When our kids got married and moved out, we decided to downgrade from our landed home to a HDB flat. We sold our house at $1.7m and bought a $400k renovated HDB resale flat. We invested the balance $1.3m in blue chip stocks, earning $65k pa. Our kids give us $1k per month in total ($12k pa), so our passive income in total is $77k pa. We spend $50k pa and save the rest. We manage to retire comfortably in our 60s.