Therwil
Municipality in the canton of Basel-Landschaft · FSO no. 2775
Parcel data from Jul 2025, statistics computed on 26 Sept 2026.
Open map at the Therwil center
The parcel data lists 4’030 parcels in Therwil, covering 7.7 km². 65% of them have at least one registered building. The median parcel measures 443 m².
Key figures
- Parcels
- 4’030
- 3.2% of the canton
- Total area
- 7.7 km²
1.5% of the canton
- Median area
- 443 m²
Canton: 690 m²
Switzerland: 870 m²
- Built share
- 65%
Canton: 56.7%
Switzerland: 52%
- Median year built
- 1979
Canton: 1979
Switzerland: 1976
About Therwil
Therwil ranks 4th of 86 municipalities in the canton of Basel-Landschaft by number of parcels and holds 3.2% of the canton's parcels on 1.5% of its area. The median parcel in Therwil measures 443 m², smaller than the canton median of 690 m². Therwil is more built-up than the canton as a whole: 65% of its parcels have a building, against 56.7% across the canton.
The zones with the most parcels are W2 (33%), W1 (19.7%) and Landwirtschaftszone (11.4%). In total, Therwil uses 40 zone designations.
According to the building register, Therwil has 3’676 buildings with 4’897 dwellings, 1.3 dwellings per building on average. Most residential buildings are single-family houses (80.4%). Non-residential buildings account for 23.2% of all buildings.
Built parcels most often have their newest building from 1961 to 1980 (42.4% of them), and 17.2% have one from 2001 or later. The median year built, 1979, is the same as in the canton as a whole.
Built and unbuilt parcels
Built: 2’618 (65%)Unbuilt: 1’412 (35%)
Parcels by zone
| Zone | Parcels | Area | Built |
|---|---|---|---|
| W2 | 1’331 | 0.50 km² | 87.5% |
| W1 | 793 | 0.46 km² | 86.5% |
| Landwirtschaftszone | 460 | 3.57 km² | 13.9% |
| WG2 | 274 | 0.15 km² | 88.7% |
| Wald | 231 | 1.66 km² | 3.0% |
| Strasse innerhalb ZPS | 201 | 0.24 km² | 3.5% |
| Wohnzonen | 192 | 0.11 km² | 94.3% |
| Strasse ausserhalb ZPS | 145 | 0.18 km² | 0.7% |
| Kernzone | 71 | 0.04 km² | 88.7% |
| W2a | 37 | 0.01 km² | 86.5% |
| Zone für öffentliche Werke und Anlagen | 36 | 0.19 km² | 72.2% |
| 2. Ausbauetappe | 34 | 0.08 km² | 0.0% |
| Other zones (28 labels) | 225 | 0.47 km² | 63.6% |
Zone names are the municipal designations. A canton lists each wording separately.
Building stock
The building register lists 3’676 buildings with 4’897 dwellings here; 1’911 of them are single-family houses.
- Buildings
- 3’676
- Dwellings
- 4’897
- Single-family houses
- 1’911
- Building volume
- 3.4 million m³
Buildings by category
Construction periods
Built parcels by construction period of their newest buildingMaps and geodata for Therwil
geopool works as a GIS and geoportal for Therwil. Its parcel map shows the parcels of the official cadastral survey with their area, their zone from the municipal zoning plan and their buildings, on swisstopo maps. Building zones, the property map and the geodata of each parcel open on the geopool map. The ÖREB extract of a parcel (public-law restrictions on landownership) is in lookup.
Explore more data for Therwil
- Building zones and density Therwilin room
- ÖREB extract Therwilin lookup
- Building age Therwilin roots
- Building heights and headroom Therwilin roofs
- Solar potential Therwilin soolar
- Points of interest and accessibility Therwilin scoore
- Tax rates Therwilin taxoo
More municipalities in the canton of Basel-Landschaft
- Aesch (BL)3’374 parcels
- Allschwil5’096 parcels
- Binningen3’436 parcels
- Ettingen2’615 parcels
- Gelterkinden3’054 parcels
- Laufen2’566 parcels
- Liestal3’981 parcels
- Münchenstein3’502 parcels
- Muttenz4’953 parcels
- Oberwil (BL)3’695 parcels
- Pratteln4’002 parcels
- Reinach (BL)5’931 parcels