A new housing model will be introduced to replace the current mature and non-mature HDB estate classification. This will apply to new projects from the second half of next year but Prime Minister Lee Hsien Loong says the new framework needs to achieve three important objectives – ensure affordability, fairness and good social mix. Dr Lee Nai Jia, Head of Real Estate Intelligence, PropertyGuru tells Arnold & Andrea how the new framework would help with achieving the three objectives.