Altendorf: observed built density
Municipality in the canton of Schwyz · FSO no. 1341 · Parcel data as of July 2025
- Parcels
- 1’828
4 % of the canton
- Municipal zones
- 27
- Median utilization
- 71 %
Canton: 62 %
Switzerland: 10 %
- Median GFZ
- 0.44
Canton: 0.37
Switzerland: 0.09
- Median height
- 10.5 m
Canton: 10.2 m
Switzerland: 9.5 m
- Median floors
- 2.6
Canton: 2.6
Switzerland: 2.3
About Altendorf
Altendorf is a municipality in the canton of Schwyz. The parcel data lists 1’828 parcels in 27 municipal zone types. The zone types with the most parcels are Wohnzone 2 Geschosse (697), Landwirtschaftszone (386) and Gewerbezone 2 (91).
The median parcel is built to a volume utilization of 71 %; half of the parcels lie between 10 % and 110 %. The canton median is 62 %, so Altendorf sits above it.
The median building height is 10.5 m at 2.6 floors, and the median floor-area ratio (GFZ) is 0.44. Parcels built in the last 20 years reach a mean volume utilization of 213 % (372 parcels), higher than the 185 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone 2 Geschosse | 697 | 81 % |
| Landwirtschaftszone | 386 | 51 % |
| Gewerbezone 2 | 91 | 45 % |
| Wald | 85 | 0 % |
| Wohnzone 3 Geschosse | 72 | 94 % |
| Wohn- und Gewerbezone 4 Geschosse | 60 | 67 % |
| Übriges Gemeindegebiet | 52 | 2 % |
| Wohn- und Gewerbezone 3 Geschosse | 50 | 94 % |
| Wohnzone 4 Geschosse | 47 | 80 % |
| Landhauszone 2 | 45 | 76 % |
| Verkehrsfläche innerhalb Bauzone | 41 | 0 % |
| Landhauszone 1 | 37 | 84 % |
| Other zones (15) | 165 | - |
Volume utilization (ratioV)
Of the 1’795 parcels with a value, half lie between 10 % and 110 %. The median is 71 % and the mean 167 %.
Share of parcels by range
- below 50 %37 %
- 50 % to below 100 %32 %
- 100 % to below 150 %18 %
- 150 % and above13 %
Floor-area ratio (GFZ)
Of the 1’795 parcels with a value, half lie between 0.07 and 0.77. The median is 0.44 and the mean 0.50.
Share of parcels by range
- below 0.5054 %
- 0.50 to below 1.0031 %
- 1.00 to below 1.5011 %
- 1.50 and above4 %
Building height
Of the 1’341 parcels with a value, half lie between 8.8 m and 12.2 m. The median is 10.5 m and the mean 10.7 m.
Share of parcels by range
- below 8 m14 %
- 8 m to below 12 m60 %
- 12 m to below 20 m26 %
- 20 m and above< 1 %
Number of floors
Of the 1’014 parcels with a value, half lie between 2.0 and 3.2. The median is 2.6 and the mean 2.7.
Share of parcels by range
- below 26 %
- 2 to below 341 %
- 3 to below 547 %
- 5 and above6 %
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 | 1’828 | 185 % |
| Last 60 years | 1’053 | 173 % |
| Last 40 years | 818 | 189 % |
| Last 20 years | 372 | 213 % |
| Last 15 years | 281 | 223 % |
| Last 10 years | 190 | 241 % |
| Last 5 years | 140 | 219 % |
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).