Herznach-Ueken: observed built density
Municipality in the canton of Aargau · FSO no. 4186 · Parcel data as of July 2025
- Parcels
- 4’523
1 % of the canton
- Municipal zones
- 25
- Median utilization
- 9 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.08
Canton: 0.13
Switzerland: 0.09
- Median height
- 9.5 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- -
Canton: 2.2
Switzerland: 2.3
About Herznach-Ueken
Herznach-Ueken is a municipality in the canton of Aargau. The parcel data lists 4’523 parcels in 25 municipal zone types. The zone types with the most parcels are Landwirtschaftszone (1’446), Wald (586) and Dorfkernzone (540).
The median parcel is built to a volume utilization of 9 %; half of the parcels lie between 4 % and 75 %. The canton median is 35 %, so Herznach-Ueken sits below it.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landwirtschaftszone | 1’446 | 0 % |
| Wald | 586 | 0 % |
| Dorfkernzone | 540 | 64 % |
| Wohnzone 2 dicht | 433 | 80 % |
| Wohnzone 2b | 412 | 59 % |
| Wohnzone 2 aufgelockert | 361 | 81 % |
| Wohnzone 2a | 282 | 68 % |
| Wohn- und Gewerbezone 2 | 109 | 79 % |
| Gewässerschutzzone | 48 | 0 % |
| Rebbau-Zone | 46 | 0 % |
| Kantonsstrasse | 43 | 0 % |
| Zone für öffentliche Bauten und Anlagen | 42 | 10 % |
| Other zones (13) | 175 | - |
Volume utilization (ratioV)
Of the 4’502 parcels with a value, half lie between 4 % and 75 %. The median is 9 % and the mean 42 %.
Share of parcels by range
- below 50 %66 %
- 50 % to below 100 %17 %
- 100 % to below 150 %10 %
- 150 % and above7 %
Floor-area ratio (GFZ)
Of the 4’502 parcels with a value, half lie between 0.04 and 0.77. The median is 0.08 and the mean 0.46.
Share of parcels by range
- below 0.5066 %
- 0.50 to below 1.0017 %
- 1.00 to below 1.508 %
- 1.50 and above9 %
Building height
Of the 1’886 parcels with a value, half lie between 8.1 m and 11.1 m. The median is 9.5 m and the mean 9.5 m.
Share of parcels by range
- below 8 m24 %
- 8 m to below 12 m65 %
- 12 m to below 20 m11 %
- 20 m and above< 1 %
Number of floors
The parcel data has too few values for this measure here.
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 | 4’523 | 44 % |
Open the map at Herznach-Ueken
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).