Buying a home will probably be the biggest investment you will make. It’s likely to be your single largest asset, and involves a long-term financial commitment. Before you take such a big step, it’s VERY important that you do your homework, and your sums.
(Read "CPF Property Rules: 4 things you may not know").

Many of us will use CPF savings to pay for our homes. Yet at the same time, CPF savings are meant to be our old age savings.

Remember these two key points before you commit to your dream home!

The more money you spend on housing, the less you will have for retirement. Generally, your total monthly debt payments (including your home loan) should not be more than 35% of gross monthly income (http://www.moneysense.gov.sg/ about/Consumer_Portal _MoneySENSE.html). You should be aware that there are withdrawal limits on the use of CPF for housing. Once you reach the limits, you may have to pay the housing instalments fully in cash.