Zizers: observed built density
Municipality in the canton of Graubünden · FSO no. 3947 · Parcel data as of July 2025
- Parcels
- 1’609
1 % of the canton
- Municipal zones
- 17
- Median utilization
- 34 %
Canton: 8 %
Switzerland: 10 %
- Median GFZ
- 0.16
Canton: 0.08
Switzerland: 0.09
- Median height
- 9.1 m
Canton: 9.2 m
Switzerland: 9.5 m
- Median floors
- 2.5
Canton: 2.3
Switzerland: 2.3
About Zizers
Zizers is a municipality in the canton of Graubünden. The parcel data lists 1’609 parcels in 17 municipal zone types. The zone types with the most parcels are Landwirtschaftszone (529), Wohnzone I (495) and Wohnzone III (148).
The median parcel is built to a volume utilization of 34 %; half of the parcels lie between 5 % and 91 %. The canton median is 8 %, so Zizers sits above it.
The median building height is 9.1 m at 2.5 floors, and the median floor-area ratio (GFZ) is 0.16. Parcels built in the last 20 years reach a mean volume utilization of 119 % (186 parcels), higher than the 64 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Landwirtschaftszone | 529 | 0 % |
| Wohnzone I | 495 | 80 % |
| Wohnzone III | 148 | 75 % |
| Übriges Gemeindegebiet | 131 | 0 % |
| Kernzone 1 | 90 | 118 % |
| Kernzone 2 | 68 | 116 % |
| Industriezone | 42 | 70 % |
| Wohnzone II | 38 | 39 % |
| Wald | 28 | 0 % |
| Wohn- und Gewerbezone | 17 | 78 % |
| Zone für öffentliche Bauten und Anlagen ES II | 10 | 38 % |
| Gewerbezone | 4 | 58 % |
| Other zones (5) | 9 | - |
Volume utilization (ratioV)
Of the 1’588 parcels with a value, half lie between 5 % and 91 %. The median is 34 % and the mean 55 %.
Share of parcels by range
- below 50 %54 %
- 50 % to below 100 %26 %
- 100 % to below 150 %12 %
- 150 % and above8 %
Floor-area ratio (GFZ)
Of the 1’588 parcels with a value, half lie between 0.05 and 0.59. The median is 0.16 and the mean 0.41.
Share of parcels by range
- below 0.5067 %
- 0.50 to below 1.0021 %
- 1.00 to below 1.506 %
- 1.50 and above6 %
Building height
Of the 832 parcels with a value, half lie between 7.6 m and 10.9 m. The median is 9.1 m and the mean 9.4 m.
Share of parcels by range
- below 8 m29 %
- 8 m to below 12 m56 %
- 12 m to below 20 m15 %
- 20 m and above< 1 %
Number of floors
Of the 648 parcels with a value, half lie between 1.9 and 3.1. The median is 2.5 and the mean 2.6.
Share of parcels by range
- below 27 %
- 2 to below 343 %
- 3 to below 547 %
- 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 | 1’609 | 64 % |
| Last 60 years | 664 | 98 % |
| Last 40 years | 452 | 107 % |
| Last 20 years | 186 | 119 % |
| Last 15 years | 147 | 124 % |
| Last 10 years | 95 | 143 % |
| Last 5 years | 35 | 172 % |
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).