Canton of Aargau: parcel changes
Canton · 51 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 211 parcel changes in the canton of Aargau: 0 splits, 0 merges, 96 new parcels and 88 changed parcels. 27 parcels were removed. 90% of the changes are in building zones.
Key figures
- Parcel changes
- 211
- 7% of Switzerland
- Parcel splits
- 0
0% of Switzerland
- Parcel merges
- 0
0% of Switzerland
- New parcels
- 96
7.8% of Switzerland
- Changed parcels
- 88
88 resized, 0 re-identified
7.4% of Switzerland
About Aargau
Aargau is number 6 of 26 cantons by parcel changes in this period. Aargau accounts for 7% of the parcel changes in Switzerland.
The municipalities with the most parcel changes are Oberentfelden, Lenzburg and Oftringen.
The busiest month was Aug 2026, with 136 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. | 96 | 45.5% |
| Removed parcelsA parcel that no longer exists. | 27 | 12.8% |
| Re-identifiedSame footprint, new EGRID. | 0 | 0.0% |
| ResizedSame EGRID, changed boundary or area. | 88 | 41.7% |
190 of the 211 changes (90%) 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
- Resized13 Feb 2026
Lenzburg · 57’364 m² → 2’235 m² · Landwirtschaftszone
- Resized5 Dec 2025
216 m² → 301 m² · Einfamilienhauszone
- Resized28 Oct 2025
2’345 m² → 2’582 m² · Wohnzone 2
- Resized10 Dec 2024
Oberkulm · 1’028 m² → 342 m² · Wohnzone 3
- Resized13 Feb 2026
Möriken AG · 898 m² → 432 m² · Wohnzone 2 / 0.45
- Resized25 Sept 2025
Spreitenbach · 709 m² → 379 m² · Wohnzone 2
- Resized23 Jan 2026
Uerkheim · 1’720 m² → 263 m² · Wohnzone am Hang
- Resized1 May 2026
Buchs (AG) · 989 m² → 1’110 m² · Wohnzone b
- Resized16 Apr 2026
Oftringen · 706 m² → 348 m² · Wohn- und Gewerbezone 3
- Resized27 Oct 2025
Sarmenstorf · 1’232 m² → 437 m² · Wohn- und Gewerbezone WG2
Municipalities in the canton of Aargau
| Name | Changes | ||||
|---|---|---|---|---|---|
| Oberentfelden | 8 | 0 | 0 | 6 | 2 |
| Lenzburg | 7 | 0 | 0 | 5 | 2 |
| Oftringen | 7 | 0 | 0 | 4 | 3 |
| Uerkheim | 7 | 0 | 0 | 6 | 1 |
| Freienwil | 6 | 0 | 0 | 4 | 2 |
| Klingnau | 6 | 0 | 0 | 2 | 4 |
| Sarmenstorf | 6 | 0 | 0 | 2 | 4 |
| Eiken | 5 | 0 | 0 | 4 | 1 |
| Hägglingen | 5 | 0 | 0 | 3 | 2 |
| Unterkulm | 5 | 0 | 0 | 3 | 2 |
| Döttingen | 4 | 0 | 0 | 0 | 2 |
| Leutwil | 4 | 0 | 0 | 3 | 1 |
| Möhlin | 4 | 0 | 0 | 3 | 1 |
| Aarburg | 3 | 0 | 0 | 0 | 2 |
| Bergdietikon | 3 | 0 | 0 | 2 | 1 |
| Leimbach (AG) | 3 | 0 | 0 | 2 | 1 |
| Muhen | 3 | 0 | 0 | 2 | 1 |
| Mumpf | 3 | 0 | 0 | 2 | 1 |
| Reinach (AG) | 3 | 0 | 0 | 2 | 1 |
| Sins | 3 | 0 | 0 | 0 | 1 |
| Aarau | 2 | 0 | 0 | 1 | 1 |
| Auw | 2 | 0 | 0 | 1 | 1 |
| Bellikon | 2 | 0 | 0 | 1 | 1 |
| Dottikon | 2 | 0 | 0 | 0 | 1 |
| Ehrendingen | 2 | 0 | 0 | 1 | 1 |
| Fahrwangen | 2 | 0 | 0 | 1 | 1 |
| Killwangen | 2 | 0 | 0 | 0 | 1 |
| Kölliken | 2 | 0 | 0 | 1 | 1 |
| Küttigen | 2 | 0 | 0 | 0 | 1 |
| Lupfig | 2 | 0 | 0 | 1 | 0 |
| Oberkulm | 2 | 0 | 0 | 1 | 1 |
| Oberwil-Lieli | 2 | 0 | 0 | 1 | 1 |
| Remigen | 2 | 0 | 0 | 1 | 1 |
| Riniken | 2 | 0 | 0 | 2 | 0 |
| Rothrist | 2 | 0 | 0 | 0 | 1 |
| Schmiedrued | 2 | 0 | 0 | 1 | 1 |
| Seon | 2 | 0 | 0 | 0 | 1 |
| Strengelbach | 2 | 0 | 0 | 2 | 0 |
| Wallbach | 2 | 0 | 0 | 1 | 1 |
| Wohlenschwil | 2 | 0 | 0 | 0 | 2 |
| Würenlingen | 2 | 0 | 0 | 1 | 1 |
| Birrwil | 1 | 0 | 0 | 0 | 1 |
| Boniswil | 1 | 0 | 0 | 1 | 0 |
| Buchs (AG) | 1 | 0 | 0 | 0 | 1 |
| Endingen | 1 | 0 | 0 | 1 | 0 |
| Full-Reuenthal | 1 | 0 | 0 | 0 | 1 |
| Gränichen | 1 | 0 | 0 | 0 | 1 |
| Magden | 1 | 0 | 0 | 0 | 1 |
| Moosleerau | 1 | 0 | 0 | 0 | 1 |
| Spreitenbach | 1 | 0 | 0 | 1 | 0 |
| Zeiningen | 1 | 0 | 0 | 0 | 1 |
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.