SÄBU Gransee Mobile Raumsysteme GmbH was founded in 1991. The then owners of the family business SÄBU Morsbach GmbH, Willy Klein and Stefan Klein, were one of the first companies to invest in the newly created Gransee business park in the district of Oberhavel to expand production capacity. The team of 80 employees produces modern modular buildings made of steel and wood.