Seegräben: observed built density
Municipality in the canton of Zurich · FSO no. 119 · Parcel data as of July 2025
- Parcels
- 757
< 1 % of the canton
- Municipal zones
- 19
- Median utilization
- 9 %
Canton: 40 %
Switzerland: 10 %
- Median GFZ
- 0.09
Canton: 0.22
Switzerland: 0.09
- Median height
- 9.5 m
Canton: 10.5 m
Switzerland: 9.5 m
- Median floors
- 2.4
Canton: 2.8
Switzerland: 2.3
About Seegräben
Seegräben is a municipality in the canton of Zurich. The parcel data lists 757 parcels in 19 municipal zone types. The zone types with the most parcels are Kantonale Landwirtschaftszone (227), Wohnzone 1.8 (194) and Kernzone III (67).
The median parcel is built to a volume utilization of 9 %; half of the parcels lie between 5 % and 76 %. The canton median is 40 %, so Seegräben sits below it.
The median building height is 9.5 m at 2.4 floors, and the median floor-area ratio (GFZ) is 0.09. Parcels built in the last 20 years reach a mean volume utilization of 106 % (67 parcels), higher than the 62 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Kantonale Landwirtschaftszone | 227 | 0 % |
| Wohnzone 1.8 | 194 | 78 % |
| Kernzone III | 67 | 54 % |
| Wald | 66 | 0 % |
| Kantonale Freihaltezone | 53 | 0 % |
| Kernzone I | 45 | 81 % |
| Wohnzone 1.4 | 44 | 59 % |
| Kernzone II | 21 | 48 % |
| Industriezone G | 8 | 0 % |
| Reservezone | 6 | 0 % |
| Quartiererhaltungszone | 4 | 62 % |
| Wohnzone G 3.0 | 4 | 9 % |
| Other zones (7) | 18 | - |
Volume utilization (ratioV)
Of the 735 parcels with a value, half lie between 5 % and 76 %. The median is 9 % and the mean 48 %.
Share of parcels by range
- below 50 %63 %
- 50 % to below 100 %21 %
- 100 % to below 150 %11 %
- 150 % and above6 %
Floor-area ratio (GFZ)
Of the 735 parcels with a value, half lie between 0.04 and 0.43. The median is 0.09 and the mean 0.24.
Share of parcels by range
- below 0.5079 %
- 0.50 to below 1.0017 %
- 1.00 to below 1.503 %
- 1.50 and above1 %
Building height
Of the 327 parcels with a value, half lie between 7.6 m and 11.3 m. The median is 9.5 m and the mean 9.4 m.
Share of parcels by range
- below 8 m29 %
- 8 m to below 12 m55 %
- 12 m to below 20 m16 %
- 20 m and above0 %
Number of floors
Of the 239 parcels with a value, half lie between 1.8 and 3.1. The median is 2.4 and the mean 2.4.
Share of parcels by range
- below 212 %
- 2 to below 341 %
- 3 to below 547 %
- 5 and above1 %
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 | 757 | 62 % |
| Last 60 years | 251 | 124 % |
| Last 40 years | 146 | 157 % |
| Last 20 years | 67 | 106 % |
| Last 15 years | 42 | 108 % |
| Last 10 years | 25 | 109 % |
| Last 5 years | 15 | 104 % |
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).