In July, Western Australia experienced the biggest fall in housing approvals in four years, falling by 19.9 per cent, in a sign the state is likely to follow national trends of a property market downturn, according to CommSec's Martin Arnold.

In July, Western Australia experienced the biggest fall in housing approvals in four years, falling by 19.9 per cent, in a sign the state is likely to follow national trends of a property market downturn, according to CommSec's Martin Arnold.