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Niedergösgen · Canton of Solothurn

Holding, letting and maintaining property for the long term.

Alliance Holding AG holds participations and real estate in Switzerland. Its subsidiary, Alliance Group GmbH, buys, maintains and lets the group’s properties.

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31.1km

smallest circle around all 9 buildings

Flats owned by the group
25
Properties owned
7
Municipalities
7
Cantons
3

Counted separately

  • 19 hotel rooms (mandate)
  • 4 commercial units, one of them under mandate
  • 24 flats in Oberentfelden from September 2027
  • Owned
  • Managed for third parties
  • Under conversion
  • Surroundings

As at 20.08.2026 · Own survey, cross-checked against the federal building register

What we do

A property strategy built to last.

We do not trade property, we hold it. What we buy, we manage ourselves — and we set ourselves up to keep it for a long time.

AH-01 · Owned

Niedergösgen SO

Haupt­strasse 27

The group's headquarters

EGID 3469804 storeys · Building footprint 183 m²before 1919

3 Flats · 2 Commercial units

The building is assembled from the surfaces surveyed by swisstopo. The sequence is a drawing convention, not a record of how it was built.

View the property: Hauptstrasse 27, Niedergösgen

Photograph 1 of 1 — Hauptstrasse 27, Niedergösgen
Photo 08.08.2026
swisstopo, swissBUILDINGS3D 3.0 · Volumes as surveyed · Terrain shown flat

0.6km as the crow flies

Next stop · Schönenwerd

Own outright

The buildings belong to the group. Decisions on maintenance, letting and renovation are made here, not by a third party.

calculated from the register’s LV95 coordinates

AH-04 · Owned

Schönenwerd SO

Oltner­strasse 35

EGID 3798013 storeys · Building footprint 180 m²before 1919

6 Flats

View the property: Oltnerstrasse 35, Schönenwerd

AH-M · Mandate

Hotel Winkel

Bäckerstrasse 2

EGID 3798814 storeys · Building footprint 277 m²before 1919

19 Hotel rooms · 1 Commercial unit

  • Available1 Commercial unit · 7 of 19 hotel rooms

Neither the building nor the business belongs to the group.

View the property: Hotel Winkel, Schönenwerd

swisstopo, swissBUILDINGS3D 3.0 · Volumes as surveyed · Terrain shown flat

3.7km as the crow flies

Next stop · Oberentfelden

Let and manage

Letting, tenant support and day-to-day management stay in one pair of hands. Every tenant has a named contact.

calculated from the register’s LV95 coordinates

AH-06 · OwnedUnder conversion

Oberentfelden AG

Dorf­strasse 14

EGID 5303753 storeys · Building footprint 307 m²before 1919

24 Flats from September 2027

The model shows the building as it is recorded today. We do not show what it will look like after the conversion.

View the property: Dorfstrasse 14, Oberentfelden

swisstopo, swissBUILDINGS3D 3.0 · Volumes as surveyed · Terrain shown flat

11.7km as the crow flies

Next stop · Olten

Preserve the fabric

Maintenance is planned, not postponed. Renovations happen when they protect the value of the building and the quality of living in it.

calculated from the register’s LV95 coordinates

AH-02 · Owned

Olten SO

Solothurner­strasse 151/153

2 buildings in the register

Solothurnerstrasse 151EGID 3754403 storeys · Building footprint 87 m²1932

Solothurnerstrasse 153EGID 3754413 storeys · Building footprint 174 m²1932

7 Flats

  • Becoming vacant3½ rooms from September 2026

View the property: Solothurnerstrasse 151/153, Olten

Photograph 1 of 3 — Solothurnerstrasse 151/153, Olten
Photo 23.08.2026
swisstopo, swissBUILDINGS3D 3.0 · Volumes as surveyed · Terrain shown flat

13.9km as the crow flies

Next stop · Oensingen

calculated from the register’s LV95 coordinates

AH-07 · Owned

Oensingen SO

Allmend­strasse 9b

EGID 1920421953 storeys · Building footprint 77 m²2021

1 Flat

View the property: Allmendstrasse 9b, Oensingen

Photograph 1 of 13 — Allmendstrasse 9b, Oensingen
Photo
swisstopo, swissBUILDINGS3D 3.0 · Volumes as surveyed · Terrain shown flat

7.9km as the crow flies

Next stop · Roggwil

calculated from the register’s LV95 coordinates

AH-03 · Owned

Roggwil BE

Weibelacker­weg 1

EGID 31374533 storeys · Building footprint 156 m²1919–1945

6 Flats

  • Available1 × 3½ rooms · 1 × 2½ rooms

View the property: Weibelackerweg 1, Roggwil

Photograph 1 of 15 — Weibelackerweg 1, Roggwil
Photo 24.06.2026
swisstopo, swissBUILDINGS3D 3.0 · Volumes as surveyed · Terrain shown flat

15.1km as the crow flies

Next stop · Huttwil

calculated from the register’s LV95 coordinates

AH-05 · Owned

Huttwil BE

Friedhof­weg 4

EGID 14416722 storeys · Building footprint 70 m²before 1919

2 Flats · 1 Commercial unit

  • Available2 × 2½ rooms · 1 Commercial unit

View the property: Friedhofweg 4, Huttwil

Photograph 1 of 22 — Friedhofweg 4, Huttwil
Photo
swisstopo, swissBUILDINGS3D 3.0 · Volumes as surveyed · Terrain shown flat

What is available today

As at 20.08.2026 · counted separately, never added together
UseBuildingStatus
Flats4
3½ roomsWeibelackerweg 1Roggwil AH-03Available
2½ roomsWeibelackerweg 1Roggwil AH-03Available
2½ roomsFriedhofweg 4Huttwil AH-05Available
2½ roomsFriedhofweg 4Huttwil AH-05Available
Shop units2
Commercial unitHotel WinkelSchönenwerd AH-MAvailableMandate
Commercial unitFriedhofweg 4Huttwil AH-05Available
Hotel rooms7
7 of 19 hotel roomsHotel WinkelSchönenwerd AH-MAvailableMandate
Coming soon
3½ roomsSolothurnerstrasse 151/153Olten AH-02Becoming vacantSeptember 2026

Structure

Two companies, clearly separated roles.

The holding company owns, the operating company acts. That separation keeps responsibilities and ownership unambiguous.

  1. Alliance Holding AG

    Holding company

    Holds participations and real estate. A company limited by shares with its registered office in Niedergösgen, entered in the commercial register of the Canton of Solothurn (CHE-251.450.627).

    CHE-251.450.627

  2. Alliance Group GmbH

    Operating company · wholly owned subsidiary

    Purchase, sale, maintenance and letting of property. Wholly owned by Alliance Holding AG (CHE-137.526.366).

    CHE-137.526.366

Your contacts

Two people you can actually reach.

No call centre, no shifting responsibilities. Whoever writes to us speaks to one of the two people who run the business.

  • Ugur Özmen

    Managing Director

  • Michelle Hilfiker

    Head of Property Management

Contact

Tell us what you need.

Looking to rent, a question about one of our buildings, or a property you would like to offer us — write to us and we will answer personally.

Alliance Holding AGHauptstrasse 275013 Niedergösgen

swisstopo, swissBUILDINGS3D 3.0 Volumes as surveyed Terrain shown flat