Aarau: building age and utilization
Canton of Aargau · 4'831 parcels in municipal zones · Parcel data of September 2026
- Parcels in zones
- 4'831
- Municipal zones
- 31
- Median utilization (ratioV)
- 80%
- Newest building from 2006 or later
- 11%
- Median building height
- 10.4 m
- Median floors
- 2.5
Overview
Aarau: the parcel data lists 4'831 parcels in 31 municipal zones.
The median volume utilization (ratioV, as built today) is 80%, the average 89%. For comparison: canton of Aargau, median 35%.
11% of the parcels have a newest building from 2006 or later. Their average utilization is 119%, against 92% for all parcels.
The median building height is 10.4 m and the median number of floors is 2.5.
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 | 71 | 1% |
| 2016-2020 | 112 | 2% |
| 2011-2015 | 179 | 4% |
| 2006-2010 | 192 | 4% |
| 1986-2005 | 656 | 14% |
| 1966-1985 | 560 | 12% |
| 1965 or earlier, or no year | 3'061 | 63% |
Utilization by construction window
| Newest building | Parcels | Average utilization |
|---|---|---|
| Built 2021 or later | 71 | 122% |
| Built 2016 or later | 183 | 126% |
| Built 2011 or later | 362 | 129% |
| Built 2006 or later | 554 | 119% |
| Built 1986 or later | 1'210 | 116% |
| Built 1966 or later | 1'770 | 112% |
| All parcels | 4'831 | 92% |
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% | 1'113 | 23% |
| 10-50% | 312 | 7% |
| 50-100% | 1'703 | 36% |
| 100-150% | 1'053 | 22% |
| 150-200% | 364 | 8% |
| 200% or more | 242 | 5% |
Median: 80% · Average: 89% · Based on 4'787 parcels with a value.
Building height
Building height in meters, for parcels with a height value.
| Building height | Parcels | Share |
|---|---|---|
| Under 6 m | 179 | 5% |
| 6-10 m | 1'439 | 40% |
| 10-16 m | 1'535 | 43% |
| 16-30 m | 431 | 12% |
| 30 m or more | 25 | 0.7% |
Median: 10.4 m · Average: 11.3 m · Based on 3'609 parcels with a value.
Floors
Number of floors, for parcels with a floor count.
| Floors | Parcels | Share |
|---|---|---|
| 1 | 1'275 | 33% |
| 2 | 1'304 | 34% |
| 3 | 861 | 23% |
| 4 | 206 | 5% |
| 5-6 | 139 | 4% |
| 7 or more | 34 | 0.9% |
Median: 2.5 · Average: 1.9 · Based on 3'819 parcels with a value.
Other municipalities in the canton
| Place | Parcels | Median utilization | Median floors |
|---|---|---|---|
| Zurzach | 13'145 | 9% | 0.5 |
| Böztal | 8'570 | 8% | 0.5 |
| Wohlen (AG) | 4'894 | 68% | 2.2 |
| Wettingen | 4'595 | 62% | 2.4 |
| Brugg | 4'570 | 70% | 2.2 |
| Herznach-Ueken | 4'523 | 9% | 0.5 |
| Baden | 3'934 | 68% | 2.8 |
| Küttigen | 3'626 | 9% | 0.9 |
| Reinach (AG) | 3'557 | 44% | 1 |
| Möhlin | 3'496 | 67% | 2.2 |
| Würenlos | 3'449 | 9% | 0.8 |
| Oftringen | 3'363 | 77% | 2.3 |
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.