Council planning officers waved through an application from Sunvine Limited to change the use of The Royal Standard in Pelton Road at the end of last year.
The application was never put before councillors because only seven people objected to the proposals.
Concerns included the loss of a heritage pub as well as the density of new homes within the development.
The pub, which first opened more than 150 years ago, has been shut since 2020.
Plans to convert it into seven flats were first submitted in August 2023, but were later amended to instead ask for permission for six flats, all but one of which will have one bedroom.
Works are set to begin on site in May, and are due to be completed by the end of January next year.
A report by planning officers said that the building had been marketed as a pub since May 2021, initially with a rent of £50,000 a year.
This figure was later slashed, with potential operators offered a rent of £25,000 a year.
Although the price cut reportedly generated “some interest”, nobody took up the opportunity to take over the pub.
Planning officers said that they believed the building was “no longer viable” as a pub, so said that its loss was acceptable under London planning policies.
They added that converting the pub into flats would help the borough to meet its housing targets.
It was also decided that extensions to the building at ground and first floor level would not be “dominant and overbearing”.
“The proposed development would respect the character and appearance of the area and would result in an acceptable living environment for prospective occupiers,” planning officers said.
“The proposed development would also have no adverse harm on the residential amenity enjoyed by the occupiers of adjoining properties.”
