about us As the i + R Group, we combine future-oriented, positive thinking and economic action. We work very professionally in each of our service areas and are therefore a reliable partner for all of our customers in the areas of construction, real estate and excavators. The owners Joachim Alge and Reinhard Schertler introduce the family company: Current Here you will find current information and developments about the group of companies. LEARN MORE Our family business We are one of the leading construction and real estate companies in the Lake Constance area. Our origins lie in timber construction, our expertise goes far beyond that. With the trade in Takeuchi excavators, we are at home in large parts of Europe and the specialist in service, rental and sales. LEARN MORE Our history The success story of our company began almost 120 years ago as a carpentry business. LEARN MORE Work show Here you will find a selection of successful projects in the categories of office, residential, hotel, timber construction, industrial and commercial as well as special projects. LEARN MORE Contact Find our locations in Austria, Germany and Switzerland! If you have any questions, please do not hesitate to contact us using the contact details provided. OUR LOCATIONS Contact imprint Sitemap Press service Data protection We use cookies We use cookies to analyze the use of our website, including the search and surfing history, search terms and to be able to offer you information adapted to your usage behavior.Learn more ALLOW ALL COOKIES SETTINGS