Truro-based Miller Commercial Chartered Surveyors is expanding across the Tamar.
The company has opened a new office in Exeter, to initially concentrate in and around the main conurbations of south and east Devon.
The head of Miller Commercial’s business transfer department, Graham Timmins, said: “As far as a typical buyer is concerned there’s a fairly blurred line between the two counties.
“We have a data base of more than 12,000 potential buyers who are spreading their net wider and looking for a lifestyle change to the south west and we have to act accordingly.”