Cologny: building age and utilization
Canton of Geneva · 1'329 parcels in municipal zones · Parcel data of September 2026
- Parcels in zones
- 1'329
- Municipal zones
- 9
- Median utilization (ratioV)
- 70%
- Newest building from 2006 or later
- 19%
- Median building height
- 9.3 m
- Median floors
- 2.1
Overview
Cologny: the parcel data lists 1'329 parcels in 9 municipal zones.
The median volume utilization (ratioV, as built today) is 70%, the average 78%. For comparison: canton of Geneva, median 49%.
19% of the parcels have a newest building from 2006 or later. Their average utilization is 107%, against 82% for all parcels.
The median building height is 9.3 m and the median number of floors is 2.1.
Building age
Each parcel is counted by the construction year of its newest building. The oldest band also holds parcels without a building year, such as unbuilt land.
| Newest building | Parcels | Share |
|---|---|---|
| 2021 or later | 55 | 4% |
| 2016-2020 | 57 | 4% |
| 2011-2015 | 69 | 5% |
| 2006-2010 | 74 | 6% |
| 1986-2005 | 289 | 22% |
| 1966-1985 | 167 | 13% |
| 1965 or earlier, or no year | 618 | 47% |
Utilization by construction window
| Newest building | Parcels | Average utilization |
|---|---|---|
| Built 2021 or later | 55 | 118% |
| Built 2016 or later | 112 | 119% |
| Built 2011 or later | 181 | 111% |
| Built 2006 or later | 255 | 107% |
| Built 1986 or later | 544 | 107% |
| Built 1966 or later | 711 | 104% |
| All parcels | 1'329 | 82% |
Utilization (ratioV)
ratioV is the volume utilization of a parcel in percent, as built today; values above 100% occur on densely built parcels. The lowest bucket is mostly land with little or no building volume.
| Utilization (ratioV) | Parcels | Share |
|---|---|---|
| Under 10% | 360 | 27% |
| 10-50% | 134 | 10% |
| 50-100% | 450 | 34% |
| 100-150% | 240 | 18% |
| 150-200% | 63 | 5% |
| 200% or more | 70 | 5% |
Median: 70% · Average: 78% · Based on 1'317 parcels with a value.
Building height
Building height in meters, for parcels with a height value.
| Building height | Parcels | Share |
|---|---|---|
| Under 6 m | 61 | 6% |
| 6-10 m | 522 | 55% |
| 10-16 m | 316 | 33% |
| 16-30 m | 38 | 4% |
| 30 m or more | 7 | 0.7% |
Median: 9.3 m · Average: 10 m · Based on 944 parcels with a value.
Floors
Number of floors, for parcels with a floor count.
| Floors | Parcels | Share |
|---|---|---|
| 1 | 514 | 47% |
| 2 | 338 | 31% |
| 3 | 201 | 18% |
| 4 | 14 | 1% |
| 5-6 | 20 | 2% |
| 7 or more | 14 | 1% |
Median: 2.1 · Average: 1.6 · Based on 1'101 parcels with a value.
Other municipalities in the canton
| Place | Parcels | Median utilization | Median floors |
|---|---|---|---|
| Versoix | 2'062 | 62% | 1.7 |
| Onex | 1'596 | 79% | 2.2 |
| Carouge (GE) | 1'564 | 73% | 1.9 |
| Anières | 1'462 | 9% | 0.8 |
| Le Grand-Saconnex | 1'449 | 72% | 2.1 |
| Avusy | 1'350 | 8% | 0.7 |
| Pregny-Chambésy | 1'327 | 61% | 2.2 |
| Chancy | 1'201 | 7% | 0.6 |
| Vandoeuvres | 1'195 | 65% | 2 |
| Confignon | 1'155 | 67% | 1.9 |
| Chêne-Bourg | 1'115 | 60% | 2.2 |
| Corsier (GE) | 1'106 | 12% | 0.9 |
Explore
Method and data
The figures come from the Swiss parcel data (zone statistics of the RES service, pulled in September 2026). Each municipal zone is summarized on its own; a municipality is the sum of its zones, a canton the sum of its municipalities and Switzerland the sum of the cantons. Parcels outside a municipal zone are not counted.
Age uses the construction year of the newest building on a parcel. The distributions leave out the most extreme values, so the parcels with a value can be fewer than all parcels. Percentages are shares of the counts shown; medians are read from the buckets and are exact to within one bucket.
The pages describe what has been built and measured. They are not a forecast, a valuation or a statement of what may be built.