Bülach: observed built density
Municipality in the canton of Zurich · FSO no. 53 · Parcel data as of July 2025
- Parcels
- 3’469
1 % of the canton
- Municipal zones
- 36
- Median utilization
- 49 %
Canton: 40 %
Switzerland: 10 %
- Median GFZ
- 0.36
Canton: 0.22
Switzerland: 0.09
- Median height
- 10.8 m
Canton: 10.5 m
Switzerland: 9.5 m
- Median floors
- 2.9
Canton: 2.8
Switzerland: 2.3
About Bülach
Bülach is a municipality in the canton of Zurich. The parcel data lists 3’469 parcels in 36 municipal zone types. The zone types with the most parcels are Wohnzone W 3.0 (648), Kantonale Landwirtschaftszone (620) and Wohnzone W 1.6 (596).
The median parcel is built to a volume utilization of 49 %; half of the parcels lie between 6 % and 87 %. The canton median is 40 %, so Bülach sits above it.
The median building height is 10.8 m at 2.9 floors, and the median floor-area ratio (GFZ) is 0.36. Parcels built in the last 20 years reach a mean volume utilization of 97 % (359 parcels), lower than the 198 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone W 3.0 | 648 | 71 % |
| Kantonale Landwirtschaftszone | 620 | 0 % |
| Wohnzone W 1.6 | 596 | 69 % |
| Wohnzone W 1.9 | 275 | 70 % |
| Wald | 215 | 0 % |
| Wohn- und Gewerbezone WG 3.0A | 166 | 62 % |
| Kernzone A | 145 | 155 % |
| Wohnzone W 2.2 | 89 | 82 % |
| Kernzone B | 66 | 70 % |
| Wohnzone W 1.3 | 66 | 60 % |
| Wohn- und Gewerbezone WG 2.2 | 57 | 55 % |
| Kernzone W | 54 | 56 % |
| Other zones (24) | 472 | - |
Volume utilization (ratioV)
Of the 3’423 parcels with a value, half lie between 6 % and 87 %. The median is 49 % and the mean 83 %.
Share of parcels by range
- below 50 %51 %
- 50 % to below 100 %32 %
- 100 % to below 150 %13 %
- 150 % and above5 %
Floor-area ratio (GFZ)
Of the 3’422 parcels with a value, half lie between 0.06 and 0.78. The median is 0.36 and the mean 0.51.
Share of parcels by range
- below 0.5059 %
- 0.50 to below 1.0026 %
- 1.00 to below 1.509 %
- 1.50 and above6 %
Building height
Of the 2’016 parcels with a value, half lie between 8.8 m and 13.1 m. The median is 10.8 m and the mean 11.1 m.
Share of parcels by range
- below 8 m13 %
- 8 m to below 12 m50 %
- 12 m to below 20 m35 %
- 20 m and above2 %
Number of floors
Of the 1’629 parcels with a value, half lie between 2.2 and 3.6. The median is 2.9 and the mean 3.0.
Share of parcels by range
- below 24 %
- 2 to below 331 %
- 3 to below 557 %
- 5 and above8 %
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 | 3’469 | 198 % |
| Last 60 years | 1’382 | 108 % |
| Last 40 years | 838 | 101 % |
| Last 20 years | 359 | 97 % |
| Last 15 years | 262 | 99 % |
| Last 10 years | 171 | 105 % |
| Last 5 years | 73 | 106 % |
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).