The deterioration in housing affordability is dampening Western Australia's housing boom cycle with the state's largest builders starting 14,631 dwellings last financial year, a drop of 8.4 per cent on the previous year.

The deterioration in housing affordability is dampening Western Australia's housing boom cycle with the state's largest builders starting 14,631 dwellings last financial year, a drop of 8.4 per cent on the previous year.