Competence in construction
RLC is one of the leading architectural firms in Eastern Switzerland with roots in the St.Gallen Rhine Valley and offices in Rheineck and Winterthur. For 60 years, we have been living architecture and competence in construction. From development and planning to implementation. Whether residential, industrial, office buildings or recreational facilities, whether new construction or renovation, whether state-of-the-art materials and technology or preservation of historic structures: every new project remains a challenge that we gladly accept.


As a total service provider from development, project planning, architecture and execution planning to the realization of construction projects, we rely on our own RLC management system. For a service provision with optimized processes and the accumulated know-how of our team, certified according to the guidelines of ISO 9001.


With over 80 employees, RLC has a creative team with great experience and know-how in all areas of building construction. We use synergies and put together the right team for each task.

Architecture & Project Development
RLC designs projects that combine aesthetics, functionality and economy according to the needs of our clients. Every building, every enclosed space reflects its time and current needs. Conversely, architecture makes a significant contribution to the development of the social framework. At the same time, requirements evolve dynamically.
In the field of architecture, we offer a comprehensive range of services from design to construction, renovation concepts, general and master planning, client representation and energy consulting. We want to create buildings that inspire and delight.


In the field of project development, RLC generates innovative solutions for market- driven investment properties with high utility value. Careful analyses of trends, markets, locations and the needs of all stakeholders lead to targeted concepts and utilization-optimized planning.
Our services range from location and market analysis to utilization concepts, planning and marketing, as well as support during the entire execution process. We also support our clients in the search for tenants for retail, commercial and office space and in the procurement of commercial and industrial building land.

Digitalization in construction
Digital construction is the future and for RLC it is a holistic process – from the strategic approach to spatial planning reviews, preliminary and construction design to implementation and management. RLC recognized the signs of change at an early stage, dealt with digital planning methods and acquired practical know-how. So that our customers can also benefit from the new possibilities.

Key figures

Number of employees
Annual sales
Portrait Alpha Bank Rheintal
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Portrait St.Galler Kantonalbank
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