Canton of St. Gallen: parcel changes
Canton · 26 municipalities with changes
Counted by the month a change first appeared in the monthly swisstopo data: Sept 2025 to Aug 2026. Data collected 30 Sept 2026.
Between Sept 2025 and Aug 2026, snoop detected 183 parcel changes in the canton of St. Gallen: 0 splits, 0 merges, 73 new parcels and 87 changed parcels. 23 parcels were removed. 77.6% of the changes are in building zones.
Key figures
- Parcel changes
- 183
- 6.1% of Switzerland
- Parcel splits
- 0
0% of Switzerland
- Parcel merges
- 0
0% of Switzerland
- New parcels
- 73
5.9% of Switzerland
- Changed parcels
- 87
85 resized, 2 re-identified
7.3% of Switzerland
About St. Gallen
St. Gallen is number 7 of 26 cantons by parcel changes in this period. St. Gallen accounts for 6.1% of the parcel changes in Switzerland.
The municipalities with the most parcel changes are Benken (SG), St. Gallen and Grabs.
The busiest month was Jul 2026, with 95 changes.
Timeline
Change types
| Type | Changes | Share |
|---|---|---|
| SplitsOne parcel became several. | 0 | 0.0% |
| MergesSeveral parcels became one. | 0 | 0.0% |
| New parcelsA parcel that did not exist before. | 73 | 39.9% |
| Removed parcelsA parcel that no longer exists. | 23 | 12.6% |
| Re-identifiedSame footprint, new EGRID. | 2 | 1.1% |
| ResizedSame EGRID, changed boundary or area. | 85 | 46.4% |
142 of the 183 changes (77.6%) are in building zones.
Splits and merges are derived from parcel geometry; the other types come from changes in the set of EGRIDs.
Recent changes
The 10 newest parcel changes
- Resized16 Dec 2025
Niederbüren · 47’207 m² → 1’700 m² · BauG_Landwirtschaftszone
- Resized17 Apr 2026
Benken (SG) · 10’437 m² → 923 m² · BauG Wohnzone WE
- Resized15 Jul 2026
Eschenbach (SG) · 794 m² → 891 m² · Wohn_Gewerbe_Zone_mittlere Dichte
- Resized27 Jan 2026
Abtwil SG · 35’769 m² → 46’386 m² · BauG_Zone für öffentliche Bauten und Anlagen
- Resized2 Jul 2026
St. Gallen · 5’191 m² → 11’313 m² · BauG_Gewerbe-Industriezone GI B
- Resized16 Jun 2026
Au SG · 1’125 m² → 480 m² · BauG_Wohnzone W2b
- Resized24 Feb 2026
Ulisbach · 8’706 m² → 7’706 m² · BauG_Landwirtschaftszone
- Resized15 Jul 2026
Altstätten · 349 m² → 1’644 m² · BauG_Wohn-Gewerbezone WG3
- Resized24 Apr 2026
Sevelen · 746 m² → 589 m² · BauG_Kernzone
- Resized8 Jun 2026
Grabs · 1’924 m² → 3’636 m² · Kernzone Erhalt 15m
Municipalities in the canton of St. Gallen
| Name | Changes | ||||
|---|---|---|---|---|---|
| Benken (SG) | 15 | 0 | 0 | 13 | 2 |
| St. Gallen | 10 | 0 | 0 | 3 | 5 |
| Grabs | 6 | 0 | 0 | 2 | 3 |
| Altstätten | 5 | 0 | 0 | 1 | 2 |
| Ebnat-Kappel | 5 | 0 | 0 | 2 | 3 |
| Thal | 5 | 0 | 0 | 2 | 3 |
| Oberriet (SG) | 4 | 0 | 0 | 2 | 2 |
| Rorschach | 4 | 0 | 0 | 0 | 3 |
| Widnau | 4 | 0 | 0 | 2 | 2 |
| Flums | 3 | 0 | 0 | 1 | 2 |
| Niederbüren | 3 | 0 | 0 | 1 | 1 |
| Niederhelfenschwil | 3 | 0 | 0 | 2 | 1 |
| Sargans | 3 | 0 | 0 | 2 | 1 |
| Buchs (SG) | 2 | 0 | 0 | 1 | 1 |
| Eggersriet | 2 | 0 | 0 | 0 | 2 |
| Kaltbrunn | 2 | 0 | 0 | 0 | 2 |
| Marbach (SG) | 2 | 0 | 0 | 1 | 1 |
| Mosnang | 2 | 0 | 0 | 1 | 1 |
| Oberbüren | 2 | 0 | 0 | 1 | 1 |
| Sevelen | 2 | 0 | 0 | 1 | 1 |
| Uznach | 2 | 0 | 0 | 0 | 1 |
| Waldkirch | 2 | 0 | 0 | 1 | 1 |
| Wittenbach | 2 | 0 | 0 | 1 | 1 |
| Eschenbach (SG) | 1 | 0 | 0 | 0 | 1 |
| Untereggen | 1 | 0 | 0 | 1 | 0 |
| Walenstadt | 1 | 0 | 0 | 1 | 0 |
Other cantons
About the data
snoop compares successive snapshots of the official cadastral survey from swisstopo and derives each split, merge and new parcel from that comparison. A change is counted in the month it first appeared in the published data, so a month keeps its figure once it is out. Only municipalities with at least one change in the period have a page. For legally binding information, check the land register.