Lenzburg: observed built density
Municipality in the canton of Aargau · FSO no. 4201 · Parcel data as of July 2025
- Parcels
- 2’354
1 % of the canton
- Municipal zones
- 36
- Median utilization
- 70 %
Canton: 35 %
Switzerland: 10 %
- Median GFZ
- 0.42
Canton: 0.13
Switzerland: 0.09
- Median height
- 9.8 m
Canton: 9.3 m
Switzerland: 9.5 m
- Median floors
- 2.5
Canton: 2.2
Switzerland: 2.3
About Lenzburg
Lenzburg is a municipality in the canton of Aargau. The parcel data lists 2’354 parcels in 36 municipal zone types. The zone types with the most parcels are Wohnzone W2a (910), Wohn- und Arbeitszone WA3 (219) and Landwirtschaftszone (117).
The median parcel is built to a volume utilization of 70 %; half of the parcels lie between 9 % and 109 %. The canton median is 35 %, so Lenzburg sits above it.
The median building height is 9.8 m at 2.5 floors, and the median floor-area ratio (GFZ) is 0.42. Parcels built in the last 20 years reach a mean volume utilization of 111 % (380 parcels), higher than the 96 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone W2a | 910 | 82 % |
| Wohn- und Arbeitszone WA3 | 219 | 70 % |
| Landwirtschaftszone | 117 | 0 % |
| Wohnzone W3 | 104 | 58 % |
| Altstadtzone | 101 | 144 % |
| Ringzone 3G | 86 | 88 % |
| Wohnzone W2b | 82 | 67 % |
| Weitere Schutzzone B-L | 79 | 126 % |
| Arbeitszone AR1 | 62 | 41 % |
| Ringzone 4G | 59 | 63 % |
| Arbeitszone AR2 | 58 | 3 % |
| Wohnzone W4 | 55 | 90 % |
| Other zones (24) | 422 | - |
Volume utilization (ratioV)
Of the 2’318 parcels with a value, half lie between 9 % and 109 %. The median is 70 % and the mean 79 %.
Share of parcels by range
- below 50 %37 %
- 50 % to below 100 %33 %
- 100 % to below 150 %17 %
- 150 % and above13 %
Floor-area ratio (GFZ)
Of the 2’318 parcels with a value, half lie between 0.08 and 0.78. The median is 0.42 and the mean 0.63.
Share of parcels by range
- below 0.5060 %
- 0.50 to below 1.0025 %
- 1.00 to below 1.507 %
- 1.50 and above9 %
Building height
Of the 1’641 parcels with a value, half lie between 8.1 m and 12.5 m. The median is 9.8 m and the mean 10.6 m.
Share of parcels by range
- below 8 m24 %
- 8 m to below 12 m48 %
- 12 m to below 20 m25 %
- 20 m and above3 %
Number of floors
Of the 1’311 parcels with a value, half lie between 1.9 and 3.3. The median is 2.5 and the mean 2.7.
Share of parcels by range
- below 210 %
- 2 to below 342 %
- 3 to below 542 %
- 5 and above6 %
Building age cohorts
Mean volume utilization of the parcels built inside each window, from all years on record down to the last five. The windows overlap: the last 20 years include the last 5.
| Built in | Parcels | Mean utilization |
|---|---|---|
| All years | 2’354 | 96 % |
| Last 60 years | 1’055 | 115 % |
| Last 40 years | 777 | 119 % |
| Last 20 years | 380 | 111 % |
| Last 15 years | 242 | 114 % |
| Last 10 years | 137 | 111 % |
| Last 5 years | 28 | 113 % |
How to read this page
room shows observed built density: what has been built on the parcels, not what the zoning permits. Volume utilization (ratioV) compares the built volume of a parcel with the reference volume of its municipal zone type. The floor-area ratio (GFZ) is floor area divided by parcel area; building height and number of floors are taken from the buildings on a parcel. Figures pool all municipal zones of the area. Medians and quartiles are read from bins 10 points (ratioV), 0.1 (GFZ), 2 m (height) and 1 floor wide, so they are exact to within one bin; means are exact. A parcel counts in a distribution only when the parcel data has a value for it. The floors distribution leaves out parcels without a building (0 floors).