Germann Tiefbau GmbH in Winden is a family-run civil engineering company with roots dating back to 1932. We specialise in excavation works, sewer systems, utility lines, landscaping, road construction, water engineering, retention systems, recycling and demolition. From consultation and planning to precise execution and service, we deliver reliable, cost-efficient and sustainable solutions. With a modern fleet and an experienced team, we support private, commercial and public projects throughout the region with flexibility, quality and on-time delivery.

Conforte Group GmbH is your passionate partner for renovations, conversions and new builds. Our core strengths include construction management as well as plastering, painting and drywall services—delivered with visible quality and reliable scheduling. We don’t offer one-size-fits-all solutions; we create a tailored concept together with you. From first idea to final handover, our young team and strong partner network support your project efficiently, professionally and personally. Locations: Goldach and operations/office in Egnach.

Beton Bohren & Fräsen Sherifi is your trusted partner for professional concrete services in Romanshorn and the surrounding area. The company specializes in core drilling, concrete cutting, milling, demolition and structural adjustments for residential, commercial and industrial projects. With modern equipment and extensive experience, Beton Bohren & Fräsen Sherifi ensures precise, clean and efficient results for every construction project.