Detailed applications for planning permission, listed building consent and conservation area consent for the £60m regeneration of The Registers have been submitted to Edinburgh council.
The project, to the south-east of St Andrew Square, proposes a mixed-use office, hotel, residential, and retail and leisure scheme.
As part of the plans, the historic 42 St Andrew Square and 28 West Register, currently on the “at risk” register, will be restored and brought back into commercial use.
Chris Stewart Group is the owner and developer of the site.
Chief executive Chris Stewart said: “We are delighted to be able to deliver a comprehensive regeneration of this dark and uninviting part of the city centre.
“Restoring more than 90% of the listed fabric of the site, as well as the neglected surrounding lanes, is a major heritage gain for Edinburgh as these buildings can, once more, be put back into business and commercial use and thus can be universally appreciated and enjoyed by all.”
