Kallern: observed built density
Municipality in the canton of Aargau · FSO no. 4233 · Parcel data as of July 2025
- Parcels
- 478
< 1 % of the canton
- Municipal zones
- 12
- Median utilization
- 7 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.07
Canton: 0.13
Switzerland: 0.09
- Median height
- 10.2 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 2.2
Switzerland: 2.3
About Kallern
Kallern is a municipality in the canton of Aargau. The parcel data lists 478 parcels in 12 municipal zone types. The zone types with the most parcels are Landwirtschaftszone (267), Wohnzone 2 (91) and Wald (90).
The median parcel is built to a volume utilization of 7 %; half of the parcels lie between 4 % and 49 %. The canton median is 35 %, so Kallern sits below it.
The median building height is 10.2 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.07. Parcels built in the last 20 years reach a mean volume utilization of 143 % (57 parcels), higher than the 38 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landwirtschaftszone | 267 | 0 % |
| Wohnzone 2 | 91 | 79 % |
| Wald | 90 | 0 % |
| Wohn- und Gewerbezone 2 | 11 | 143 % |
| Deponiezone | 7 | 0 % |
| Kantonsstrasse ausserhalb BZ | 4 | 0 % |
| Extensive Wiesen | 2 | 0 % |
| Spezialzone Hinterbühl | 2 | 50 % |
| Feuchtstandort / feuchte Böschung | 1 | 0 % |
| Kantonsstrasse innerhalb BZ | 1 | 0 % |
| Magere Böschung Nr. 18 & Parzelle 678 | 1 | 0 % |
| Zone für öffentliche Bauten und Anlagen | 1 | 100 % |
Volume utilization (ratioV)
Of the 471 parcels with a value, half lie between 4 % and 49 %. The median is 7 % and the mean 32 %.
Share of parcels by range
- below 50 %75 %
- 50 % to below 100 %12 %
- 100 % to below 150 %8 %
- 150 % and above5 %
Floor-area ratio (GFZ)
Of the 471 parcels with a value, half lie between 0.03 and 0.16. The median is 0.07 and the mean 0.13.
Share of parcels by range
- below 0.5088 %
- 0.50 to below 1.0011 %
- 1.00 to below 1.50< 1 %
- 1.50 and above0 %
Building height
Of the 136 parcels with a value, half lie between 8.4 m and 11.5 m. The median is 10.2 m and the mean 9.9 m.
Share of parcels by range
- below 8 m20 %
- 8 m to below 12 m65 %
- 12 m to below 20 m15 %
- 20 m and above0 %
Number of floors
Of the 94 parcels with a value, half lie between 1.8 and 2.5. The median is 2.1 and the mean 2.2.
Share of parcels by range
- below 25 %
- 2 to below 372 %
- 3 to below 522 %
- 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 | 478 | 38 % |
| Last 60 years | 132 | 114 % |
| Last 40 years | 104 | 122 % |
| Last 20 years | 57 | 143 % |
| Last 15 years | 36 | 156 % |
| Last 10 years | 25 | 130 % |
| Last 5 years | 3 | 189 % |
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).