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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,808 companies indexed · Last updated: today
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1'211 companies found

Akatherm Haustechnik GmbH Logo

Akatherm Haustechnik GmbH 

Gossau Sg · Since 2020

The core activity of Akatherm Haustechnik GmbH is the development, planning, installation, and maintenance of modern heating solutions for private and potentially commercial customers. The company provides comprehensive services in the heating technology sector, including consulting, planning, installation, and service, with a focus on quality, sustainability, and customer satisfaction.

Plumbing & Building Services
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Ammann & Koller AG Logo

Ammann & Koller AG 

Gossau Sg · Since 1976

The core activity of Ammann & Koller AG is architecture and construction planning, particularly the planning and realization of construction projects in the areas of residential buildings, industrial and commercial buildings, as well as public buildings.

Architecture Firms
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Astra LED AG Logo

Astra LED AG 

Gossau Sg · Since 2007

The core activity of Astra LED AG is the development, production and distribution of intelligent lighting solutions, including luminaires, sensors and building automation, with a focus on energy efficiency, sustainability and regional commitment.

Electrical Industry
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blaser immo gmbh Logo

blaser immo gmbh 

Gossau Sg · Since 2024

The core activity of blaser immo gmbh encompasses real estate management, consulting, sales, marketing and accounting. The company provides comprehensive services for property owners and interested parties in Eastern Switzerland, including the management of rental properties, consulting on the purchase and sale of real estate, marketing of real estate, and accounting and business management for property owners.

Property Management
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Energie Partner GmbH Logo

Energie Partner GmbH 

Gossau Sg · Since 2020

The core activity of Energie Partner GmbH is the provision of services in the field of facade work, particularly in the areas of thermal insulation and dry construction. This includes, among other things: facade insulation, clinker facades, ventilated facades made of natural stone, renovations, interior and exterior painting, and plastering work. The company offers individual solution approaches for general contractors, architects, and builders, and accompanies construction projects from the idea to the finished object.

Specialized Construction Activities
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Erouda Risch Photography Logo

Erouda Risch Photography 

Gossau Sg · Since 2021

The core activity of Erouda Risch Photography is professional photography, particularly portrait, family, business and pregnancy photography.

Photography
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Fliesi GmbH Logo

Fliesi GmbH 

Gossau Sg · Since 2014

The core activity of Fliesi GmbH is the execution of tile laying work, particularly the installation of ceramic, natural stone, mosaic and glass mosaic for bathrooms, kitchens, living rooms and outdoor areas, including planning, material selection and necessary preparatory work.

Flooring & Tiling
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Lenz & Dudli Treuhandgesellschaft AG Gossau Logo

Lenz & Dudli Treuhandgesellschaft AG Gossau 

Gossau Sg · Since 1993

The core activity of Lenz & Dudli is the provision of management and financial services to small and medium-sized enterprises (SMEs) from all industries. This includes in particular: accounting, financial and accounting services, tax consulting, trust services, controlling, auditing and financial auditing. The company offers these services through a team of specialized experts who have the corresponding training and certifications.

Fiduciary Offices
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LIVUM GmbH Logo

LIVUM GmbH 

Gossau Sg · Since 2001

The core activity of LIVUM is the development and marketing of residential properties, particularly single-family homes in quiet locations, with modern architecture and spacious living areas.

Real Estate Project Development
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Marius Kieper GmbH Logo

Marius Kieper GmbH 

Gossau Sg · Since 2009

The core activity of Marius Kieper GmbH is the provision of services in the field of sheet metal work, roofing and façade construction, including planning, execution and maintenance of roofs, façades and sheet metal work in Eastern Switzerland.

Sheet Metal Work
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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?
The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.
How do keywords work?
Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.
What belongs in the postal code field?
A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.
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How is organisation size determined?
Size reflects the number of employees and is calculated from publicly available information by a model developed in-house. It is a best-possible estimate, not an official figure.
What does the Verified label mean?
Verified means the entry is tied to a UID (Swiss business identification number) and therefore links back to the official Swiss business register. The label speaks to the company's identity — it is not a rating of its performance.

Source: Federal Statistical Office, UID register

How do I sort the results?
Use the dropdown above the list: Relevance, Name (A–Z), Best rating, Most reviews or Longest established. You can also switch between list and map view and set how many results appear per page.