Chiasso: observed built density
Municipality in the canton of Ticino · FSO no. 5250 · Parcel data as of July 2025
The parcel data covers only part of the land in the canton of Ticino, so figures here may be incomplete.
- Parcels
- 1’303
1 % of the canton
- Municipal zones
- 34
- Median utilization
- 9 %
Canton: 10 %
Switzerland: 10 %
- Median GFZ
- 0.09
Canton: 0.09
Switzerland: 0.09
- Median height
- 11.2 m
Canton: 8.7 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 1.9
Switzerland: 2.3
About Chiasso
Chiasso is a municipality in the canton of Ticino. The parcel data lists 1’303 parcels in 34 municipal zone types. The zone types with the most parcels are ZF - Zona forestale (294), RI7 - Zona residenziale intensiva a 7 piani (GdS II) (145) and RI6 - Zona residenziale intensiva a 6 piani (GdS II) (115).
The median parcel is built to a volume utilization of 9 %; half of the parcels lie between 5 % and 101 %. The canton median is 10 %, close to the level of Chiasso.
The median building height is 11.2 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.09. Parcels built in the last 20 years reach a mean volume utilization of 121 % (73 parcels), higher than the 91 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| ZF - Zona forestale | 294 | 0 % |
| RI7 - Zona residenziale intensiva a 7 piani (GdS II) | 145 | 92 % |
| RI6 - Zona residenziale intensiva a 6 piani (GdS II) | 115 | 88 % |
| Zona agricola (GdS II) | 97 | 0 % |
| RE3 - Zona residenziale estensiva a 3 piani (GdS II) | 90 | 106 % |
| RU2 - Zona residenziale unifamiliare a 2 piani (GdS II) | 87 | 50 % |
| RSe3 - Zona residenziale semi-estensiva a 3 piani (GdS II) | 71 | 83 % |
| RE2 - Zona residenziale estensiva a 2 piani (GdS II) | 64 | 86 % |
| Strada di servizio | 52 | 0 % |
| Nucleo tradizionale (Pedrinate e Seseglio) | 43 | 739 % |
| Zona amministrativa commerciale intensiva a 7 piani (GdS III) | 38 | 44 % |
| Territorio senza destinazione specifica | 35 | 2 % |
| Other zones (22) | 172 | - |
Volume utilization (ratioV)
Of the 1’278 parcels with a value, half lie between 5 % and 101 %. The median is 9 % and the mean 83 %.
Share of parcels by range
- below 50 %59 %
- 50 % to below 100 %15 %
- 100 % to below 150 %14 %
- 150 % and above12 %
Floor-area ratio (GFZ)
Of the 1’278 parcels with a value, half lie between 0.05 and 0.70. The median is 0.09 and the mean 0.52.
Share of parcels by range
- below 0.5067 %
- 0.50 to below 1.0015 %
- 1.00 to below 1.506 %
- 1.50 and above12 %
Building height
Of the 591 parcels with a value, half lie between 8.7 m and 14.6 m. The median is 11.2 m and the mean 12.6 m.
Share of parcels by range
- below 8 m18 %
- 8 m to below 12 m41 %
- 12 m to below 20 m28 %
- 20 m and above13 %
Number of floors
Of the 617 parcels with a value, half lie between 1.5 and 3.1. The median is 2.1 and the mean 2.7.
Share of parcels by range
- below 223 %
- 2 to below 344 %
- 3 to below 519 %
- 5 and above15 %
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 | 1’303 | 91 % |
| Last 60 years | 301 | 149 % |
| Last 40 years | 202 | 146 % |
| Last 20 years | 73 | 121 % |
| Last 15 years | 52 | 103 % |
| Last 10 years | 25 | 98 % |
| Last 5 years | 10 | 88 % |
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).