Seon: observed built density
Municipality in the canton of Aargau · FSO no. 4209 · Parcel data as of July 2025
- Parcels
- 2’885
1 % of the canton
- Municipal zones
- 23
- Median utilization
- 32 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.12
Canton: 0.13
Switzerland: 0.09
- Median height
- 9.1 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 2.2
Switzerland: 2.3
About Seon
Seon is a municipality in the canton of Aargau. The parcel data lists 2’885 parcels in 23 municipal zone types. The zone types with the most parcels are Wohnzone 2 (1’091), Landwirtschaftszone (899) and Wohn- und Gewerbezone (269).
The median parcel is built to a volume utilization of 32 %; half of the parcels lie between 5 % and 96 %. The canton median is 35 %, close to the level of Seon.
The median building height is 9.1 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.12. Parcels built in the last 20 years reach a mean volume utilization of 120 % (348 parcels), higher than the 59 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone 2 | 1’091 | 85 % |
| Landwirtschaftszone | 899 | 0 % |
| Wohn- und Gewerbezone | 269 | 81 % |
| Kernzone | 159 | 65 % |
| Wald | 137 | 0 % |
| Arbeitszone II | 86 | 84 % |
| Wohnzone 3 | 74 | 76 % |
| Materialabbau- und Deponiezone Emmet | 30 | 0 % |
| Zone für öffentliche Bauten und Anlagen | 29 | 54 % |
| Zentrumszone | 22 | 3 % |
| Dorfzone Vorder- / Hinterberg | 21 | 108 % |
| Dorfzone Retterswil | 12 | 96 % |
| Other zones (11) | 56 | - |
Volume utilization (ratioV)
Of the 2’856 parcels with a value, half lie between 5 % and 96 %. The median is 32 % and the mean 56 %.
Share of parcels by range
- below 50 %53 %
- 50 % to below 100 %24 %
- 100 % to below 150 %14 %
- 150 % and above8 %
Floor-area ratio (GFZ)
Of the 2’856 parcels with a value, half lie between 0.05 and 0.49. The median is 0.12 and the mean 0.30.
Share of parcels by range
- below 0.5076 %
- 0.50 to below 1.0019 %
- 1.00 to below 1.504 %
- 1.50 and above2 %
Building height
Of the 1’384 parcels with a value, half lie between 7.6 m and 10.8 m. The median is 9.1 m and the mean 9.3 m.
Share of parcels by range
- below 8 m30 %
- 8 m to below 12 m58 %
- 12 m to below 20 m12 %
- 20 m and above< 1 %
Number of floors
Of the 1’123 parcels with a value, half lie between 1.7 and 2.7. The median is 2.1 and the mean 2.2.
Share of parcels by range
- below 211 %
- 2 to below 360 %
- 3 to below 529 %
- 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 | 2’885 | 59 % |
| Last 60 years | 1’069 | 110 % |
| Last 40 years | 754 | 117 % |
| Last 20 years | 348 | 120 % |
| Last 15 years | 258 | 121 % |
| Last 10 years | 179 | 124 % |
| Last 5 years | 114 | 133 % |
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).