Birsfelden: observed built density
Municipality in the canton of Basel-Landschaft · FSO no. 2766 · Parcel data as of July 2025
- Parcels
- 1’100
1 % of the canton
- Municipal zones
- 25
- Median utilization
- 91 %
Canton: 41 %
Switzerland: 10 %
- Median GFZ
- 0.87
Canton: 0.22
Switzerland: 0.09
- Median height
- 12.6 m
Canton: 9.6 m
Switzerland: 9.5 m
- Median floors
- 2.8
Canton: 2.1
Switzerland: 2.3
About Birsfelden
Birsfelden is a municipality in the canton of Basel-Landschaft. The parcel data lists 1’100 parcels in 25 municipal zone types. The zone types with the most parcels are Wohnzone W3 (374), Wohnzone W4 (138) and Spezialzone Ortsbilderhaltung (130).
The median parcel is built to a volume utilization of 91 %; half of the parcels lie between 56 % and 127 %. The canton median is 41 %, so Birsfelden sits above it.
The median building height is 12.6 m at 2.8 floors, and the median floor-area ratio (GFZ) is 0.87. Parcels built in the last 20 years reach a mean volume utilization of 100 % (95 parcels), close to the 102 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone W3 | 374 | 84 % |
| Wohnzone W4 | 138 | 104 % |
| Spezialzone Ortsbilderhaltung | 130 | 207 % |
| Wohnzone W2 | 121 | 91 % |
| Strasse innerhalb ZPS | 90 | 0 % |
| Wohn-/Geschäftszone WG4 | 57 | 104 % |
| Wohn-/Geschäftszone WG3 | 37 | 100 % |
| Wohn-/Geschäftszone WG5 | 29 | 74 % |
| Wohnzonen | 20 | 109 % |
| Zone für öffentliche Werke und Anlagen | 18 | 85 % |
| Industrie- und Gewerbezone | 15 | 104 % |
| Industriezone | 14 | 77 % |
| Other zones (13) | 57 | - |
Volume utilization (ratioV)
Of the 1’064 parcels with a value, half lie between 56 % and 127 %. The median is 91 % and the mean 99 %.
Share of parcels by range
- below 50 %22 %
- 50 % to below 100 %36 %
- 100 % to below 150 %26 %
- 150 % and above17 %
Floor-area ratio (GFZ)
Of the 1’063 parcels with a value, half lie between 0.48 and 1.26. The median is 0.87 and the mean 0.92.
Share of parcels by range
- below 0.5026 %
- 0.50 to below 1.0033 %
- 1.00 to below 1.5024 %
- 1.50 and above16 %
Building height
Of the 895 parcels with a value, half lie between 10.4 m and 14.7 m. The median is 12.6 m and the mean 12.9 m.
Share of parcels by range
- below 8 m5 %
- 8 m to below 12 m38 %
- 12 m to below 20 m54 %
- 20 m and above4 %
Number of floors
Of the 836 parcels with a value, half lie between 1.7 and 3.5. The median is 2.8 and the mean 2.8.
Share of parcels by range
- below 221 %
- 2 to below 317 %
- 3 to below 553 %
- 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 | 1’100 | 102 % |
| Last 60 years | 315 | 104 % |
| Last 40 years | 192 | 99 % |
| Last 20 years | 95 | 100 % |
| Last 15 years | 59 | 100 % |
| Last 10 years | 37 | 101 % |
| Last 5 years | 22 | 102 % |
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).