Mühlau: observed built density
Municipality in the canton of Aargau · FSO no. 4235 · Parcel data as of July 2025
- Parcels
- 651
< 1 % of the canton
- Municipal zones
- 15
- Median utilization
- 10 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.09
Canton: 0.13
Switzerland: 0.09
- Median height
- 10.1 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.3
Canton: 2.2
Switzerland: 2.3
About Mühlau
Mühlau is a municipality in the canton of Aargau. The parcel data lists 651 parcels in 15 municipal zone types. The zone types with the most parcels are Landwirtschaftszone (290), Wohnzone B (98) and Wohnzone A (74).
The median parcel is built to a volume utilization of 10 %; half of the parcels lie between 5 % and 97 %. The canton median is 35 %, so Mühlau sits below it.
The median building height is 10.1 m at 2.3 floors, and the median floor-area ratio (GFZ) is 0.09. Parcels built in the last 20 years reach a mean volume utilization of 111 % (77 parcels), higher than the 60 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landwirtschaftszone | 290 | 0 % |
| Wohnzone B | 98 | 93 % |
| Wohnzone A | 74 | 82 % |
| Kernzone | 54 | 84 % |
| Wald | 50 | 0 % |
| Wohn- und Gewerbezone | 24 | 50 % |
| Wohnzone C | 24 | 86 % |
| Kantonsstrasse | 13 | 0 % |
| Gewerbezone mit beschränktem Wohnanteil | 10 | 89 % |
| Gewässer | 5 | 0 % |
| Zone für öffentliche Bauten und Anlagen | 4 | 161 % |
| Bahnareal | 2 | 50 % |
| Other zones (3) | 3 | - |
Volume utilization (ratioV)
Of the 637 parcels with a value, half lie between 5 % and 97 %. The median is 10 % and the mean 56 %.
Share of parcels by range
- below 50 %58 %
- 50 % to below 100 %19 %
- 100 % to below 150 %15 %
- 150 % and above9 %
Floor-area ratio (GFZ)
Of the 637 parcels with a value, half lie between 0.04 and 0.46. The median is 0.09 and the mean 0.25.
Share of parcels by range
- below 0.5078 %
- 0.50 to below 1.0018 %
- 1.00 to below 1.503 %
- 1.50 and above1 %
Building height
Of the 295 parcels with a value, half lie between 8.7 m and 11.6 m. The median is 10.1 m and the mean 10.2 m.
Share of parcels by range
- below 8 m13 %
- 8 m to below 12 m68 %
- 12 m to below 20 m19 %
- 20 m and above0 %
Number of floors
Of the 234 parcels with a value, half lie between 1.9 and 3.0. The median is 2.3 and the mean 2.4.
Share of parcels by range
- below 25 %
- 2 to below 356 %
- 3 to below 538 %
- 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 | 651 | 60 % |
| Last 60 years | 265 | 111 % |
| Last 40 years | 209 | 113 % |
| Last 20 years | 77 | 111 % |
| Last 15 years | 52 | 123 % |
| Last 10 years | 29 | 126 % |
| Last 5 years | 10 | 167 % |
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).