Rorschacherberg: observed built density
Municipality in the canton of St. Gallen · FSO no. 3216 · Parcel data as of July 2025
- Parcels
- 1’753
1 % of the canton
- Municipal zones
- 22
- Median utilization
- 64 %
Canton: 58 %
Switzerland: 10 %
- Median GFZ
- 0.37
Canton: 0.28
Switzerland: 0.09
- Median height
- 10.5 m
Canton: 9.6 m
Switzerland: 9.5 m
- Median floors
- 2.4
Canton: 2.4
Switzerland: 2.3
About Rorschacherberg
Rorschacherberg is a municipality in the canton of St. Gallen. The parcel data lists 1’753 parcels in 22 municipal zone types. The zone types with the most parcels are BauG Wohnzone W2a (444), BauG Wohnzone W2b (361) and BauG Landwirtschaftszone (236).
The median parcel is built to a volume utilization of 64 %; half of the parcels lie between 9 % and 100 %. The canton median is 58 %, close to the level of Rorschacherberg.
The median building height is 10.5 m at 2.4 floors, and the median floor-area ratio (GFZ) is 0.37. Parcels built in the last 20 years reach a mean volume utilization of 116 % (247 parcels), higher than the 69 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| BauG Wohnzone W2a | 444 | 74 % |
| BauG Wohnzone W2b | 361 | 71 % |
| BauG Landwirtschaftszone | 236 | 0 % |
| BauG Wohnzone W3 | 156 | 86 % |
| BauG Wohn-Gewerbezone WG2 | 148 | 76 % |
| BauG Wohn-Gewerbezone WG3 | 93 | 87 % |
| Hinweis.Verkehrsflaeche iB | 91 | 0 % |
| Hinweis.Wald | 75 | 0 % |
| BauG Wohnzone W4 | 51 | 93 % |
| BauG übriges Gemeindegebiet allg | 29 | 7 % |
| BauG Zone für öffentliche Bauten und Anlagen | 21 | 94 % |
| BauG Industriezone IA | 9 | 20 % |
| Other zones (10) | 39 | - |
Volume utilization (ratioV)
Of the 1’729 parcels with a value, half lie between 9 % and 100 %. The median is 64 % and the mean 65 %.
Share of parcels by range
- below 50 %40 %
- 50 % to below 100 %35 %
- 100 % to below 150 %18 %
- 150 % and above7 %
Floor-area ratio (GFZ)
Of the 1’729 parcels with a value, half lie between 0.08 and 0.61. The median is 0.37 and the mean 0.40.
Share of parcels by range
- below 0.5066 %
- 0.50 to below 1.0028 %
- 1.00 to below 1.506 %
- 1.50 and above1 %
Building height
Of the 1’226 parcels with a value, half lie between 8.7 m and 12.4 m. The median is 10.5 m and the mean 10.8 m.
Share of parcels by range
- below 8 m15 %
- 8 m to below 12 m57 %
- 12 m to below 20 m27 %
- 20 m and above1 %
Number of floors
Of the 1’004 parcels with a value, half lie between 1.9 and 3.2. The median is 2.4 and the mean 2.6.
Share of parcels by range
- below 26 %
- 2 to below 349 %
- 3 to below 541 %
- 5 and above5 %
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 | 1’753 | 69 % |
| Last 60 years | 925 | 96 % |
| Last 40 years | 597 | 105 % |
| Last 20 years | 247 | 116 % |
| Last 15 years | 169 | 128 % |
| Last 10 years | 102 | 108 % |
| Last 5 years | 55 | 106 % |
Open the map at Rorschacherberg
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).