Whether her department has ever engaged the Council for Scientific and Industrial Resarch (CSIR) to design accommodation and recommend materials that would allow for quality houses with good insulation properties and easy scalability to be erected by municipalities and individuals quickly and affordably to meet the current and future housing demands of those living in informal structures timeously; if not, what are the reasons for the CSIR not being actively engaged in this regard considering that this is a known area of its expertise; if so, what are the relevant details?