Real Estate Brokerage in
Diepoldsau

13 companies in Real Estate Brokerage based in Diepoldsau — name and year of registration from the commercial register. The list below shows them all.

Companies

All 13 companies in Diepoldsau

Sonnenbau Projekte AG Logo

Sonnenbau Projekte AG

Since 1998 · 1–10 empl.3.8(37)

Sonnenbau Projekte AG provides services in real estate and construction. The company handles property sales and rentals, property management and administration, real estate valuation, and construction-related services.

Real Estate BrokerageProperty salesProperty lettingProperty management
ranQ Trust Score 4.2 out of 5.0, rated Very high, Rank #1
Sonnenbau Dienstleistungs AG Logo

Sonnenbau Dienstleistungs AG

Since 1998 · 11–20 empl.3.8(37)

Sonnenbau Dienstleistungs AG provides services in the real estate and construction sectors. Its activities include property sales, letting, management and administration, as well as property valuation, construction services and real estate investments.

Real Estate BrokerageProperty SalesProperty LettingProperty Management
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #2
CasaInvest Rheintal AG Logo

CasaInvest Rheintal AG

Since 2005 · 11–20 empl.5.0(1)

The core activity of CasaInvest Rheintal AG is the investment, management and administration of real estate, in particular residential and commercial buildings as well as development projects in the extended Rhine Valley region.

Property ManagementReal Estate Portfolio ManagementProperty AcquisitionReal Estate Development
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #3
SI Sieber Immobilien AG Logo

SI Sieber Immobilien AG

Since 2011 · 11–20 empl.3.3(12)

The core activity of Sigmund Sieber AG is the production and distribution of concrete products as well as the trade and transportation of building materials such as gravel and sand. The company operates several locations in the Rhine Valley and offers expert advice and tailored solutions for customers.

Real Estate BrokerageReal estate brokerageProperty managementArchitecture
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #4
AL Immo Diepoldsau AG Logo

AL Immo Diepoldsau AG

Since 1982 · 1–10 empl.4.4(5)

The core activity of AL Immo Diepoldsau AG is the rental and management of real estate, particularly apartments and houses, in Diepoldsau and its surroundings. Additionally, the company also offers LED advertising spaces on its property.

Property ManagementRental apartmentsProperty managementApartment viewing and request
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #5
Fratris Immobilien AG Logo

Fratris Immobilien AG

Since 2020 · 1–10 empl.5.0(4)

The company's core activity is the marketing and redevelopment of real estate, including the valuation, sale and renovation of existing properties, as well as the development and sale of new construction projects.

Real Estate BrokerageReal estate brokerageReal estate valuationProperty renovation
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #6
LA

Laluna-Immo AG

Since 1982 · 1–10 empl.

Real Estate Brokerage
No score yet
DI

Dörig Invest GmbH

Since 1996 · 1–10 empl.

Property Management
No score yet
NG

Novesette GmbH

Since 2005 · 1–10 empl.

Property Management
No score yet
MA

Maraton AG

Since 2012 · 1–10 empl.

Property Management
No score yet
SI

SUM Immobilien GmbH

Since 2023 · 1–10 empl.

Property Management
No score yet
AS

Arik Stähli AG

Since 2025 · 1–10 empl.

Property Management
No score yet

Real Estate Brokerage in Diepoldsau

13Real Estate BrokerageCommercial register (Zefix) · as of October 11, 2026
2005Median year of registrationCommercial register (Zefix) · as of October 11, 2026
1,062in the Canton of St. GallenCommercial register (Zefix) · as of October 11, 2026
17,684in SwitzerlandCommercial register (Zefix) · as of October 11, 2026
Locations

Real Estate Brokerage in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of October 11, 2026