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.

Straub GmbH provides professional civil engineering, demolition and disposal services. The company delivers reliable solutions including earthworks, drainage construction and demolition projects.

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.

Straub Road Construction provides professional road construction, civil engineering and demolition services. Reliable solutions for infrastructure, asphalt work and construction projects.

MyWinvest GmbH provides property management, rental, sales and building services in Romanshorn and across Eastern Switzerland. The company manages apartment buildings, investment properties and residential real estate with a personal, efficient and digital approach. Services include administrative and technical management, tenant placement with credit checks, property sales, caretaking, cleaning, winter service and renovation coordination. MyWinvest stands for clear communication, fast response times and long-term value preservation.