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

ArchitectureGeneral contracting
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Hartbau Group GmbH Logo

Hartbau Group GmbH

Since 2017

DiagnosticsTherapyTreatment of Concentration and Attention Disorders
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Projekt Bau-Contor AG Logo

Projekt Bau-Contor AG

Since 2020

New constructionClient advisory / client representativeRenovations / conversions
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Hafen Architektur AG Logo

Hafen Architektur AG

Since 2022

ArchitectureSite managementProject development
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PG

Pajetta Group AG

Since 2008

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SI

Swiss Immoo AG

Since 2014

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MG

MAI Generalunternehmung GmbH

Since 2021

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NL

NHN Liegenschaften GmbH

Since 2022

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EG

EAMY GmbH

Since 2023

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AS

AgroCover Swiss GmbH

Since 2024

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SG

Solibau GmbH

Since 2025

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LG

Luviva GmbH

Since 2025

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SG

SDD Generalunternehmung GmbH

Since 2026

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General Contractors in Romanshorn

13General ContractorsCommercial register (Zefix) · as of September 16, 2026
2022Median year of registrationCommercial register (Zefix) · as of September 16, 2026
331in the Canton of ThurgauCommercial register (Zefix) · as of September 16, 2026
9,195in SwitzerlandCommercial register (Zefix) · as of September 16, 2026
Locations

General Contractors in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of September 16, 2026

Largest places

Frauenfeld43Amriswil24Kreuzlingen18Weinfelden13Arbon9Bottighofen7Aadorf7Bischofszell6Mettlen6Ermatingen6
Industry axis

General Contractors in other places

General Contractors across Switzerland
Frauenfeld43Amriswil24Kreuzlingen18Weinfelden13Arbon9Bottighofen7Aadorf7Bischofszell6Mettlen6Ermatingen6Hefenhofen5Sirnach5Islikon5

By canton

Canton of Zurich1,200Canton of Vaud834Canton of Ticino804Canton of Bern705Canton of Geneva623Canton of Aargau559Canton of St. Gallen544Canton of Fribourg469Canton of Lucerne442Canton of Valais437Canton of Zug405Canton of Schwyz341Canton of Thurgau331Canton of Grisons292Canton of Basel-Country258Canton of Solothurn214Canton of Neuchâtel121Canton of Appenzell Outer Rhodes92Canton of Nidwalden76Canton of Schaffhausen68Canton of Glarus50Canton of Obwalden48Canton of Jura37Canton of Appenzell Inner Rhodes21Canton of Uri15
Place axis

Other industries in Romanshorn

All companies in Romanshorn
Property Management59Restaurants39Holding Companies32Real Estate Project Development30Automotive & Vehicle Trade25Management Consulting24Technical Consulting & Engineering23Real Estate Brokerage22IT Consulting & Services20Fiduciary Offices19Coaching & Personal Development18Auto Repair Shops18Painting & Plastering16Building Maintenance15Logistics & Transport Companies14Continuing Education Institutes13Wholesale - General Specialty Trade13Catering13Advertising Agencies12Online Shops12Building Construction11Hair Salons11Mechanical Engineering Industry11Software Development11Trade Fair & Event Organizers10Horticulture & Landscaping9Sports & Recreation Instruction9Shipbuilding9Facility Management & Cleaning9Retail - Food & Luxury Items9Other Service Industries8Architecture Firms8Construction & Project Management8Interior Construction8General Goods Production8Retail - General Specialty Trade8Metal Construction7Plumbing & Building Services7Chemical Industry7NGOs & NPOs6Photography6Repair of Machinery & Electronic Devices6Sealing & Insulation6Electrical Planning & Installation6Wellness & SPA Facilities6Metal Industry6Pharmaceutical Industry6Retail - Textiles & Clothing6