The Estonian energy saving start-up making building management environmentally-friendly January 7, 2021 R8tech, an Estonian start-up making building climate management efficient and environmentally-friendly, closes a 900,000 euro investment round. Tallinn-based start-up R8tech has closed a funding round worth 900,000 euros that will allow the proptech firm, already active in 12 countries across the European Union, including Portugal, Finland, Austria, Netherlands and Poland, to expand into even more markets. Founded in 2017, the R8tech takes advantage of the modern building management systems (BMS) found in large buildings such as shopping malls and business parks, adding artificial intelligence on top of these systems, which have thousands of sensors and data points.