Lohn-Ammannsegg: observed built density
Municipality in the canton of Solothurn · FSO no. 2526 · Parcel data as of July 2025
- Parcels
- 1’236
1 % of the canton
- Municipal zones
- 20
- Median utilization
- 74 %
Canton: 29 %
Switzerland: 10 %
- Median GFZ
- 0.32
Canton: 0.10
Switzerland: 0.09
- Median height
- 8.3 m
Canton: 9.2 m
Switzerland: 9.5 m
- Median floors
- 2.1
Canton: 2.2
Switzerland: 2.3
About Lohn-Ammannsegg
Lohn-Ammannsegg is a municipality in the canton of Solothurn. The parcel data lists 1’236 parcels in 20 municipal zone types. The zone types with the most parcels are Wohnzone, 2-geschossig dicht (547), Wohnzone, 2-geschossig (178) and Landwirtschaftszone (136).
The median parcel is built to a volume utilization of 74 %; half of the parcels lie between 8 % and 102 %. The canton median is 29 %, so Lohn-Ammannsegg sits above it.
The median building height is 8.3 m at 2.1 floors, and the median floor-area ratio (GFZ) is 0.32. Parcels built in the last 20 years reach a mean volume utilization of 122 % (143 parcels), higher than the 70 % across all building years.
Parcels by municipal zone
| Zone | Parcels | Median utilization |
|---|---|---|
| Wohnzone, 2-geschossig dicht | 547 | 94 % |
| Wohnzone, 2-geschossig | 178 | 71 % |
| Landwirtschaftszone | 136 | 0 % |
| Verkehrszone Strasse | 96 | 0 % |
| Wohnzone, 3-geschossig ohne Attika | 66 | 74 % |
| Kernzone mit Gestaltungsplanpflicht gemäss §4 | 49 | 88 % |
| Verkehrsfläche Strasse | 44 | 0 % |
| Wald | 40 | 0 % |
| Gewerbezone mit Wohnnutzung, 3-geschossig | 26 | 47 % |
| Zentrumszone Bahnhof mit Gestaltungsplanpflicht gemäss §4 | 17 | 77 % |
| Arbeitszone mit Gestaltungsplanpflicht gemäss §4 | 12 | 103 % |
| Zone für öffentliche Bauten und Anlagen | 8 | 61 % |
| Other zones (8) | 17 | - |
Volume utilization (ratioV)
Of the 1’216 parcels with a value, half lie between 8 % and 102 %. The median is 74 % and the mean 67 %.
Share of parcels by range
- below 50 %37 %
- 50 % to below 100 %36 %
- 100 % to below 150 %20 %
- 150 % and above7 %
Floor-area ratio (GFZ)
Of the 1’216 parcels with a value, half lie between 0.08 and 0.45. The median is 0.32 and the mean 0.31.
Share of parcels by range
- below 0.5081 %
- 0.50 to below 1.0017 %
- 1.00 to below 1.502 %
- 1.50 and above< 1 %
Building height
Of the 704 parcels with a value, half lie between 7.0 m and 9.7 m. The median is 8.3 m and the mean 8.6 m.
Share of parcels by range
- below 8 m45 %
- 8 m to below 12 m48 %
- 12 m to below 20 m7 %
- 20 m and above< 1 %
Number of floors
Of the 714 parcels with a value, half lie between 1.7 and 2.6. The median is 2.1 and the mean 2.2.
Share of parcels by range
- below 213 %
- 2 to below 358 %
- 3 to below 528 %
- 5 and above< 1 %
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 | 1’236 | 70 % |
| Last 60 years | 623 | 104 % |
| Last 40 years | 423 | 113 % |
| Last 20 years | 143 | 122 % |
| Last 15 years | 109 | 120 % |
| Last 10 years | 63 | 135 % |
| Last 5 years | 27 | 171 % |
Open the map at Lohn-Ammannsegg
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).