Buttwil: observed built density
Municipality in the canton of Aargau · FSO no. 4230 · Parcel data as of July 2025
- Parcels
- 731
< 1 % of the canton
- Municipal zones
- 12
- Median utilization
- 64 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.27
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 Buttwil
Buttwil is a municipality in the canton of Aargau. The parcel data lists 731 parcels in 12 municipal zone types. The zone types with the most parcels are Wohnzone 2 Geschosse W2 (289), Landwirtschaftszone (193) and Dorfzone (101).
The median parcel is built to a volume utilization of 64 %; half of the parcels lie between 6 % and 105 %. The canton median is 35 %, so Buttwil sits above it.
The median building height is 9.1 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.27. Parcels built in the last 20 years reach a mean volume utilization of 118 % (79 parcels), higher than the 67 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone 2 Geschosse W2 | 289 | 99 % |
| Landwirtschaftszone | 193 | 0 % |
| Dorfzone | 101 | 77 % |
| Wald | 71 | 0 % |
| Wohn- und Gewerbezone 2 Geschosse WG2 | 52 | 81 % |
| Uferschutzzone | 9 | 0 % |
| Kantonsstrasse | 5 | 0 % |
| Flugzone | 3 | 0 % |
| Gewerbezone | 3 | 93 % |
| Magere Böschung | 2 | 50 % |
| Zone für öffentliche Bauten | 2 | 66 % |
| Zone für Betriebsanlagen | 1 | 100 % |
Volume utilization (ratioV)
Of the 718 parcels with a value, half lie between 6 % and 105 %. The median is 64 % and the mean 64 %.
Share of parcels by range
- below 50 %46 %
- 50 % to below 100 %26 %
- 100 % to below 150 %21 %
- 150 % and above7 %
Floor-area ratio (GFZ)
Of the 718 parcels with a value, half lie between 0.05 and 0.50. The median is 0.27 and the mean 0.28.
Share of parcels by range
- below 0.5075 %
- 0.50 to below 1.0024 %
- 1.00 to below 1.501 %
- 1.50 and above< 1 %
Building height
Of the 386 parcels with a value, half lie between 7.7 m and 10.7 m. The median is 9.1 m and the mean 9.2 m.
Share of parcels by range
- below 8 m29 %
- 8 m to below 12 m64 %
- 12 m to below 20 m7 %
- 20 m and above0 %
Number of floors
Of the 320 parcels with a value, half lie between 1.7 and 2.5. The median is 2.1 and the mean 2.2.
Share of parcels by range
- below 211 %
- 2 to below 363 %
- 3 to below 526 %
- 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 | 731 | 67 % |
| Last 60 years | 393 | 114 % |
| Last 40 years | 268 | 124 % |
| Last 20 years | 79 | 118 % |
| Last 15 years | 45 | 104 % |
| Last 10 years | 27 | 106 % |
| Last 5 years | 13 | 121 % |
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).