Cantons › St. Gallen › Altstätten

New-build projects in Altstätten

Planned, authorised and started buildings from the official building register, plus building permit applications and forced auctions. As of 11.10.2026.

7projected

29authorised

29under construction

228Dwellings planned

In brief

In Altstätten (canton of St. Gallen), the Federal Register of Buildings and Dwellings lists 65 buildings that are planned or under construction: 7 projected, 29 authorised and 29 under construction. Together they include 228 planned dwellings. As of 11.10.2026.

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Buildings planned and under construction

All projects, under construction first, then by number of dwellings.

Address	Status	Type	Dwellings
Landstrasse 13	under construction	Purely residential building	15
Landstrasse 9	under construction	Purely residential building	15
Landstrasse 5	under construction	Purely residential building	15
Landstrasse 17	under construction	Purely residential building	14
Landstrasse 3	under construction	Purely residential building	14
Landstrasse 11	under construction	Purely residential building	12
Landstrasse 19	under construction	Purely residential building	11
Landstrasse 7	under construction	Purely residential building	10
Landstrasse 15	under construction	Purely residential building	9
Landstrasse 1	under construction	Residential with secondary use	9
Oberrieterstrasse 4a	under construction	Purely residential building	8
Im Roosen 5	under construction	Purely residential building	8
Bahnhofstrasse 52	under construction	Purely residential building	7
Oberrieterstrasse 4	under construction	Purely residential building	6
Im Hebler 13	under construction	Purely residential building	5
Eichbergerstrasse 1	under construction	Purely residential building	4
Brendenbachweg 21	under construction	Purely residential building	3
Breite 47	under construction	Purely residential building	3
Im Bächis 34	under construction	Purely residential building	1
Im Bächis 34a	under construction	Purely residential building	1
Gern Gätziberg 4	under construction	Purely residential building	1
Hintere Blattenstrasse 12	under construction	Purely residential building	1
Hintere Blattenstrasse 13	under construction	Purely residential building	1
Hintere Blattenstrasse 22	under construction	Purely residential building	1
Hintere Blattenstrasse 9	under construction	Purely residential building	1
Alte Landstrasse 33	under construction	Purely residential building	1
Kobelwies 12.3	under construction	Non-residential	–
Industriestrasse 6	under construction	Non-residential	–
Landstrasse 1.1	under construction	Special-purpose building	–
Mühlackerweg 2	authorised	Purely residential building	13
Erlenweg 3	authorised	Purely residential building	3
Erlenweg 5	authorised	Purely residential building	3
Kirlenstrasse 13	authorised	Purely residential building	1
Kirlenstrasse 13a	authorised	Purely residential building	1
Kirlenstrasse 15	authorised	Purely residential building	1
Kirlenstrasse 15a	authorised	Purely residential building	1
Nordstrasse 21a	authorised	Purely residential building	1
Nordstrasse 21b	authorised	Purely residential building	1
Hintere Blattenstrasse 11	authorised	Purely residential building	1
Rorschacherstrasse 86	authorised	Purely residential building	1
Rorschacherstrasse 86a	authorised	Purely residential building	1
Rorschacherstrasse 86b	authorised	Purely residential building	1
Rorschacherstrasse 88	authorised	Purely residential building	1
Rorschacherstrasse 88a	authorised	Purely residential building	1
Rorschacherstrasse 88b	authorised	Purely residential building	1
Im Roosen 28a	authorised	Purely residential building	1
Im Ruppendörfli 28a	authorised	Purely residential building	1
Harztannenweg 1	authorised	Purely residential building	1
Harztannenweg 2	authorised	Purely residential building	1
Harztannenweg 3	authorised	Purely residential building	1
Harztannenweg 4	authorised	Purely residential building	1
Harztannenweg 5	authorised	Purely residential building	1
Harztannenweg 6	authorised	Purely residential building	1
Lehnstrasse 6	authorised	Purely residential building	–
Alte Landstrasse 6a.5	authorised	Non-residential	–
Kirlenstrasse 13.1	authorised	Special-purpose building	–
Rietaachstrasse 35.2	authorised	Non-residential	–
Heidenerstrasse 17	authorised	Non-residential	–
Fleubenstrasse 1	projected	Purely residential building	5
Wolfensbergstrasse 4	projected	Purely residential building	3
Mittlerer Büchel 8	projected	Purely residential building	1
Alte Ruppenstrasse 17	projected	Purely residential building	1
Alte Ruppenstrasse 19	projected	Purely residential building	1
Eichbergerstrasse 62	projected	Partly residential use	1
Bächler 10.2	projected	Non-residential	–

Frequently asked questions about Altstätten

How many new-build projects are there in Altstätten?

Where can I find building permit applications in Altstätten?

Building permit applications from Altstätten are published in the official gazette of the canton of St. Gallen or by the municipality. Vorbau doesn’t analyse this canton’s building permit applications yet, but you can see the planned buildings from the building register on the map.

How do I find out about new building projects in Altstätten?

With an alert on vorbau.ch: draw an area around Altstätten 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 St. Gallen

St. Gallen 188 Rapperswil-Jona 96 Oberriet (SG) 90 Kirchberg (SG) 86 Flawil 81 Wil (SG) 80 Uzwil 77 Buchs (SG) 72 Diepoldsau 71 St. Margrethen 71 Sennwald 70 Sargans 67 All municipalities ›

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.