Obermayr constructed an energy-efficient timber social housing building in Wels. The six-story building, which offers 63 rental apartments (gross building area 2,747 m²), was built almost entirely of wood. In addition to a wood facade, wood-aluminium windows and wooden ceilings and floors were used. Total project costs amounted to around 10.2 million Euro. These are similar costs to those of conventionally-built residential buildings and below the construction cost threshold for social housing in Upper Austria - showing how affordable housing and high environmental standards can be combined.