Birrhard: building age and utilization
Canton of Aargau · 569 parcels in municipal zones · Parcel data of September 2026
- Parcels in zones
- 569
- Municipal zones
- 13
- Median utilization (ratioV)
- 42%
- Newest building from 2006 or later
- 15%
- Median building height
- 8.9 m
- Median floors
- 1
Overview
Birrhard: the parcel data lists 569 parcels in 13 municipal zones.
The median volume utilization (ratioV, as built today) is 42%, the average 59%. For comparison: canton of Aargau, median 35%.
15% of the parcels have a newest building from 2006 or later. Their average utilization is 113%, against 62% for all parcels.
The median building height is 8.9 m and the median number of floors is 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 | 28 | 5% |
| 2016-2020 | 19 | 3% |
| 2011-2015 | 18 | 3% |
| 2006-2010 | 22 | 4% |
| 1986-2005 | 80 | 14% |
| 1966-1985 | 90 | 16% |
| 1965 or earlier, or no year | 312 | 55% |
Utilization by construction window
| Newest building | Parcels | Average utilization |
|---|---|---|
| Built 2021 or later | 28 | 139% |
| Built 2016 or later | 47 | 133% |
| Built 2011 or later | 65 | 122% |
| Built 2006 or later | 87 | 113% |
| Built 1986 or later | 167 | 111% |
| Built 1966 or later | 257 | 105% |
| All parcels | 569 | 62% |
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% | 259 | 46% |
| 10-50% | 34 | 6% |
| 50-100% | 125 | 22% |
| 100-150% | 90 | 16% |
| 150-200% | 30 | 5% |
| 200% or more | 22 | 4% |
Median: 42% · Average: 59% · Based on 560 parcels with a value.
Building height
Building height in meters, for parcels with a height value.
| Building height | Parcels | Share |
|---|---|---|
| Under 6 m | 20 | 7% |
| 6-10 m | 175 | 63% |
| 10-16 m | 82 | 30% |
| 16-30 m | 0 | 0% |
| 30 m or more | 0 | 0% |
Median: 8.9 m · Average: 8.9 m · Based on 277 parcels with a value.
Floors
Number of floors, for parcels with a floor count.
| Floors | Parcels | Share |
|---|---|---|
| 1 | 296 | 59% |
| 2 | 118 | 23% |
| 3 | 81 | 16% |
| 4 | 6 | 1% |
| 5-6 | 2 | 0.4% |
| 7 or more | 0 | 0% |
Median: 1 · Average: 1.1 · Based on 503 parcels with a value.
Other municipalities in the canton
| Place | Parcels | Median utilization | Median floors |
|---|---|---|---|
| Siglistorf | 647 | 8% | 0.7 |
| Eggenwil | 646 | 9% | 0.8 |
| Freienwil | 611 | 10% | 0.9 |
| Holderbank (AG) | 603 | 31% | 0.9 |
| Büttikon | 594 | 10% | 0.8 |
| Dietwil | 589 | 33% | 0.9 |
| Ammerswil | 555 | 9% | 0.9 |
| Rottenschwil | 553 | 10% | 0.8 |
| Fisibach | 551 | 7% | 0.6 |
| Holziken | 542 | 50% | 1.6 |
| Mülligen | 540 | 9% | 0.8 |
| Leimbach (AG) | 517 | 8% | 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.