wonble, good day,
Most major banks here will offer mortgages but foreigners cannot own property/land in the Philippines. There is an allowance of owing 30% but it is quite complicated and I don't know if I would wish to go down that route. If you are married to a Filipino, then it is a different matter. We own a house here in Cebu which we have just finished building.
We are in the opposite situation to you as we are contemplating a move to Australia so would probably rent out our place here and rent first and ultimately buy in Sydney.
We bank with both Bank of the Philippine Islands (
http://www.bpi.com.ph) and Metrobank (
http://www,metrobank.com.ph) both of which are good and offer ebanking etc.
Best!
HA