Wartau: observed built density
Municipality in the canton of St. Gallen · FSO no. 3276 · Parcel data as of July 2025
- Parcels
- 3’534
2 % of the canton
- Municipal zones
- 24
- Median utilization
- 18 %
Canton: 58 %
Switzerland: 10 %
- Median GFZ
- 0.09
Canton: 0.28
Switzerland: 0.09
- Median height
- 9.1 m
Canton: 9.6 m
Switzerland: 9.5 m
- Median floors
- 2.2
Canton: 2.4
Switzerland: 2.3
About Wartau
Wartau is a municipality in the canton of St. Gallen. The parcel data lists 3’534 parcels in 24 municipal zone types. The zone types with the most parcels are BauG Landwirtschaftszone (1’140), BauG Wohnzone W2 (752) and BauG Dorfkernzone DK3 (240).
The median parcel is built to a volume utilization of 18 %; half of the parcels lie between 5 % and 97 %. The canton median is 58 %, so Wartau sits below it.
The median building height is 9.1 m at 2.2 floors, and the median floor-area ratio (GFZ) is 0.09. Parcels built in the last 20 years reach a mean volume utilization of 142 % (318 parcels), higher than the 92 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| BauG Landwirtschaftszone | 1’140 | 0 % |
| BauG Wohnzone W2 | 752 | 85 % |
| BauG Dorfkernzone DK3 | 240 | 75 % |
| Hinweis.Wald | 230 | 0 % |
| BauG Dorfkernzone DK2 | 164 | 126 % |
| Hinweis.Verkehrsflaeche aB | 154 | 0 % |
| BauG Wohnzone W3 | 152 | 90 % |
| BauG Kernzone | 129 | 88 % |
| Hinweis.Verkehrsflaeche iB | 128 | 0 % |
| BauG Grünzone Naturschutz | 104 | 0 % |
| BauG übriges Gemeindegebiet allg | 92 | 2 % |
| BauG Wohn-Gewerbezone WG3 | 65 | 87 % |
| Other zones (12) | 184 | - |
Volume utilization (ratioV)
Of the 3’497 parcels with a value, half lie between 5 % and 97 %. The median is 18 % and the mean 73 %.
Share of parcels by range
- below 50 %56 %
- 50 % to below 100 %20 %
- 100 % to below 150 %13 %
- 150 % and above11 %
Floor-area ratio (GFZ)
Of the 3’496 parcels with a value, half lie between 0.05 and 0.47. The median is 0.09 and the mean 0.28.
Share of parcels by range
- below 0.5077 %
- 0.50 to below 1.0017 %
- 1.00 to below 1.504 %
- 1.50 and above2 %
Building height
Of the 1’840 parcels with a value, half lie between 7.6 m and 10.8 m. The median is 9.1 m and the mean 9.3 m.
Share of parcels by range
- below 8 m29 %
- 8 m to below 12 m60 %
- 12 m to below 20 m11 %
- 20 m and above< 1 %
Number of floors
Of the 1’252 parcels with a value, half lie between 1.8 and 2.8. The median is 2.2 and the mean 2.3.
Share of parcels by range
- below 27 %
- 2 to below 359 %
- 3 to below 533 %
- 5 and above< 1 %
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 | 3’534 | 92 % |
| Last 60 years | 1’216 | 139 % |
| Last 40 years | 780 | 123 % |
| Last 20 years | 318 | 142 % |
| Last 15 years | 245 | 154 % |
| Last 10 years | 128 | 121 % |
| Last 5 years | 55 | 126 % |
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).