The average asking price for a home with five or more bedrooms is now £547,500 - up by 23% on a year ago.
Smaller properties have seen much smaller increases in price - just 3% for a four-bed home, and 5% for two bedrooms.
The figures have been produced by a network of independent estate agents.
Raw sewage pours into landmark Devon river
Storm overflows gush into waterway for 40 per cent of year
Work underway to return shingle to East Devon beach
Bulldozer in action for Storm Goretti clean up
Car park fees increase at Devon beauty spot
Northam Burrows season ticket to rise
Tank shell shut downs recycling centre
No one was hurt
Exeter's Royal Clarence hotel to be restored
'Progress is moving fast'
Man sought after alleged Plymouth assualt
Police would like to identify man
