Wittnau: building age and utilization
Canton of Aargau · 1'476 parcels in municipal zones · Parcel data of September 2026
- Parcels in zones
- 1'476
- Municipal zones
- 16
- Median utilization (ratioV)
- 7%
- Newest building from 2006 or later
- 10%
- Median building height
- 9.5 m
- Median floors
- 0.7
Overview
Wittnau: the parcel data lists 1'476 parcels in 16 municipal zones.
The median volume utilization (ratioV, as built today) is 7%, the average 42%. For comparison: canton of Aargau, median 35%.
10% of the parcels have a newest building from 2006 or later. Their average utilization is 108%, against 48% for all parcels.
The median building height is 9.5 m and the median number of floors is 0.7.
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 | 25 | 2% |
| 2016-2020 | 35 | 2% |
| 2011-2015 | 47 | 3% |
| 2006-2010 | 41 | 3% |
| 1986-2005 | 145 | 10% |
| 1966-1985 | 106 | 7% |
| 1965 or earlier, or no year | 1'077 | 73% |
Utilization by construction window
| Newest building | Parcels | Average utilization |
|---|---|---|
| Built 2021 or later | 25 | 103% |
| Built 2016 or later | 60 | 102% |
| Built 2011 or later | 107 | 106% |
| Built 2006 or later | 148 | 108% |
| Built 1986 or later | 293 | 118% |
| Built 1966 or later | 399 | 127% |
| All parcels | 1'476 | 48% |
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% | 984 | 67% |
| 10-50% | 64 | 4% |
| 50-100% | 198 | 14% |
| 100-150% | 142 | 10% |
| 150-200% | 33 | 2% |
| 200% or more | 37 | 3% |
Median: 7% · Average: 42% · Based on 1'458 parcels with a value.
Building height
Building height in meters, for parcels with a height value.
| Building height | Parcels | Share |
|---|---|---|
| Under 6 m | 57 | 12% |
| 6-10 m | 214 | 46% |
| 10-16 m | 196 | 42% |
| 16-30 m | 3 | 0.6% |
| 30 m or more | 0 | 0% |
Median: 9.5 m · Average: 9.3 m · Based on 470 parcels with a value.
Floors
Number of floors, for parcels with a floor count.
| Floors | Parcels | Share |
|---|---|---|
| 1 | 969 | 76% |
| 2 | 212 | 17% |
| 3 | 79 | 6% |
| 4 | 15 | 1% |
| 5-6 | 0 | 0% |
| 7 or more | 0 | 0% |
Median: 0.7 · Average: 0.6 · Based on 1'275 parcels with a value.
Other municipalities in the canton
| Place | Parcels | Median utilization | Median floors |
|---|---|---|---|
| Boswil | 1'538 | 18% | 0.9 |
| Döttingen | 1'535 | 43% | 1.4 |
| Birmenstorf (AG) | 1'520 | 31% | 0.9 |
| Mellingen | 1'520 | 59% | 2.3 |
| Rudolfstetten-Friedlisberg | 1'511 | 63% | 2.1 |
| Sarmenstorf | 1'495 | 62% | 2 |
| Lupfig | 1'452 | 10% | 0.9 |
| Remigen | 1'451 | 7% | 0.6 |
| Berikon | 1'436 | 70% | 2.2 |
| Strengelbach | 1'421 | 76% | 2.3 |
| Schafisheim | 1'409 | 60% | 2.1 |
| Auenstein | 1'405 | 10% | 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.