Cantons › Appenzell Ausserrhoden › Trogen
New-build projects in Trogen
Planned, authorised and started buildings from the official building register, plus building permit applications and forced auctions. As of 11.10.2026.
In brief
In Trogen (canton of Appenzell Ausserrhoden), the Federal Register of Buildings and Dwellings lists 2 buildings that are planned or under construction: 1 projected, 1 authorised and 0 under construction. Together they include 0 planned dwellings. As of 11.10.2026.
Buildings planned and under construction
All projects, under construction first, then by number of dwellings.
| Address | Status | Dwellings |
|---|---|---|
| Unterstadel | authorised | – |
| Blatten 4.1 | projected | – |
Building permit applications in the last 12 months
9 publications in the official gazette. The latest:
- Kommunale Baugesuchspublikation: Schwendi, Trogen18.09.2026 · Schwendi
- Kommunale Baugesuchspublikation: Blatten, Trogen14.08.2026 · Blatten
- Kommunale Baugesuchspublikation: Sand 1, Trogen14.08.2026 · Sand 1
- Kommunale Baugesuchspublikation: Steingasse 4, Trogen14.08.2026 · Steingasse 4
- Kommunale Baugesuchspublikation: Thrüen, Trogen03.07.2026 · Thrüen
- Kommunale Baugesuchspublikation: Bleichi 27, Trogen03.07.2026 · Bleichi 27
- Kommunale Baugesuchspublikation: Bruederwald 8, Trogen03.07.2026 · Bruederwald 8
- Kommunale Baugesuchspublikation: Steingasse 4, Trogen22.05.2026 · Steingasse 4
- Kommunale Baugesuchspublikation: Bühlerstrasse 39, Trogen22.05.2026 · Bühlerstrasse 39
Frequently asked questions about Trogen
How many new-build projects are there in Trogen?
In Trogen (canton of Appenzell Ausserrhoden), the Federal Register of Buildings and Dwellings lists 2 buildings that are planned or under construction: 1 projected, 1 authorised and 0 under construction. Together they include 0 planned dwellings. As of 11.10.2026.
Where can I find building permit applications in Trogen?
Building permit applications from Trogen are published in the cantonal official gazette. Vorbau analyses them: in the last 12 months, 9 building permit applications were published. On the map, you’ll see them right on the plot.
How do I find out about new building projects in Trogen?
With an alert on vorbau.ch: draw an area around Trogen on the map and you’ll get an email as soon as a building there is newly registered, authorised, started or completed. One alert is free.
Other municipalities in the canton of Appenzell Ausserrhoden
Sources: Federal Statistical Office, Federal Register of Buildings and Dwellings (RBD); cantonal official gazettes via amtsblattportal.ch; SOGC. Planned buildings may change or not go ahead.