Cantons › St. Gallen › Diepoldsau

New-build projects in Diepoldsau

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

14projected

42authorised

15under construction

325Dwellings planned

In brief

In Diepoldsau (canton of St. Gallen), the Federal Register of Buildings and Dwellings lists 71 buildings that are planned or under construction: 14 projected, 42 authorised and 15 under construction. Together they include 325 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
Vordere Kirchstrasse 1	under construction	Partly residential use	16
Schmitterstrasse 3a	under construction	Purely residential building	11
Schmitterstrasse 5b	under construction	Purely residential building	11
Schmitterstrasse 7a	under construction	Purely residential building	11
Schmitterstrasse 5a	under construction	Purely residential building	10
Schmitterstrasse 7b	under construction	Purely residential building	10
Schmitterstrasse 3	under construction	Purely residential building	6
Schmitterstrasse 5	under construction	Purely residential building	6
Steigstrasse 35	under construction	Residential with secondary use	4
Bogenstrasse 8a	under construction	Purely residential building	3
Rheinstäpflistrasse 8	under construction	Purely residential building	2
Nelkenweg 5	under construction	Purely residential building	1
Sonnenstrasse 2	under construction	Non-residential	–
Vordere Kirchstrasse 3	under construction	Non-residential	–
Schmitterstrasse	under construction	Special-purpose building	–
Rheinstrasse 6	authorised	Purely residential building	14
Rheinstrasse 6a	authorised	Purely residential building	12
Tramstrasse 27	authorised	Purely residential building	11
Tramstrasse 25	authorised	Purely residential building	11
Tramstrasse 23	authorised	Purely residential building	11
Tramstrasse 21	authorised	Purely residential building	11
Heimstrasse 1	authorised	Purely residential building	9
Rheinstrasse 6b	authorised	Purely residential building	8
Rheinstrasse 8	authorised	Purely residential building	8
Kugelgasse 45	authorised	Purely residential building	8
Zwinghofstrasse 1	authorised	Purely residential building	8
Rheinstrasse 8c	authorised	Purely residential building	7
Steigstrasse 1	authorised	Partly residential use	7
Tramstrasse 6	authorised	Purely residential building	7
Rheinstrasse 6c	authorised	Purely residential building	6
Lettenstrasse 8a	authorised	Purely residential building	6
Obergiessenstrasse 19a	authorised	Purely residential building	5
Obergiessenstrasse 19	authorised	Purely residential building	1
Fänerenstrasse 15	authorised	Purely residential building	1
Trattstrasse 1a	authorised	Purely residential building	1
Gartenstrasse 4	authorised	Purely residential building	1
Korberstrasse 8	authorised	Purely residential building	1
Alpstrasse 9	authorised	Purely residential building	1
Alpstrasse 9a	authorised	Purely residential building	1
Alpstrasse 9b	authorised	Purely residential building	1
Alpstrasse 9c	authorised	Residential with secondary use	1
Industriestrasse 2b	authorised	Non-residential	–
Krummenseestrasse 1	authorised	Non-residential	–
Binnenkanalstrasse rechts 18.5	authorised	Non-residential	–
Industriestrasse 10.3	authorised	Non-residential	–
Widenstrasse 26.2	authorised	Non-residential	–
Widenstrasse 26.3	authorised	Non-residential	–
Unterdorfstrasse 13.1	authorised	Non-residential	–
Lettenstrasse 8.1	authorised	Non-residential	–
Lettenstrasse 8.2	authorised	Non-residential	–
Rheinhofstrasse 45	authorised	Non-residential	–
Tramstrasse	authorised	Special-purpose building	–
Tramstrasse	authorised	Special-purpose building	–
Rheinstrasse	authorised	Special-purpose building	–
Untere Böschachstrasse 6.1	authorised	Non-residential	–
Kleewiesstrasse 7.1	authorised	Non-residential	–
Moosstrasse 10	authorised	Non-residential	–
Steigstrasse 7	projected	Purely residential building	17
Moosackerstrasse 19	projected	Purely residential building	15
Moosackerstrasse 21	projected	Purely residential building	14
Mitteldorfstrasse 10	projected	Purely residential building	9
Neugasse 13	projected	Purely residential building	8
Mitteldorfstrasse 10a	projected	Purely residential building	8
Neudorfstrasse 17a	projected	Purely residential building	3
Bitziweg 24	projected	Residential with secondary use	1
Einfangweg 7a	projected	Purely residential building	1
Werkstrasse 43.4	projected	Non-residential	–
Industriestrasse 2.3	projected	Non-residential	–
Kirchweg 7.2	projected	Non-residential	–
Neudorfstrasse 17.2	projected	Non-residential	–
Alpstrasse 10.1	projected	Non-residential	–

Frequently asked questions about Diepoldsau

How many new-build projects are there in Diepoldsau?

Where can I find building permit applications in Diepoldsau?

Building permit applications from Diepoldsau 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 Diepoldsau?

With an alert on vorbau.ch: draw an area around Diepoldsau 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 St. Margrethen 71 Sennwald 70 Sargans 67 Rorschacherberg 66 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.