SINGAPORE — When Ms Subashini, a relief security guard, heard that her Housing and Development Board (HDB) block in West Plains@Bukit Batok had a mix of units which included rental flats, she was not happy. 

The 41-year-old owns a three-room Build-to-Order (BTO) flat and having lived in a public rental unit before, she believes that there are "a lot of differences" between rental tenants and homeowners, such as the former not taking care of the common areas and not respecting the neighbours and their privacy.