Go to a bank with your income statements...... see how much the bank can lend you.... for 1st property, you may get up to 80% loan. 50% if it's your second property. (HDB is counted as 1st property if you are HDB owner and do not have the intention to sell.)
Your max Mortgage Servicing Ratio should not exceed 30% of your income. ( your monthly bank repayment should not exceed 30% of your income. )
There is also additional stamp duty to be paid (7%) if it's your 2nd property. If you sell your new property within one year of purchase, there is a 16% seller's stamp duty to be paid.
If you do not know what I am talking about, please do not invest until you learn about all the legal and financial implications.