From 1 January 2003, HDB no longer provided market rate loans. This was to allow HDB to focus on its core responsibility of providing quality and affordable public housing.
Flats buyers who are not eligible for HDB's concessionary rate loans can obtain market rate loans from banks that are licensed to provide housing loans. They can choose from the competitive housing loan packages offered by banks.
Those with existing HDB market rate mortgages can continue with their existing mortgages. However, if they wish to refinance their loans with the banks, they may do so after getting HDB's consent.
Check your eligibility for a concessionary interest rate housing loan
Read about housing loans from banks for HDB flats