Brittnau: observed built density
Municipality in the canton of Aargau · FSO no. 4274 · Parcel data as of July 2025
- Parcels
- 2’168
1 % of the canton
- Municipal zones
- 22
- Median utilization
- 57 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.20
Canton: 0.13
Switzerland: 0.09
- Median height
- 9.1 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.2
Canton: 2.2
Switzerland: 2.3
About Brittnau
Brittnau is a municipality in the canton of Aargau. The parcel data lists 2’168 parcels in 22 municipal zone types. The zone types with the most parcels are Landwirtschaftszone (776), Wohnzone 2 Geschosse dicht (691) and Wohnzone 2 Geschosse aufgelockert (351).
The median parcel is built to a volume utilization of 57 %; half of the parcels lie between 6 % and 104 %. The canton median is 35 %, so Brittnau sits above it.
The median building height is 9.1 m at 2.2 floors, and the median floor-area ratio (GFZ) is 0.20. Parcels built in the last 20 years reach a mean volume utilization of 116 % (305 parcels), higher than the 70 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landwirtschaftszone | 776 | 0 % |
| Wohnzone 2 Geschosse dicht | 691 | 90 % |
| Wohnzone 2 Geschosse aufgelockert | 351 | 83 % |
| Kernzone mit Ortsbildschutz | 99 | 114 % |
| Wald | 55 | 0 % |
| Wohn- und Gewerbezone 3 Geschosse | 55 | 89 % |
| Gewerbezone | 27 | 36 % |
| Uferschutzzone | 24 | - |
| Wohnzone 3 Geschosse | 19 | 94 % |
| Gewässer | 14 | 0 % |
| Kantonsstrasse | 12 | 0 % |
| Autobahn | 11 | 0 % |
| Other zones (9) | 34 | - |
Volume utilization (ratioV)
Of the 2’146 parcels with a value, half lie between 6 % and 104 %. The median is 57 % and the mean 67 %.
Share of parcels by range
- below 50 %48 %
- 50 % to below 100 %25 %
- 100 % to below 150 %17 %
- 150 % and above10 %
Floor-area ratio (GFZ)
Of the 2’143 parcels with a value, half lie between 0.05 and 0.47. The median is 0.20 and the mean 0.27.
Share of parcels by range
- below 0.5079 %
- 0.50 to below 1.0019 %
- 1.00 to below 1.502 %
- 1.50 and above< 1 %
Building height
Of the 1’181 parcels with a value, half lie between 7.6 m and 10.7 m. The median is 9.1 m and the mean 9.2 m.
Share of parcels by range
- below 8 m30 %
- 8 m to below 12 m61 %
- 12 m to below 20 m9 %
- 20 m and above< 1 %
Number of floors
Of the 938 parcels with a value, half lie between 1.7 and 2.7. The median is 2.2 and the mean 2.2.
Share of parcels by range
- below 214 %
- 2 to below 356 %
- 3 to below 530 %
- 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 | 2’168 | 70 % |
| Last 60 years | 935 | 110 % |
| Last 40 years | 670 | 115 % |
| Last 20 years | 305 | 116 % |
| Last 15 years | 237 | 112 % |
| Last 10 years | 147 | 107 % |
| Last 5 years | 82 | 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).