Safenwil: observed built density
Municipality in the canton of Aargau · FSO no. 4283 · Parcel data as of July 2025
- Parcels
- 1’606
1 % of the canton
- Municipal zones
- 16
- Median utilization
- 71 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.35
Canton: 0.13
Switzerland: 0.09
- Median height
- 8.9 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 2.2
Switzerland: 2.3
About Safenwil
Safenwil is a municipality in the canton of Aargau. The parcel data lists 1’606 parcels in 16 municipal zone types. The zone types with the most parcels are Wohnzone 2 Geschosse W2 (993), Landwirtschaftszone (198) and Wohn- und Gewerbezone 3 Geschosse WG3 (154).
The median parcel is built to a volume utilization of 71 %; half of the parcels lie between 8 % and 106 %. The canton median is 35 %, so Safenwil sits above it.
The median building height is 8.9 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.35. Parcels built in the last 20 years reach a mean volume utilization of 116 % (324 parcels), higher than the 73 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone 2 Geschosse W2 | 993 | 84 % |
| Landwirtschaftszone | 198 | 0 % |
| Wohn- und Gewerbezone 3 Geschosse WG3 | 154 | 74 % |
| Gewerbezone | 69 | 28 % |
| Wald | 44 | 0 % |
| Wohnzone 3 Geschosse W3 | 42 | 61 % |
| Kernzone | 34 | 100 % |
| Zone für öffentliche Bauten und Anlagen | 20 | 1 % |
| Kantonsstrasse | 17 | 0 % |
| Bahnfläche | 14 | 0 % |
| Autobahn | 10 | 0 % |
| Übriges Gebiet | 4 | 0 % |
| Other zones (4) | 7 | - |
Volume utilization (ratioV)
Of the 1’590 parcels with a value, half lie between 8 % and 106 %. The median is 71 % and the mean 71 %.
Share of parcels by range
- below 50 %37 %
- 50 % to below 100 %35 %
- 100 % to below 150 %19 %
- 150 % and above10 %
Floor-area ratio (GFZ)
Of the 1’590 parcels with a value, half lie between 0.08 and 0.54. The median is 0.35 and the mean 0.36.
Share of parcels by range
- below 0.5071 %
- 0.50 to below 1.0025 %
- 1.00 to below 1.503 %
- 1.50 and above1 %
Building height
Of the 1’082 parcels with a value, half lie between 7.4 m and 10.7 m. The median is 8.9 m and the mean 9.1 m.
Share of parcels by range
- below 8 m34 %
- 8 m to below 12 m56 %
- 12 m to below 20 m10 %
- 20 m and above0 %
Number of floors
Of the 866 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 213 %
- 2 to below 363 %
- 3 to below 523 %
- 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 | 1’606 | 73 % |
| Last 60 years | 853 | 104 % |
| Last 40 years | 658 | 109 % |
| Last 20 years | 324 | 116 % |
| Last 15 years | 252 | 118 % |
| Last 10 years | 168 | 125 % |
| Last 5 years | 70 | 115 % |
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).