General Contractors in
Romanshorn

13 companies in General Contractors based in Romanshorn — name and year of registration from the commercial register. The list below shows them all.

Companies

All 13 companies in Romanshorn

A. Somogyi AG Logo

A. Somogyi AG

Since 1981 · 1–10 empl.

The company A. Somogyi AG is an architectural firm and general contractor specializing in the planning, realization, and execution of construction projects. The core activities include: Architecture: Design and planning of buildings, particularly single-family homes, multi-family homes, industrial and commercial buildings, as well as renovations and refurbishments. General Contracting: Execution of construction projects, including construction work, construction management, and project management. Consulting and Support for Building Owners: The company offers comprehensive consulting and support for building owners, from the initial idea to the completion of the project. Thus, the company provides a comprehensive service in the construction industry, from planning to the realization of construction projects.

Architecture FirmsArchitectureGeneral contracting
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #1
Projekt Bau-Contor AG Logo

Projekt Bau-Contor AG

Since 2020 · 1–10 empl.

The core activity of Projekt Bau-Contor AG is the planning, realization and implementation of construction projects, particularly in the area of new buildings, conversions and repurposing of commercial and residential spaces, as well as the installation of photovoltaic systems. The company also offers services such as tender and contract control, execution control, cost control and defect management.

Building ConstructionNew constructionClient advisory / client representativeRenovations / conversions
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #2
Hafen Architektur AG Logo

Hafen Architektur AG

Since 2022 · 1–10 empl.4.3(6)

The core activity of Hafen Architektur AG is the provision of services in the field of architecture and construction management, including client consulting, planning, project management, construction management, execution planning and architecture. The company offers a wide range of services, from planning and design to monitoring of the construction phase, and specializes in the design of buildings, interior spaces and landscapes.

General ContractorsArchitectureSite managementProject development
ranQ Trust Score 3.8 out of 5.0, rated High, Rank #3
Hartbau Group GmbH Logo

Hartbau Group GmbH

Since 2017 · 1–10 empl.4.0(1)

The core activity of the company 'Mind Solution' is the provision of psychotherapeutic services, particularly in the areas of: Treatment of concentration and attention disorders, Treatment of psychosomatic complaints and chronic pain, Treatment of tension headaches and migraines, Treatment of panic and anxiety disorders, Treatment of functional respiratory diseases, Psychovegetative stress and stress prophylaxis after stroke and heart attack. The company also offers diagnostics and therapy to identify and treat the causes of physical and mental illnesses.

Building ConstructionDiagnosticsTherapyTreatment of Concentration and Attention Disorders
ranQ Trust Score 3.7 out of 5.0, rated Solid, Rank #4
PG

Pajetta Group AG

Since 2008 · 1–10 empl.

General Contractors
No score yet
SI

Swiss Immoo AG

Since 2014 · 1–10 empl.

General Contractors
No score yet
MG

MAI Generalunternehmung GmbH

Since 2021 · 1–10 empl.

General Contractors
No score yet
NL

NHN Liegenschaften GmbH

Since 2022 · 1–10 empl.

General Contractors
No score yet
EG

EAMY GmbH

Since 2023 · 1–10 empl.

General Contractors
No score yet
AS

AgroCover Swiss GmbH

Since 2024 · 1–10 empl.

General Contractors
No score yet
SG

Solibau GmbH

Since 2025 · 1–10 empl.

General Contractors
No score yet
LG

Luviva GmbH

Since 2025 · 1–10 empl.

General Contractors
No score yet

General Contractors in Romanshorn

13General ContractorsCommercial register (Zefix) · as of October 6, 2026
2022Median year of registrationCommercial register (Zefix) · as of October 6, 2026
334in the Canton of ThurgauCommercial register (Zefix) · as of October 6, 2026
9,225in SwitzerlandCommercial register (Zefix) · as of October 6, 2026
Locations

General Contractors in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of October 6, 2026