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.
Devon teenager charged after Somerset stabbing
Man attacked on street
Two Plymouth towns set for major boost
Residents to call the shots
Could more Dartmoor car parks charge prices?
There are only a small number at present
MP frustrated over Torbay Hospital funding
Conservative and Labour governments both blamed for under-investment
Plans for affordable homes on Exeter County Hall site
Step forward expected
