WBI AG is a Swiss planning and engineering consultancy delivering infrastructure, rail, structural engineering, municipal engineering, and surveying & GIS services. Since 1955 we manage all phases from studies to commissioning for public, industrial, and private clients. Offices in Regensdorf, Schaffhausen, Langwiesen and new Herisau ensure fast coverage across Northeastern Switzerland. Services include roads and utilities, urban drainage, bridges and structures, rail infrastructure, owner representation, spatial and transport planning, surveying, 3D laser scanning and GIS

- Condominium ownership - Letting - Administrative management - Technical management - Financial management / accounting

Welcome to AZ‑Glasfasertechnik GmbH in Amriswil – your expert partner for powerful fibre optic solutions across Eastern Switzerland. From FTTH to FTTS or FTTB, we plan, install, splice, and connect your fibre lines from the central hub to your premises. Whether for homes or businesses, we build future-ready network infrastructures. With tailored consulting, precise execution, and on-site support, we deliver full-service fibre solutions that keep your data flowing fast and reliably.

Service-Engel.ch GmbH is your local one-stop provider in Arbon for sustainable property care, garden maintenance, furniture installations, clearances, disposal, minor painting and moving services. We serve private and business clients across Thurgau, St Gallen and Appenzell. With 25+ years of hands-on experience, eco-friendly products and flexible scheduling, we keep buildings clean, outdoor areas tidy, moves stress-free and waste properly disposed of. On-site assessment and fair quotes included – reliable results that protect value and comfort.

Reliable event lighting for concerts, theatre, and stage productions – planned, installed, and operated with precision. Services include modern LED lighting, efficient control systems, and flexible configurations. From consultation to setup and live operation, everything is delivered seamlessly and professionally. Ideal for organizers, clubs, and creatives who value quality, consistency, and direct communication. Lighting that creates atmosphere and brings every event to life with the right mood.

Soltermann Digital Measurement provides high-precision surveying services for construction, engineering, and planning. Using drone technology, 3D laser scanning, and digital tools, we support builders, architects, and planners in realizing their projects efficiently. From on-site surveys to CAD data processing and point cloud modeling, we deliver reliable data for confident decisions. Trust in quality and experience in the Schaffhausen region.

Fuerte AG has 17 years of experience in property management and sales, as well as 24 years of experience in construction. Our services include heating and utility cost accounting, management of rental properties and condominiums. We offer new construction, conversion and energy-efficient renovations initial consultation, financing options, land price review, return calculations for sale for investor projects. Building valuations, preparation of valuation reports, architectural options, feasibility studies, status analyses, project design, building applications/permits, implementation planning, cost planning/calculations, construction management, acceptance and commissioning. We look forward to hearing from you.

About Us Liegenschaften Treuhand St.Gallen AG was founded in 1975. Since the beginning of our operations, we have been managing real estate in the greater St. Gallen area. Our clientele includes private individuals, condominium owners’ associations, communities of heirs, and real estate companies. Services • Consulting and support • Administration and valuation records • Documentation • Real estate management • Property management • Planning and maintenance • Sales & valuation Whether you need assistance with a single-family home, condominium, multi-family residence, commercial property, or building plot, we provide comprehensive advice in every case.