Mammern: observed built density
Municipality in the canton of Thurgau · FSO no. 4826 · Parcel data as of July 2025
- Parcels
- 579
< 1 % of the canton
- Municipal zones
- 21
- Median utilization
- 9 %
Canton: 24 %
Switzerland: 10 %
- Median GFZ
- 0.08
Canton: 0.10
Switzerland: 0.09
- Median height
- 8.9 m
Canton: 9.7 m
Switzerland: 9.5 m
- Median floors
- 2.0
Canton: 2.3
Switzerland: 2.3
About Mammern
Mammern is a municipality in the canton of Thurgau. The parcel data lists 579 parcels in 21 municipal zone types. The zone types with the most parcels are Landwirtschaftszone I (93), Einfamilienhauszone (84) and Wald (54).
The median parcel is built to a volume utilization of 9 %; half of the parcels lie between 5 % and 79 %. The canton median is 24 %, so Mammern sits below it.
The median building height is 8.9 m at 2.0 floors, and the median floor-area ratio (GFZ) is 0.08. Parcels built in the last 20 years reach a mean volume utilization of 109 % (62 parcels), higher than the 58 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landwirtschaftszone I | 93 | 0 % |
| Einfamilienhauszone | 84 | 84 % |
| Wald | 54 | 0 % |
| Dorfzone | 51 | 77 % |
| Wohn- und Gewerbezone zweigeschossig | 42 | 64 % |
| Landschaftsschutzzone | 40 | 0 % |
| Landwirtschaftszone II | 38 | 0 % |
| Strassen und Wege innerhalb von Bauzonen | 36 | 0 % |
| Strassenflächen ausserhalb von Bauzonen | 35 | 0 % |
| Seeuferwohnzone | 31 | 67 % |
| Wohnzone dreigeschossig | 14 | 57 % |
| Wohnzone zweigeschossig | 14 | 57 % |
| Other zones (9) | 47 | - |
Volume utilization (ratioV)
Of the 558 parcels with a value, half lie between 5 % and 79 %. The median is 9 % and the mean 48 %.
Share of parcels by range
- below 50 %64 %
- 50 % to below 100 %18 %
- 100 % to below 150 %11 %
- 150 % and above7 %
Floor-area ratio (GFZ)
Of the 558 parcels with a value, half lie between 0.04 and 0.30. The median is 0.08 and the mean 0.19.
Share of parcels by range
- below 0.5087 %
- 0.50 to below 1.0010 %
- 1.00 to below 1.502 %
- 1.50 and above1 %
Building height
Of the 249 parcels with a value, half lie between 7.1 m and 10.7 m. The median is 8.9 m and the mean 9.0 m.
Share of parcels by range
- below 8 m37 %
- 8 m to below 12 m54 %
- 12 m to below 20 m9 %
- 20 m and above0 %
Number of floors
Of the 176 parcels with a value, half lie between 1.6 and 2.4. The median is 2.0 and the mean 2.0.
Share of parcels by range
- below 220 %
- 2 to below 360 %
- 3 to below 520 %
- 5 and above0 %
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 | 579 | 58 % |
| Last 60 years | 177 | 122 % |
| Last 40 years | 136 | 108 % |
| Last 20 years | 62 | 109 % |
| Last 15 years | 55 | 111 % |
| Last 10 years | 45 | 112 % |
| Last 5 years | 27 | 122 % |
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).