How Much You Need to Earn Each Month to Afford an HDB Flat (Bank Housing Loan) Type of HDB FlatMedian Resale Price (Feb 2022)Min. Gross Monthly Household Income 30% MSR 3-Room$350,000$3,500 4-Room$485,000$4,850 5-Room$608,000$6,080 Executive$777,000$7,770 Mar 26, 2022