The median house price in Perth has risen by 3.5 per cent, or $15,000, in the June quarter as more owners traded up to more expensive homes while the rental market's vacancy rate is now higher than normal, new data shows.

The median house price in Perth has risen by 3.5 per cent, or $15,000, in the June quarter as more owners traded up to more expensive homes while the rental market's vacancy rate is now higher than normal, new data shows.