Romanshorn: observed built density
Municipality in the canton of Thurgau · FSO no. 4436 · Parcel data as of July 2025
- Parcels
- 2’935
2 % of the canton
- Municipal zones
- 28
- Median utilization
- 72 %
Canton: 24 %
Switzerland: 10 %
- Median GFZ
- 0.39
Canton: 0.10
Switzerland: 0.09
- Median height
- 9.8 m
Canton: 9.7 m
Switzerland: 9.5 m
- Median floors
- 2.4
Canton: 2.3
Switzerland: 2.3
About Romanshorn
Romanshorn is a municipality in the canton of Thurgau. The parcel data lists 2’935 parcels in 28 municipal zone types. The zone types with the most parcels are Wohnzone zweigeschossiger Erscheinung (1’057), Wohnzone dreigeschossiger Erscheinung (298) and Wohn- und Arbeitszone dreigeschossiger Erscheinung (287).
The median parcel is built to a volume utilization of 72 %; half of the parcels lie between 8 % and 113 %. The canton median is 24 %, so Romanshorn sits above it.
The median building height is 9.8 m at 2.4 floors, and the median floor-area ratio (GFZ) is 0.39. Parcels built in the last 20 years reach a mean volume utilization of 114 % (376 parcels), higher than the 84 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone zweigeschossiger Erscheinung | 1’057 | 93 % |
| Wohnzone dreigeschossiger Erscheinung | 298 | 92 % |
| Wohn- und Arbeitszone dreigeschossiger Erscheinung | 287 | 83 % |
| Strassenverkehrsfläche im Baugebiet | 266 | 0 % |
| Wohn- und Arbeitszone zweigeschossiger Erscheinung | 173 | 100 % |
| Landwirtschaftszone | 157 | 0 % |
| Kernzone | 131 | 76 % |
| Landschaftsschutzzone | 123 | 0 % |
| Wald | 85 | 0 % |
| Arbeitszone Industrie | 78 | 51 % |
| Zone für öffentliche Bauten und Anlagen | 50 | 66 % |
| Wohn- und Arbeitszone viergeschossiger Erscheinung | 41 | 55 % |
| Other zones (16) | 189 | - |
Volume utilization (ratioV)
Of the 2’900 parcels with a value, half lie between 8 % and 113 %. The median is 72 % and the mean 78 %.
Share of parcels by range
- below 50 %38 %
- 50 % to below 100 %29 %
- 100 % to below 150 %20 %
- 150 % and above12 %
Floor-area ratio (GFZ)
Of the 2’900 parcels with a value, half lie between 0.08 and 0.69. The median is 0.39 and the mean 0.48.
Share of parcels by range
- below 0.5062 %
- 0.50 to below 1.0026 %
- 1.00 to below 1.508 %
- 1.50 and above4 %
Building height
Of the 2’020 parcels with a value, half lie between 8.1 m and 11.9 m. The median is 9.8 m and the mean 10.2 m.
Share of parcels by range
- below 8 m24 %
- 8 m to below 12 m52 %
- 12 m to below 20 m23 %
- 20 m and above1 %
Number of floors
Of the 1’583 parcels with a value, half lie between 1.8 and 3.2. The median is 2.4 and the mean 2.5.
Share of parcels by range
- below 211 %
- 2 to below 345 %
- 3 to below 541 %
- 5 and above3 %
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 | 2’935 | 84 % |
| Last 60 years | 1’185 | 113 % |
| Last 40 years | 819 | 107 % |
| Last 20 years | 376 | 114 % |
| Last 15 years | 250 | 118 % |
| Last 10 years | 119 | 118 % |
| Last 5 years | 71 | 124 % |
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).