Seon: building age and utilization
Canton of Aargau · 2'885 parcels in municipal zones · Parcel data of September 2026
- Parcels in zones
- 2'885
- Municipal zones
- 23
- Median utilization (ratioV)
- 32%
- Newest building from 2006 or later
- 12%
- Median building height
- 9.1 m
- Median floors
- 0.9
Overview
Seon: the parcel data lists 2'885 parcels in 23 municipal zones.
The median volume utilization (ratioV, as built today) is 32%, the average 56%. For comparison: canton of Aargau, median 35%.
12% of the parcels have a newest building from 2006 or later. Their average utilization is 120%, against 59% for all parcels.
The median building height is 9.1 m and the median number of floors is 0.9.
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 | 114 | 4% |
| 2016-2020 | 65 | 2% |
| 2011-2015 | 79 | 3% |
| 2006-2010 | 90 | 3% |
| 1986-2005 | 406 | 14% |
| 1966-1985 | 315 | 11% |
| 1965 or earlier, or no year | 1'816 | 63% |
Utilization by construction window
| Newest building | Parcels | Average utilization |
|---|---|---|
| Built 2021 or later | 114 | 133% |
| Built 2016 or later | 179 | 124% |
| Built 2011 or later | 258 | 121% |
| Built 2006 or later | 348 | 120% |
| Built 1986 or later | 754 | 117% |
| Built 1966 or later | 1'069 | 110% |
| All parcels | 2'885 | 59% |
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% | 1'371 | 48% |
| 10-50% | 145 | 5% |
| 50-100% | 697 | 24% |
| 100-150% | 402 | 14% |
| 150-200% | 129 | 5% |
| 200% or more | 112 | 4% |
Median: 32% · Average: 56% · Based on 2'856 parcels with a value.
Building height
Building height in meters, for parcels with a height value.
| Building height | Parcels | Share |
|---|---|---|
| Under 6 m | 72 | 5% |
| 6-10 m | 841 | 61% |
| 10-16 m | 457 | 33% |
| 16-30 m | 14 | 1% |
| 30 m or more | 0 | 0% |
Median: 9.1 m · Average: 9.3 m · Based on 1'384 parcels with a value.
Floors
Number of floors, for parcels with a floor count.
| Floors | Parcels | Share |
|---|---|---|
| 1 | 1'486 | 60% |
| 2 | 670 | 27% |
| 3 | 286 | 12% |
| 4 | 35 | 1% |
| 5-6 | 4 | 0.2% |
| 7 or more | 0 | 0% |
Median: 0.9 · Average: 1 · Based on 2'481 parcels with a value.
Other municipalities in the canton
| Place | Parcels | Median utilization | Median floors |
|---|---|---|---|
| Zofingen | 3'247 | 75% | 2.5 |
| Gränichen | 3'206 | 68% | 2.1 |
| Rothrist | 3'181 | 70% | 2.2 |
| Obersiggenthal | 3'081 | 32% | 0.9 |
| Villmergen | 3'044 | 54% | 1 |
| Mettauertal | 2'902 | 7% | 0.6 |
| Untersiggenthal | 2'873 | 34% | 1 |
| Muri (AG) | 2'537 | 62% | 2.1 |
| Kaisten | 2'517 | 8% | 0.7 |
| Sins | 2'495 | 9% | 0.8 |
| Villigen | 2'494 | 7% | 0.6 |
| Seengen | 2'484 | 9% | 0.8 |
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.