Gossau (SG): observed built density
Municipality in the canton of St. Gallen · FSO no. 3443 · Parcel data as of July 2025
- Parcels
- 4’448
2 % of the canton
- Municipal zones
- 26
- Median utilization
- 58 %
Canton: 58 %
Switzerland: 10 %
- Median GFZ
- 0.34
Canton: 0.28
Switzerland: 0.09
- Median height
- 10.3 m
Canton: 9.6 m
Switzerland: 9.5 m
- Median floors
- 2.7
Canton: 2.4
Switzerland: 2.3
About Gossau (SG)
Gossau (SG) is a municipality in the canton of St. Gallen. The parcel data lists 4’448 parcels in 26 municipal zone types. The zone types with the most parcels are BauG Wohnzone WE (894), BauG Landwirtschaftszone (701) and BauG Wohn-Gewerbezone WG3 (586).
The median parcel is built to a volume utilization of 58 %; half of the parcels lie between 7 % and 99 %. The canton median is 58 %, close to the level of Gossau (SG).
The median building height is 10.3 m at 2.7 floors, and the median floor-area ratio (GFZ) is 0.34. Parcels built in the last 20 years reach a mean volume utilization of 139 % (408 parcels), higher than the 82 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| BauG Wohnzone WE | 894 | 79 % |
| BauG Landwirtschaftszone | 701 | 0 % |
| BauG Wohn-Gewerbezone WG3 | 586 | 79 % |
| BauG Wohnzone W2 | 448 | 94 % |
| Hinweis.Wald | 356 | 0 % |
| Hinweis.Verkehrsflaeche iB | 310 | 0 % |
| Hinweis.Verkehrsflaeche aB | 173 | 0 % |
| BauG Kernzone K3 | 150 | 84 % |
| BauG Wohnzone W3 | 140 | 60 % |
| BauG Gewerbe-Industriezone GI A | 122 | 75 % |
| BauG übriges Gemeindegebiet allg | 94 | 94 % |
| BauG Dorfkernzone DK2 | 91 | 70 % |
| Other zones (14) | 383 | - |
Volume utilization (ratioV)
Of the 4’409 parcels with a value, half lie between 7 % and 99 %. The median is 58 % and the mean 76 %.
Share of parcels by range
- below 50 %46 %
- 50 % to below 100 %30 %
- 100 % to below 150 %14 %
- 150 % and above11 %
Floor-area ratio (GFZ)
Of the 4’408 parcels with a value, half lie between 0.06 and 0.70. The median is 0.34 and the mean 0.44.
Share of parcels by range
- below 0.5063 %
- 0.50 to below 1.0025 %
- 1.00 to below 1.508 %
- 1.50 and above4 %
Building height
Of the 2’717 parcels with a value, half lie between 8.6 m and 12.7 m. The median is 10.3 m and the mean 10.8 m.
Share of parcels by range
- below 8 m17 %
- 8 m to below 12 m53 %
- 12 m to below 20 m29 %
- 20 m and above1 %
Number of floors
Of the 2’065 parcels with a value, half lie between 2.0 and 3.3. The median is 2.7 and the mean 2.8.
Share of parcels by range
- below 23 %
- 2 to below 341 %
- 3 to below 551 %
- 5 and above4 %
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 | 4’448 | 82 % |
| Last 60 years | 1’880 | 114 % |
| Last 40 years | 1’130 | 123 % |
| Last 20 years | 408 | 139 % |
| Last 15 years | 277 | 142 % |
| Last 10 years | 162 | 142 % |
| Last 5 years | 73 | 132 % |
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).