The project involves four new or expanded settlements at Shawfair, Danderhall, Millerhill and Greendykes, which lie to the south-east of Edinburgh.
Around 4,800 homes have been proposed across 142ha of mainly agricultural land, as well as three primary schools, a range of sports facilities and open space. The communities are designed to be large enough to sustain a wide range of local services and public transport. Shawfair would be a major hub on the proposed Waverley line that would link Edinburgh to Tweedbank in the Borders.
Announcing the project last week, the Shawfair Development partners said that it would be one of the biggest Scottish developments in recent years.
It is expected to create 12,000 jobs.
Midlothian Council leader Adam Montgomery commented: "The development will go some way to address the issue of housing supply while creating jobs."
Edinburgh City Council leader Donald Anderson added: "With an acute shortage of housing in Edinburgh, it is essential that we increase the supply to ensure the economy continues to thrive."