Flums: observed built density
Municipality in the canton of St. Gallen · FSO no. 3292 · Parcel data as of July 2025
- Parcels
- 3’680
2 % of the canton
- Municipal zones
- 29
- Median utilization
- 40 %
Canton: 58 %
Switzerland: 10 %
- Median GFZ
- 0.10
Canton: 0.28
Switzerland: 0.09
- Median height
- 9.3 m
Canton: 9.6 m
Switzerland: 9.5 m
- Median floors
- 2.3
Canton: 2.4
Switzerland: 2.3
About Flums
Flums is a municipality in the canton of St. Gallen. The parcel data lists 3’680 parcels in 29 municipal zone types. The zone types with the most parcels are BauG Landwirtschaftszone (1’299), BauG Wohnzone W2b (566) and BauG Wohnzone W2a (484).
The median parcel is built to a volume utilization of 40 %; half of the parcels lie between 6 % and 101 %. The canton median is 58 %, so Flums sits below it.
The median building height is 9.3 m at 2.3 floors, and the median floor-area ratio (GFZ) is 0.10. Parcels built in the last 20 years reach a mean volume utilization of 158 % (355 parcels), higher than the 85 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| BauG Landwirtschaftszone | 1’299 | 12 % |
| BauG Wohnzone W2b | 566 | 78 % |
| BauG Wohnzone W2a | 484 | 93 % |
| Hinweis.Wald | 314 | 0 % |
| BauG Wohnzone W2c | 131 | 87 % |
| BauG Wohn-Gewerbezone WG3 | 123 | 63 % |
| BauG übriges Gemeindegebiet allg | 121 | 21 % |
| BauG Kernzone K3a | 120 | 75 % |
| Hinweis.Verkehrsflaeche aB | 95 | 0 % |
| Hinweis.Verkehrsflaeche iB | 79 | 0 % |
| BauG Dorfkernzone DK3 | 52 | 65 % |
| BauG Wohnzone W3b | 46 | 66 % |
| Other zones (17) | 250 | - |
Volume utilization (ratioV)
Of the 3’637 parcels with a value, half lie between 6 % and 101 %. The median is 40 % and the mean 78 %.
Share of parcels by range
- below 50 %53 %
- 50 % to below 100 %21 %
- 100 % to below 150 %13 %
- 150 % and above12 %
Floor-area ratio (GFZ)
Of the 3’635 parcels with a value, half lie between 0.05 and 0.45. The median is 0.10 and the mean 0.27.
Share of parcels by range
- below 0.5079 %
- 0.50 to below 1.0016 %
- 1.00 to below 1.503 %
- 1.50 and above2 %
Building height
Of the 2’217 parcels with a value, half lie between 8.1 m and 11.0 m. The median is 9.3 m and the mean 9.6 m.
Share of parcels by range
- below 8 m24 %
- 8 m to below 12 m63 %
- 12 m to below 20 m12 %
- 20 m and above< 1 %
Number of floors
Of the 1’576 parcels with a value, half lie between 1.8 and 3.0. The median is 2.3 and the mean 2.4.
Share of parcels by range
- below 29 %
- 2 to below 352 %
- 3 to below 539 %
- 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 | 3’680 | 85 % |
| Last 60 years | 1’325 | 133 % |
| Last 40 years | 853 | 141 % |
| Last 20 years | 355 | 158 % |
| Last 15 years | 237 | 161 % |
| Last 10 years | 155 | 175 % |
| Last 5 years | 59 | 170 % |
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).