Au (SG): building age and utilization
Canton of St. Gallen · 2'278 parcels in municipal zones · Parcel data of September 2026
- Parcels in zones
- 2'278
- Municipal zones
- 23
- Median utilization (ratioV)
- 70%
- Newest building from 2006 or later
- 13%
- Median building height
- 9.2 m
- Median floors
- 2.3
Overview
Au (SG): the parcel data lists 2'278 parcels in 23 municipal zones.
The median volume utilization (ratioV, as built today) is 70%, the average 69%. For comparison: canton of St. Gallen, median 58%.
13% of the parcels have a newest building from 2006 or later. Their average utilization is 130%, against 76% for all parcels.
The median building height is 9.2 m and the median number of floors is 2.3.
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 | 70 | 3% |
| 2016-2020 | 71 | 3% |
| 2011-2015 | 75 | 3% |
| 2006-2010 | 75 | 3% |
| 1986-2005 | 465 | 20% |
| 1966-1985 | 340 | 15% |
| 1965 or earlier, or no year | 1'182 | 52% |
Utilization by construction window
| Newest building | Parcels | Average utilization |
|---|---|---|
| Built 2021 or later | 70 | 200% |
| Built 2016 or later | 141 | 160% |
| Built 2011 or later | 216 | 142% |
| Built 2006 or later | 291 | 130% |
| Built 1986 or later | 756 | 114% |
| Built 1966 or later | 1'096 | 102% |
| All parcels | 2'278 | 76% |
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% | 596 | 27% |
| 10-50% | 204 | 9% |
| 50-100% | 842 | 37% |
| 100-150% | 451 | 20% |
| 150-200% | 112 | 5% |
| 200% or more | 41 | 2% |
Median: 70% · Average: 69% · Based on 2'246 parcels with a value.
Building height
Building height in meters, for parcels with a height value.
| Building height | Parcels | Share |
|---|---|---|
| Under 6 m | 108 | 7% |
| 6-10 m | 940 | 58% |
| 10-16 m | 510 | 32% |
| 16-30 m | 59 | 4% |
| 30 m or more | 2 | 0.1% |
Median: 9.2 m · Average: 9.6 m · Based on 1'619 parcels with a value.
Floors
Number of floors, for parcels with a floor count.
| Floors | Parcels | Share |
|---|---|---|
| 1 | 682 | 37% |
| 2 | 718 | 39% |
| 3 | 280 | 15% |
| 4 | 129 | 7% |
| 5-6 | 45 | 2% |
| 7 or more | 2 | 0.1% |
Median: 2.3 · Average: 1.7 · Based on 1'856 parcels with a value.
Other municipalities in the canton
| Place | Parcels | Median utilization | Median floors |
|---|---|---|---|
| Diepoldsau | 2'587 | 70% | 2.2 |
| Bütschwil-Ganterschwil | 2'487 | 50% | 1.5 |
| Quarten | 2'477 | 43% | 1.8 |
| Oberuzwil | 2'408 | 61% | 2.2 |
| Gaiserwald | 2'353 | 65% | 2.3 |
| Waldkirch | 2'314 | 10% | 0.8 |
| Berneck | 2'248 | 39% | 1 |
| Gams | 2'204 | 40% | 1.1 |
| Bad Ragaz | 2'183 | 69% | 2.3 |
| Balgach | 2'159 | 56% | 2.1 |
| Sargans | 2'089 | 58% | 2.2 |
| Goldach | 2'079 | 77% | 2.5 |
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.