Boniswil: observed built density
Municipality in the canton of Aargau · FSO no. 4192 · Parcel data as of July 2025
- Parcels
- 1’109
< 1 % of the canton
- Municipal zones
- 18
- Median utilization
- 9 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.09
Canton: 0.13
Switzerland: 0.09
- Median height
- 8.6 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 2.2
Switzerland: 2.3
About Boniswil
Boniswil is a municipality in the canton of Aargau. The parcel data lists 1’109 parcels in 18 municipal zone types. The zone types with the most parcels are Landwirtschaftszone (363), Wohnzone 2 (277) and Dorfzone (76).
The median parcel is built to a volume utilization of 9 %; half of the parcels lie between 5 % and 80 %. The canton median is 35 %, so Boniswil sits below it.
The median building height is 8.6 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 108 % (112 parcels), higher than the 43 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landwirtschaftszone | 363 | 0 % |
| Wohnzone 2 | 277 | 79 % |
| Dorfzone | 76 | 71 % |
| Wohnzone 1 | 70 | 81 % |
| Wohn- und Gewerbezone 2 | 65 | 47 % |
| Wald | 57 | 0 % |
| Wohn- und Gewerbezone 3 | 53 | 73 % |
| Wohnzone 3 | 43 | 81 % |
| HSD: Reservatszone | 36 | 0 % |
| Kernzone | 29 | 67 % |
| Grünzone | 8 | 0 % |
| HSD: Schutzzone im Wald | 7 | 0 % |
| Other zones (6) | 25 | - |
Volume utilization (ratioV)
Of the 1’091 parcels with a value, half lie between 5 % and 80 %. The median is 9 % and the mean 41 %.
Share of parcels by range
- below 50 %60 %
- 50 % to below 100 %25 %
- 100 % to below 150 %12 %
- 150 % and above3 %
Floor-area ratio (GFZ)
Of the 1’091 parcels with a value, half lie between 0.05 and 0.41. The median is 0.09 and the mean 0.23.
Share of parcels by range
- below 0.5082 %
- 0.50 to below 1.0015 %
- 1.00 to below 1.502 %
- 1.50 and above< 1 %
Building height
Of the 478 parcels with a value, half lie between 7.1 m and 10.4 m. The median is 8.6 m and the mean 8.9 m.
Share of parcels by range
- below 8 m42 %
- 8 m to below 12 m47 %
- 12 m to below 20 m11 %
- 20 m and above0 %
Number of floors
Of the 401 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 214 %
- 2 to below 362 %
- 3 to below 523 %
- 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 | 1’109 | 43 % |
| Last 60 years | 393 | 89 % |
| Last 40 years | 282 | 94 % |
| Last 20 years | 112 | 108 % |
| Last 15 years | 79 | 117 % |
| Last 10 years | 52 | 120 % |
| Last 5 years | 28 | 142 % |
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).