Langnau am Albis: observed built density
Municipality in the canton of Zurich · FSO no. 136 · Parcel data as of July 2025
- Parcels
- 2’233
1 % of the canton
- Municipal zones
- 23
- Median utilization
- 50 %
Canton: 40 %
Switzerland: 10 %
- Median GFZ
- 0.36
Canton: 0.22
Switzerland: 0.09
- Median height
- 9.7 m
Canton: 10.5 m
Switzerland: 9.5 m
- Median floors
- 2.3
Canton: 2.8
Switzerland: 2.3
About Langnau am Albis
Langnau am Albis is a municipality in the canton of Zurich. The parcel data lists 2’233 parcels in 23 municipal zone types. The zone types with the most parcels are Wohnzone mit Baumasse 1.5 m3/m2 (461), Wohnzone mit Baumasse 1.7 m3/m2 (388) and Wohnzone mit Baumasse 2.0 m3/m2 (318).
The median parcel is built to a volume utilization of 50 %; half of the parcels lie between 7 % and 84 %. The canton median is 40 %, so Langnau am Albis sits above it.
The median building height is 9.7 m at 2.3 floors, and the median floor-area ratio (GFZ) is 0.36. Parcels built in the last 20 years reach a mean volume utilization of 101 % (175 parcels), higher than the 67 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone mit Baumasse 1.5 m3/m2 | 461 | 59 % |
| Wohnzone mit Baumasse 1.7 m3/m2 | 388 | 67 % |
| Wohnzone mit Baumasse 2.0 m3/m2 | 318 | 76 % |
| Kantonale Landwirtschaftszone | 273 | 0 % |
| Wald | 175 | 0 % |
| Wohnzone mit Baumasse 2.5 m3/m2 | 145 | 57 % |
| Kernzone I | 108 | 35 % |
| Wohnzone mit Baumasse 3.0 m3/m2 | 77 | 28 % |
| Wohnzone mit Gewerbeerleichterung mit Baumasse 3.0 m3/m2 | 71 | 81 % |
| Kernzone II | 38 | 70 % |
| Freihaltezone | 36 | 0 % |
| Strassen (HLS) | 30 | 0 % |
| Other zones (11) | 113 | - |
Volume utilization (ratioV)
Of the 2’209 parcels with a value, half lie between 7 % and 84 %. The median is 50 % and the mean 60 %.
Share of parcels by range
- below 50 %50 %
- 50 % to below 100 %32 %
- 100 % to below 150 %14 %
- 150 % and above4 %
Floor-area ratio (GFZ)
Of the 2’209 parcels with a value, half lie between 0.06 and 0.62. The median is 0.36 and the mean 0.40.
Share of parcels by range
- below 0.5064 %
- 0.50 to below 1.0028 %
- 1.00 to below 1.506 %
- 1.50 and above2 %
Building height
Of the 1’349 parcels with a value, half lie between 8.1 m and 11.4 m. The median is 9.7 m and the mean 9.9 m.
Share of parcels by range
- below 8 m23 %
- 8 m to below 12 m60 %
- 12 m to below 20 m17 %
- 20 m and above< 1 %
Number of floors
Of the 1’107 parcels with a value, half lie between 1.8 and 3.0. The median is 2.3 and the mean 2.4.
Share of parcels by range
- below 28 %
- 2 to below 352 %
- 3 to below 538 %
- 5 and above2 %
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 | 2’233 | 67 % |
| Last 60 years | 986 | 97 % |
| Last 40 years | 491 | 94 % |
| Last 20 years | 175 | 101 % |
| Last 15 years | 107 | 100 % |
| Last 10 years | 76 | 99 % |
| Last 5 years | 21 | 90 % |
Open the map at Langnau am Albis
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).