It was the house in which Conan Doyle resurrected Sherlock Holmes, one of the most recognisable fictional characters in the world, in The Adventure Of The Empty House.
The author designed Undershaw and lived there from 1897-1907, completing 13 Sherlock Holmes stories in that time, including his most famous work, The Hound Of The Baskervilles.
Despite its literary importance, Waverley Council issued decision notices in September 2010 allowing owner Fossway Ltd permission to redevelop the property.
It had been used as a hotel since the 1920s before being left empty in 2005 and falling into disrepair.
Mr Stinchcombe said the Fossway scheme involved using concrete blocks to divide Undershaw into a terrace of three houses.
The proposals also include some demolition and the erection of a three-storey east wing to provide five townhouses and the conversion of the stable block into garages.
Mr Stinchcombe said there were 1360 objections to the Fossway proposals, including local MP Jeremy Hunt, the Culture Secretary; Julian Barnes, who set his Booker Prize-nominated novel Arthur And George in Undershaw; writer Ian Rankin and writer and broadcaster Stephen Fry.
- AAP