Sonnenbau Gruppe

What Sonnenbau Gruppe does

Sonnenbau Gruppe is a family-owned Swiss real estate services group headquartered in Diepoldsau, Switzerland, founded in 1980 by Jonny Hutter. It operates across the St. Galler Rheintal and adjacent regions, providing an integrated service stack spanning property sales (Kaufen), rentals (Mieten/Vermieten), professional property management (Bewirtschaftung) for approximately 700 apartments and over 140,000 m² of commercial space, property valuation (Immobilienbewertung), construction and project management through its subsidiary Sonnenbau Projekte AG, and real estate investment participation through CasaInvest Rheintal AG. The group also manages 60 stock ownership communities (Stockwerkeigentümergemeinschaften).

Its customer base consists of individual property owners, buyers, sellers, tenants, property developers, and real estate investors in the regional Swiss market. The technology stack relies on third-party providers: Casasoft AG powers the website listing and property management platform, and Matterport provides 3D virtual tour capability embedded across property listings. Pricing is transaction- and unit-based, including success-based sales commissions, monthly rental fees, recurring property management fees, and fixed-price valuation services (e.g., CHF 500 per hedonic market valuation).

The firm is privately held with no disclosed institutional investors, no funding rounds, and no public listing. Leadership includes CEO Matthias Hutter (on the SVIT Ostschweiz and AGV Rheintal boards since 2015), VR-Präsident Albert Koller, and founder Jonny Hutter. The company holds active memberships in SVIT, SMK, SEK, and HEV, anchoring its position in the Swiss real estate professional ecosystem.

Name

Sonnenbau Gruppe

Legal name

Sonnenbau Gruppe

Website

https://sonnenbau.ch

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

1–10 employees

Short description

Sonnenbau Gruppe is a family-owned Swiss real estate services firm in Diepoldsau, founded in 1980, providing property sales, rentals, management (~700 apartments, 140,000+ m² commercial), valuation, and construction services across the St. Galler Rheintal region.

Ownership category

akta.pro rank

Product category

Real Estate Brokerage and Property Management

NAICS

Offices of Real Estate Agents and Brokers (53121), Residential Property Managers (531311), Real Estate Property Managers (53131), Mortgage and Nonmortgage Loan Brokers (522310), New Single-Family Housing Construction (except For-Sale Builders) (236115)

SIC

Real Estate Agents & Managers (For Others) (6531), General Bldg Contractors - Residential Bldgs (1520), Loan Brokers (6163)

akta.pro primary industry

Residential Investment Property Brokerage (SFR/Small Multifamily) (BPAJAAAE)

Keywords

• Real estate brokerage
• Property management services
• Real estate valuation
• Construction services
• Rental services

Headquarters

HQ city

Diepoldsau

HQ country

Switzerland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Property Sales Commission: Success-based commission on property sales. The fee is only charged when a solvent buyer is found for the property, minimizing risk for clients.
2. Property Rental Services: Rental management services including tenant placement, contract preparation, and property handover management
3. Property Management and Administration: Ongoing property administration for approximately 700 apartments and over 140,000 m² of commercial space, including rent collection, maintenance coordination, and tenant management
4. Property Valuation Services: Professional property valuation services including hedonistic market value assessment and detailed expert valuations for complex properties
5. Construction and Development Services: Project management, real estate development, construction management, and general contracting services through Sonnenbau Projekte AG
6. Real Estate Investment Participation: Direct and indirect real estate investment opportunities through CasaInvest Rheintal AG partnership

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Sonnenbau Gruppe is a comprehensive real estate services firm offering property sales, rentals, management, valuation, and construction services across the St. Galler Rheintal region of Switzerland. The firm manages approximately 700 residential apartments and over 140,000 m² of office and commercial space, and operates a subsidiary Sonnenbau Projekte AG for construction and development services. CasaInvest Rheintal AG provides affiliated real estate investment participation opportunities.

Product overview

Sonnenbau Gruppe operates as a comprehensive real estate services platform offering integrated property sales (Kaufen), rental services (Mieten/Vermieten), and property management (Bewirtschaftung) across the St. Galler Rheintal region. The portfolio is organized around a core platform of real estate marketing and management services, supplemented by specialized divisions: Sonnenbau Projekte AG handles construction and development services, while CasaInvest Rheintal AG provides investment participation opportunities. Additional services include professional property valuation, financing advisory, and educational guides (Ratgeber). The company manages approximately 700 residential units and 140,000 m² of commercial space, serving as both a property broker and full-service real estate operator.

Differentiator

Problem solved

Functional benefit

Products and services

• Immobilienvermarktung (Kaufen) Real estate sales services for residential and commercial properties across the St. Galler Rheintal region, including villa, apartment, single-family, and multi-family property transactions.
• Immobilienvermarktung (Mieten) Rental property listing and tenant placement services for apartments, single-family homes, and commercial spaces in the Rheintal region.
• Bewirtschaftung (Property Management) Professional property management services managing approximately 700 residential apartments and over 140,000 m² of office and commercial space, plus 60 owner community associations (Stockwerkeigentümergemeinschaften).
• Immobilienbewertung (Property Valuation) Real estate valuation services including free online valuations, hedonic market value assessments (CHF 500 package), and detailed property valuations using comparative, cost, income, and DCF methods.
• Baudienstleistungen (Sonnenbau Projekte AG) Construction and project services including project management, real estate development, construction management, and general contracting for residential and commercial developments.
• Immobilienbeteiligung (CasaInvest Rheintal AG) Real estate investment participation services offering direct and indirect property investment opportunities with sustainable returns, managed through affiliated company CasaInvest Rheintal AG.
• Vermietung (Rental Management) Tenant placement and rental management services including property photography, rent determination, marketing materials, viewings, credit checks, lease preparation, and move-in coordination.
• Verkaufen (Property Sales Service) Professional property sales services featuring thorough research, personal consultation, market-accurate pricing, modern marketing tools including 360° virtual tours and drone photography, with success-based commission.

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature2 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• SVIT – Schweizerischer Verband der ImmobilienwirtschaftcoreOthersSwiss Real Estate Industry Association with approximately 2000 member companies committed to high quality standards and ethical principles. Sonnenbau Group maintains membership for industry credibility and networking.
• SVIT – OstschweizcoreOthersRegional SVIT chapter for Eastern Switzerland. Company founder Jonny Hutter served as president from 2005-2010. Current CEO Matthias Hutter has been on the board since 2015.
• SMK – Schweizerische MaklerkammercoreOthersSwiss Brokers' Chamber - network of real estate professionals with high ethical standards, proven professional competence, and commitment to professional reputation.
• SEK – Schweizerische Schätzungsexperten-KammercoreOthersSwiss Chamber of Property Valuation Experts - nationwide expert group within SVIT offering economically optimized property valuation services.
• AGV – Arbeitgeber-Verband RheintalminorOthersEmployers' Association Rheintal - promotes and protects employer interests in the Rheintal region. CEO Matthias Hutter has been on the board since 2015.
• GHI – Gewerbeverein Diepoldsau-SchmitterminorOthersTrade and craft association for Diepoldsau-Schmitter region with goal of promoting and supporting local trade and craftsmanship.
• HEV – Hauseigentümer-VerbandcoreOthersHomeowners' Association with over 250,000 members working to promote and preserve property ownership in Switzerland. Christian Häle from Sonnenbau Group leads the Mittelrheintal section.
• CasaInvest Rheintal AGcoreStrategic or Co-development PartnerInvestment company focused on real estate investment in the Rheintal region with emphasis on portfolio diversification, balancing yield and risk through strategic asset allocation.
• InselgolfminorOthersGolf facility with 10 teeing grounds, driving range up to 250m, putting green, and chipping area. Located in the Rheintal region.

Scale indicators4 records

Recent moves4 records

Expansion highlights5 records

Direct peers

• Wüest Partner AG: Leading Swiss real estate advisory and valuation firm, comparable to Sonnenbau's SEK-affiliated valuation practice and market-research positioning.
• Livit AG: Large Swiss real estate management company with full-service offerings including brokerage, valuation, and administration across Switzerland, comparable in scope and service breadth.
• SPG Intercity: Swiss real estate services company offering brokerage, property management, and consulting across multiple regions, directly comparable to Sonnenbau's integrated service model.
• Privera AG: Major Swiss property management firm handling residential and commercial portfolios, directly comparable to Sonnenbau's Bewirtschaftung business managing 700+ apartments.

Emerging players

• ImmoScout24 Schweiz: Major Swiss real estate platform aggregating listings and providing digital tools to buyers and sellers, comparable as both a distribution channel for Sonnenbau and a competitive threat.
• Homegate AG: Leading Swiss online real estate marketplace and digital brokerage platform, comparable as the primary digital listing channel and emerging competitor to traditional broker commissions.

Regional players

• Bär & Partner Immobilien AG: Regional Swiss real estate broker with comparable full-service offerings across brokerage, valuation, and management in Eastern Switzerland / similar cantonal markets.

Others

• Casasoft AG: Swiss real estate software provider powering Sonnenbau's website and listing platform, comparable as the technology/infrastructure enabler for the brokerage's digital operations.

Broad incumbents

• Helvetia Immobilien AG: Real estate arm of Helvetia Insurance with portfolio management and brokerage, comparable as a broader Swiss incumbent offering integrated real estate services.
• Apleona Schweiz GmbH: International facility and property management incumbent operating in Switzerland with commercial portfolio management capabilities, comparable to Sonnenbau's commercial property management arm.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sonnenbau-gruppe

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sonnenbau Gruppe