Pourable lightweight wood-based concretes (or wood-cement compounds, WCCs, respectively) were developed and assessed with respect to struc tural properties, targeting their structural combination with timber. Composite slab and wall elements were conceived and evaluated experimentally and analytically in full-scale tests up to rupture and for long-term behaviour. Practical structural design approaches were also derived. Further assessments targeted properties of thermal and fire protection, recyclability, eco-balance and economic competitiveness. Possible use in residential, office and school buildings was proven.