However, its annual report and accounts for 2005/06, also reveal that its backlog in determining planning appeals decided by written representations was eliminated at the end of July 2005.
Planning minister Yvette Cooper said: 'The Planning Inspectorate is a key player in delivering the government's programme of planning reform and I am heartened by its response to that challenge. Our programme of reform will create a planning system that responds to ever-changing circumstances.
'The government's response to the Barker review highlighted the urgent need for more housing, and for the inspectorate this means meeting the rising expectations of customers as well as reflecting the government's policy priorities.'
The minister also confirmed, in agreement with Carwyn Jones, the minister for environment, planning and countryside in the Welsh Assembly government, the inspectorate's targets for its main areas of casework in 2006/07.
The annual report can be read here.