Rafz: building age and utilization
Canton of Zurich · 2'020 parcels in municipal zones · Parcel data of September 2026
- Parcels in zones
- 2'020
- Municipal zones
- 21
- Median utilization (ratioV)
- 39%
- Newest building from 2006 or later
- 12%
- Median building height
- 9.8 m
- Median floors
- 1
Overview
Rafz: the parcel data lists 2'020 parcels in 21 municipal zones.
The median volume utilization (ratioV, as built today) is 39%, the average 61%. For comparison: canton of Zurich, median 40%.
12% of the parcels have a newest building from 2006 or later. Their average utilization is 111%, against 67% for all parcels.
The median building height is 9.8 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 | 39 | 2% |
| 2016-2020 | 73 | 4% |
| 2011-2015 | 50 | 2% |
| 2006-2010 | 76 | 4% |
| 1986-2005 | 316 | 16% |
| 1966-1985 | 190 | 9% |
| 1965 or earlier, or no year | 1'276 | 63% |
Utilization by construction window
| Newest building | Parcels | Average utilization |
|---|---|---|
| Built 2021 or later | 39 | 120% |
| Built 2016 or later | 112 | 113% |
| Built 2011 or later | 162 | 116% |
| Built 2006 or later | 238 | 111% |
| Built 1986 or later | 554 | 116% |
| Built 1966 or later | 744 | 110% |
| All parcels | 2'020 | 67% |
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% | 922 | 46% |
| 10-50% | 142 | 7% |
| 50-100% | 460 | 23% |
| 100-150% | 298 | 15% |
| 150-200% | 105 | 5% |
| 200% or more | 71 | 4% |
Median: 39% · Average: 61% · Based on 1'998 parcels with a value.
Building height
Building height in meters, for parcels with a height value.
| Building height | Parcels | Share |
|---|---|---|
| Under 6 m | 86 | 8% |
| 6-10 m | 485 | 45% |
| 10-16 m | 507 | 47% |
| 16-30 m | 5 | 0.5% |
| 30 m or more | 0 | 0% |
Median: 9.8 m · Average: 9.7 m · Based on 1'083 parcels with a value.
Floors
Number of floors, for parcels with a floor count.
| Floors | Parcels | Share |
|---|---|---|
| 1 | 1'000 | 58% |
| 2 | 375 | 22% |
| 3 | 281 | 16% |
| 4 | 56 | 3% |
| 5-6 | 4 | 0.2% |
| 7 or more | 0 | 0% |
Median: 1 · Average: 1.1 · Based on 1'716 parcels with a value.
Other municipalities in the canton
| Place | Parcels | Median utilization | Median floors |
|---|---|---|---|
| Nürensdorf | 2'151 | 41% | 1 |
| Elsau | 2'086 | 10% | 0.9 |
| Schlieren | 2'056 | 51% | 2.2 |
| Hausen am Albis | 2'041 | 37% | 1 |
| Weisslingen | 2'041 | 10% | 0.9 |
| Rümlang | 2'036 | 10% | 0.9 |
| Eglisau | 2'004 | 43% | 1.5 |
| Opfikon | 1'947 | 65% | 2.5 |
| Grüningen | 1'872 | 9% | 0.8 |
| Dietlikon | 1'871 | 30% | 1.1 |
| Zumikon | 1'844 | 41% | 1 |
| Weiningen (ZH) | 1'820 | 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.