Today`s plastics are increasingly compounded using renewable fibers, such as Wood-Plastic-Composites (WPC). These bio-based materials have drawn the interest of the massively bulk-plastics consuming building industry. In addition to WPC decking, cladding could not yet demonstrate a significant market growth despite its ecological potential. This raised the question if this particular product is currently well positioned and sufficiently described by attributes which support an engineering façade planning. Our study therefore first identified potential deciders in façade product selection and based on their preferences we subsequently executed an assessment of multiple properties which we derived from current Central European plastics-based cladding products. By the application of multi-criteria decision making (MCDM) we identified 21 attributes from codes and norms for façade planning which directly influence a product selection in façades. It was found that, by means of norm-compliance, WPC is still far behind other cladding products but it shows special properties which can be used for strategic product optimization. Our methodology particularly supports façade designers in material selection processes and in assessing the design risk particularly for new materials, such as bio-based plastics.