Birmensdorf (ZH): observed built density
Municipality in the canton of Zurich · FSO no. 242 · Parcel data as of July 2025
- Parcels
- 2’334
1 % of the canton
- Municipal zones
- 22
- Median utilization
- 10 %
Canton: 40 %
Switzerland: 10 %
- Median GFZ
- 0.09
Canton: 0.22
Switzerland: 0.09
- Median height
- 10.3 m
Canton: 10.5 m
Switzerland: 9.5 m
- Median floors
- 2.5
Canton: 2.8
Switzerland: 2.3
About Birmensdorf (ZH)
Birmensdorf (ZH) is a municipality in the canton of Zurich. The parcel data lists 2’334 parcels in 22 municipal zone types. The zone types with the most parcels are Kantonale Landwirtschaftszone (520), Wohnzone 2/45% (507) and Wald (341).
The median parcel is built to a volume utilization of 10 %; half of the parcels lie between 5 % and 78 %. The canton median is 40 %, so Birmensdorf (ZH) sits below it.
The median building height is 10.3 m at 2.5 floors, and the median floor-area ratio (GFZ) is 0.09. Parcels built in the last 20 years reach a mean volume utilization of 112 % (178 parcels), higher than the 69 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Kantonale Landwirtschaftszone | 520 | 0 % |
| Wohnzone 2/45% | 507 | 58 % |
| Wald | 341 | 0 % |
| Wohnzone 2/30% | 338 | 64 % |
| zweigeschossige Kernzone | 141 | 85 % |
| Wohnzone 1/20% | 88 | 74 % |
| Wohnzone 3/60% | 82 | 52 % |
| zweigeschossige Wohnzone mit Gewerbeerleichterung /45% | 77 | 63 % |
| dreigeschossige Wohnzone mit Gewerbeerleichterung /60% | 49 | 87 % |
| Dreigeschossige Zone für öffentliche Bauten | 31 | 0 % |
| Freihaltezone | 30 | 0 % |
| Gewässer | 22 | 0 % |
| Other zones (10) | 108 | - |
Volume utilization (ratioV)
Of the 2’309 parcels with a value, half lie between 5 % and 78 %. The median is 10 % and the mean 55 %.
Share of parcels by range
- below 50 %61 %
- 50 % to below 100 %24 %
- 100 % to below 150 %10 %
- 150 % and above5 %
Floor-area ratio (GFZ)
Of the 2’309 parcels with a value, half lie between 0.05 and 0.63. The median is 0.09 and the mean 0.33.
Share of parcels by range
- below 0.5068 %
- 0.50 to below 1.0023 %
- 1.00 to below 1.507 %
- 1.50 and above2 %
Building height
Of the 1’099 parcels with a value, half lie between 7.9 m and 12.0 m. The median is 10.3 m and the mean 10.0 m.
Share of parcels by range
- below 8 m26 %
- 8 m to below 12 m49 %
- 12 m to below 20 m24 %
- 20 m and above1 %
Number of floors
Of the 938 parcels with a value, half lie between 1.9 and 3.1. The median is 2.5 and the mean 2.5.
Share of parcels by range
- below 29 %
- 2 to below 341 %
- 3 to below 549 %
- 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 | 2’334 | 69 % |
| Last 60 years | 789 | 129 % |
| Last 40 years | 452 | 159 % |
| Last 20 years | 178 | 112 % |
| Last 15 years | 131 | 113 % |
| Last 10 years | 83 | 112 % |
| Last 5 years | 25 | 90 % |
Open the map at Birmensdorf (ZH)
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).