canton median is 29 %, so Riedholz sits above it.
The median building height is 8.6 m at 2.0 floors, and the median floor-area ratio (GFZ) is 0.24. Parcels built in the last 20 years reach a mean volume utilization of 109 % (142 parcels), higher than the 75 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone 2-geschossig | 553 | 93 % |
| Landwirtschaftszone | 303 | 0 % |
| Wohnzone 3-geschossig | 78 | 62 % |
| Verkehrszone Strasse | 63 | 0 % |
| Verkehrsfläche Strasse | 45 | 0 % |
| Wald | 40 | 0 % |
| Wohnzone für Solarhäuser und Wohnateliers | 29 | 100 % |
| Kernzone Erhaltung | 28 | 148 % |
| Gewerbezone mit Wohnen | 16 | 80 % |
| Zentrumszone 4-geschossig | 16 | 46 % |
| Gewässer | 12 | 0 % |
| Freihaltezone | 10 | 0 % |
| Other zones (9) | 29 | - |
Volume utilization (ratioV)
Of the 1’200 parcels with a value, half lie between 6 % and 103 %. The median is 60 % and the mean 71 %.
Share of parcels by range
- below 50 %46 %
- 50 % to below 100 %27 %
- 100 % to below 150 %20 %
- 150 % and above8 %
Floor-area ratio (GFZ)
Of the 1’200 parcels with a value, half lie between 0.06 and 0.43. The median is 0.24 and the mean 0.27.
Share of parcels by range
- below 0.5084 %
- 0.50 to below 1.0014 %
- 1.00 to below 1.501 %
- 1.50 and above1 %
Building height
Of the 713 parcels with a value, half lie between 7.2 m and 10.0 m. The median is 8.6 m and the mean 8.8 m.
Share of parcels by range
- below 8 m39 %
- 8 m to below 12 m52 %
- 12 m to below 20 m9 %
- 20 m and above0 %
Number of floors
Of the 567 parcels with a value, half lie between 1.7 and 2.4. The median is 2.0 and the mean 2.1.
Share of parcels by range
- below 214 %
- 2 to below 366 %
- 3 to below 520 %
- 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 | 1’222 | 75 % |
| Last 60 years | 493 | 106 % |
| Last 40 years | 340 | 106 % |
| Last 20 years | 142 | 109 % |
| Last 15 years | 65 | 114 % |
| Last 10 years | 31 | 113 % |
| Last 5 years | 14 | 108 % |
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).