Cossonay: observed built density
Municipality in the canton of Vaud · FSO no. 5477 · Parcel data as of July 2025
- Parcels
- 947
< 1 % of the canton
- Municipal zones
- 19
- Median utilization
- 55 %
Canton: 9 %
Switzerland: 10 %
- Median GFZ
- 0.26
Canton: 0.09
Switzerland: 0.09
- Median height
- -
Canton: -
Switzerland: 9.5 m
- Median floors
- 2.4
Canton: 2.4
Switzerland: 2.3
About Cossonay
Cossonay is a municipality in the canton of Vaud. The parcel data lists 947 parcels in 19 municipal zone types. The zone types with the most parcels are Zone centrale 15 LAT (225), Zone d'habitation de faible densité 15 LAT (195) and Zone agricole 16 LAT (130).
The median parcel is built to a volume utilization of 55 %; half of the parcels lie between 6 % and 110 %. The canton median is 9 %, so Cossonay sits above it.
Parcels built in the last 20 years reach a mean volume utilization of 109 % (120 parcels), higher than the 102 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Zone centrale 15 LAT | 225 | 176 % |
| Zone d'habitation de faible densité 15 LAT | 195 | 77 % |
| Zone agricole 16 LAT | 130 | 0 % |
| Zone d'habitation de moyenne densité 15 LAT | 99 | 79 % |
| Zone de desserte 15 LAT | 81 | 0 % |
| Aire forestière 18 LAT | 66 | 0 % |
| Zone d'habitation de très faible densité 15 LAT | 44 | 61 % |
| Zone d'activités économiques 15 LAT | 30 | 95 % |
| Zone affectée à des besoins publics 15 LAT | 17 | 1 % |
| Zone de verdure 15 LAT | 14 | 0 % |
| Zone d'habitation de forte densité 15 LAT | 9 | 90 % |
| Zone d'extraction et de dépôt de matériaux 18 LAT | 8 | 0 % |
| Other zones (7) | 29 | - |
Volume utilization (ratioV)
Of the 929 parcels with a value, half lie between 6 % and 110 %. The median is 55 % and the mean 94 %.
Share of parcels by range
- below 50 %47 %
- 50 % to below 100 %25 %
- 100 % to below 150 %11 %
- 150 % and above17 %
Floor-area ratio (GFZ)
Of the 929 parcels with a value, half lie between 0.06 and 0.68. The median is 0.26 and the mean 0.60.
Share of parcels by range
- below 0.5069 %
- 0.50 to below 1.0013 %
- 1.00 to below 1.505 %
- 1.50 and above13 %
Building height
The parcel data has too few values for this measure here.
Number of floors
Of the 443 parcels with a value, half lie between 1.8 and 3.2. The median is 2.4 and the mean 2.6.
Share of parcels by range
- below 211 %
- 2 to below 342 %
- 3 to below 544 %
- 5 and above4 %
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 | 947 | 102 % |
| Last 60 years | 366 | 107 % |
| Last 40 years | 285 | 104 % |
| Last 20 years | 120 | 109 % |
| Last 15 years | 98 | 113 % |
| Last 10 years | 73 | 109 % |
| Last 5 years | 42 | 103 % |
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).