First housing is a problem for the RBA, they have lowered interest rates hoping people will send and keep the economy moving but people have been using the low interest rates to pay off debt rather than spend.
Lower interest rates has made housing more affordable and pushing prices up, the RBA is aware of this and din't want to lower interest rates because of that.
Will the lower interest rates push property up 10-15%? I think not the softening economy will see to that.
At some point the property cycle will hit the top again, drop back 10% like ut has in the past the recover and move on to new highs just like before.
As for selling your property, why do it if you don't have too. High cost of selling then buying later is probably more that what property may correct