Olsberg: observed built density
Municipality in the canton of Aargau · FSO no. 4257 · Parcel data as of July 2025
- Parcels
- 308
< 1 % of the canton
- Municipal zones
- 12
- Median utilization
- 15 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.09
Canton: 0.13
Switzerland: 0.09
- Median height
- 9.2 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 2.2
Switzerland: 2.3
About Olsberg
Olsberg is a municipality in the canton of Aargau. The parcel data lists 308 parcels in 12 municipal zone types. The zone types with the most parcels are Neubautenzone A (104), Landwirtschaftszone (99) and Kernbautenzone (38).
The median parcel is built to a volume utilization of 15 %; half of the parcels lie between 5 % and 94 %. The canton median is 35 %, so Olsberg sits below it.
The median building height is 9.2 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.09. Parcels built in the last 20 years reach a mean volume utilization of 126 % (42 parcels), higher than the 58 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Neubautenzone A | 104 | 77 % |
| Landwirtschaftszone | 99 | 0 % |
| Kernbautenzone | 38 | 107 % |
| Neubautenzone B | 24 | 96 % |
| Wald | 20 | 0 % |
| Uferschutzzone Violenbach | 9 | 0 % |
| Kantonsstrasse | 5 | 0 % |
| Spezialzone B Stift Olsberg | 3 | 2 % |
| Zone für öffentliche Bauten und Anlagen | 3 | 16 % |
| Gewässer | 1 | 0 % |
| Naturschutzzone Wald / seltene Waldstandorte | 1 | 0 % |
| Spezialzone A Stift Olsberg | 1 | 100 % |
Volume utilization (ratioV)
Of the 297 parcels with a value, half lie between 5 % and 94 %. The median is 15 % and the mean 53 %.
Share of parcels by range
- below 50 %55 %
- 50 % to below 100 %24 %
- 100 % to below 150 %14 %
- 150 % and above8 %
Floor-area ratio (GFZ)
Of the 297 parcels with a value, half lie between 0.05 and 0.43. The median is 0.09 and the mean 0.23.
Share of parcels by range
- below 0.5081 %
- 0.50 to below 1.0017 %
- 1.00 to below 1.501 %
- 1.50 and above< 1 %
Building height
Of the 144 parcels with a value, half lie between 7.6 m and 10.9 m. The median is 9.2 m and the mean 9.3 m.
Share of parcels by range
- below 8 m30 %
- 8 m to below 12 m57 %
- 12 m to below 20 m13 %
- 20 m and above1 %
Number of floors
Of the 114 parcels with a value, half lie between 1.7 and 2.5. The median is 2.1 and the mean 2.1.
Share of parcels by range
- below 211 %
- 2 to below 366 %
- 3 to below 524 %
- 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 | 308 | 58 % |
| Last 60 years | 142 | 102 % |
| Last 40 years | 103 | 114 % |
| Last 20 years | 42 | 126 % |
| Last 15 years | 29 | 110 % |
| Last 10 years | 15 | 111 % |
| Last 5 years | 10 | 122 % |
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).