A residential tower from the 1960s in Berlin-Neukölln is to be extensively refurbished. The tower shell has never been renewed before. There is spalling on parts of the façade and corrosion. Individual flats have only been modernised sporadically by tenants in recent years. RBA is commissioned to present a comprehensive investigation report of the damage, possible measures and costs. The investigation includes structural parts, building contaminants, building services, energy efficiency investigations and general building & construction. In subsequent phases and years, the entire building is to be thoroughly refurbished in occupied condition.