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.
14-year-old girl missing from Exeter
Lola Tinkler was last seen on Saturday
Man reattaches flags moments after removal
He scaled his ladder as council contractors used a cherry picker
Rocket builder careers in Cornwall to soar
Government boost to fill demand
'Twas the weather warning before Christmas
More heavy rain hits Devon
Police watchdog investigates after fatal Plymouth crash
Young biker dies
Torbay memorial bench prices top London's
MPs call for a review
