Porrentruy: observed built density
Municipality in the canton of Jura · FSO no. 6800 · Parcel data as of July 2025
The parcel data covers only part of the land in the canton of Jura, so figures here may be incomplete.
- Parcels
- 2’432
8 % of the canton
- Municipal zones
- 63
- Median utilization
- 98 %
Canton: 87 %
Switzerland: 10 %
- Median GFZ
- 0.33
Canton: 0.31
Switzerland: 0.09
- Median height
- -
Canton: -
Switzerland: 9.5 m
- Median floors
- 2.6
Canton: 2.2
Switzerland: 2.3
About Porrentruy
Porrentruy is a municipality in the canton of Jura. The parcel data lists 2’432 parcels in 63 municipal zone types. The zone types with the most parcels are 6800 Zone d'habitation HA (865), 6800 Zone centre CA (330) and 6800 Zone mixte MB (134).
The median parcel is built to a volume utilization of 98 %; half of the parcels lie between 23 % and 163 %. The canton median is 87 %, so Porrentruy sits above it.
Parcels built in the last 20 years reach a mean volume utilization of 107 % (307 parcels), lower than the 187 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| 6800 Zone d'habitation HA | 865 | 95 % |
| 6800 Zone centre CA | 330 | 653 % |
| 6800 Zone mixte MB | 134 | 100 % |
| 6800 Zone mixte MBb | 89 | 133 % |
| 6790 Zone de transport ZT | 82 | 0 % |
| 6800 Zone centre CC | 73 | 155 % |
| 6800 Zone d'habitation HB | 73 | 100 % |
| 6800 Zone mixte MBi | 73 | 84 % |
| 6800 Zone d'habitation HAb | 69 | 97 % |
| 6800 Zone centre CB | 64 | 140 % |
| 6800 Zone de transport ZT | 49 | 0 % |
| 6800 Zone d'activités AA | 43 | 60 % |
| Other zones (51) | 488 | - |
Volume utilization (ratioV)
Of the 2’361 parcels with a value, half lie between 23 % and 163 %. The median is 98 % and the mean 176 %.
Share of parcels by range
- below 50 %29 %
- 50 % to below 100 %22 %
- 100 % to below 150 %21 %
- 150 % and above28 %
Floor-area ratio (GFZ)
Of the 2’361 parcels with a value, half lie between 0.10 and 0.65. The median is 0.33 and the mean 0.78.
Share of parcels by range
- below 0.5068 %
- 0.50 to below 1.0015 %
- 1.00 to below 1.504 %
- 1.50 and above12 %
Building height
The parcel data has too few values for this measure here.
Number of floors
Of the 1’330 parcels with a value, half lie between 1.9 and 3.4. The median is 2.6 and the mean 2.8.
Share of parcels by range
- below 27 %
- 2 to below 340 %
- 3 to below 546 %
- 5 and above6 %
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 | 2’432 | 187 % |
| Last 60 years | 918 | 122 % |
| Last 40 years | 673 | 122 % |
| Last 20 years | 307 | 107 % |
| Last 15 years | 218 | 110 % |
| Last 10 years | 128 | 111 % |
| Last 5 years | 61 | 117 % |
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).