Boswil: observed built density
Municipality in the canton of Aargau · FSO no. 4228 · Parcel data as of July 2025
- Parcels
- 1’538
< 1 % of the canton
- Municipal zones
- 29
- Median utilization
- 18 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.10
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 Boswil
Boswil is a municipality in the canton of Aargau. The parcel data lists 1’538 parcels in 29 municipal zone types. The zone types with the most parcels are Landwirtschaftszone (474), Wohnzone 1 (288) and Dorfzone (188).
The median parcel is built to a volume utilization of 18 %; half of the parcels lie between 5 % and 93 %. The canton median is 35 %, so Boswil sits below it.
The median building height is 9.2 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.10. Parcels built in the last 20 years reach a mean volume utilization of 114 % (199 parcels), higher than the 66 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landwirtschaftszone | 474 | 0 % |
| Wohnzone 1 | 288 | 80 % |
| Dorfzone | 188 | 87 % |
| Wohn- und Arbeitszone 3 | 142 | 49 % |
| Wohnzone 2 | 121 | 86 % |
| Wald | 69 | 0 % |
| Zentrumszone | 55 | 80 % |
| Extensive Wiesen trockener Ausprägung | 30 | 0 % |
| Arbeitszone 1 | 25 | 61 % |
| Wohnzone 3 | 25 | 117 % |
| Wohn- und Arbeitszone 2 | 23 | 81 % |
| Zone für öffentliche Bauten und Anlagen | 20 | 8 % |
| Other zones (17) | 78 | - |
Volume utilization (ratioV)
Of the 1’515 parcels with a value, half lie between 5 % and 93 %. The median is 18 % and the mean 57 %.
Share of parcels by range
- below 50 %55 %
- 50 % to below 100 %23 %
- 100 % to below 150 %14 %
- 150 % and above8 %
Floor-area ratio (GFZ)
Of the 1’515 parcels with a value, half lie between 0.05 and 0.50. The median is 0.10 and the mean 0.29.
Share of parcels by range
- below 0.5075 %
- 0.50 to below 1.0019 %
- 1.00 to below 1.505 %
- 1.50 and above1 %
Building height
Of the 759 parcels with a value, half lie between 7.5 m and 11.3 m. The median is 9.2 m and the mean 9.5 m.
Share of parcels by range
- below 8 m32 %
- 8 m to below 12 m51 %
- 12 m to below 20 m17 %
- 20 m and above< 1 %
Number of floors
Of the 536 parcels with a value, half lie between 1.8 and 2.6. The median is 2.1 and the mean 2.3.
Share of parcels by range
- below 28 %
- 2 to below 365 %
- 3 to below 526 %
- 5 and above1 %
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 | 1’538 | 66 % |
| Last 60 years | 607 | 122 % |
| Last 40 years | 443 | 112 % |
| Last 20 years | 199 | 114 % |
| Last 15 years | 148 | 114 % |
| Last 10 years | 68 | 124 % |
| Last 5 years | 12 | 114 % |
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).